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Author (down) Jiang, J.; Wang, Y.-L.; Milošević, M.V.; Xiao, Z.-L.; Peeters, F.M.; Chen, Q.-H.
  Title Reversible ratchet effects in a narrow superconducting ring Type A1 Journal article
  Year 2021 Publication Physical Review B Abbreviated Journal Phys Rev B
  Volume 103 Issue 1 Pages 014502
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract We study the ratchet effect in a narrow pinning-free superconductive ring based on time-dependent Ginzburg-Landau (TDGL) equations. Voltage responses to external dc and ac currents at various magnetic fields are studied. Due to asymmetric barriers for flux penetration and flux exit in the ring-shaped superconductor, the critical current above which the flux-flow state is reached, as well as the critical current for the transition to the normal state, are different for the two directions of applied current. These effects cooperatively cause ratchet signal reversal at high magnetic fields, which has not been reported to date in a pinning-free system. The ratchet signal found here is larger than those induced by asymmetric pinning potentials. Our results also demonstrate the feasibility of using mesoscopic superconductors to employ a superconducting diode effect in versatile superconducting devices.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000604821500003 Publication Date 2021-01-05
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 2469-9969; 2469-9950 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 3.836 Times cited 4 Open Access OpenAccess
  Notes ; We are grateful to G. Berdiyorov for useful suggestions and comments. Q.-H.C. thanks Beiyi Zhu for helpful discussions during the early stage of this work. This work is supported in part by the National Key Research and Development Program of China, Grants No. 2017YFA0303002 (Q.-H.C. and J.J.), and No. 2018YFA0209002 (Y.-L.W.), and the National Natural Science Foundation of China Grants No. 11834005, No. 11674285, No. 61771235, and No. 61727805. Z.-L.X. acknowledges support by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering and the National Science Foundation under Grant No. DMR-1901843. F.M.P. and M.V.M. acknowledge support by the Research Foundation – Flanders (FWO). ; Approved Most recent IF: 3.836
  Call Number UA @ admin @ c:irua:174984 Serial 6697
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Author (down) Jiang, J.; Milošević, M.V.; Wang, Y.-L.; Xiao, Z.-L.; Peeters, F.M.; Chen, Q.-H.
  Title Field-free superconducting diode in a magnetically nanostructured superconductor Type A1 Journal article
  Year 2022 Publication Physical review applied Abbreviated Journal Phys Rev Appl
  Volume 18 Issue 3 Pages 034064-34069
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract A strong superconducting diode effect (SDE) is revealed in a thin superconducting film periodically nanostructured with magnetic dots. The SDE is caused by the current-activated dissipation mitigated by vortex-antivortex pairs (VAPs), which periodically nucleate under the dots, move and annihilate in the superconductor-eventually driving the system to the high-resistive state. Inversing the polarity of the applied current destimulates the nucleation of VAPs, the system remains superconducting up to far larger currents, leading to the pronounced diodic response. Our dissipative Ginzburg-Landau simulations detail the involved processes, and provide reliable geometric and parametric ranges for the experimental realiza-tion of such a nonvolatile superconducting diode, which operates in the absence of any applied magnetic field while being fluxonic by design.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000870234200001 Publication Date 2022-09-23
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 2331-7019 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 4.6 Times cited 9 Open Access OpenAccess
  Notes Approved Most recent IF: 4.6
  Call Number UA @ admin @ c:irua:191539 Serial 7307
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Author (down) Ji, Z.; Wang, H.; Canossa, S.; Wuttke, S.; Yaghi, O.M.
  Title Pore Chemistry of Metal–Organic Frameworks Type A1 Journal article
  Year 2020 Publication Advanced Functional Materials Abbreviated Journal Adv Funct Mater
  Volume 30 Issue 41 Pages 2000238
  Keywords A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
  Abstract The pores in metal–organic frameworks (MOFs) can be functionalized by placing chemical entities along the backbone and within the backbone. This chemistry is enabled by the architectural, thermal, and chemical robustness of the frameworks and the ability to characterize them by many diffraction and spectroscopic techniques. The pore chemistry of MOFs is articulated in terms of site isolation, coupling, and cooperation and relate that to their functions in guest recognition, catalysis, ion and electron transport, energy transfer, pore‐dynamic modulation, and interface construction. It is envisioned that the ultimate control of pore chemistry requires arranging functionalities into defined sequences and developing techniques for reading and writing such sequences within the pores.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000532830900001 Publication Date 2020-05-16
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 1616-301X ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 19 Times cited Open Access OpenAccess
  Notes (Not present) Approved Most recent IF: 19; 2020 IF: 12.124
  Call Number EMAT @ emat @c:irua:169485 Serial 6422
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Author (down) Jenkinson, K.; Spadaro, M.C.; Golovanova, V.; Andreu, T.; Morante, J.R.; Arbiol, J.; Bals, S.
  Title Direct operando visualization of metal support interactions induced by hydrogen spillover during CO₂ hydrogenation Type A1 Journal article
  Year 2023 Publication Advanced materials Abbreviated Journal
  Volume 35 Issue 51 Pages 2306447-10
  Keywords A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
  Abstract The understanding of catalyst active sites is a fundamental challenge for the future rational design of optimized and bespoke catalysts. For instance, the partial reduction of Ce4+ surface sites to Ce3+ and the formation of oxygen vacancies are critical for CO2 hydrogenation, CO oxidation, and the water gas shift reaction. Furthermore, metal nanoparticles, the reducible support, and metal support interactions are prone to evolve under reaction conditions; therefore a catalyst structure must be characterized under operando conditions to identify active states and deduce structure-activity relationships. In the present work, temperature-induced morphological and chemical changes in Ni nanoparticle-decorated mesoporous CeO2 by means of in situ quantitative multimode electron tomography and in situ heating electron energy loss spectroscopy, respectively, are investigated. Moreover, operando electron energy loss spectroscopy is employed using a windowed gas cell and reveals the role of Ni-induced hydrogen spillover on active Ce3+ site formation and enhancement of the overall catalytic performance.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 001106139400001 Publication Date 2023-10-22
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 0935-9648 ISBN Additional Links UA library record; WoS full record
  Impact Factor 29.4 Times cited Open Access OpenAccess
  Notes Approved Most recent IF: 29.4; 2023 IF: 19.791
  Call Number UA @ admin @ c:irua:201143 Serial 9022
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Author (down) Jenkinson, K.; Liz-Marzan, L.M.; Bals, S.
  Title Multimode electron tomography sheds light on synthesis, structure, and properties of complex metal-based nanoparticles Type A1 Journal article
  Year 2022 Publication Advanced materials Abbreviated Journal Adv Mater
  Volume 34 Issue 36 Pages 2110394-19
  Keywords A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
