NANOlab Center of Excellence literature database -- Query Results

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Author	Neyts, E.C.
Title	PECVD growth of carbon nanotubes : from experiment to simulation			Type	A1 Journal article
Year	2012	Publication	Journal of vacuum science and technology: B: micro-electronics processing and phenomena	Abbreviated Journal
Volume	30	Issue	3	Pages	030803-030803,17
Keywords	A1 Journal article; Engineering sciences. Technology; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Abstract	Nanostructured carbon materials show a tremendous variety in atomic structure, morphology, properties, and applications. As all properties are ultimately determined by the structure of the material, a thorough understanding of the growth mechanisms that give rise to the particular structure is critical. On many occasions, it has been shown that plasma enhanced growth can be strongly beneficial. This review will describe the authors current understanding of plasma enhanced growth of carbon nanotubes, the prototypical example of nanostructured carbon materials, as obtained from experiments, simulations, and modeling. Specific emphasis is put on where experiments and computational approaches correspond, and where they differ. Also, the current status on simulating PECVD growth of some other carbon nanomaterials is reviewed, including amorphous carbon, graphene, and metallofullerenes. Finally, computational challenges with respect to the simulation of PECVD growth are identified.
Address
Corporate Author				Thesis
Publisher		Place of Publication	New York, N.Y.	Editor
Language		Wos	000305042000010	Publication Date	2012-04-16
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	2166-2746;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor		Times cited	42	Open Access
Notes				Approved	Most recent IF: NA
Call Number	UA @ lucian @ c:irua:97166			Serial	2570
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Author	Kuriplach, J.; van Petegem, S.; Hou, M.; Van Tendeloo, G.; Schryvers, D.; et al.
Title	Positron annihilation study of nanocrystalline Ni₃Al : simulations and measurements			Type	A1 Journal article
Year	2001	Publication	Materials science forum T2 – 12th International Conference on Positron Annihilation (ICPA-12), AUG 06-12, 2000, UNIV BUNDERSWEHR MUNCHEN, NEUBIBERG, GERMANY	Abbreviated Journal
Volume	363-3	Issue		Pages	94-96
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	A positron lifetime experiment is performed on samples produced by the compaction of nanocrystalline Ni3Al powder synthesized by the inert-gas condensation technique. In the lifetime spectrum we observe two components corresponding to defects. Computer (virtual) samples of n-Ni3Al are obtained using molecular dynamics combined with the Metropolis Monte Carlo technique. Positron lifetime calculations are then performed on selected regions of simulated samples. For this purpose, a new computational technique based on a generalization of the atomic superposition method for non-periodic systems was developed. Lifetimes calculated in this way are compared to experiment.
Address
Corporate Author				Thesis
Publisher		Place of Publication	Lausanne	Editor
Language		Wos		Publication Date	0000-00-00
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0-87849-875-3	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor		Times cited		Open Access
Notes				Approved	Most recent IF: NA
Call Number	UA @ lucian @ c:irua:102865			Serial	2681
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Author	Krsmanovic, R.; Bertoni, G.; Van Tendeloo, G.
Title	Structural characterization of erbium doped LAS glass ceramics obtained by glass melting technique			Type	A1 Journal article
Year	2007	Publication	Materials science forum	Abbreviated Journal
Volume	555	Issue		Pages	377-381
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	Samples of transparent glass-ceramics in the ternary system Li2O-Al2O3-SiO2 (LAS), with Er2O3 as a luminescent dopant, are investigated. The initial glass is obtained by the classical melting technique. In order to induce ceramization of the glass, TiO2 and ZrO2 are added in small amount as nucleating agents. The thermal treatments at 730 and 770 degrees C are carried out to promote formation of titanium zirconate solid solution precipitates. The spatial distribution of the precipitates in the material, their morphology, and their composition are investigated with TEM, HRTEM, HAADF-STEM, EELS and EFTEM. The results demonstrate that with the glass-melting preparation technique it is possible to achieve small nanoparticles with uniform distribution and higher number density than with the sol-gel glass preparation.
Address
Corporate Author				Thesis
Publisher		Place of Publication	Lausanne	Editor
Language		Wos		Publication Date	0000-00-00
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0255-5476	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor		Times cited		Open Access
Notes				Approved	Most recent IF: NA
Call Number	UA @ lucian @ c:irua:94673			Serial	3220
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Author	Nistor, L.C.; van Landuyt, J.; Ralchenko, V.G.; Obratzova, E.D.; Korothushenko, K.G.; Smolin, A.A.
Title	Structural studies of nanocrystalline diamond thin films			Type	A1 Journal article
Year	1997	Publication	Materials science forum	Abbreviated Journal
Volume	239-241	Issue		Pages	115-118
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication	Lausanne	Editor
Language		Wos	A1997BH33W00026	Publication Date	0000-00-00
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0255-5476; 1662-9752	ISBN		Additional Links	UA library record; WoS full record;
Impact Factor		Times cited		Open Access
Notes				Approved	Most recent IF: NA
Call Number	UA @ lucian @ c:irua:21403			Serial	3260
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Author	Vasiliev, A.L.; Stepantsov, E.A.; Ivanov, Z.G.; Olsson, E.; Verbist, K.; Van Tendeloo, G.
Title	Structure of artificial grain boundaries in sapphire bicrystals with intermediate layers			Type	A1 Journal article
Year	1997	Publication	Interface science	Abbreviated Journal
Volume	5	Issue		Pages	223-230
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract
Address
Corporate Author				Thesis
Publisher	Kluwer	Place of Publication	Boston	Editor
Language		Wos	A1997YJ98600002	Publication Date	0000-00-00
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0927-7056	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor		Times cited	3	Open Access
Notes				Approved	Most recent IF: NA
Call Number	UA @ lucian @ c:irua:21451			Serial	3307
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Author	Gagea, B.C.; Liang, D.; Van Tendeloo, G.; Martens, J.A.; Jacobs, P.A.
Title	Synthesis and characterization of nanocrystal zeolite/mesoporous matrix composite material			Type	P1 Proceeding
Year	2006	Publication	Studies in surface science and catalysis	Abbreviated Journal
Volume	162	Issue		Pages	259-266
Keywords	P1 Proceeding; Electron microscopy for materials research (EMAT)
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication	Amsterdam	Editor
Language		Wos	000283580900033	Publication Date	2007-09-07
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0167-2991;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor		Times cited	8	Open Access
Notes				Approved	Most recent IF: NA
Call Number	UA @ lucian @ c:irua:99275			Serial	3413
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Author	Gong, X.; Marmy, P.; Volodin, A.; Amin-Ahmadi, B.; Qin, L.; Schryvers, D.; Gavrilov, S.; Stergar, E.; Verlinden, B.; Wevers, M.; Seefeldt, M.
