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Author | Yusupov, M.; Yan, D.; Cordeiro, R.M.; Bogaerts, A. | ||||
Title | Atomic scale simulation of H2O2permeation through aquaporin: toward the understanding of plasma cancer treatment | Type | A1 Journal article | ||
Year | 2018 | Publication | Journal of physics: D: applied physics | Abbreviated Journal | J Phys D Appl Phys |
Volume | 51 | Issue | 12 | Pages | 125401 |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | Experiments have demonstrated the potential selective anticancer capacity of cold atmospheric plasmas (CAPs), but the underlying mechanisms remain unclear. Using computer simulations, we try to shed light on the mechanism of selectivity, based on aquaporins (AQPs), i.e. transmembrane protein channels transferring external H 2 O 2 and other reactive oxygen species, created e.g. by CAPs, to the cell interior. Specifically, we perform molecular dynamics simulations for the permeation of H 2 O 2 through AQP1 (one of the members of the AQP family) and the palmitoyl-oleoyl-phosphatidylcholine (POPC) phospholipid bilayer (PLB). The free energy barrier of H 2 O 2 across AQP1 is lower than for the POPC PLB, while the permeability coefficient, calculated using the free energy and diffusion rate profiles, is two orders of magnitude higher. This indicates that the delivery of H 2 O 2 into the cell interior should be through AQP. Our study gives a better insight into the role of AQPs in the selectivity of CAPs for treating cancer cells. | ||||
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Language | Wos | 000426378100001 | Publication Date | 2018-02-28 | |
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ISSN | 0022-3727 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 2.588 | Times cited | 7 | Open Access | OpenAccess |
Notes | MY gratefully acknowledges financial support from the Research Foundation—Flanders (FWO) via Grant No. 1200216N and a travel grant to George Washington University (GWU). The computational work was carried out using the Turing HPC infrastructure at the CalcUA core facility of the Universiteit Antwerpen (UA), a division of the Flemish Super- computer Center VSC, funded by the Hercules Foundation, the Flemish Government (department EWI) and the UA. Work at GWU was supported by the National Science Foundation, grant 1465061. RMC thanks FAPESP and CNPq for finan- cial support (Grant Nos. 2012/50680-5 and 459270/2014-1, respectively). | Approved | Most recent IF: 2.588 | ||
Call Number | PLASMANT @ plasmant @c:irua:149382 | Serial | 4811 | ||
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Author | Bal, K.M.; Huygh, S.; Bogaerts, A.; Neyts, E.C. | ||||
Title | Effect of plasma-induced surface charging on catalytic processes: application to CO2activation | Type | A1 Journal article | ||
Year | 2018 | Publication | Plasma sources science and technology | Abbreviated Journal | Plasma Sources Sci T |
Volume | 27 | Issue | 2 | Pages | 024001 |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | Understanding the nature and effect of the multitude of plasma–surface interactions in plasma catalysis is a crucial requirement for further process development and improvement. A particularly intriguing and rather unique property of a plasma-catalytic setup is the ability of the plasma to modify the electronic structure, and hence chemical properties, of the catalyst through charging, i.e. the absorption of excess electrons. In this work, we develop a quantum chemical model based on density functional theory to study excess negative surface charges in a heterogeneous catalyst exposed to a plasma. This method is specifically applied to investigate plasma-catalytic CO2 activation on supported M/Al2O3 (M=Ti, Ni, Cu) single atom catalysts. We find that (1) the presence of a negative surface charge dramatically improves the reductive power of the catalyst, strongly promoting the splitting of CO2 to CO and oxygen, and (2) the relative activity of the investigated transition metals is also changed upon charging, suggesting that controlled surface charging is a powerful additional parameter to tune catalyst activity and selectivity. These results strongly point to plasma-induced surface charging of the catalyst as an important factor contributing to the plasma-catalyst synergistic effects frequently reported for plasma catalysis. | ||||
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Language | Wos | 000424520100001 | Publication Date | 2018-02-07 | |
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ISSN | 1361-6595 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 3.302 | Times cited | 19 | Open Access | OpenAccess |
Notes | KMB is funded as PhD fellow (aspirant) of the FWO-Flanders (Research Foundation—Flanders), Grant 11V8915N. The computational resources and services used in this work were provided by the VSC (Flemish Supercomputer Center), funded by the FWO and the Flemish Government— department EWI. | Approved | Most recent IF: 3.302 | ||
Call Number | PLASMANT @ plasmant @c:irua:149285 | Serial | 4813 | ||
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Author | Bogaerts, A.; Neyts, E.C. | ||||
Title | Plasma Technology: An Emerging Technology for Energy Storage | Type | A1 Journal article | ||
Year | 2018 | Publication | ACS energy letters | Abbreviated Journal | Acs Energy Lett |
Volume | 3 | Issue | 4 | Pages | 1013-1027 |
Keywords | A1 Journal article; Engineering sciences. Technology; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | Plasma technology is gaining increasing interest for gas conversion applications, such as CO2 conversion into value-added chemicals or renewable fuels, and N2 fixation from the air, to be used for the production of small building blocks for, e.g., mineral fertilizers. Plasma is generated by electric power and can easily be switched on/off, making it, in principle, suitable for using intermittent renewable electricity. In this Perspective article, we explain why plasma might be promising for this application. We briefly present the most common types of plasma reactors with their characteristic features, illustrating why some plasma types exhibit better energy efficiency than others. We also highlight current research in the fields of CO2 conversion (including the combined conversion of CO2 with CH4, H2O, or H2) as well as N2 fixation (for NH3 or NOx synthesis). Finally, we discuss the major limitations and steps to be taken for further improvement. | ||||
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Language | Wos | 000430369600035 | Publication Date | 2018-04-13 | |
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ISSN | 2380-8195 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | Times cited | 56 | Open Access | OpenAccess | |
Notes | Universiteit Antwerpen, TOP research project 32249 ; Fonds Wetenschappelijk Onderzoek, G.0217.14N G.0254.14N G.0383.16N ; | Approved | Most recent IF: NA | ||
Call Number | PLASMANT @ plasmant @c:irua:150358 | Serial | 4919 | ||
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Author | Verlackt, C.C.W.; Van Boxem, W.; Bogaerts, A. | ||||
Title | Transport and accumulation of plasma generated species in aqueous solution | Type | A1 Journal article | ||
Year | 2018 | Publication | Physical chemistry, chemical physics | Abbreviated Journal | Phys Chem Chem Phys |
Volume | 20 | Issue | 10 | Pages | 6845-6859 |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | The interaction between cold atmospheric pressure plasma and liquids is receiving increasing attention for various applications. In particular, the use of plasma-treated liquids (PTL) for biomedical applications is of growing importance, in particular for sterilization and cancer treatment. However, insight into the underlying mechanisms of plasma–liquid interactions is still scarce. Here, we present a 2D fluid dynamics model for the interaction between a plasma jet and liquid water. Our results indicate that the formed reactive species originate from either the gas phase (with further solvation) or are formed at the liquid interface. A clear increase in the aqueous density of H2O2, HNO2/NO2- and NO3- is observed as a function of time, while the densities of O3, HO2/O2- and ONOOH/ONOO- are found to quickly reach a maximum due to chemical reactions in solution. The trends observed in our model correlate well with experimental observations from the literature. |
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Language | Wos | 000429286100009 | Publication Date | 2018-02-06 | |
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ISSN | 1463-9076 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 4.123 | Times cited | 35 | Open Access | OpenAccess |
Notes | The authors thank Petr Luke`s (Institute of Plasma Physics AS CR, Czech Republic) and Yury Gorbanev (UAntwerp, group PLASMANT) for the fruitful discussions regarding the chemistry in the model and the plasma–liquid interactions. | Approved | Most recent IF: 4.123 | ||
Call Number | PLASMANT @ plasmant @c:irua:149557 | Serial | 4908 | ||
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Author | Kumar, N.; Shaw, P.; Razzokov, J.; Yusupov, M.; Attri, P.; Uhm, H.S.; Choi, E.H.; Bogaerts, A. | ||||
Title | Enhancement of cellular glucose uptake by reactive species: a promising approach for diabetes therapy | Type | A1 Journal article | ||
Year | 2018 | Publication | RSC advances | Abbreviated Journal | Rsc Adv |