  Abstract Electron tomography has become a cornerstone technique for the visualization of nanoparticle morphology in three dimensions. However, to obtain in-depth information about a nanoparticle beyond surface faceting and morphology, different electron microscopy signals must be combined. The most notable examples of these combined signals include annular dark-field scanning transmission electron microscopy (ADF-STEM) with different collection angles and the combination of ADF-STEM with energy-dispersive X-ray or electron energy loss spectroscopies. Here, the experimental and computational development of various multimode tomography techniques in connection to the fundamental materials science challenges that multimode tomography has been instrumental to overcoming are summarized. Although the techniques can be applied to a wide variety of compositions, the study is restricted to metal and metal oxide nanoparticles for the sake of simplicity. Current challenges and future directions of multimode tomography are additionally discussed.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000831332200001 Publication Date 2022-04-19
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 0935-9648 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 29.4 Times cited 10 Open Access OpenAccess
  Notes The authors thank the financial support of the European Research Council (ERC-AdG-2017 787510, ERC-CoG-2019 815128) and of the European Commission (EUSMI, Grant 731019 and ESTEEM3, Grant 823717). Approved Most recent IF: 29.4
  Call Number UA @ admin @ c:irua:189616 Serial 7087
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Author (down) Jembrih-Simbürger, D.; Neelmeijer, C.; Schalm, O.; Fredrickx, P.; Schreiner, M.; De Vis, K.; Mäder, M.; Schryvers, D.; Caen, J.
  Title The colour of silver stained glass : analytical investigations carried out with XRF, SEM/EDX, TEM and IBA Type A1 Journal article
  Year 2002 Publication Journal of analytical atomic spectrometry Abbreviated Journal J Anal Atom Spectrom
  Volume 17 Issue Pages 321-328
  Keywords A1 Journal article; Art; Electron microscopy for materials research (EMAT); AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
  Abstract Glass treated on its surface with silver compounds and an aluminosilicate, such as ochre or clay, at higher temperatures (between 550 and 650 °C) accepts a wide variety of a yellow colour. It is the aim of this study to investigate the parameters of the manufacturing process affecting the final colour of silver stained glass and to correlate them with the final colour and colour intensity. Therefore, defined mixtures of ochre and a silver compound (AgCl, AgNO3, Ag2SO4, Ag3PO4, Ag2O) were prepared and applied on soda-lime glass. The firing process was modified within the range from 563 to 630 °C and glass samples were analysed after treatment with energy dispersive X-ray fluorescence analysis (EDXRF), scanning electron microscopy (SEM/EDX), transmission electron microscopy (TEM), as well as ion beam analysis (IBA) with an external beam. Within the scope of IBA simultaneous measurements using particle-induced X-ray emission (PIXE), particle-induced gamma-ray emission (PIGE), and Rutherford backscattering spectrometry (RBS) were carried out in order to obtain the thickness of the Ag-rich surface layer and the depth distribution of Ag. By means of TEM the microstructure of the silver particles was visualised. XRF results show that the lowest amount of Ag could be detected on glass samples treated with silver stain mixtures containing AgCl and Ag2O. A low kiln temperature (e.g. 563 °C) results in a higher silver concentration at the surface and lower penetration depths. Furthermore, the results obtained with SEM/EDX at cross-sections of the glass samples could be confirmed by PIXE, PIGE, RBS, and TEM.
  Address
  Corporate Author Thesis
  Publisher Place of Publication London Editor
  Language Wos 000175158900001 Publication Date 2002-07-26
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 0267-9477;1364-5544; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 3.379 Times cited 42 Open Access
  Notes Approved Most recent IF: 3.379; 2002 IF: 4.250
  Call Number UA @ lucian @ c:irua:48775 Serial 395
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Author (down) Jelić, Ž.L.; Milošević, M.V.; Van de Vondel, J.; Silhanek, A.V.
  Title Stroboscopic phenomena in superconductors with dynamic pinning landscape Type A1 Journal article
  Year 2015 Publication Scientific reports Abbreviated Journal Sci Rep-Uk
  Volume 5 Issue 5 Pages 14604
  Keywords A1 Journal article; Engineering sciences. Technology; Condensed Matter Theory (CMT)
  Abstract Introducing artificial pinning centers is a well established strategy to trap quantum vortices and increase the maximal magnetic field and applied electric current that a superconductor can sustain without dissipation. In case of spatially periodic pinning, a clear enhancement of the superconducting critical current arises when commensurability between the vortex configurations and the pinning landscape occurs. With recent achievements in (ultrafast) optics and nanoengineered plasmonics it has become possible to exploit the interaction of light with superconductivity, and create not only spatially periodic imprints on the superconducting condensate, but also temporally periodic ones. Here we show that in the latter case, temporal matching phenomena develop, caused by stroboscopic commensurability between the characteristic frequency of the vortex motion under applied current and the frequency of the dynamic pinning. The matching resonances persist in a broad parameter space, including magnetic field, driving current, or material purity, giving rise to unusual features such as externally variable resistance/impedance and Shapiro steps in current-voltage characteristics. All features are tunable by the frequency of the dynamic pinning landscape. These findings open further exploration avenues for using flashing, spatially engineered, and/or mobile excitations on superconductors, permitting us to achieve advanced functionalities.
  Address Departement de Physique, Universite de Liege, Allee du 6-Aout 17, B-4000 Liege, Belgium
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language English Wos 000362082500001 Publication Date 2015-10-01
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 2045-2322 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 4.259 Times cited 29 Open Access
  Notes Acknowledgements: This work was supported by the Methusalem Funding of the Flemish Government, the Research Foundation-Flanders (FWO) and the COST Action MP1201. The work of Ž.L.J. and A.V.S. was partially supported by “Mandat d’Impulsion Scientifique” of the F.R.S.-FNRS. Approved Most recent IF: 4.259; 2015 IF: 5.578
  Call Number c:irua:129807 c:irua:129807 Serial 3980
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Author (down) Jelić, Z.L.; Milošević, M.V.; Silhanek, A.V.
  Title Velocimetry of superconducting vortices based on stroboscopic resonances Type A1 Journal article
  Year 2016 Publication Scientific reports Abbreviated Journal Sci Rep-Uk
  Volume 6 Issue Pages 35687
  Keywords A1 Journal article; Engineering sciences. Technology; Condensed Matter Theory (CMT)
  Abstract An experimental determination of the mean vortex velocity in superconductors mostly relies on the measurement of flux-flow resistance with magnetic field, temperature, or driving current. In the present work we introduce a method combining conventional transport measurements and a frequency-tuned flashing pinning potential to obtain reliable estimates of the vortex velocity. The proposed device is characterized using the time-dependent Ginzburg-Landau formalism, where the velocimetry method exploits the resonances in mean vortex dissipation when temporal commensuration occurs between the vortex crossings and the flashing potential. We discuss the sensitivity of the proposed technique on applied current, temperature and heat diffusion, as well as the vortex core deformations during fast motion.