Title	Multiscale investigation of quasi-brittle fracture characteristics in a 9Cr–1Mo ferritic–martensitic steel embrittled by liquid lead–bismuth under low cycle fatigue			Type	A1 Journal article
Year	2016	Publication	Corrosion science	Abbreviated Journal
Volume	102	Issue	102	Pages	137-152
Keywords	A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
Abstract	Liquid metal embrittlement (LME) induced quasi-brittle fracture characteristics of a 9Cr–1Mo ferritic–martensitic steel (T91) after fatigue cracking in lead–bismuth eutectic (LBE) have been investigated at various length scales. The results show that the LME fracture morphology is primarily characterized by quasi-brittle translath flat regions partially covered by nanodimples, shallow secondary cracks propagating along the martensitic lath boundaries as well as tear ridges covered by micro dimples. These diverse LME fracture features likely indicate a LME mechanism involving multiple physical processes, such as weakening induced interatomic decohesion at the crack tip and plastic shearing induced nano/micro voiding in the plastic zone.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000367275700014	Publication Date	2015-10-22
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0010938X	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor		Times cited	16	Open Access
Notes	The work is financially supported by the MYRRHA project,SCK•CEN, Belgium and partly funded by the European AtomicEnergy Community’s (Euratom) Seventh Framework ProgrammeFP7/2007-2013 under grant agreement No. 604862 (MatISSEproject) and in the framework of the EERA (European EnergyResearch Alliance) Joint Programme on Nuclear Materials. Dr. TomVan der Donck (KU Leuven) is acknowledged for the EBSD mea-surements. The authors are grateful to Dr. Van Renterghem Wouter(SCK•CEN) for fruitful discussion of the TEM results. Xing Gongsincerely acknowledges valuable suggestions from Dr. S.P. Lynch(Defence Science and Technology Organisation and Monash Uni-versity, Melbourne, Australia).			Approved	Most recent IF: NA
Call Number	c:irua:129997			Serial	4013
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Author	Idrissi, H.; Bollinger, C.; Boioli, F.; Schryvers, D.; Cordier, P.
Title	Low-temperature plasticity of olivine revisited with in situ TEM nanomechanical testing			Type	A1 Journal article
Year	2016	Publication	Science Advances	Abbreviated Journal
Volume	2	Issue	2	Pages	e1501671-e1501671
Keywords	A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
Abstract	The rheology of the lithospheric mantle is fundamental to understanding how mantle convection couples with plate tectonics. However, olivine rheology at lithospheric conditions is still poorly understood because experiments are difficult in this temperature range where rocks and mineral become very brittle. We combine techniques of quantitative in situ tensile testing in a transmission electron microscope and numerical modeling of dislocation dynamics to constrain the low-temperature rheology of olivine. We find that the intrinsic ductility of olivine at low temperature is significantly lower than previously reported values, which were obtained under strain-hardened conditions. Using this method, we can anchor rheological laws determined at higher temperature and can provide a better constraint on intermediate temperatures relevant for the lithosphere. More generally, we demonstrate the possibility of characterizing the mechanical properties of specimens, which can be available in the form of submillimeter-sized particles only.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000379620200043	Publication Date	2016-03-12
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	2375-2548	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor		Times cited	32	Open Access
Notes				Approved	Most recent IF: NA
Call Number	UA @ lucian @ c:irua:134983			Serial	4202
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Author	Andersen, Ja.; van 't Veer, K.; Christensen, Jm.; Østberg, M.; Bogaerts, A.; Jensen, Ad.
Title	Ammonia decomposition in a dielectric barrier discharge plasma: Insights from experiments and kinetic modeling			Type	A1 Journal article
Year	2023	Publication	Chemical engineering science	Abbreviated Journal
Volume	271	Issue		Pages	118550
Keywords	A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Abstract	Utilizing ammonia as a storage medium for hydrogen is currently receiving increased attention. A possible method to retrieve the hydrogen is by plasma-catalytic decomposition. In this work, we combined an experimental study, using a dielectric barrier discharge plasma reactor, with a plasma kinetic model, to get insights into the decomposition mechanism. The experimental results revealed a similar effect on the ammonia conversion when changing the flow rate and power, where increasing the specific energy input (higher power or lower flow rate) gave an increased conversion. A conversion as high as 82 % was achieved at a specific energy input of 18 kJ/Nl. Furthermore, when changing the discharge volume from 31 to 10 cm3, a change in the plasma distribution factor from 0.2 to 0.1 was needed in the model to best describe the conversions of the experiments. This means that a smaller plasma volume caused a higher transfer of energy through micro-discharges (non-uniform plasma), which was found to promote the decomposition of ammonia. These results indicate that it is the collisions between NH3 and the high-energy electrons that initiate the decomposition. Moreover, the rate of ammonia destruction was found by the model to be in the order of 1022 molecules/(cm3 s) during the micro-discharges, which is 5 to 6 orders of magnitude higher than in the afterglows. A considerable re-formation of ammonia was found to take place in the afterglows, limiting the overall conversion. In addition, the model revealed that implementation of packing material in the plasma introduced high concentrations of surface-bound hydrogen atoms, which introduced an additional ammonia re-formation pathway through an Eley-Rideal reaction with gas phase NH2. Furthermore, a more uniform plasma is predicted in the presence of MgAl2O4, which leads to a lower average electron energy during micro-discharges and a lower conversion (37 %) at a comparable residence time for the plasma alone (51 %).
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000946293200001	Publication Date	2023-02-09
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0009-2509	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	4.7	Times cited		Open Access	OpenAccess
Notes	We thank Topsoe A/S for providing the packing material used, the research group PLASMANT (UAntwerpen) for sharing their plasma kinetic model and allowing us to perform the calculations on their clusters, and the Department of Chemical and Biochemical Engineering, Technical University of Denmark, for funding this project.			Approved	Most recent IF: 4.7; 2023 IF: 2.895
Call Number	PLASMANT @ plasmant @c:irua:195204			Serial	7237
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Author	Nematollahi, P.
Title	Selectivity of Mo-NC sites for electrocatalytic N₂ reduction : a function of the single atom position on the surface and local carbon topologies			Type	A1 Journal article
Year	2023	Publication	Applied surface science	Abbreviated Journal
Volume	612	Issue		Pages	155908-155909
Keywords	A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Abstract	Transition metal (TM) doped two-dimensional single-atom catalysts are known as a promising class of catalysts for electrocatalytic gas conversion. However, the detailed mechanisms that occur at the surface of these catalysts are still unknown. In the present work, we simulate three Mo-doped nitrogenated graphene structures. In each catalyst, the position of the Mo active site and the corresponding local carbon topologies are different, i.e. MoN4C10 with in-plane Mo atom, MoN4C8 in which Mo atom bridges two adjacent armchair-like graphitic edges, and MoN2C3 in which Mo is doped at the edge of the graphene sheet. Using Density Functional Theory (DFT) calculations we discuss the electrocatalytic activity of Mosingle bondNsingle bondC structures for nitrogen reduction reaction (NRR) with a focus on unraveling the corresponding mechanisms concerning different Mo site positions and C topologies. Our results indicate that the position of the active site centers has a great effect on its electrocatalytic behavior. The gas phase N2 efficiently reduces to ammonia on MoN4C8 via the distal mechanism with an onset potential of −0.51 V. We confirm that the proposed pyridinic structure, MoN4C8, can catalyze NRR effectively with a low overpotential of 0.35 V.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000901469900003	Publication Date	2022-11-30
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0169-4332	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	6.7	Times cited		Open Access	OpenAccess
Notes				Approved	Most recent IF: 6.7; 2023 IF: 3.387
Call Number	UA @ admin @ c:irua:192430			Serial	7275
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Author	Morsdorf, L.; Kashiwar, A.; Kübel, C.; Tasan, C.C.