Volume | 8 | Issue | 18 | Pages | 9887-9894 |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | It is generally known that antidiabetic activity is associated with an increased level of glucose uptake in adipocytes and skeletal muscle cells. However, the role of exogenous reactive oxygen and nitrogen species (RONS) in muscle development and more importantly in glucose uptake is largely unknown. We investigate the effect of RONS generated by cold atmospheric plasma (CAP) in glucose uptake. We show that the glucose uptake is significantly enhanced in differentiated L6 skeletal muscle cells after CAP treatment. We also observe a significant increase of the intracellular Ca++ and ROS level, without causing toxicity. One of the possible reasons for an elevated level of glucose uptake as well as intracellular ROS and Ca++ ions is probably the increased oxidative stress leading to glucose transport. | ||||
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Language | Wos | 000430451800036 | Publication Date | 2018-03-08 | |
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ISSN | 2046-2069 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 3.108 | Times cited | 1 | Open Access | OpenAccess |
Notes | We gratefully acknowledge nancial support from the Research Foundation – Flanders (FWO), grant numbers 12J5617N, 1200216N and from the European Marie Skłodowska-Curie Individual Fellowship “Anticancer-PAM” within Horizon2020 (grant number 743546). We are also thankful to the Plasma Bioscience Research Center at Kwangwoon University for providing the core facilities for the experimental work as well as nancial support by the Leading Foreign Research Institute Recruitment program (Grant # NRF-2016K1A4A3914113) through the Basic Science Research Program of the National Research Founda | Approved | Most recent IF: 3.108 | ||
Call Number | PLASMANT @ plasmant @c:irua:149564 | Serial | 4909 | ||
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Author | Razzokov, J.; Yusupov, M.; Vanuytsel, S.; Neyts, E.C.; Bogaerts, A. | ||||
Title | Phosphatidylserine flip-flop induced by oxidation of the plasma membrane: a better insight by atomic scale modeling | Type | A1 Journal article | ||
Year | 2017 | Publication | Plasma processes and polymers | Abbreviated Journal | Plasma Process Polym |
Volume | 14 | Issue | 10 | Pages | 1700013 |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | We perform molecular dynamics simulations to study the flip-flop motion of phosphatidylserine (PS) across the plasma membrane upon increasing oxidation degree of the membrane. Our computational results show that an increase of the oxidation degree in the lipids leads to a decrease of the free energy barrier for translocation of PS through the membrane. In other words, oxidation of the lipids facilitates PS flip-flop motion across the membrane, because in native phospholipid bilayers this is only a “rare event” due to the high energy barriers for the translocation of PS. The present study provides an atomic-scale insight into the mechanisms of the PS flip-flop upon oxidation of lipids, as produced for example by cold atmospheric plasma, in living cells. | ||||
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Language | Wos | 000413045800010 | Publication Date | 2017-04-05 | |
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ISSN | 1612-8850 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 2.846 | Times cited | 9 | Open Access | Not_Open_Access |
Notes | Fonds Wetenschappelijk Onderzoek, 1200216N ; | Approved | Most recent IF: 2.846 | ||
Call Number | PLASMANT @ plasmant @c:irua:149567 | Serial | 4910 | ||
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Author | Berthelot, A.; Bogaerts, A. | ||||
Title | Pinpointing energy losses in CO 2 plasmas – Effect on CO 2 conversion | Type | A1 Journal article | ||
Year | 2018 | Publication | Journal of CO2 utilization | Abbreviated Journal | J Co2 Util |
Volume | 24 | Issue | Pages | 479-499 | |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | Plasma technology is gaining increasing interest for CO2 conversion, but to maximize the energy efficiency, it is important to track the different energy transfers taking place in the plasma. In this paper, we study these mechanisms by a 0D chemical kinetics model, including the vibrational kinetics, for different conditions of reduced electric field, gas temperature and ionization degree, at a pressure of 100 mbar. Our model predicts a maximum conversion and energy efficiency of 32% and 47%, respectively, at conditions that are particularly beneficial for energy efficient CO2 conversion, i.e. a low reduced electric field (10 Td) and a low gas temperature (300 K). We study the effect of the efficiency by which the vibrational energy is used to dissociate CO2, as well as of the activation energy of the reaction CO2+O→CO+O2, to elucidate the theoretical limitations to the energy efficiency. Our model reveals that these parameters are mainly responsible for the limitations in the energy efficiency. By varying these parameters, we can reach a maximum conversion and energy efficiency of 86%. Finally, we derive an empirical formula to estimate the maximum possible energy efficiency that can be reached under the assumptions of the model. |
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Language | Wos | 000428234500054 | Publication Date | 2018-03-15 | |
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ISSN | 2212-9820 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 4.292 | Times cited | 6 | Open Access | Not_Open_Access: Available from 16.03.2020 |
Notes | We acknowledge financial support from the European Union's Seventh Framework Program for research, technological development and demonstration under grant agreement no. 606889. The calculations were carried out using the Turing HPC infrastructure at the CalcUA core facility of the Universiteit Antwerpen (UA), a division of the Flemish Supercomputer Center VSC, funded by the Hercules Foundation, the Flemish Government (department EWI) and the UA. We would also like to thank Prof. Richard van de Sanden (DIFFER) for the interesting talks. | Approved | Most recent IF: 4.292 | ||
Call Number | PLASMANT @ plasmant @c:irua:149645 | Serial | 4912 | ||
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Author | Wang, W.; Snoeckx, R.; Zhang, X.; Cha, M.S.; Bogaerts, A. | ||||
Title | Modeling Plasma-based CO2and CH4Conversion in Mixtures with N2, O2, and H2O: The Bigger Plasma Chemistry Picture | Type | A1 Journal article | ||
Year | 2018 | Publication | The journal of physical chemistry: C : nanomaterials and interfaces | Abbreviated Journal | J Phys Chem C |
Volume | 122 | Issue | 16 | Pages | 8704-8723 |
Keywords | A1 Journal article; Engineering sciences. Technology; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | Because of the unique properties of plasma technology, its use in gas conversion applications is gaining significant interest around the globe. Plasma-based CO2 and CH4 conversion has become a major research area. Many investigations have already been performed regarding the single-component gases, that is, CO2 splitting and CH4 reforming, as well as for two-component mixtures, that is, dry reforming of methane (CO2/CH4), partial oxidation of methane (CH4/O2), artificial photosynthesis (CO2/H2O), CO2 hydrogenation (CO2/H2), and even first steps toward the influence of N2 impurities have been taken, that is, CO2/N2 and CH4/N2. In this Feature Article we briefly discuss the advances made in literature for these different steps from a plasma chemistry modeling point of view. Subsequently, we present a comprehensive plasma chemistry set, combining the knowledge gathered in this field so far and supported with extensive experimental data. This set can be used for chemical kinetics plasma modeling for all possible combinations of CO2, CH4, N2, O2, and H2O to investigate the bigger picture of the underlying plasmachemical pathways for these mixtures in a dielectric barrier discharge plasma. This is extremely valuable for the optimization of existing plasma-based CO2 conversion and CH4 reforming processes as well as for investigating the influence of N2, O2, and H2O on these processes and even to support plasma-based multireforming processes. |
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Language | Wos | 000431151200002 | Publication Date | 2018-04-26 | |
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ISSN | 1932-7447 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 4.536 | Times cited | 28 | Open Access | OpenAccess |
Notes | Federaal Wetenschapsbeleid, IAP/7 ; King Abdullah University of Science and Technology; H2020 Marie Sklodowska-Curie Actions, 657304 ; Fonds Wetenschappelijk Onderzoek, G.0217.14N G.0383.16N G.0254.14N ; | Approved | Most recent IF: 4.536 | ||
Call Number | PLASMANT @ plasmant @c:irua:150969 | Serial | 4922 | ||
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Author | Zhang, Q.-Z.; Bogaerts, A. | ||||
Title | Propagation of a plasma streamer in catalyst pores | Type | A1 Journal article | ||
Year | 2018 | Publication | Plasma sources science and technology | Abbreviated Journal | Plasma Sources Sci T |
Volume | 27 | Issue | 3 | Pages | 035009 |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | Although plasma catalysis is gaining increasing interest for various environmental applications, the underlying mechanisms are still far from understood. For instance, it is not yet clear whether and how plasma streamers can propagate in catalyst pores, and what is the minimum pore size to make this happen. As this is crucial information to ensure good plasma-catalyst interaction, we study here the mechanism of plasma streamer propagation in a catalyst pore, by means of a twodimensional particle-in-cell/Monte Carlo collision model, for various pore diameters in the nm range to μm-range. The so-called Debye length is an important criterion for plasma penetration into catalyst pores, i.e. a plasma streamer can penetrate into pores when their diameter is larger than the Debye length. The Debye length is typically in the order of a few 100 nm up to 1 μm at the conditions under study, depending on electron density and temperature in the plasma streamer. For pores in the range of ∼50 nm, plasma can thus only penetrate to some extent and at very short times, i.e. at the beginning of a micro-discharge, before the actual plasma streamer reaches the catalyst surface and a sheath is formed in front of the surface. We can make plasma streamers penetrate into smaller pores (down to ca. 500 nm at the conditions under study) by increasing the applied voltage, which yields a higher plasma density, and thus reduces the Debye length. Our simulations also reveal that the plasma streamers induce surface charging of the catalyst pore sidewalls, causing discharge enhancement inside the pore, depending on pore diameter and depth. |