  Address
  Corporate Author Thesis
  Publisher Nature Publishing Group Place of Publication London Editor
  Language Wos 000385919600001 Publication Date 2016-10-24
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 2045-2322 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 4.259 Times cited 22 Open Access
  Notes ; This work was supported by the Research Foundation-Flanders (FWO) and EU COST action MP1201. The work of Z.L.J. and A.V.S. was partially supported by “Mandat d'Impulsion Scientifique” MIS F.4527.13 of the F.R.S.-FNRS. ; Approved Most recent IF: 4.259
  Call Number UA @ lucian @ c:irua:144636 Serial 4701
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Author (down) Jehanathan, N.; Georgieva, V.; Saraiva, M.; Depla, D.; Bogaerts, A.; Van Tendeloo, G.
  Title The influence of Cr and Y on the micro structural evolution of Mg―Cr―O and Mg―Y―O thin films Type A1 Journal article
  Year 2011 Publication Thin solid films : an international journal on the science and technology of thin and thick films Abbreviated Journal Thin Solid Films
  Volume 519 Issue 16 Pages 5388-5396
  Keywords A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT); Electron microscopy for materials research (EMAT)
  Abstract The compositional influence of Cr and Y on the microstructure of Mg―Cr―O, and Mg―Y―O films synthesized by reactive magnetron sputtering has been investigated by transmission electron microscopy, X-ray diffraction and molecular dynamics simulations. A decrease in crystallinity is observed in these films as the M (Cr or Y) content is increased. It is found that M forms a solid solution with MgO for metal ratios up to ~ 70% and ~ 50% for Cr and Y respectively. Above ~ 70% Cr metal ratio the Mg―Cr―O films are found to be completely amorphous. The Mg―Y―O films are composed of Mg(Y)O and Y2O3 nano crystallites, up to ~ 50% Y metal ratio. Above this ratio, only Y2O3 nano crystallites are found. The preferential < 111> MgO grain alignment is strongly affected by the increase in M content. For M metal ratios up to ~ 50%, there is a selective promotion of the < 100> MgO grain alignments and a decline in the < 111> grain alignments.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Lausanne Editor
  Language Wos 000292573500013 Publication Date 2011-02-26
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 0040-6090; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 1.879 Times cited 4 Open Access
  Notes Iwt Approved Most recent IF: 1.879; 2011 IF: 1.890
  Call Number UA @ lucian @ c:irua:89516 Serial 1618
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Author (down) Javon, E.; Lubk; Cours, R.; Reboh, S.; Cherkashin, N.; Houdellier, F.; Gatel, C.; Hytch, M.J.
  Title Dynamical effects in strain measurements by dark-field electron holography Type A1 Journal article
  Year 2014 Publication Ultramicroscopy Abbreviated Journal Ultramicroscopy
  Volume 147 Issue Pages 70-85
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract Here, we study the effect of dynamic scattering on the projected geometric phase and strain maps reconstructed using dark-field electron holography (DFEH) for non-uniformly strained crystals. The investigated structure consists of a {SiGe/Si} superlattice grown on a (001)-Si substrate. The three dimensional strain held within the thin TEM lamella is modelled by the finite element method. The observed projected strain is simulated in two ways by multiplying the strain at each depth in the crystal by a weighting function determined from a recently developed analytical two-beam dynamical theory, and by simply taking the average value. We demonstrate that the experimental results need to be understood in terms of the dynamical theory and good agreement is found between the experimental and simulated results. Discrepancies do remain for certain cases and are likely to be from an imprecision in the actual two-beam diffraction conditions, notably the deviation parameter, and points to limitations in the 2-beam approximation. Finally, a route towards a 3D reconstruction of strain fields is proposed. (C) 2014 Elsevier B.V. All rights reserved.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Amsterdam Editor
  Language Wos 000343157400009 Publication Date 2014-07-02
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 0304-3991; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 2.843 Times cited 10 Open Access
  Notes Approved Most recent IF: 2.843; 2014 IF: 2.436
  Call Number UA @ lucian @ c:irua:121108 Serial 769
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Author (down) Javon, E.; Gaceur, M.; Dachraoui, W.; Margeat, O.; Ackermann, J.; Ilenia Saba, M.; Delugas, P.; Mattoni, A.; Bals, S.; Van Tendeloo, G.
  Title Competing forces in the self-assembly of coupled ZnO nanopyramids Type A1 Journal article
  Year 2015 Publication ACS nano Abbreviated Journal Acs Nano
  Volume 9 Issue 9 Pages 3685-3694
  Keywords A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
  Abstract Self-assembly (SA) of nanostructures has recently gained increasing interest. A clear understanding of the process is not straightforward since SA of nanoparticles is a complex multiscale phenomenon including different driving forces. Here, we study the SA between aluminum doped ZnO nanopyramids into couples by combining inorganic chemistry and advanced electron microscopy techniques with atomistic simulations. Our results show that the SA of the coupled nanopyramids is controlled first by morphology, as coupling only occurs in the case of pyramids with well-developed facets of the basal planes. The combination of electron microscopy and atomistic modeling reveals that the coupling is further driven by strong ligandligand interaction between the bases of the pyramids as dominant force, while screening effects due to Al doping or solvent as well as corecore interaction are only minor contributions. Our combined approach provides a deeper understanding of the complex interplay between the interactions at work in the coupled SA of ZnO nanopyramids.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000353867000030 Publication Date 2015-03-12
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 1936-0851;1936-086X; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 13.942 Times cited 21 Open Access OpenAccess
  Notes Esmi; 335078 Colouratom; ECAS_Sara; (ROMEO:white; preprint:; postprint:restricted 12 months embargo; pdfversion:cannot); Approved Most recent IF: 13.942; 2015 IF: 12.881
  Call Number c:irua:125978 Serial 434
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Author (down) Javdani, Z.; Hassani, N.; Faraji, F.; Zhou, R.; Sun, C.; Radha, B.; Neyts, E.; Peeters, F.M.; Neek-Amal, M.
  Title Clogging and unclogging of hydrocarbon-contaminated nanochannels Type A1 Journal article
  Year 2022 Publication The journal of physical chemistry letters Abbreviated Journal J Phys Chem Lett
  Volume 13 Issue 49 Pages 11454-11463
  Keywords A1 Journal article; Engineering sciences. Technology; Condensed Matter Theory (CMT); Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
  Abstract The recent advantages of the fabrication of artificial nanochannels enabled new research on the molecular transport, permeance, and selectivity of various gases and molecules. However, the physisorption/chemisorption of the unwanted molecules (usually hydrocarbons) inside nanochannels results in the alteration of the functionality of the nanochannels. We investigated contamination due to hydrocarbon molecules, nanochannels made of graphene, hexagonal boron nitride, BC2N, and molybdenum disulfide using molecular dynamics simulations. We found that for a certain size of nanochannel (i.e., h = 0.7 nm), as a result of the anomalous hydrophilic nature of nanochannels made of graphene, the hydrocarbons are fully adsorbed in the nanochannel, giving rise to full uptake. An increasing temperature plays an important role in unclogging, while pressure does not have a significant role. The results of our pioneering work contribute to a better understanding and highlight the important factors in alleviating the contamination and unclogging of nanochannels, which are in good agreement with the results of recent experiments.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000893147700001 Publication Date 2022-12-05