Title	Carbon segregation and cementite precipitation at grain boundaries in quenched and tempered lath martensite			Type	A1 Journal article
Year	2023	Publication	Materials science and engineering: part A: structural materials: properties, microstructure and processing	Abbreviated Journal
Volume	862	Issue		Pages	144369-21
Keywords	A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
Abstract	Tempering is widely applied to make carbon atoms beneficially rearrange in high strength steel microstructures after quenching; though the nano-scale interaction of carbon atoms with crystallographic defects is hard to experimentally observe. To improve, we investigate the redistribution of carbon atoms along martensite grain boundaries in a quenched and tempered low carbon steel. We observe the tempering-induced microstructural evolution by in-situ heating in a transmission electron microscope (TEM) and by compositional analysis through atom probe tomography (APT). Probe volumes for APT originate from a single martensite packet but in different tempering conditions, which is achieved via a sequential lift-out with in-between tempering treatments. The complementary use of TEM and APT provides crystallographic as well as chemical information on carbon segregation and subsequent carbide precipitation at martensite grain boundaries. The results show that the amount of carbon segregation to martensite grain boundaries is influenced by the boundary type, e.g. low-angle lath or high-angle block boundaries. Also, the growth behavior of cementite precipitates from grain boundary nucleation sites into neighboring martensite grains differs at low- and high-angle grain boundaries. This is due to the crystallographic constraints arising from the semi-coherent orientation relationship between cementite and adjacent martensite. We also show that slower quenching stabilizes thin retained austenite films between martensite grains because of enhanced carbon segregation during cooling. Finally, we demonstrate the effect of carbon redistribution along martensite grain boundaries on the mechanical properties. Here, we compare micro-scale Vickers hardness results from boundary-containing probe volumes to nanoindentation results from pure bulk martensite (boundary-free) probe volumes.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000905165700001	Publication Date	2022-12-07
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0921-5093	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	6.4	Times cited		Open Access	Not_Open_Access
Notes				Approved	Most recent IF: 6.4; 2023 IF: 3.094
Call Number	UA @ admin @ c:irua:192279			Serial	7285
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Author	Li, C.-F.; Chen, L.-D.; Wu, L.; Liu, Y.; Hu, Z.-Y.; Cui, W.-J.; Dong, W.-D.; Liu, X.; Yu, W.-B.; Li, Y.; Van Tendeloo, G.; Su, B.-L.
Title	Directly revealing the structure-property correlation in Na⁺-doped cathode materials			Type	A1 Journal article
Year	2023	Publication	Applied surface science	Abbreviated Journal
Volume	612	Issue		Pages	155810-10
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	The introduction of Na+ is considered as an effective way to improve the performance of Ni-rich cathode materials. However, the direct structure-property correlation for Na+ doped NCM-based cathode materials remain unclear, due to the difficulty of local and accurate structural characterization for light elements such as Li and Na. Moreover, there is the complexity of the modeling for the whole Li ion battery (LIB) system. To tackle the above-mentioned issues, we prepared Na+-doped LiNi0.6Co0.2Mn0.2O2 (Na-NCM622) material. The crystal structure change and the lattice distortion with picometers precision of the Na+-doped material is revealed by Cs-corrected scanning transmission electron microscopy (STEM). Density functional theory (DFT) and the recently proposed electrochemical model, i.e., modified Planck-Nernst-Poisson coupled Frumkin-Butler-Volmer (MPNP-FBV), has been applied to reveal correlations between the activation energy and the charge transfer resistance at multiscale. It is shown that Na+ doping can reduce the activation energy barrier from. G = 1.10 eV to 1.05 eV, resulting in a reduction of the interfacial resistance from 297 O to 134 Omega. Consequently, the Na-NCM622 cathode delivers a superior capacity retention of 90.8 % (159 mAh.g(-1)) after 100 cycles compared to the pristine NCM622 (67.5 %, 108 mAh.g(-1)). Our results demonstrate that the kinetics of Li+ diffusion and the electrochemical reaction can be enhanced by Na+ doping the cathode material.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000892940300001	Publication Date	2022-11-23
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0169-4332	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	6.7	Times cited		Open Access	OpenAccess
Notes				Approved	Most recent IF: 6.7; 2023 IF: 3.387
Call Number	UA @ admin @ c:irua:192758			Serial	7296
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Author	Muys, M.; González Cámara, S.J.; Derese, S.; Spiller, M.; Verliefde, A.; Vlaeminck, S.E.
Title	Dissolution rate and growth performance reveal struvite as a sustainable nutrient source to produce a diverse set of microbial protein			Type	A1 Journal article
Year	2023	Publication	The science of the total environment	Abbreviated Journal
Volume	866	Issue		Pages	161172-161179
Keywords	A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL)
Abstract	To provide for the globally increasing demand for proteinaceous food, microbial protein (MP) has the potential to become an alternative food or feed source. Phosphorus (P), on the other hand, is a critical raw material whose global reserves are declining. Growing MP on recovered phosphorus, for instance, struvite obtained from wastewater treatment, is a promising MP production route that could supply protein-rich products while handling P scarcity. The aim of this study was to explore struvite dissolution kinetics in different MP media and characterize MP production with struvite as sole P-source. Different operational parameters, including pH, temperature, contact surface area, and ion concentrations were tested, and struvite dissolution rates were observed between 0.32 and 4.7 g P/L/d and a solubility between 0.23 and 2.22 g P-based struvite/L. Growth rates and protein production of the microalgae Chlorella vulgaris and Limnospira sp. (previously known as Arthrospira sp.), and the purple non‑sulfur bacterium Rhodopseudomonas palustris on struvite were equal to or higher than growth on conventional potassium phosphate. For aerobic heterotrophic bacteria, two slow-growing communities showed decreased growth on struvite, while the growth was increased for a third fast-growing one. Furthermore, MP protein content on struvite was always comparable to the one obtained when grown on standard media. Together with the low content in metals and micropollutants, these results demonstrate that struvite can be directly applied as an effective nutrient source to produce fast-growing MP, without any previous dissolution step. Combining a high purity recovered product with an efficient way of producing protein results in a strong environmental win-win.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000922040000001	Publication Date	2022-12-24
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0048-9697; 1879-1026	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	9.8	Times cited		Open Access	OpenAccess
Notes				Approved	Most recent IF: 9.8; 2023 IF: 4.9
Call Number	UA @ admin @ c:irua:192943			Serial	7297
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Author	Byrnes, I.; Rossbach, L.M.; Jaroszewicz, J.; Grolimund, D.; Sanchez, D.F.; Gomez-Gonzalez, M.A.; Nuyts, G.; Reinoso-Maset, E.; Janssens, K.; Salbu, B.; Brede, D.A.; Lind, O.C.