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Language | Wos | 000427976800001 | Publication Date | 2018-03-20 | |
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ISSN | 1361-6595 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 3.302 | Times cited | 16 | Open Access | OpenAccess |
Notes | We acknowledge financial support from the European Marie Skłodowska-Curie Individual Fellowship within H2020 (Grant Agreement 702604) and from the Fund for Scientific Research Flanders (FWO) (Excellence of Science Program; EOS ID 30505023). This work was carried out in part using the Turing HPC infrastructure at the CalcUA core facility of the Universiteit Antwerpen, a division of the Flemish Supercomputer Center VSC, funded by the Hercules Foundation, the Flemish Government (department EWI) and the University of Antwerp. | Approved | Most recent IF: 3.302 | ||
Call Number | PLASMANT @ plasmant @c:irua:150877 | Serial | 4954 | ||
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Author | Belov, I.; Vermeiren, V.; Paulussen, S.; Bogaerts, A. | ||||
Title | Carbon dioxide dissociation in a microwave plasma reactor operating in a wide pressure range and different gas inlet configurations | Type | A1 Journal article | ||
Year | 2018 | Publication | Journal of CO2 utilization | Abbreviated Journal | J Co2 Util |
Volume | 24 | Issue | Pages | 386-397 | |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | Microwave (MW) plasmas represent a promising solution for efficient CO2 dissociation. MW discharges are also very versatile and can be sustained at various pressure and gas flow regimes. To identify the most favorable conditions for the further scale-up of the CO2 decomposition reaction, a MW plasma reactor operating in pure CO2 in a wide pressure range (200 mbar–1 bar) is studied. Three different gas flow configurations are explored: a direct, reverse and a vortex regime. The CO2 conversion and energy efficiency drop almost linearly with increasing pressure, regardless of the gas flow regime. The results obtained in the direct flow configuration underline the importance of post-discharge cooling, as the exhaust of the MW plasma reactor in this regime expanded into the vacuum chamber without additional quenching. As a result, this system yields exhaust temperatures of up to 1000 K, which explains the lowest conversion (∼3.5% at 200 mbar and 2% at 1 bar). A post-discharge cooling step is introduced for the reverse gas inlet regime and allows the highest conversion to be achieved (∼38% at 200 mbar and 6.2% at 1 bar, with energy efficiencies of 23% and 3.7%). Finally, a tangential gas inlet is utilized in the vortex configuration to generate a swirl flow pattern. This results in the generation of a stable discharge in a broader range of CO2 flows (15–30 SLM) and the highest energy efficiencies obtained in this study (∼25% at 300 mbar and ∼13% at 1 bar, at conversions of 21% and 12%). The experimental results are complemented with computational fluid dynamics simulations and with the analysis of the latest literature to identify the further research directions. | ||||
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Language | Wos | 000428234500045 | Publication Date | 2018-03-15 | |
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ISSN | 2212-9820 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 4.292 | Times cited | 8 | Open Access | Not_Open_Access: Available from 16.03.2020 |
Notes | The research leading to these results has received funding from the European Union Seventh Framework Programme (FP7-PEOPLE-2013- ITN) under Grant Agreement№606889 (R | Approved | Most recent IF: 4.292 | ||
Call Number | PLASMANT @ plasmant @c:irua:150874 | Serial | 4955 | ||
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Author | Uytdenhouwen, Y.; Van Alphen, S.; Michielsen, I.; Meynen, V.; Cool, P.; Bogaerts, A. | ||||
Title | A packed-bed DBD micro plasma reactor for CO 2 dissociation: Does size matter? | Type | A1 Journal article | ||
Year | 2018 | Publication | Chemical engineering journal | Abbreviated Journal | Chem Eng J |
Volume | 348 | Issue | Pages | 557-568 | |
Keywords | A1 Journal article; Laboratory of adsorption and catalysis (LADCA); Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | DBD plasma reactors are of great interest for environmental and energy applications, such as CO2 conversion, but they suffer from limited conversion and especially energy efficiency. The introduction of packing materials has been a popular subject of investigation in order to increase the reactor performance. Reducing the discharge gap of the reactor below one millimetre can enhance the plasma performance as well. In this work, we combine both effects and use a packed-bed DBD micro plasma reactor to investigate the influence of gap size reduction, in combination with a packing material, on the conversion and efficiency of CO2 dissociation. Packing materials used in this work were SiO2, ZrO2, and Al2O3 spheres as well as glass wool. The results are compared to a regular size reactor as a benchmark. Reducing the discharge gap can greatly increase the CO2 conversion, although at a lower energy efficiency. Adding a packing material further increases the conversion when keeping a constant residence time, but is greatly dependent on the material composition, gap and sphere size used. Maximum conversions of 50–55% are obtained for very long residence times (30 s and higher) in an empty reactor or with certain packing material combinations, suggesting a balance in CO2 dissociation and recombination reactions. The maximum energy efficiency achieved is 4.3%, but this is for the regular sized reactor at a short residence time (7.5 s). Electrical characterization is performed to reveal some trends in the electrical behaviour of the plasma upon reduction of the discharge gap and addition of a packing material. | ||||
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Language | Wos | 000434467000055 | Publication Date | 2018-05-03 | |
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ISSN | 1385-8947 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 6.216 | Times cited | 22 | Open Access | Not_Open_Access: Available from 03.05.2020 |
Notes | We acknowledge financial support from the European Fund for Regional Development through the cross-border collaborative Interreg V program Flanders-the Netherlands (project EnOp), the Fund for Scientific Research (FWO; Grant Number: G.0254.14N) and an IOF-SBO (SynCO2Chem) project from the University of Antwerp. | Approved | Most recent IF: 6.216 | ||
Call Number | PLASMANT @ plasmant @c:irua:151238 | Serial | 4956 | ||
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Author | Lackmann, J.-W.; Wende, K.; Verlackt, C.; Golda, J.; Volzke, J.; Kogelheide, F.; Held, J.; Bekeschus, S.; Bogaerts, A.; Schulz-von der Gathen, V.; Stapelmann, K. | ||||
Title | Chemical fingerprints of cold physical plasmas – an experimental and computational study using cysteine as tracer compound | Type | A1 Journal article | ||
Year | 2018 | Publication | Scientific reports | Abbreviated Journal | Sci Rep-Uk |
Volume | 8 | Issue | 1 | Pages | 7736 |
Keywords | A1 Journal article; Engineering sciences. Technology; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | Reactive oxygen and nitrogen species released by cold physical plasma are being proposed as effectors in various clinical conditions connected to inflammatory processes. As these plasmas can be tailored in a wide range, models to compare and control their biochemical footprint are desired to infer on the molecular mechanisms underlying the observed effects and to enable the discrimination between different plasma sources. Here, an improved model to trace short-lived reactive species is presented. Using FTIR, high-resolution mass spectrometry, and molecular dynamics computational simulation, covalent modifications of cysteine treated with different plasmas were deciphered and the respective product pattern used to generate a fingerprint of each plasma source. Such, our experimental model allows a fast and reliable grading of the chemical potential of plasmas used for medical purposes. Major reaction products were identified to be cysteine sulfonic acid, cystine, and cysteine fragments. Less abundant products, such as oxidized cystine derivatives or S-nitrosylated cysteines, were unique to different plasma sources or operating conditions. The data collected point at hydroxyl radicals, atomic O, and singlet oxygen as major contributing species that enable an impact on cellular thiol groups when applying cold plasma in vitro or in vivo. | ||||
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Language | Wos | 000432275800035 | Publication Date | 2018-05-10 | |
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ISSN | 2045-2322 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 4.259 | Times cited | 19 | Open Access | OpenAccess |