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 1948-7185 ISBN Additional Links UA library record; WoS full record
  Impact Factor 5.7 Times cited Open Access OpenAccess
  Notes Approved Most recent IF: 5.7
  Call Number UA @ admin @ c:irua:192815 Serial 7263
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Author (down) Jardali, F.; Van Alphen, S.; Creel, J.; Ahmadi Eshtehardi, H.; Axelsson, M.; Ingels, R.; Snyders, R.; Bogaerts, A.
  Title NOxproduction in a rotating gliding arc plasma: potential avenue for sustainable nitrogen fixation Type A1 Journal article
  Year 2021 Publication Green Chemistry Abbreviated Journal Green Chem
  Volume 23 Issue 4 Pages 1748-1757
  Keywords A1 Journal article; Engineering sciences. Technology; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
  Abstract The fast growing world population demands food to survive, and nitrogen-based fertilizers are essential to ensure sufficient food production. Today, fertilizers are mainly produced from non-sustainable fossil fuels<italic>via</italic>the Haber–Bosch process, leading to serious environmental problems. We propose here a novel rotating gliding arc plasma, operating in air, for direct NO<sub>x</sub>production, which can yield high nitrogen content organic fertilizers without pollution associated with ammonia emission. We explored the efficiency of NO<sub>x</sub>production in a wide range of feed gas ratios, and for two arc modes: rotating and steady. When the arc is in steady mode, record-value NO<sub>x</sub>concentrations up to 5.5% are achieved which are 1.7 times higher than the maximum concentration obtained by the rotating arc mode, and with an energy consumption of 2.5 MJ mol<sup>−1</sup>(or<italic>ca.</italic>50 kW h kN<sup>−1</sup>);<italic>i.e.</italic>the lowest value so far achieved by atmospheric pressure plasma reactors. Computer modelling, using a combination of five different complementary approaches, provides a comprehensive picture of NO<sub>x</sub>formation in both arc modes; in particular, the higher NO<sub>x</sub>production in the steady arc mode is due to the combined thermal and vibrationally-promoted Zeldovich mechanisms.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000629630600021 Publication Date 2021-01-28
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 1463-9262 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 9.125 Times cited Open Access OpenAccess
  Notes Fonds Wetenschappelijk Onderzoek, GoF9618n 30505023 ; H2020 European Research Council, 810182 ; This research was supported by a Bilateral Project with N2 Applied, the Excellence of Science FWO-FNRS project (FWO grant ID GoF9618n, EOS ID 30505023) and by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement no 810182 – SCOPE ERC Synergy project). The calculations were performed using the Turing HPC infrastructure at the CalcUA core facility of the Universiteit Antwerpen (UAntwerpen), a division of the Flemish Supercomputer Center VSC, funded by the Hercules Foundation, the Flemish Government (department EWI) and the UAntwerpen. We also thank J.-L. Liu for the RGA design, L. Van ‘t dack and K. Leyssens for MS calibration and practical support, and K. Van ‘t Veer for the fruitful discussions on plasma kinetic modelling and for calculating the electron energy losses. Approved Most recent IF: 9.125
  Call Number PLASMANT @ plasmant @c:irua:176022 Serial 6678
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Author (down) Jany, B.R.; Gauquelin, N.; Willhammar, T.; Nikiel, M.; van den Bos, K.H.W.; Janas, A.; Szajna, K.; Verbeeck, J.; Van Aert, S.; Van Tendeloo, G.; Krok, F.
  Title Controlled growth of hexagonal gold nanostructures during thermally induced self-assembling on Ge(001) surface Type A1 Journal article
  Year 2017 Publication Scientific reports Abbreviated Journal Sci Rep-Uk
  Volume 7 Issue 7 Pages 42420
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract Nano-sized gold has become an important material in various fields of science and technology, where control over the size and crystallography is desired to tailor the functionality. Gold crystallizes in the face-centered cubic (fcc) phase, and its hexagonal closed packed (hcp) structure is a very unusual and rare phase. Stable Au hcp phase has been reported to form in nanoparticles at the tips of some Ge nanowires. It has also recently been synthesized in the form of thin graphene-supported sheets which are unstable under electron beam irradiation. Here, we show that stable hcp Au 3D nanostructures with well-defined crystallographic orientation and size can be systematically created in a process of thermally induced self-assembly of thin Au layer on Ge(001) monocrystal. The Au hcp crystallite is present in each Au nanostructure and has been characterized by different electron microscopy techniques. We report that a careful heat treatment above the eutectic melting temperature and a controlled cooling is required to form the hcp phase of Au on a Ge single crystal. This new method gives scientific prospects to obtain stable Au hcp phase for future applications in a rather simple manner as well as redefine the phase diagram of Gold with Germanium.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000393940700001 Publication Date 2017-02-14
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 2045-2322 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 4.259 Times cited 25 Open Access OpenAccess
  Notes The authors gratefully acknowledge the financial support from the Polish National Science Center, grant no. DEC-2012/07/B/ST5/00906. N.G., G.V.T. and J.V. acknowledge the European Union (EU) Council under the 7th Framework Program (FP7) ERC Starting Grant 278510 VORTEX for support. The Research Foundation Flanders is acknowledged through project fundings (G.0374.13N, G.0368.15N, G.0369.15N) and for a Ph.D. research grant to K.H.W.v.d.B. The microscope was partly funded by the Hercules Fund from the Flemish Government. T.W. acknowledges the Swedish Research Council for an international postdoc grant. The research leading to these results has received funding from the European Union Seventh Framework Programme under Grant Agreement 312483–ESTEEM2 (Integrated Infrastructure Initiative–I3). Part of the research was carried out with equipment purchased with financial support from the European Regional Development Fund in the framework of the Polish Innovation Economy Operational Program (Contract No. POIG.02.01.00-12-023/08). Approved Most recent IF: 4.259
  Call Number EMAT @ emat @ c:irua:140846UA @ admin @ c:irua:140846 Serial 4423
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Author (down) Janssens, K.L.; Peeters, F.M.; Schweigert, V.A.; Partoens, B.
  Title Magnetic field dependence of the xciton energy in type I and type II quantum disks Type A1 Journal article
  Year 2001 Publication Physica: B : condensed matter Abbreviated Journal Physica B
  Volume 298 Issue Pages 277-281
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Amsterdam Editor
  Language Wos 000168992800057 Publication Date 2002-07-25
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 0921-4526; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 1.386 Times cited 4 Open Access
  Notes Approved Most recent IF: 1.386; 2001 IF: 0.663
  Call Number UA @ lucian @ c:irua:34351 Serial 1873
Permanent link to this record
 