Title	Synchrotron XRF and histological analyses identify damage to digestive tract of uranium NP-exposed Daphnia magna			Type	A1 Journal article
Year	2023	Publication	Environmental science and technology	Abbreviated Journal
Volume	57	Issue	2	Pages	1071-1079
Keywords	A1 Journal article; Antwerp X-ray Imaging and Spectroscopy (AXIS)
Abstract	Micro-and nanoscopic X-ray techniques were used to investigate the relationship between uranium (U) tissue distributions and adverse effects to the digestive tract of aquatic model organism Daphnia magna following uranium nanoparticle (UNP) exposure. X-ray absorption computed tomography measure-ments of intact daphnids exposed to sublethal concentrations of UNPs or a U reference solution (URef) showed adverse morphological changes to the midgut and the hepatic ceca. Histological analyses of exposed organisms revealed a high proportion of abnormal and irregularly shaped intestinal epithelial cells. Disruption of the hepatic ceca and midgut epithelial tissues implied digestive functions and intestinal barriers were compro-mised. Synchrotron-based micro X-ray fluorescence (XRF) elemental mapping identified U co-localized with morphological changes, with substantial accumulation of U in the lumen as well as in the epithelial tissues. Utilizing high-resolution nano-XRF, 400-1000 nm sized U particulates could be identified throughout the midgut and within hepatic ceca cells, coinciding with tissue damages. The results highlight disruption of intestinal function as an important mode of action of acute U toxicity in D. magna and that midgut epithelial cells as well as the hepatic ceca are key target organs.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000910915100001	Publication Date	2023-01-04
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0013-936x; 1520-5851	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	11.4	Times cited		Open Access	OpenAccess
Notes				Approved	Most recent IF: 11.4; 2023 IF: 6.198
Call Number	UA @ admin @ c:irua:193478			Serial	7342
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Author	Fitawok, M.B.; Derudder, B.; Minale, A.S.; Van Passel, S.; Adgo, E.; Nyssen, J.
Title	Stakeholder perspectives on farmers' resistance towards urban land-use changes in Bahir Dar, Ethiopia			Type	A1 Journal article
Year	2023	Publication	Journal of land use science	Abbreviated Journal
Volume	18	Issue	1	Pages	25-38
Keywords	A1 Journal article; Engineering Management (ENM)
Abstract	Owing to growing uncontrolled land-use change and urban expansion, farmers in urban fringes are struggling to sustain their livelihood. Farmers have been expressing their dissatisfaction at different times. This study analyzes the stakeholders' perspectives on the causes and outcomes of farmers' resistance to land-use change and urban expansion processes by zooming in on Bahir Dar, Ethiopia. The paper is based on focus group discussions with farmers in the neighboring villages, local agricultural extension experts, and, subsequently, key informant interviews of local government officials. Juxtaposing farmers' and local experts' positions reveals that inadequate compensations during land expropriation, lack of good governance in the urban expansion process, and inaccessibility of infrastructures are primary reasons for the farmers' struggle against urban expansion in the urban fringes. This study provides insights into the consequences of unplanned urban development challenges and may inform research and policymaking on sustainable urban development in the area and beyond.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000936397600001	Publication Date	2023-02-22
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1747-423x; 1747-4248	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	3.2	Times cited		Open Access	OpenAccess
Notes				Approved	Most recent IF: 3.2; 2023 IF: NA
Call Number	UA @ admin @ c:irua:195109			Serial	7368
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Author	Benedet, M.; Andrea Rizzi, G.; Gasparotto, A.; Gauquelin, N.; Orekhov, A.; Verbeeck, J.; Maccato, C.; Barreca, D.
Title	Functionalization of graphitic carbon nitride systems by cobalt and cobalt-iron oxides boosts solar water oxidation performances			Type	A1 Journal article
Year	2023	Publication	Applied surface science	Abbreviated Journal
Volume	618	Issue		Pages	156652
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	The ever-increasing energy demand from the world population has made the intensive use of fossil fuels an overarching threat to global environment and human health. An appealing alternative is offered by sunlight-assisted photoelectrochemical water splitting to yield carbon-free hydrogen fuel, but kinetic limitations associated to the oxygen evolution reaction (OER) render the development of cost-effective, eco-friendly and stable electrocatalysts an imperative issue. In the present work, OER catalysts based on graphitic carbon nitride (g-C3N4) were deposited on conducting glass substrates by a simple decantation procedure, followed by functionalization with low amounts of nanostructured CoO and CoFe2O4 by radio frequency (RF)-sputtering, and final annealing under inert atmosphere. A combination of advanced characterization tools was used to investigate the interplay between material features and electrochemical performances. The obtained results highlighted the formation of a p-n junction for the g-C3N4-CoO system, whereas a Z-scheme junction accounted for the remarkable performance enhancement yielded by g-C3N4-CoFe2O4. The intimate contact between the system components also afforded an improved electrocatalyst stability in comparison to various bare and functionalized g-C3N4-based systems. These findings emphasize the importance of tailoring g-C3N4 chemico-physical properties through the dispersion of complementary catalysts to fully exploit its applicative potential.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000950654300001	Publication Date	2023-02-04
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0169-4332	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	6.7	Times cited	11	Open Access	OpenAccess
Notes	The authors gratefully acknowledge financial support from CNR (Progetti di Ricerca @CNR – avviso 2020 – ASSIST), Padova University (P-DiSC#04BIRD2020-UNIPD EUREKA, DOR 2020–2022), AMGA Foundation (NYMPHEA project), INSTM Consortium (INSTM21PDGASPAROTTO – NANOMAT, INSTM21PDBARMAC – ATENA) and the European Union's Horizon 2020 research and innovation program under grant agreement No 823717 – ESTEEM3. The FWO-Hercules fund G0H4316N 'Direct electron detector for soft matter TEM' is also acknowledged. Many thanks are due to Prof. Luca Gavioli (Università Cattolica del Sacro Cuore, Brescia, Italy) and Dr. Riccardo Lorenzin (Department of Chemical Sciences, Padova University, Italy) for their invaluable technical support.; esteem3reported; esteem3TA			Approved	Most recent IF: 6.7; 2023 IF: 3.387
Call Number	EMAT @ emat @c:irua:196150			Serial	7376
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Author	Niklas, K.J.; Shi, P.; Gielis, J.; Schrader, J.; Niinemets, U.
Title	Editorial: leaf functional traits : ecological and evolutionary implications			Type	Editorial
Year	2023	Publication	Frontiers in plant science	Abbreviated Journal
Volume	14	Issue		Pages	1169558-5
Keywords	Editorial; Sustainable Energy, Air and Water Technology (DuEL)
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000964122500001	Publication Date	2023-03-21
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1664-462x	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	5.6	Times cited		Open Access	OpenAccess
Notes				Approved	Most recent IF: 5.6; 2023 IF: 4.298
Call Number	UA @ admin @ c:irua:196076			Serial	7834
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Author	Biondo, O.; Hughes, A.; van der Steeg, A.; Maerivoet, S.; Loenders, B.; van Rooij, G.; Bogaerts, A.