Notes | This work was supported by the German Research Foundation (DFG, grant PAK816 to V.SvdG.), the Federal German Ministry of Education and Research (grant number 03Z22DN12 to K.W. and 03Z22DN11 to S.B.), and the FWO-Flanders (grant number G012413N to A.B.). K.W. likes to thank T. von Woedtke and K.-D. Weltmann for constant support. The authors thank K. Kartaschew for fruitful discussion and G. Bruno for support during mock studies. | Approved | Most recent IF: 4.259 | ||
Call Number | PLASMANT @ plasmant @c:irua:151241 | Serial | 4957 | ||
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Author | Wang, W.; Berthelot, A.; Zhang, Q.; Bogaerts, A. | ||||
Title | Modelling of plasma-based dry reforming: how do uncertainties in the input data affect the calculation results? | Type | A1 Journal article | ||
Year | 2018 | Publication | Journal of physics: D: applied physics | Abbreviated Journal | J Phys D Appl Phys |
Volume | 51 | Issue | 20 | Pages | 204003 |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | One of the main issues in plasma chemistry modeling is that the cross sections and rate coefficients are subject to uncertainties, which yields uncertainties in the modeling results and hence hinders the predictive capabilities. In this paper, we reveal the impact of these uncertainties on the model predictions of plasma-based dry reforming in a dielectric barrier discharge. For this purpose, we performed a detailed uncertainty analysis and sensitivity study. 2000 different combinations of rate coefficients, based on the uncertainty from a log-normal distribution, are used to predict the uncertainties in the model output. The uncertainties in the electron density and electron temperature are around 11% and 8% at the maximum of the power deposition for a 70% confidence level. Still, this can have a major effect on the electron impact rates and hence on the calculated conversions of CO2 and CH4, as well as on the selectivities of CO and H2. For the CO2 and CH4 conversion, we obtain uncertainties of 24% and 33%, respectively. For the CO and H2 selectivity, the corresponding uncertainties are 28% and 14%, respectively. We also identify which reactions contribute most to the uncertainty in the model predictions. In order to improve the accuracy and reliability of plasma chemistry models, we recommend using only verified rate coefficients, and we point out the need for dedicated verification experiments. | ||||
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Language | Wos | 000430960600003 | Publication Date | 2018-04-25 | |
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ISSN | 0022-3727 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 2.588 | Times cited | 7 | Open Access | OpenAccess |
Notes | We acknowledge financial support from the Fund for Scientific Research Flanders (FWO) (Grant No. G.0383.16N) and the TOP-BOF project of the University of Antwerp. The calculations were carried out using the Turing HPC infrastructure at the CalcUA core facility of the Universiteit Antwerpen (UAntwerpen), a division of the Flemish Supercomputer Centre VSC, funded by the Hercules Foundation, the Flemish Government (department EWI) and the UAntwerpen. | Approved | Most recent IF: 2.588 | ||
Call Number | PLASMANT @ plasmant @c:irua:151292 | Serial | 4958 | ||
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Author | Vanraes, P.; Wardenier, N.; Surmont, P.; Lynen, F.; Nikiforov, A.; Van Hulle, S.W.H.; Leys, C.; Bogaerts, A. | ||||
Title | Removal of alachlor, diuron and isoproturon in water in a falling film dielectric barrier discharge (DBD) reactor combined with adsorption on activated carbon textile: Reaction mechanisms and oxidation by-products | Type | A1 Journal article | ||
Year | 2018 | Publication | Journal of hazardous materials | Abbreviated Journal | J Hazard Mater |
Volume | 354 | Issue | Pages | 180-190 | |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | A falling film dielectric barrier discharge (DBD) plasma reactor combined with adsorption on activated carbon textile material was optimized to minimize the formation of hazardous oxidation by-products from the treatment of persistent pesticides (alachlor, diuron and isoproturon) in water. The formation of by-products and the reaction mechanism was investigated by HPLC-TOF-MS. The maximum concentration of each by-product was at least two orders of magnitude below the initial pesticide concentration, during the first 10 min of treatment. After 30 min of treatment, the individual by-product concentrations had decreased to values of at least three orders of magnitude below the initial pesticide concentration. The proposed oxidation pathways revealed five main oxidation steps: dechlorination, dealkylation, hydroxylation, addition of a double-bonded oxygen and nitrification. The latter is one of the main oxidation mechanisms of diuron and isoproturon for air plasma treatment. To our knowledge, this is the first time that the formation of nitrificated intermediates is reported for the plasma treatment of non-phenolic compounds. | ||||
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Language | Wos | 000437814600021 | Publication Date | 2018-05-03 | |
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ISSN | 0304-3894 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 6.065 | Times cited | 4 | Open Access | Not_Open_Access: Available from 04.05.2020 |
Notes | This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors. The authors would like to thank Carbon Cloth Division for Zorflex® samples and personally thank Jack Taylor for fruitful discussion of active carbon water treatment processes | Approved | Most recent IF: 6.065 | ||
Call Number | PLASMANT @ plasmant @c:irua:152179 | Serial | 4989 | ||
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Author | Razzokov, J.; Yusupov, M.; Bogaerts, A. | ||||
Title | Possible Mechanism of Glucose Uptake Enhanced by Cold Atmospheric Plasma: Atomic Scale Simulations | Type | A1 Journal article | ||
Year | 2018 | Publication | Plasma | Abbreviated Journal | |
Volume | 1 | Issue | 1 | Pages | |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | Cold atmospheric plasma (CAP) has shown its potential in biomedical applications, such as wound healing, cancer treatment and bacterial disinfection. Recent experiments have provided evidence that CAP can also enhance the intracellular uptake of glucose molecules which is important in diabetes therapy. In this respect, it is essential to understand the underlying mechanisms of intracellular glucose uptake induced by CAP, which is still unclear. Hence, in this study we try to elucidate the possible mechanism of glucose uptake by cells by performing computer simulations. Specifically, we study the transport of glucose molecules through native and oxidized membranes. Our simulation results show that the free energy barrier for the permeation of glucose molecules across the membrane decreases upon increasing the degree of oxidized lipids in the membrane. This indicates that the glucose permeation rate into cells increases when the CAP oxidation level in the cell membrane is increased. | ||||
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Language | Wos | Publication Date | 2018-06-08 | ||
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ISSN | 2571-6182 | ISBN | Additional Links | UA library record | |
Impact Factor | Times cited | Open Access | OpenAccess | ||
Notes | The computational work was carried out using the Turing HPC infrastructure at the CalcUA core facility of the Universiteit Antwerpen, a division of the Flemish Supercomputer Center VSC, funded by the Hercules Foundation, the Flemish Government (department EWI), and the Universiteit Antwerpen. | Approved | Most recent IF: NA | ||
Call Number | PLASMANT @ plasmant @ plasma1010011c:irua:152176 | Serial | 4990 | ||
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Author | Gao, M.; Zhang, Y.; Wang, H.; Guo, B.; Zhang, Q.; Bogaerts, A. | ||||
Title | Mode Transition of Filaments in Packed-Bed Dielectric Barrier Discharges | Type | A1 Journal article | ||
Year | 2018 | Publication | Catalysts | Abbreviated Journal | Catalysts |
Volume | 8 | Issue | 6 | Pages | 248 |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | We investigated the mode transition from volume to surface discharge in a packed bed dielectric barrier discharge reactor by a two-dimensional particle-in-cell/Monte Carlo collision method. The calculations are performed at atmospheric pressure for various driving voltages and for gas mixtures with different N2 and O2 compositions. Our results reveal that both a change of the driving voltage and gas mixture can induce mode transition. Upon increasing voltage, a mode transition from hybrid (volume+surface) discharge to pure surface discharge occurs, because the charged species can escape much more easily to the beads and charge the bead surface due to the strong electric field at high driving voltage. This significant surface charging will further enhance the tangential component of the electric field along the dielectric bead surface, yielding surface ionization waves (SIWs). The SIWs will give rise to a high concentration of reactive species on the surface, and thus possibly enhance the surface activity of the beads, which might be of interest for plasma catalysis. Indeed, electron impact excitation and ionization mainly take place near the bead surface. In addition, the propagation speed of SIWs becomes faster with increasing N2 content in the gas mixture, and slower with increasing O2 content, due to the loss of electrons by attachment to O2 molecules. Indeed, the negative O-2 ion density produced by electron impact attachment is much higher than the electron and positive O+2 ion density. The different ionization rates between N2 and O2 gases will create different amounts of electrons and ions on the dielectric bead surface, which might also have effects in plasma catalysis. |