 
Author (down) Janssens, K.L.; Peeters, F.M.; Schweigert, V.A.
  Title Magnetic field dependence of the exciton energy in a quantum disk Type A1 Journal article
  Year 2001 Publication Physical review : B : condensed matter and materials physics Abbreviated Journal Phys Rev B
  Volume 63 Issue Pages 205311
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Lancaster, Pa Editor
  Language Wos 000168937200058 Publication Date 2002-07-27
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 0163-1829;1095-3795; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 3.836 Times cited 81 Open Access
  Notes Approved Most recent IF: 3.836; 2001 IF: NA
  Call Number UA @ lucian @ c:irua:37291 Serial 1869
Permanent link to this record
 

 
Author (down) Janssens, K.L.; Peeters, F.M.; Schweigert, V.A.
  Title Magnetic field dependence of the properties of excitons confined in a quantum disk Type A1 Journal article
  Year 2001 Publication Physica status solidi: B: basic research Abbreviated Journal Phys Status Solidi B
  Volume 224 Issue Pages 763-768
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Berlin Editor
  Language Wos 000168432100030 Publication Date 2004-11-23
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 0370-1972;1521-3951; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 1.674 Times cited 1 Open Access
  Notes Approved Most recent IF: 1.674; 2001 IF: 0.873
  Call Number UA @ lucian @ c:irua:37311 Serial 1872
Permanent link to this record
 