Title	Power concentration determined by thermodynamic properties in complex gas mixtures : the case of plasma-based dry reforming of methane			Type	A1 Journal article
Year	2023	Publication	Plasma sources science and technology	Abbreviated Journal
Volume	32	Issue	4	Pages	045001-45020
Keywords	A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Abstract	We investigate discharge contraction in a microwave plasma at sub-atmospheric pressure, operating in CO2 and CO2/CH4 mixtures. The rise of the electron number density with plasma contraction intensifies the gas heating in the core of the plasma. This, in turn, initiates fast core-periphery transport and defines the rate of thermal chemistry over plasma chemistry. In this context, power concentration describes the overall mechanism including plasma contraction and chemical kinetics. In a complex chemistry such as dry reforming of methane, transport of reactive species is essential to define the performance of the reactor and achieve the desired outputs. Thus, we couple experimental observations and thermodynamic calculations for model validation and understanding of reactor performance. Adding CH4 alters the thermodynamic properties of the mixture, especially the reactive component of the heat conductivity. The increase in reactive heat conductivity increases the pressure at which plasma contraction occurs, because higher rates of gas heating are required to reach the same temperature. In addition, we suggest that the predominance of heat conduction over convection is a key condition to observe the effect of heat conductivity on gas temperature.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000963579500001	Publication Date	2023-03-23
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0963-0252	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	3.8	Times cited		Open Access	Not_Open_Access
Notes				Approved	Most recent IF: 3.8; 2023 IF: 3.302
Call Number	UA @ admin @ c:irua:196044			Serial	8397
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Author	Tsonev, I.; Boothroyd, J.; Kolev, S.; Bogaerts, A.
Title	Simulation of glow and arc discharges in nitrogen: effects of the cathode emission mechanisms			Type	A1 Journal Article
Year	2023	Publication	PLASMA SOURCES SCIENCE & TECHNOLOGY	Abbreviated Journal
Volume	32	Issue	5	Pages	054002
Keywords	A1 Journal Article; Plasma, laser ablation and surface modeling Antwerp (PLASMANT) ;
Abstract	Experimental evidence in the literature has shown that low-current direct current nitrogen discharges can exist in both glow and arc regimes at atmospheric pressure. However, modelling investigations of the positive column that include the influence of the cathode phenomena are scarce. In this work we developed a 2D axisymmetric model of a plasma discharge in flowing nitrogen gas, studying the influence of the two cathode emission mechanisms—thermionic field emission and secondary electron emission—on the cathode region and the positive column. We show for an inlet gas flow velocity of 1 m s<sup>−1</sup>in the current range of 80–160 mA, that the electron emission mechanism from the cathode greatly affects the size and temperature of the cathode region, but does not significantly influence the discharge column at atmospheric pressure. We also demonstrate that in the discharge column the electron density balance is local and the electron production and destruction is dominated by volume processes. With increasing flow velocity, the discharge contraction is enhanced due to the increased convective heat loss. The cross sectional area of the conductive region is strongly dependent on the gas velocity and heat conductivity of the gas.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000987841800001	Publication Date	2023-05-01
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0963-0252	ISBN		Additional Links	UA library record; WoS full record
Impact Factor	3.8	Times cited		Open Access	Not_Open_Access
Notes	This research is financially supported by the European Union’s Horizon 2020 research and innovation programme under Grant Agreement No. 965546.			Approved	Most recent IF: 3.8; 2023 IF: 3.302
Call Number	PLASMANT @ plasmant @c:irua:196972			Serial	8788
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Author	Tampieri, F.; Espona-Noguera, A.; Labay, C.; Ginebra, M.-P.; Yusupov, M.; Bogaerts, A.; Canal, C.
Title	Does non-thermal plasma modify biopolymers in solution? A chemical and mechanistic study for alginate			Type	A1 Journal Article
Year	2023	Publication	Biomaterials Science	Abbreviated Journal
Volume		Issue		Pages
Keywords	A1 Journal Article; Plasma, laser ablation and surface modeling Antwerp (PLASMANT) ;
Abstract	In the last decades, non-thermal plasma has been extensively investigated as a relevant tool for various biomedical applications, ranging from tissue decontamination to regeneration and from skin treatment to tumor therapies. This high versatility is due to the different kinds and amount of reactive oxygen and nitrogen species that can be generated during a plasma treatment and put in contact with the biological target. Some recent studies report that solutions of biopolymers with the ability to generate hydrogels, when treated with plasma, can enhance the generation of reactive species and influence their stability, resulting thus in the ideal media for indirect treatments of biological targets. The direct effects of the plasma treatment on the structure of biopolymers in water solution, as well as the chemical mechanisms responsible for the enhanced generation of RONS, are not yet fully understood. In this study, we aim at filling this gap by investigating, on the one hand, the nature and extent of the modifications induced by plasma treatment in alginate solutions, and, on the other hand, at using this information to explain the mechanisms responsible for the enhanced generation of reactive species as a consequence of the treatment. The approach we use is twofold: (i) investigating the effects of plasma treatment on alginate solutions, by size exclusion chromatography, rheology and scanning electron microscopy and (ii) study of a molecular model (glucuronate) sharing its chemical structure, by chromatography coupled with mass spectrometry and by molecular dynamics simulations. Our results point out the active role of the biopolymer chemistry during direct plasma treatment. Short-lived reactive species, such as OH radicals and O atoms, can modify the polymer structure, affecting its functional groups and causing partial fragmentation. Some of these chemical modifications, like the generation of organic peroxide, are likely responsible for the secondary generation of long-lived reactive species such as hydrogen peroxide and nitrite ions. This is relevant in view of using biocompatible hydrogels as vehicles for storage and delivery reactive species for targeted therapies.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000973699000001	Publication Date	2023-04-11
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	2047-4830	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	6.6	Times cited		Open Access	Not_Open_Access
Notes	Agència de Gestió d’Ajuts Universitaris i de Recerca, SGR2022-1368 ; H2020 European Research Council, 714793 ; European Cooperation in Science and Technology, CA19110 CA20114 ; Secretaría de Estado de Investigación, Desarrollo e Innovación, PID2019-103892RB-I00/AEI/10.13039/501100011033 ; We thank Gonzalo Rodríguez Cañada and Xavier Solé-Martí (Universitat Politècnica de Catalunya) for help in collecting some of the experimental data and for the useful discussions. This work has been primarily funded by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (grant agreement no. 714793). The authors acknowledge MINECO for PID2019103892RB-I00/AEI/10.13039/501100011033 project (CC). The authors belong to SGR2022-1368 (FT, AEN, CL, MPG, CC) and acknowledge Generalitat de Catalunya for the ICREA Academia Award for Excellence in Research of CC. We thank also COST Actions CA20114 (Therapeutical Applications of Cold Plasmas) and CA19110 (Plasma Applications for Smart and Sustainable Agriculture) for the stimulating environment provided.			Approved	Most recent IF: 6.6; 2023 IF: 4.21
Call Number	PLASMANT @ plasmant @c:irua:196773			Serial	8794
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Author	Muravev, V.; Parastaev, A.; van den Bosch, Y.; Ligt, B.; Claes, N.; Bals, S.; Kosinov, N.; Hensen, E.J.M.