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Language | Wos | 000436128600027 | Publication Date | 2018-06-15 | |
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ISSN | 2073-4344 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 3.082 | Times cited | 7 | Open Access | OpenAccess |
Notes | The authors are very grateful to Wei Jiang for the useful discussions on the particle-incell/ Monte-Carlo collision model. | Approved | Most recent IF: 3.082 | ||
Call Number | PLASMANT @ plasmant @c:irua:152171 | Serial | 4991 | ||
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Author | Rezaei, F.; Gorbanev, Y.; Chys, M.; Nikiforov, A.; Van Hulle, S.W.H.; Cos, P.; Bogaerts, A.; De Geyter, N. | ||||
Title | Investigation of plasma-induced chemistry in organic solutions for enhanced electrospun PLA nanofibers | Type | A1 Journal article | ||
Year | 2018 | Publication | Plasma processes and polymers | Abbreviated Journal | Plasma Process Polym |
Volume | 15 | Issue | 6 | Pages | 1700226 |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | Electrospinning is a versatile technique for the fabrication of polymer-based nano/microfibers. Both physical and chemical characteristics of pre-electrospinning polymer solutions affect the morphology and chemistry of electrospun nanofibers. An atmospheric-pressure plasma jet has previously been shown to induce physical modifications in polylactic acid (PLA) solutions. This work aims at investigating the plasma-induced chemistry in organic solutions of PLA, and their effects on the resultant PLA nanofibers. Therefore, very broad range of gas, liquid, and solid (nanofiber) analyzing techniques has been applied. Plasma alters the acidity of the solutions. SEM studies illustrated that complete fiber morphology enhancement only occurred when both PLA and solvent molecules were exposed to preelectrospinning plasma treatment. Additionally, the surface chemistry of the PLA nanofibers was mostly preserved. |
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Language | Wos | 000436407300005 | Publication Date | 2018-03-24 | |
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ISSN | 1612-8850 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 2.846 | Times cited | 12 | Open Access | Not_Open_Access |
Notes | Fonds Wetenschappelijk Onderzoek, G.0379.15N ; FP7 Ideas: European Research Council, 335929 (PLASMATS) ; European Marie Sklodowska-Curie Individual Fellowship “LTPAM”, 657304 ; | Approved | Most recent IF: 2.846 | ||
Call Number | PLASMANT @ plasmant @c:irua:152173 | Serial | 4992 | ||
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Author | Zhang, Q.-Z.; Wang, W.-Z.; Bogaerts, A. | ||||
Title | Importance of surface charging during plasma streamer propagation in catalyst pores | Type | A1 Journal article | ||
Year | 2018 | Publication | Plasma sources science and technology | Abbreviated Journal | Plasma Sources Sci T |
Volume | 27 | Issue | 6 | Pages | 065009 |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | Plasma catalysis is gaining increasing interest, but the underlying mechanisms are far from understood. Different catalyst materials will have different chemical effects, but in addition, they might also have different dielectric constants, which will affect surface charging, and thus the plasma behavior. In this work, we demonstrate that surface charging plays an important role in the streamer propagation and discharge enhancement inside catalyst pores, and in the plasma distribution along the dielectric surface, and this role greatly depends on the dielectric constant of the material. For εr50, surface charging causes the plasma to spread along the dielectric surface and inside the pores, leading to deeper plasma streamer penetration, while for εr>50 or for metallic coatings, the discharge is more localized, due to very weak surface charging. In addition, at εr=50, the significant surface charge density near the pore entrance causes a large potential drop at the sharp pore edges, which induces a strong electric field and results in most pronounced plasma enhancement near the pore entrance. | ||||
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Language | Wos | 000436845700002 | Publication Date | 2018-06-27 | |
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ISSN | 1361-6595 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 3.302 | Times cited | 13 | Open Access | OpenAccess |
Notes | We acknowledge financial support from the European Marie Skłodowska-Curie Individual Fellowship within H2020 (Grant Agreement 702604) and from the TOP-BOF project of the University of Antwerp. This work was carried out in part using the Turing HPC infrastructure at the CalcUA core facility of the Universiteit Antwerpen, a division of the Flemish Supercomputer Center VSC, funded by the Hercules Foundation, the Flemish Government (department EWI) and the University of Antwerp. | Approved | Most recent IF: 3.302 | ||
Call Number | PLASMANT @ plasmant @c:irua:152243 | Serial | 4995 | ||
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Author | Kumar, N.; Attri, P.; Dewilde, S.; Bogaerts, A. | ||||
Title | Inactivation of human pancreatic ductal adenocarcinoma with atmospheric plasma treated media and water: a comparative study | Type | A1 Journal article | ||
Year | 2018 | Publication | Journal of physics: D: applied physics | Abbreviated Journal | J Phys D Appl Phys |
Volume | 51 | Issue | 25 | Pages | 255401 |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | In recent years, the interest in treating cancer cells with plasma treated media (PTM) and plasma treated water (PTW) has increased tremendously. However, the actions of PTM and PTW are still not entirely understood. For instance, it is not clear whether the action of PTM is due to a modification in proteins/amino acids after plasma treatment of the media, or due to reactive oxygen and nitrogen species (RONS) generated from the plasma, or a combination of both effects. To differentiate between the actions of RONS and modified proteins/amino acids on the treatment of cancer cells, we compared the effects of PTM and PTW on two different pancreatic ductal adenocarcinomas (MiaPaca-2, BxPc3) and pancreatic stellate cells (PSCs) (hPSC128-SV). PSCs closely interact with cancer cells to create a tumor-promoting environment that stimulates local tumor progression and metastasis. We treated culture media and deionized water with a cold atmospheric plasma (CAP) jet, and subsequently applied this PTM/PTW at various ratios to the pancreatic cancer and PSC cell lines. We evaluated cell death, intracellular ROS concentrations and the mRNA expression profiles of four oxidative stress-related genes, i.e. Mitogen-activated protein kinase 7 (MAPK7), B-cell lymphoma 2 (BCL2), Checkpoint kinase 1 (CHEK1) and DNA damage-inducible transcript 3, also known as C/EBP homologous protein (CHOP). Our findings demonstrate that PTM and PTW have a similar efficacy to kill pancreatic cancer cells, while PTW is slightly more effective in killing PSCs, as compared to PTM. Furthermore, we observed an enhancement of the intracellular ROS concentrations in both pancreatic cancer cells and PSCs. Thus, it is likely that under our experimental conditions, the anti-cancer activity of PTM can be attributed more to the RONS present in the treated liquid, than to the modification of proteins/amino acids in the media. Furthermore, the fact that the chemo-resistant PSCs were killed by PTM/PTW may offer possibilities for new anti-cancer therapies for pancreatic cancer cells, including PSCs. |
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Language | Wos | 000434266900001 | Publication Date | 2018-06-04 | |
Series Editor | Series Title ![]() |
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Series Volume | Series Issue | Edition | |||
ISSN | 0022-3727 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 2.588 | Times cited | 6 | Open Access | OpenAccess |
Notes | We gratefully acknowledge financial support from the Research Foundation—Flanders (FWO) (grant number 12J5617N) and from the European Marie Skłodowska–Curie Individual Fellowship ‘Anticancer-PAM’ within Horizon2020 (grant number 743546). We also thank Atsushi Masamune (Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Miyagi Prefecture, Japan) for providing us with human PSCs (hPSC128-SV) for this study. | Approved | Most recent IF: 2.588 | ||
Call Number | PLASMANT @ plasmant @c:irua:151962 | Serial | 4997 | ||
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Author | Zhang, Y.-R.; Neyts, E.C.; Bogaerts, A. | ||||
Title | Enhancement of plasma generation in catalyst pores with different shapes | Type | A1 Journal article | ||
Year | 2018 | Publication | Plasma sources science and technology | Abbreviated Journal | Plasma Sources Sci T |
Volume | 27 | Issue | 5 | Pages | 055008 |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | Plasma generation inside catalyst pores is of utmost importance for plasma catalysis, as the existence of plasma species inside the pores affects the active surface area of the catalyst available to the plasma species for catalytic reactions. In this paper, the electric field enhancement, and thus the plasma production inside catalyst pores with different pore shapes is studied with a two-dimensional fluid model. The results indicate that the electric field will be significantly enhanced near tip-like structures. In a conical pore with small opening, the strongest electric field appears at the opening and bottom corners of the pore, giving rise to a prominent ionization rate throughout the pore. For a cylindrical pore, the electric field is only enhanced at the bottom corners of the pore, with lower absolute value, and thus the ionization rate inside the pore is only slightly enhanced. Finally, in a conical pore with large opening, the electric field is characterized by a maximum at the bottom of the pore, yielding a similar behavior for the ionization rate. These results demonstrate that the shape of the pore has a significantly influence on the electric field enhancement, and thus modifies the plasma properties. | ||||