 
Author (down) Janssens, K.L.; Peeters, F.M.
  Title Monte-Carlo simulation of the coherent backscattering of electrons in a ballistic system Type A1 Journal article
  Year 1999 Publication Superlattices and microstructures Abbreviated Journal Superlattice Microst
  Volume 25 Issue Pages 615-621
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication London Editor
  Language Wos 000080373600007 Publication Date 2002-10-07
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 0749-6036; ISBN Additional Links UA library record; WoS full record
  Impact Factor 2.123 Times cited Open Access
  Notes Approved Most recent IF: 2.123; 1999 IF: 0.649
  Call Number UA @ lucian @ c:irua:24169 Serial 2199
Permanent link to this record
 

 
Author (down) Janssens, K.L.; Partoens, B.; Peeters, F.M.
  Title Effect of strain on the magnetoexciton ground state in InP/GaxIn1-xP quantum disks Type A1 Journal article
  Year 2003 Publication Physical review : B : condensed matter and materials physics Abbreviated Journal Phys Rev B
  Volume 67 Issue 23 Pages 235325,1-8
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Lancaster, Pa Editor
  Language Wos 000184040700063 Publication Date 2003-06-27
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 0163-1829;1095-3795; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 3.836 Times cited 23 Open Access
  Notes Approved Most recent IF: 3.836; 2003 IF: NA
  Call Number UA @ lucian @ c:irua:62432 Serial 837
Permanent link to this record
 