Title	Size of cerium dioxide support nanocrystals dictates reactivity of highly dispersed palladium catalysts			Type	A1 Journal article
Year	2023	Publication	Science	Abbreviated Journal
Volume	380	Issue	6650	Pages	1174-1179
Keywords	A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
Abstract	The catalytic performance of heterogeneous catalysts can be tuned by modulation of the size and structure of supported transition metals, which are typically regarded as the active sites. In single-atom metal catalysts, the support itself can strongly affect the catalytic properties. Here, we demonstrate that the size of cerium dioxide (CeO2) support governs the reactivity of atomically dispersed palladium (Pd) in carbon monoxide (CO) oxidation. Catalysts with small CeO2 nanocrystals (~4 nanometers) exhibit unusually high activity in a CO-rich reaction feed, whereas catalysts with medium-size CeO2 (~8 nanometers) are preferred for lean conditions. Detailed spectroscopic investigations reveal support size–dependent redox properties of the Pd-CeO2 interface.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	001010846100008	Publication Date	2023-06-16
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0036-8075	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	56.9	Times cited	22	Open Access	OpenAccess
Notes	We thank the staff of the MAX IV Laboratory for time on beamline SPECIES under proposals 20200412 and 20190983; E. Kokkonen and A. Klyushin for assistance with NAP-XPS and RPES experiments conducted at SPECIES; staff of the MAX IV Laboratory for time on beamline BALDER under proposal 20200378; K. Klementiev for assistance with XAS measurements; J. Drnec at the ESRF for providing assistance in using beamline ID31; and V. Perez-Dieste and I. Villar Garcia at the CIRCE beamline at ALBA Synchrotron for help with acquiring preliminary RPES data obtained under proposal 2020024219. The synchrotron-based XRD measurements were performed on beamline ID31 at the European Synchrotron Radiation Facility (ESRF), Grenoble, France. Funding: This work was supported by the Netherlands Center for Multiscale Catalytic Energy Conversion (MCEC), a NWO Gravitation program funded by the Ministry of Education, Culture and Science of the Government of the Netherlands (V.M. and E.J.M.H.); the European Research Council (ERC consolidator grant 815128 REALNANO to S.B. and N.C.); and the European Union’s Horizon 2020 Research and Innovation Program (grant 823717–ESTEEM to S.B. and N.C). Research conducted at MAX IV, a Swedish national user facility, is supported by the Swedish Research council under contract 2018-07152, the Swedish Governmental Agency for Innovation Systems under contract 2018-04969, and Formas under contract 2019-02496 (VM).			Approved	Most recent IF: 56.9; 2023 IF: 37.205
Call Number	EMAT @ emat @c:irua:197199			Serial	8801
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Author	Cioni, M.; Delle Piane, M.; Polino, D.; Rapetti, D.; Crippa, M.; Arslan Irmak, E.; Van Aert, S.; Bals, S.; Pavan, G.M.
Title	Sampling real-time atomic dynamics in metal nanoparticles by combining experiments, simulations, and machine learning			Type	A1 Journal article
Year	2024	Publication	Advanced Science	Abbreviated Journal
Volume		Issue		Pages	1-13
Keywords	A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
Abstract	Even at low temperatures, metal nanoparticles (NPs) possess atomic dynamics that are key for their properties but challenging to elucidate. Recent experimental advances allow obtaining atomic-resolution snapshots of the NPs in realistic regimes, but data acquisition limitations hinder the experimental reconstruction of the atomic dynamics present within them. Molecular simulations have the advantage that these allow directly tracking the motion of atoms over time. However, these typically start from ideal/perfect NP structures and, suffering from sampling limits, provide results that are often dependent on the initial/putative structure and remain purely indicative. Here, by combining state-of-the-art experimental and computational approaches, how it is possible to tackle the limitations of both approaches and resolve the atomistic dynamics present in metal NPs in realistic conditions is demonstrated. Annular dark-field scanning transmission electron microscopy enables the acquisition of ten high-resolution images of an Au NP at intervals of 0.6 s. These are used to reconstruct atomistic 3D models of the real NP used to run ten independent molecular dynamics simulations. Machine learning analyses of the simulation trajectories allow resolving the real-time atomic dynamics present within the NP. This provides a robust combined experimental/computational approach to characterize the structural dynamics of metal NPs in realistic conditions. Experimental and computational techniques are bridged to unveil atomic dynamics in gold nanoparticles (NPs), using annular dark-field scanning transmission electron microscopy and molecular dynamics simulations informed by machine learning. The approach provides unprecedented insights into the real-time structural behaviors of NPs, merging state-of-the-art techniques to accurately characterize their dynamics under realistic conditions. image
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	001206888000001	Publication Date	2024-04-24
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	2198-3844	ISBN		Additional Links	UA library record; WoS full record
Impact Factor	15.1	Times cited		Open Access
Notes	This work was supported by the funding received by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (grant agreement no. 818776- DYNAPOL, no. 770887 PICOMETRICS and no. 815128 REALNANO). The authors also acknowledge the computational resources provided by the Swiss National Supercomputing Center (CSCS), by CINECA, and the Research Foundation Flanders (FWO, Belgium) G.0346.21N.			Approved	Most recent IF: 15.1; 2024 IF: 9.034
Call Number	UA @ admin @ c:irua:205442			Serial	9171
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Author	Raveau, B.; Michel, C.; Hervieu, M.; Van Tendeloo, G.; Maignan, A.
Title	Stabilization of mercury-based superconductors by foreign cations			Type	A1 Journal article
Year	1994	Publication	Annales de chimie (1914) T2 – 4th North-African Materials Science Symposium (JMSM 94), NOV 23-24, 1994, CASABLANCA, MOROCCO	Abbreviated Journal	4th North-African Materials Science Symposium (JMSM 94), NOV 23-24, 1994, CASABLANCA, MOROCCO
Volume	19	Issue	7-8	Pages	487-492
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	The recently discovered superconducting mercury-based cuprates HgBa2Can-1CunO2n+2+delta have proved difficult to synthesize as single phases and are sensitive to environment (CO2, moisture). The present paper gives an overview of new series mercury based superconductors, whose stabilisation is based on the fact that a foreign cation with a higher valency than Hg(II) must be introduced in the mercury layers, in order to fill up partially the oxygen vacancies of these layers. By this method, several new series of superconductors involving strontium instead of barium with critical temperatures ranging from 27 K to 95 K have been isolated : Hg0.5Bi0.5Sr2-xLaxCuO4+delta, Hg(0.5)Bi(0.5)Sr(2)Ca(1-x)R(x)Cu(2)O(6+delta) (R Y, Nd, Pr), Pb0.7Hg0.3Sr2-xLaxCuO4+delta, Pb(0.7)Hg(0.3)Sr(2)Ca(1-x)R(x)Cu(2)O(6+delta) (R = Y, Nd) Hg(1-x)Pr(x)Sr(2)A(1-x')Pr(x') Cu2O6+delta (A = Sr, Ca), Pb0.7Hg0.3Sr2Cu2CO3O7 and Hg1-xCrxSr2CuO4+delta. The behaviour of the praseodymium cuprates that exhibit a rather sharp transition and reach a Tc of 85 K is especially discussed. A method to synthesize new ''Ba-Hg'' superconducting cuprates with the 1212 structure at normal pressure with a Tc up to 110 K is also presented.