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Language | Wos | 000432351700002 | Publication Date | 2018-05-15 | |
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ISSN | 1361-6595 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 3.302 | Times cited | 11 | Open Access | OpenAccess |
Notes | This work was supported by the Fund for Scientific Research Flanders (FWO) (Grant No. G.0217.14N) and the Fundamental Research Funds for the Central Universities (Grant No. DUT17LK52). | Approved | Most recent IF: 3.302 | ||
Call Number | PLASMANT @ plasmant @c:irua:151546 | Serial | 4998 | ||
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Author | Vanraes, P.; Nikiforov, A.; Bogaerts, A.; Leys, C. | ||||
Title | Study of an AC dielectric barrier single micro-discharge filament over a water film | Type | A1 Journal article | ||
Year | 2018 | Publication | Scientific reports | Abbreviated Journal | Sci Rep-Uk |
Volume | 8 | Issue | 1 | Pages | 10919 |
Keywords | A1 Journal article; Engineering sciences. Technology; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | In the last decades, AC powered atmospheric dielectric barrier discharges (DBDs) in air with a liquid electrode have been proposed as a promising plasma technology with versatile applicability in medicine agriculture and water treatment. The fundamental features of the micro-discharge filaments that make up this type of plasma have, however, not been studied yet in sufficient detail. In order to address this need, we investigated a single DBD micro-discharge filament over a water film in a sphere-to-sphere electrode configuration, by means of ICCD imaging and optical emission spectroscopy. When the water film temporarily acts as the cathode, the plasma duration is remarkably long and shows a clear similarity with a resistive barrier discharge, which we attribute to the resistive nature of the water film and the formation of a cathode fall. As another striking difference to DBD with solid electrodes, a constant glow-like plasma is observed at the water surface during the entire duration of the applied voltage cycle, indicating continuous plasma treatment of the liquid. We propose several elementary mechanisms that might underlie the observed unique behavior, based on the specific features of a water electrode. | ||||
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Language | Wos | 000439101600018 | Publication Date | 2018-07-13 | |
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ISSN | 2045-2322 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 4.259 | Times cited | 3 | Open Access | OpenAccess |
Notes | P. Vanraes acknowledges funding by a University of Antwerp BOF grant. | Approved | Most recent IF: 4.259 | ||
Call Number | PLASMANT @ plasmant @c:irua:152822c:irua:152411 | Serial | 4999 | ||
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Author | Vanraes, P.; Bogaerts, A. | ||||
Title | Plasma physics of liquids—A focused review | Type | A1 Journal article | ||
Year | 2018 | Publication | Applied physics reviews | Abbreviated Journal | Appl Phys Rev |
Volume | 5 | Issue | 3 | Pages | 031103 |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | The interaction of plasma with liquids has led to various established industrial implementations as well as promising applications, including high-voltage switching, chemical analysis, nanomaterial synthesis, and plasma medicine. Along with these numerous accomplishments, the physics of plasma in liquid or in contact with a liquid surface has emerged as a bipartite research field, for which we introduce here the term “plasma physics of liquids.” Despite the intensive research investments during the recent decennia, this field is plagued by some controversies and gaps in knowledge, which might restrict further progress. The main difficulties in understanding revolve around the basic mechanisms of plasma initiation in the liquid phase and the electrical interactions at a plasma-liquid interface, which require an interdisciplinary approach. This review aims to provide the wide applied physics community with a general overview of the field, as well as the opportunities for interdisciplinary research on topics, such as nanobubbles and the floating water bridge, and involving the research domains of amorphous semiconductors, solid state physics, thermodynamics, material science, analytical chemistry, electrochemistry, and molecular dynamics simulations. In addition, we provoke awareness of experts in the field on yet underappreciated question marks. Accordingly, a strategy for future experimental and simulation work is proposed. |
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Language | Wos | 000446117000003 | Publication Date | 2018-07-25 | |
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ISSN | 1931-9401 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 13.667 | Times cited | 33 | Open Access | OpenAccess |
Notes | P. Vanraes acknowledges funding by a University of Antwerp BOF grant. The authors express their gratitude to Professor Dr. Peter Bruggeman (University of Minnesota, USA) for very useful comments on a draft of Sec. III C. P. Vanraes is very grateful to Professor Dr. Lars Pettersson (Stockholm University, Sweden) for the interesting discussions on the microscopic structure of water, to Dr. Xiaolong Deng (National University of Defense Technology, China) for his help with the figures, to Dr. Anton Nikiforov (Ghent University, Belgium) for the help with retrieving the relevant chapter of Ref. 319, and to Dr. Tatiana Nikitenko (Vitebst State Masherov University, Belarus), Katja Nygard (Netherlands), Iryna Kuchakova (Ghent University, Belgium), and Mindaugas Kersys (Lithuania) for their tremendous help with the translation of the corresponding chapter. | Approved | Most recent IF: 13.667 | ||
Call Number | PLASMANT @ plasmant @c:irua:152823 | Serial | 5001 | ||
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Author | Attri, P.; Han, J.; Choi, S.; Choi, E.H.; Bogaerts, A.; Lee, W. | ||||
Title | CAP modifies the structure of a model protein from thermophilic bacteria: mechanisms of CAP-mediated inactivation | Type | A1 Journal article | ||
Year | 2018 | Publication | Scientific reports | Abbreviated Journal | Sci Rep-Uk |
Volume | 8 | Issue | 1 | Pages | 10218 |
Keywords | A1 Journal article; Engineering sciences. Technology; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | Cold atmospheric plasma (CAP) has great potential for sterilization in the food industry, by deactivation of thermophilic bacteria, but the underlying mechanisms are largely unknown. Therefore, we investigate here whether CAP is able to denature/modify protein from thermophilic bacteria. We focus on MTH1880 (MTH) from Methanobacterium thermoautotrophicum as model protein, which we treated with dielectric barrier discharge (DBD) plasma operating in air for 10, 15 and 20 mins. We analysed the structural changes of MTH using circular dichroism, fluorescence and NMR spectroscopy, as well as the thermal and chemical denaturation, upon CAP treatment. Additionally, we performed molecular dynamics (MD) simulations to determine the stability, flexibility and solvent accessible surface area (SASA) of both the native and oxidised protein. | ||||
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Language | Wos | 000437414500004 | Publication Date | 2018-06-29 | |
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ISSN | 2045-2322 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 4.259 | Times cited | 6 | Open Access | OpenAccess |
Notes | We gratefully acknowledge the European Marie Skłodowska-Curie Individual Fellowship “Anticancer-PAM” within Horizon2020 (grant number 743546). This work was also supported by NRF-2017R1A2B2008483 to W.L. through the National Research Foundation of Korea (NRF) and BK+ program (J.H.). E.H.C. acknowledges the NRF (NRF-2016K1A4A3914113 and No. 20100027963). The computational work was carried out using the Turing HPC infrastructure at the CalcUA core facility of the Universiteit Antwerpen (UA), a division of the Flemish Supercomputer Center VSC, funded by the Hercules Foundation, the Flemish Government (department EWI) and the UA. | Approved | Most recent IF: 4.259 | ||
Call Number | PLASMANT @ plasmant @c:irua:152817c:irua:152431 | Serial | 5002 | ||
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Author | Shaw, P.; Kumar, N.; Kwak, H.S.; Park, J.H.; Uhm, H.S.; Bogaerts, A.; Choi, E.H.; Attri, P. | ||||
Title | Bacterial inactivation by plasma treated water enhanced by reactive nitrogen species | Type | A1 Journal article | ||
Year | 2018 | Publication | Scientific reports | Abbreviated Journal | Sci Rep-Uk |
Volume | 8 | Issue | 1 | Pages | 11268 |
Keywords | A1 Journal article; Engineering sciences. Technology; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | There is a growing body of literature that recognizes the importance of plasma treated water (PTW)for inactivation of microorganism. However, very little attention has been paid to the role of reactive nitrogen species (RNS) in deactivation of bacteria. The aim of this study is to explore the role of RNS in bacterial killing, and to develop a plasma system with increased sterilization efficiency. To increase the concentration of reactive oxygen and nitrogen species (RONS) in solution, we have used vapor systems (DI water/HNO3 at different wt%) combined with plasma using N2 as working gas. The results show that the addition of the vapor system yields higher RONS contents. Furthermore, PTW produced by N2 + 0.5 wt% HNO3 vapor comprises a large amount of both RNS and ROS, while PTW created by N2 + H2O vapor consists of a large amount of ROS, but much less RNS. Interestingly, we observed more deactivation of E. Coli with PTW created by N2 + 0.5 wt% HNO3 vapor plasma as compared to PTW generated by the other plasma systems. This work provides new insight into the role of RNS along with ROS for deactivation of bacteria. | ||||