 
Author (down) Janssens, K.L.; Partoens, B.; Peeters, F.M.
  Title Influence of strain on the magneto-exciton in single and coupled InP/GaInP quantum disks Type A1 Journal article
  Year 2004 Publication Physica. E: Low-dimensional systems and nanostructures Abbreviated Journal Physica E
  Volume 21 Issue 2/4 Pages 349-353
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher North-Holland Place of Publication Amsterdam Editor
  Language Wos 000220873300041 Publication Date 2004-02-05
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 1386-9477; ISBN Additional Links UA library record; WoS full record
  Impact Factor 2.221 Times cited Open Access
  Notes Approved Most recent IF: 2.221; 2004 IF: 0.898
  Call Number UA @ lucian @ c:irua:62428 Serial 1635
Permanent link to this record
 

 
Author (down) Janssens, K.L.; Partoens, B.; Peeters, F.M.
  Title Magneto-exciton in single and coupled type II quantum dots Type A1 Journal article
  Year 2002 Publication Physica status solidi: A: applied research Abbreviated Journal Phys Status Solidi A
  Volume 190 Issue 2 Pages 571-576
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Berlin Editor
  Language Wos 000175623200048 Publication Date 2002-08-25
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 0031-8965;1521-396X; 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:62426 Serial 1899
Permanent link to this record
 

 
Author (down) Janssens, K.L.; Partoens, B.; Peeters, F.M.
  Title Magneto-excitons in planar type II quantum dots Type A1 Journal article
  Year 2001 Publication Physical review : B : condensed matter and materials physics Abbreviated Journal Phys Rev B
  Volume 64 Issue 15 Pages
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract We study an exciton in a type-II quantum dot, where the electron is confined in the dot, but the hole is located in the barrier material. The exciton properties are studied as a function of a perpendicular magnetic field using a Hartree-Fock mesh calculation. Our model system consists of a planar quantum disk. Angular momentum (l) transitions are predicted with increasing magnetic field. We, also study the transition from a type-I to a type-H quantum dot which is induced by changing the confinement potential of the hole. For sufficiently large magnetic fields a reentrant behavior is found from l(h) = 0 to l(h) not equal 0 and back to l(h) = 0, which results in a transition from type II to type I.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Lancaster, Pa Editor
  Language Wos 000171694600068 Publication Date 2002-07-27
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 0163-1829;1095-3795; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 3.836 Times cited 56 Open Access
  Notes Approved Most recent IF: 3.836; 2001 IF: NA
  Call Number UA @ lucian @ c:irua:37281 Serial 1900
Permanent link to this record
 

 
Author (down) Janssens, K.L.; Partoens, B.; Peeters, F.M.
  Title Magnetoexciton in vertically coupled InP/GaInP quantum disks: effect of strain on the exciton ground state Type A1 Journal article
  Year 2004 Publication Physical review : B : condensed matter and materials physics Abbreviated Journal Phys Rev B
  Volume 69 Issue Pages 235320,1-7
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Lancaster, Pa Editor
  Language Wos 000222531400073 Publication Date 2004-06-25
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 1098-0121;1550-235X; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 3.836 Times cited 9 Open Access
  Notes Approved Most recent IF: 3.836; 2004 IF: 3.075
  Call Number UA @ lucian @ c:irua:62434 Serial 1917
Permanent link to this record
 

 
Author (down) Janssens, K.L.; Partoens, B.; Peeters, F.M.
  Title Single and coupled type II quantum dots in magnetic and electric fields Type A1 Journal article
  Year 2002 Publication Physicalia magazine Abbreviated Journal
  Volume 24 Issue Pages 211
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Gent Editor
  Language Wos Publication Date 0000-00-00
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 0770-0520 ISBN Additional Links UA library record
  Impact Factor Times cited Open Access
  Notes Approved Most recent IF: NA
  Call Number UA @ lucian @ c:irua:62456 Serial 3016
Permanent link to this record
 