Address
Corporate Author				Thesis
Publisher		Place of Publication	Paris	Editor
Language		Wos	A1994RC75300027	Publication Date	0000-00-00
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0151-9107	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor		Times cited	2	Open Access
Notes				Approved	PHYSICS, APPLIED 28/145 Q1 #
Call Number	UA @ lucian @ c:irua:104472			Serial	3137
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Author	Gropp, C.; Canossa, S.; Wuttke, S.; Gándara, F.; Li, Q.; Gagliardi, L.; Yaghi, O.M.
Title	Standard Practices of Reticular Chemistry			Type	A1 Journal article
Year	2020	Publication	Acs Central Science	Abbreviated Journal	Acs Central Sci
Volume	6	Issue	8	Pages	1255-1273
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	Since 1995 when the first of metal−organic frameworks was crystallized with the strong bond approach, where metal ions are joined by charged organic linkers exemplified by carboxylates, followed by proof of their porosity in 1998 and ultrahigh porosity in 1999, a revolution in the development of their chemistry has ensued. This is being reinforced by the discovery of two- and three-dimensional covalent organic frameworks in 2005 and 2007. Currently, the chemistry of such porous, crystalline frameworks is collectively referred to as reticular chemistry, which is being practiced in over 100 countries. The involvement of researchers from various backgrounds and fields, and the vast scope of this chemistry and its societal applications, necessitate articulating the “Standard Practices of Reticular Chemistry”.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000566668400005	Publication Date	2020-08-26
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	2374-7943	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	18.2	Times cited		Open Access	OpenAccess
Notes	S.C. acknowledges the Research Foundation Flanders (FWO) for supporting his research (Project 12ZV120N).			Approved	Most recent IF: 18.2; 2020 IF: 7.481
Call Number	EMAT @ emat @c:irua:172057			Serial	6423
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Author	Tirry, W.; Schryvers, D.; Jorissen, K.; Lamoen, D.
Title	Electron-diffraction structure refinement of Ni₄Ti₃ precipitates in Ni₅₂Ti₄₈			Type	A1 Journal article
Year	2006	Publication	Acta crystallographica: section B: structural science	Abbreviated Journal	Acta Crystallogr B
Volume	62	Issue	6	Pages	966-971
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication	Copenhagen	Editor
Language		Wos	000241992300003	Publication Date	2006-11-16
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0108-7681;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor		Times cited	30	Open Access
Notes	Fwo			Approved	Most recent IF: NA
Call Number	UA @ lucian @ c:irua:61578			Serial	923
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Author	Batuk, D.; Batuk, M.; Abakumov, A.M.; Hadermann, J.
Title	Synergy between transmission electron microscopy and powder diffraction : application to modulated structures			Type	A1 Journal article
Year	2015	Publication	Acta crystallographica: section B: structural science	Abbreviated Journal	Acta Crystallogr B
Volume	71	Issue	71	Pages	127-143
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	The crystal structure solution of modulated compounds is often very challenging, even using the well established methodology of single-crystal X-ray crystallography. This task becomes even more difficult for materials that cannot be prepared in a single-crystal form, so that only polycrystalline powders are available. This paper illustrates that the combined application of transmission electron microscopy (TEM) and powder diffraction is a possible solution to the problem. Using examples of anion-deficient perovskites modulated by periodic crystallographic shear planes, it is demonstrated what kind of local structural information can be obtained using various TEM techniques and how this information can be implemented in the crystal structure refinement against the powder diffraction data. The following TEM methods are discussed: electron diffraction (selected area electron diffraction, precession electron diffraction), imaging (conventional high-resolution TEM imaging, high-angle annular dark-field and annular bright-field scanning transmission electron microscopy) and state-of-the-art spectroscopic techniques (atomic resolution mapping using energy-dispersive X-ray analysis and electron energy loss spectroscopy).
Address
Corporate Author				Thesis
Publisher		Place of Publication	Copenhagen	Editor
Language		Wos	000352166500002	Publication Date	2015-04-01
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	2052-5206;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.032	Times cited	11	Open Access
Notes	Fwo G039211n			Approved	Most recent IF: 2.032; 2015 IF: NA
Call Number	c:irua:124411			Serial	3408
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Author	Arakcheeva, A.; Pattison, P.; Chapuis, G.; Rossell, M.; Filaretov, A.; Morozov, V.; Van Tendeloo, G.
Title	KSm(MoO₄)₂, an incommensurately modulated and partially disordered scheelite-like structure			Type	A1 Journal article
Year	2008	Publication	Acta crystallographica: section B: structural science	Abbreviated Journal	Acta Crystallogr B
Volume	64	Issue	Part 2	Pages	160-171
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	The incommensurately modulated scheelite-like KSm( MoO4)(2) structure has been refined in the monoclinic superspace group I2/b(alpha beta 0)00 by the Rietveld method on the basis of synchrotron radiation powder diffraction data. The systematic broadening of satellite reflections has been accounted for by applying anisotropic microstrain line-broadening. The microstructure has been studied by transmission electron microscopy (TEM). The partial disorder of the K and Sm cations in the A position is best approximated by a combination of harmonic and complex crenel functions with (0.952Sm + 0.048K) and (0.952K + 0.048Sm) atomic domains. This combination yields a compositional wave distribution from {KMoO4} to {SmMoO4} observed in the ab structure projection along q. The specific features of KSm(MoO4)(2) and degree of the A-cation ordering are discussed in comparison with the previously reported structure of KNd(MoO4)(2).
Address
Corporate Author				Thesis
Publisher		Place of Publication	Copenhagen	Editor
Language		Wos	000253992600004	Publication Date	2008-03-28
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0108-7681;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor		Times cited	23	Open Access
Notes				Approved	Most recent IF: NA
Call Number	UA @ lucian @ c:irua:102618			Serial	3539
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Author	Callaert, C.; Bercx, M.; Lamoen, D.; Hadermann, J.