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Language | Wos | 000439805700029 | Publication Date | 2018-07-20 | |
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ISSN | 2045-2322 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 4.259 | Times cited | 17 | Open Access | OpenAccess |
Notes | We gratefully acknowledge the Leading Foreign Research Institute Recruitment program (Grant # NRF- 2016K1A4A3914113) throughout the Basic Science Research Program of the National Research Foundation (NRF) of Korea and in part by Kwangwoon University 2018. JHP thanks to NRF Grant No. NRF- 2017R1D1A1B03033495. We also acknowledge financial support from the Research Foundation – Flanders (FWO) (Grant Number 12J5617N) and from the European Marie Skłodowska-Curie Individual Fellowship “Anticancer-PAM” within Horizon 2020 (Grant Number 743546). | Approved | Most recent IF: 4.259 | ||
Call Number | PLASMANT @ plasmant @c:irua:152821 | Serial | 5003 | ||
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Author | Razzokov, J.; Yusupov, M.; Cordeiro, R.M.; Bogaerts, A. | ||||
Title | Atomic scale understanding of the permeation of plasma species across native and oxidized membranes | Type | A1 Journal article | ||
Year | 2018 | Publication | Journal of physics: D: applied physics | Abbreviated Journal | J Phys D Appl Phys |
Volume | 51 | Issue | 36 | Pages | 365203 |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | Cold atmospheric plasmas (CAPs) have attracted significant interest for their potential benefits in medical applications, including cancer therapy. The therapeutic effects of CAPs are related to reactive oxygen and nitrogen species (ROS and RNS) present in the plasma. The impact of ROS has been extensively studied, but the role of RNS in CAP-treatment remains poorly understood at the molecular level. Here, we investigate the permeation of RNS and ROS across native and oxidized phospholipid bilayers (PLBs) by means of computer simulations. The results reveal significantly lower free energy barriers for RNS (i.e. NO, NO2, N2O4) and O3 compared to hydrophilic ROS, such as OH, HO2 and H2O2. This suggests that the investigated RNS and O3 can permeate more easily through both native and oxidized PLBs in comparison to hydrophilic ROS, indicating their potentially important role in plasma medicine. | ||||
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Language | Wos | 000441182400002 | Publication Date | 2018-08-08 | |
Series Editor | Series Title ![]() |
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Series Volume | Series Issue | Edition | |||
ISSN | 0022-3727 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 2.588 | Times cited | 10 | Open Access | OpenAccess |
Notes | M Y gratefully acknowledges financial support from the Research Foundation—Flanders (FWO), grant 1200216N. The computational work was carried out using the Turing HPC infrastructure at the CalcUA core facility of the Universiteit Antwerpen (UA), a division of the Flemish Supercomputer Center VSC, funded by the Hercules Foundation, the Flemish Government (department EWI) and the UA. RMC thanks FAPESP and CNPq for financial support (grants 2012/50680-5 and 459270/2014-1, respectively). | Approved | Most recent IF: 2.588 | ||
Call Number | PLASMANT @ plasmant @c:irua:152824 | Serial | 5005 | ||
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Author | De Backer, J.; Razzokov, J.; Hammerschmid, D.; Mensch, C.; Hafideddine, Z.; Kumar, N.; van Raemdonck, G.; Yusupov, M.; Van Doorslaer, S.; Johannessen, C.; Sobott, F.; Bogaerts, A.; Dewilde, S. | ||||
Title | The effect of reactive oxygen and nitrogen species on the structure of cytoglobin: A potential tumor suppressor | Type | A1 Journal article | ||
Year | 2018 | Publication | Redox Biology | Abbreviated Journal | Redox Biol |
Volume | 19 | Issue | Pages | 1-10 | |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT); Molecular Spectroscopy (MolSpec) | ||||
Abstract | Many current anti-cancer therapies rely on increasing the intracellular reactive oxygen and nitrogen species (RONS) contents with the aim to induce irreparable damage, which subsequently results in tumor cell death. A novel tool in cancer therapy is the use of cold atmospheric plasma (CAP), which has been found to be very effective in the treatment of many different cancer cell types in vitro as well as in vivo, mainly through the vast generation of RONS. One of the key determinants of the cell's fate will be the interaction of RONS, generated by CAP, with important proteins, i.e. redox-regulatory proteins. One such protein is cytoglobin (CYGB), a recently discovered globin proposed to be involved in the protection of the cell against oxidative stress. In this study, the effect of plasma-produced RONS on CYGB was investigated through the treatment of CYGB with CAP for different treatment times. Spectroscopic analysis of CYGB showed that although chemical modifications occur, its secondary structure remains intact. Mass spectrometry experiments identified these modifications as oxidations of mainly sulfur-containing and aromatic amino acids. With longer treatment time, the treatment was also found to induce nitration of the heme. Furthermore, the two surface-exposed cysteine residues of CYGB were oxidized upon treatment, leading to the formation of intermolecular disulfide bridges, and potentially also intramolecular disulfide bridges. In addition, molecular dynamics and docking simulations confirmed, and further show, that the formation of an intramolecular disulfide bond, due to oxidative conditions, affects the CYGB 3D structure, thereby opening the access to the heme group, through gate functioning of His117. Altogether, the results obtained in this study (1) show that plasma-produced RONS can extensively oxidize proteins and (2) that the oxidation status of two redox-active cysteines lead to different conformations of CYGB. | ||||
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Language | Wos | 000449722100002 | Publication Date | 2018-07-24 | |
Series Editor | Series Title ![]() |
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ISSN | 2213-2317 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 6.337 | Times cited | Open Access | OpenAccess | |
Notes | M.Y. and N.K. gratefully acknowledge financial support from the Research Foundation – Flanders (FWO), Grant nos. 1200216N and 12J5617N. The computational work was carried out using the Turing HPC infrastructure at the CalcUA core facility of the Universiteit Antwerpen (UA), a division of the Flemish Supercomputer Center VSC, funded by the Hercules Foundation, the Flemish Government (department EWI). C.M acknowledges the financial support provided by the Flemish Community and the University of Antwerp (BOF-NOI) for the pre-doctoral scholarship is under grant number/project ID: 28465. S.V.D., S. D. and Z.H. acknowledge the FWO (Grant G.0687.13) and the GOA-BOF UA 2013–2016 (project-ID 28312) for funding. The computational resources and services used in this work were provided by the HPC core facility CalcUA of the Universiteit Antwerpen, and VSC (Flemish Supercomputer Center), funded by the Research Foundation – Flanders (FWO) and the Flemish Government – department EWI. | Approved | Most recent IF: 6.337 | ||
Call Number | PLASMANT @ plasmant @c:irua:152818 | Serial | 5006 | ||
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Author | Yusupov, M.; Lackmann, J.-W.; Razzokov, J.; Kumar, S.; Stapelmann, K.; Bogaerts, A. | ||||
Title | Impact of plasma oxidation on structural features of human epidermal growth factor | Type | A1 Journal article | ||
Year | 2018 | Publication | Plasma processes and polymers | Abbreviated Journal | Plasma Process Polym |
Volume | 15 | Issue | 8 | Pages | 1800022 |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | We perform computer simulations supported by experiments to investigate the oxidation of an important signaling protein, that is, human epidermal growth factor (hEGF), caused by cold atmospheric plasma (CAP) treatment. Specifically, we study the conformational changes of hEGF with different degrees of oxidation, to mimic short and long CAP treatment times. Our results indicate that the oxidized structures become more flexible, due to their conformational changes and breakage of the disulfide bonds, especially at higher oxidation degrees. MM/GBSA calculations reveal that an increasing oxidation level leads to a lower binding free energy of hEGF with its receptor. These results help to understand the fundamentals of the use of CAP for wound healing versus cancer treatment at short and longer treatment times. | ||||
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000441895700004 | Publication Date | 2018-05-07 | |
Series Editor | Series Title ![]() |
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Series Volume | Series Issue | Edition | |||
ISSN | 1612-8850 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 2.846 | Times cited | 7 | Open Access | Not_Open_Access |
Notes | Fonds Wetenschappelijk Onderzoek, 1200216N ; Bundesministerium für Bildung und Forschung, 03Z22DN12 ; | Approved | Most recent IF: 2.846 | ||
Call Number | PLASMANT @ plasmant @c:irua:152815 | Serial | 5008 | ||
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Author | Mannaerts, D.; Faes, E.; Cos, P.; Briedé, J.J.; Gyselaers, W.; Cornette, J.; Gorbanev, Y.; Bogaerts, A.; Spaanderman, M.; Van Craenenbroeck, E.; Jacquemyn, Y.; Torrens, C. | ||||