 
Author (down) Janssens, K.L.; Partoens, B.; Peeters, F.M.
  Title Single and vertically coupled type-II quantum dots in a perpendicular magnetic field: exciton ground-state properties Type A1 Journal article
  Year 2002 Publication Physical review : B : condensed matter and materials physics Abbreviated Journal Phys Rev B
  Volume 66 Issue 7 Pages 075314,1-9
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Lancaster, Pa Editor
  Language Wos 000177969800106 Publication Date 2002-10-01
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 0163-1829;1095-3795; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 3.836 Times cited 38 Open Access
  Notes Approved Most recent IF: 3.836; 2002 IF: NA
  Call Number UA @ lucian @ c:irua:62430 Serial 3017
Permanent link to this record
 

 
Author (down) Janssens, K.L.; Partoens, B.; Peeters, F.M.
  Title Stark shift in single and vertically coupled type-I and type-II quantum dots Type A1 Journal article
  Year 2002 Publication Physical review : B : condensed matter and materials physics Abbreviated Journal Phys Rev B
  Volume 65 Issue 23 Pages 233301,1-4
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Lancaster, Pa Editor
  Language Wos 000176767900018 Publication Date 2002-07-27
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 0163-1829;1095-3795; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 3.836 Times cited 43 Open Access
  Notes Approved Most recent IF: 3.836; 2002 IF: NA
  Call Number UA @ lucian @ c:irua:62431 Serial 3150
Permanent link to this record
 

 
Author (down) Janssens, K.L.; Partoens, B.; Peeters, F.M.
  Title Type II quantum dots in magnetic fields: excitonic behaviour Type A1 Journal article
  Year 2003 Publication Microelectronics journal Abbreviated Journal Microelectron J
  Volume 34 Issue Pages 347-350
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Luton Editor
  Language Wos 000183607400007 Publication Date 2003-04-23
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 0026-2692; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 1.163 Times cited 1 Open Access
  Notes Approved Most recent IF: 1.163; 2003 IF: 0.565
  Call Number UA @ lucian @ c:irua:62450 Serial 3790
Permanent link to this record
 

 
Author (down) Janssens, K.H.; Adams, F.C.; van Langevelde, F.; Vis, R.D.; Jones, K.W.; Rivers, M.; Sutton, S.
  Title Comparison of synchrotron X-ray microanalysis with electron and proton microscopy for individual particle analysis Type A3 Journal article
  Year 1992 Publication Advances in X-ray analysis Abbreviated Journal
  Volume 35 Issue Pages 1265-1273
  Keywords A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos Publication Date
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 0376-0308 ISBN Additional Links UA library record
  Impact Factor Times cited Open Access
  Notes Approved no
  Call Number UA @ admin @ c:irua:2811 Serial 5530
Permanent link to this record
 

 
Author (down) Janssens, K.; Vincze, L.; Vekemans, B.; Williams, C.T.; Radtke, M.; Haller, M.; Knöchel, A.
  Title The non-destructive determination of REE in fossilized bone using synchrotron radiation induced K-line X-ray microfluorescence analysis Type A1 Journal article
  Year 1999 Publication Fresenius' journal of analytical chemistry Abbreviated Journal
  Volume 363 Issue 4 Pages 413-420
  Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
  Abstract The sensitivity and applicability of the synchrotron radiation induced X-ray microfluorescence (mu-SRXRF) spectrometer at the Hamburg synchrotron laboratory Hasylab for the determination of the distribution of trace concentrations of rare-earth elements (REE) in fossilized bone are discussed and critically compared to those of other trace analytical methods such as instrumental neutron activation analysis (INAA) and LAMP-ICPMS (laser ablation microprobe inductively-coupled plasma mass spectrometry). Measurements were carried out on two bone samples from contrasting terrestrial depositional environments at Olduvai Gorge (Tanzania). Results indicate that the microdistribution of the REE in these biological materials is not homogeneous and that the relative abundance of these elements can provide information on the palaeoenvironment during the fossilization process. The heterogeneous distribution of the REE can be determined in a quantitative and completely non-destructive manner provided the concentrations of individual REE are above 10 mu g/g.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000078895300015 Publication Date 2002-08-25
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 0937-0633 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 @ admin @ c:irua:103505 Serial 5747
Permanent link to this record
 

 
Author (down) Janssens, K.; Vincze, L.; Vekemans, B.; Adams, F.; Haller, M.; Knöchel, A.
  Title The use of lead-glass capillaries for microfocusing of highly energetic (0-60 KeV) synchrotron radiation Type A1 Journal article
  Year 1998 Publication Journal of analytical atomic spectrometry Abbreviated Journal J Anal Atom Spectrom
  Volume 13 Issue 5 Pages 339-350
  Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000073808900004 Publication Date 2002-07-26
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 0267-9477 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 3.379 Times cited Open Access
  Notes Approved Most recent IF: 3.379; 1998 IF: 3.845
  Call Number UA @ admin @ c:irua:19321 Serial 5895
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