Title	Interstitial defects in the van der Waals gap of Bi₂Se₃			Type	A1 Journal article
Year	2019	Publication	Acta Crystallographica. Section B: Structural Science, Crystal Engineering and Materials (Online)	Abbreviated Journal	Acta Crystallogr B
Volume	75	Issue	4	Pages	717-732
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	Bi<sub>2</sub>Se<sub>3</sub>is a thermoelectric material and a topological insulator. It is slightly conducting in its bulk due to the presence of defects and by controlling the defects different physical properties can be fine tuned. However, studies of the defects in this material are often contradicting or inconclusive. Here, the defect structure of Bi<sub>2</sub>Se<sub>3</sub>is studied with a combination of techniques: high-resolution scanning transmission electron microscopy (HR-STEM), high-resolution energy-dispersive X-ray (HR-EDX) spectroscopy, precession electron diffraction tomography (PEDT), X-ray diffraction (XRD) and first-principles calculations using density functional theory (DFT). Based on these results, not only the observed defects are discussed, but also the discrepancies in results or possibilities across the techniques. STEM and EDX revealed interstitial defects with mainly Bi character in an octahedral coordination in the van der Waals gap, independent of the applied sample preparation method (focused ion beam milling or cryo-crushing). The inherent character of these defects is supported by their observation in the structure refinement of the EDT data. Moreover, the occupancy probability of the defects determined by EDT is inversely proportional to their corresponding DFT calculated formation energies. STEM also showed the migration of some atoms across and along the van der Waals gap. The kinetic barriers calculated using DFT suggest that some paths are possible at room temperature, while others are most probably beam induced.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000480512600024	Publication Date	2019-08-01
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	2052-5206	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.032	Times cited		Open Access
Notes	University of Antwerp, 31445 ; Acknowledgements We thank Artem M. Abakumov for providing the original Bi2Se3 sample and are also very grateful to Christophe Vandevelde for trying repeatedly to get good single crystal X-ray diffraction data out of each of our failed attempts at making an undeformed single crystal. The computational resources and services used in this work were provided by the VSC (Flemish Supercomputer Center) and the HPC infrastructure of the University of Antwerp (CalcUA), both funded by the FWO-Vlaanderen and the Flemish Government-department EWI.			Approved	Most recent IF: 2.032
Call Number	EMAT @ emat @c:irua:161847			Serial	5295
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Author	Missen, O.P.; Mills, S.J.; Canossa, S.; Hadermann, J.; Nenert, G.; Weil, M.; Libowitzky, E.; Housley, R.M.; Artner, W.; Kampf, A.R.; Rumsey, M.S.; Spratt, J.; Momma, K.; Dunstan, M.A.
Title	Polytypism in mcalpineite : a study of natural and synthetic Cu₃TeO₆			Type	A1 Journal article
Year	2022	Publication	Acta Crystallographica. Section B: Structural Science, Crystal Engineering and Materials (Online)	Abbreviated Journal	Acta Crystallogr B
Volume	78	Issue	1	Pages
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	Synthetic and naturally occurring forms of tricopper orthotellurate, (Cu3TeO6)-Te-II-O-IV (the mineral mcalpineite) have been investigated by 3D electron diffraction (3D ED), X-ray powder diffraction (XRPD), Raman and infrared (IR) spectroscopic measurements. As a result of the diffraction analyses, (Cu3TeO6)-Te-II-O-IV is shown to occur in two polytypes. The higher-symmetric (Cu3TeO6)-Te-II-O-IV-1C polytype is cubic, space group 1a (3) over bar, with a = 9.537 (1) angstrom and V = 867.4 (3) angstrom(3) as reported in previous studies. The 1C polytype is a well characterized structure consisting of alternating layers of (CuO6)-O-II octahedra and both (CuO6)-O-II and (TeO6)-O-VI octahedra in a patchwork arrangement. The structure of the lower-symmetric orthorhombic (Cu3TeO6)-Te-II-O-IV-2O polytype was determined for the first time in this study by 3D ED and verified by Rietveld refinement. The 2O polytype crystallizes in space group Pcca, with a = 9.745 (3) angstrom, b = 9.749 (2) angstrom, c = 9.771 (2) angstrom and V = 928.3 (4) angstrom(3) . High-precision XRPD data were also collected on (Cu3TeO6)-Te-II-O-IV-2O to verify the lower-symmetric structure by performing a Rietveld refinement. The resultant structure is identical to that determined by 3D ED, with unit-cell parameters a = 9.56157 (19) angstrom, b = 9.55853 (11) angstrom, c = 9.62891 (15) angstrom and V = 880.03 (2) angstrom(3) . The lower symmetry of the 2O polytype is a consequence of a different cation ordering arrangement, which involves the movement of every second (CuO6)-O-II and (TeO6)-O-VI octahedral layer by (1/4, 1/4, 0), leading to an offset of (TeO6)-O-VI and (CuO6)-O-II octahedra in every second layer giving an ABAB* stacking arrangement. Syntheses of (Cu3TeO6)-Te-II-O-IV showed that low-temperature (473 K) hydrothermal conditions generally produce the 2O polytype. XRPD measurements in combination with Raman spectroscopic analysis showed that most natural mcalpineite is the orthorhombic 2O polytype. Both XRPD and Raman spectroscopy measurements may be used to differentiate between the two polytypes of (Cu3TeO6)-Te-II-O-IV. In Raman spectroscopy, (Cu3TeO6)-Te-II-O-IV-1C has a single strong band around 730 cm(-1), whereas (Cu3TeO6)-Te-II-O-IV-2O shows a broad double maximum with bands centred around 692 and 742 cm(-1).
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000752899700003	Publication Date	2022-01-18
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	2052-5206	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	1.9	Times cited		Open Access	OpenAccess
Notes				Approved	Most recent IF: 1.9
Call Number	UA @ admin @ c:irua:186529			Serial	6962
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Author	Lin, A.; Gorbanev, Y.; De Backer, J.; Van Loenhout, J.; Van Boxem, W.; Lemière, F.; Cos, P.; Dewilde, S.; Smits, E.; Bogaerts, A.
Title	Non‐Thermal Plasma as a Unique Delivery System of Short‐Lived Reactive Oxygen and Nitrogen Species for Immunogenic Cell Death in Melanoma Cells			Type	A1 Journal article
Year	2019	Publication	Advanced Science	Abbreviated Journal	Adv Sci
Volume	6	Issue	6	Pages	1802062
Keywords	A1 Journal article; Engineering sciences. Technology; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT); Center for Oncological Research (CORE)
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000462613100001	Publication Date	2019-01-29
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	2198-3844	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	9.034	Times cited	39	Open Access	OpenAccess
Notes	This study was funded in part by the Flanders Research Foundation (grant no. 12S9218N) and the European Marie Sklodowska-Curie Individual Fellowship within Horizon2020 (LTPAM) grant no. 743151). The microsecond-pulsed power supply was purchased following discussions with the C. & J. Nyheim Plasma Institute at Drexel University. The authors would like to thank Dr. Erik Fransen for his expertise and guidance with the statistical models and analysis used here. The authors would also like to thank Dr. Sander Bekeschus of the Leibniz Institute for Plasma Science and Technology for the discussions at conferences and workshops. A.L. contributed to the design and carrying out of all experiments. A.L. also wrote the manuscript. Y.G. contributed to the design and carrying out of experiments involving chemical measurements. Y.G. also contributed to writing the chemical portions of the manuscript. J.D.B. contributed to the design and carrying out of in vivo experiments. J.D.B. also contributed to writing the portions of the manuscript involving animal experiments and care. J.V.L. contributed to the optimization of the calreticulin protocol used in the experiments. W.V.B. contributed to optimization of colorimetric assays used in the experiments. F.L. contributed to mass spectrometry measurements. P.C., S.D., E.S., and A.B. provided workspace, equipment, and valuable discussions for the project. All authors participated in the review of the manuscript.; Flanders Research Foundation, 12S9218N ; European Marie Sklodowska-Curie Individual Fellowship within Horizon2020, 743151 ;			Approved	Most recent IF: 9.034
Call Number	PLASMANT @ plasmant @UA @ admin @ c:irua:156548			Serial	5165
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