Title | Oxidative stress in healthy pregnancy and preeclampsia is linked to chronic inflammation, iron status and vascular function | Type | University Hospital Antwerp | ||
Year | 2018 | Publication | PLoS ONE | Abbreviated Journal | Plos One |
Volume | 13 | Issue | 9 | Pages | e0202919 |
Keywords | University Hospital Antwerp; A1 Journal article; Engineering sciences. Technology; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT); Antwerp Surgical Training, Anatomy and Research Centre (ASTARC); Translational Pathophysiological Research (TPR) | ||||
Abstract | Background During normal pregnancy, placental oxidative stress (OS) is present during all three trimesters and is necessary to obtain normal cell function. However, if OS reaches a certain level, pregnancy complications might arise. In preeclampsia (PE), a dangerous pregnancy specific hypertensive disorder, OS induced in the ischemic placenta causes a systemic inflammatory response and activates maternal endothelial cells. In this study, we aimed to quantify superoxide concentrations (as a measure of systemic OS) using electron paramagnetic resonance (EPR) and correlate them to markers of systemic inflammation, iron status and vascular function. Methods Fifty-nine women with a healthy pregnancy (HP), 10 non-pregnant controls (NP) and 28 PE patients (32±3.3weeks) were included. During HP, blood samples for superoxide, neutrophil to lymphocyte ratio (NLR), mean platelet volume (MPV) and iron status were taken at 10, 25 and 39 weeks. Vascular measurements for arterial stiffness (carotid-femoral pulse wave velocity (CF-PWV), augmentation index (AIx), augmentation Pressure (AP)) and microvascular endothelial function (reactive hyperemia index (RHI)) were performed at 35 weeks. In PE, all measurements were performed at diagnosis. CMH (1-hydroxy-3-methoxycarbonyl-2,2,5,5-tetramethylpyrrolidine) was used as spin probe for EPR, since the formed CM radical corresponds to the amount of superoxide. Results Superoxide concentration remains stable during pregnancy (p = 0.92), but is significantly higher compared to the NP controls (p<0.0001). At 25 weeks, there is a significant positive correlation between superoxide and ferritin concentration. (p = 0.04) In PE, superoxide, systemic inflammation and iron status are much higher compared to HP (all p<0.001). During HP, superoxide concentrations correlate significantly with arterial stiffness (all p<0.04), while in PE superoxide is significantly correlated to microvascular endothelial function (p = 0.03). Conclusions During HP there is an increased but stable oxidative environment, which is correlated to ferritin concentration. If superoxide levels increase, there is an augmentation in arterial stiffness. In PE pregnancies, systemic inflammation and superoxide concentrations are higher and result in a deterioration of endothelial function. Together, these findings support the hypothesis that vascular function is directly linked to the amount of OS and that measurement of OS in combination with vascular function tests might be used in the prediction of PE. |
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000444355500010 | Publication Date | 2018-09-11 | |
Series Editor | Series Title ![]() |
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ISSN | 1932-6203 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 2.806 | Times cited | 15 | Open Access | OpenAccess |
Notes | This study is part of a PhD-thesis which is supported by the University of Antwerp and the Department Obstetrics and Gynaecology of the Antwerp University Hospital. The University of Antwerp provides the earnings for the principal investigator (DM) who is responsible for the design of the study, data collection and interpretation and writing of the manuscript. The Antwerp University Hospital supports the financial part of data collection. EMVC is supported by the fund for scientific research-Flanders (FWO) as senior clinical investigator. | Approved | Most recent IF: 2.806 | ||
Call Number | PLASMANT @ plasmant @c:irua:153802c:irua:153644 | Serial | 5048 | ||
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Author | Brandenburg, R.; Bogaerts, A.; Bongers, W.; Fridman, A.; Fridman, G.; Locke, B.R.; Miller, V.; Reuter, S.; Schiorlin, M.; Verreycken, T.; Ostrikov, K.K. | ||||
Title | White paper on the future of plasma science in environment, for gas conversion and agriculture | Type | A1 Journal article | ||
Year | 2019 | Publication | Plasma processes and polymers | Abbreviated Journal | Plasma Process Polym |
Volume | 16 | Issue | 1 | Pages | 1700238 |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | Climate change, environmental pollution control, and resource utilization efficiency, as well as food security, sustainable agriculture, and water supply are among the main challenges facing society today. Expertise across different academic fields, technologies,anddisciplinesisneededtogeneratenewideastomeetthesechallenges. This “white paper” aims to provide a written summary by describing the main aspects and possibilities of the technology. It shows that plasma science and technology can make significant contributions to address the mentioned issues. The paper also addresses to people in the scientific community (inside and outside plasma science) to give inspiration for further work in these fields. | ||||
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Language | Wos | 000455413600004 | Publication Date | 2018-07-05 | |
Series Editor | Series Title ![]() |
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ISSN | 1612-8850 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 2.846 | Times cited | 19 | Open Access | Not_Open_Access |
Notes | This paper is a result of the PlasmaShape project, supported by funding from the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement no. 316216. During this project, young scientists and renowned and outstanding scientists collaborated in the development of a political-scientific consensus paper as well as six scientific, strategic white papers. In an unique format core themes such as energy, optics and glass, medicine and hygiene, aerospace and automotive, plastics and textiles, environment and agriculture and their future development were discussed regarding scientific relevance and economic impact. We would like to thank our colleagues from 18 nations from all over the world (Australia, Belgium, Czech Republic, PR China, France, Germany, Great Britain, Italy, Japan, The Netherlands, Poland, Romania, Russia, Slovakia, Slovenia, Sweden, Switzerland, USA) who have participated both workshops of Future in Plasma Science I and II in Greifswald in 2015/2016. The valuable contribution of all participants during the workshops, the intensive cooperation between the project partners, and the comprehensive input of all working groups of Future in Plasma Science was the base for the present paper. Kindly acknowledged is the support of graphical work by C. Desjardins and K. Drescher. | Approved | Most recent IF: 2.846 | ||
Call Number | PLASMANT @ plasmant @UA @ admin @ c:irua:156389 | Serial | 5146 | ||
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Author | Gröger, S.; Ramakers, M.; Hamme, M.; Medrano, J.A.; Bibinov, N.; Gallucci, F.; Bogaerts, A.; Awakowicz, P. | ||||
Title | Characterization of a nitrogen gliding arc plasmatron using optical emission spectroscopy and high-speed camera | Type | A1 Journal article | ||
Year | 2019 | Publication | Journal of physics: D: applied physics | Abbreviated Journal | J Phys D Appl Phys |
Volume | 52 | Issue | 6 | Pages | 065201 |
Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
Abstract | A gliding arc plasmatron (GAP), which is very promising for purification and gas conversion, is characterized in nitrogen using optical emission spectroscopy and high-speed photography, because the cross sections of electron impact excitation of N 2 are well known. The gas temperature (of about 5500 K), the electron density (up to 1.5 × 10 15 cm −3 ) and the reduced electric field (of about 37 Td) are determined using an absolutely calibrated intensified charge- coupled device (ICCD) camera, equipped with an in-house made optical arrangement for simultaneous two-wavelength diagnostics, adapted to the transient behavior of a GA channel in turbulent gas flow. The intensities of nitrogen molecular emission bands, N 2 (C–B,0–0) as well as N + 2 (B–X,0–0), are measured simultaneously. The electron density and the reduced electric field are determined at a spatial resolution of 30 µm, using numerical simulation and measured emission intensities, applying the Abel inversion of the ICCD images. The temporal behavior of the GA plasma channel and the formation of plasma plumes are studied using a high-speed camera. Based on the determined plasma parameters, we suggest that the plasma plume formation is due to the magnetization of electrons in the plasma channel of the GAP by an axial magnetic field in the plasma vortex. |
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Publisher | Place of Publication | Editor | |||
Language | Wos | 000451745900001 | Publication Date | 2018-11-30 | |
Series Editor | Series Title ![]() |
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Series Volume | Series Issue | Edition | |||
ISSN | 0022-3727 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 2.588 | Times cited | 7 | Open Access | Not_Open_Access: Available from 30.11.2019 |
Notes | The authors are very grateful to Professor Kurt Behringer for the development of the program code for simulation of emis- sion spectra of nitrogen. | Approved | Most recent IF: 2.588 | ||
Call Number | PLASMANT @ plasmant @UA @ admin @ c:irua:155974 | Serial | 5141 | ||
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