Records |
Author |
Vets, C. |
Title |
Growth properties of carbon nanomaterials : towards tuning for electronic applications |
Type |
Doctoral thesis |
Year |
2020 |
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Pages |
130 p. |
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Doctoral thesis; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
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Most recent IF: NA |
Call Number |
UA @ admin @ c:irua:164737 |
Serial |
6299 |
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Author |
Pourbabak, S. |
Title |
Influence of nano and microstructural features and defects in finegrained NiTi on the thermal and mechanical reversibility of the martensitic transformation |
Type |
Doctoral thesis |
Year |
2020 |
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Pages |
166 p. |
Keywords |
Doctoral thesis; Electron microscopy for materials research (EMAT) |
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Call Number |
UA @ admin @ c:irua:165919 |
Serial |
6305 |
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Author |
Lumbeeck, G. |
Title |
Mechanisms of nano-plasticity in as-deposited and hydrided nanocrystalline Pd and Ni thin films |
Type |
Doctoral thesis |
Year |
2019 |
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Pages |
130 p. |
Keywords |
Doctoral thesis; Electron microscopy for materials research (EMAT) |
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Most recent IF: NA |
Call Number |
UA @ admin @ c:irua:164918 |
Serial |
6309 |
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Author |
Anđelković, M. |
Title |
O(N) numerical methods for investigating graphene heterostructures and moiré patterns |
Type |
Doctoral thesis |
Year |
2019 |
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Issue |
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Pages |
207 p. |
Keywords |
Doctoral thesis; Condensed Matter Theory (CMT) |
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Most recent IF: NA |
Call Number |
UA @ admin @ c:irua:165205 |
Serial |
6315 |
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Author |
Chuon, S. |
Title |
Simulation numérique multi-échelles du procédé de dépôt par pulvérisation cathodique magnétron |
Type |
Doctoral thesis |
Year |
2019 |
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Pages |
137 p. |
Keywords |
Doctoral thesis; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
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Approved |
Most recent IF: NA |
Call Number |
UA @ admin @ c:irua:166091 |
Serial |
6322 |
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Author |
Vermeiren, V. |
Title |
Chemical kinetics modeling of non-equilibrium and thermal effects in vibrationally active CO2 plasmas |
Type |
Doctoral thesis |
Year |
2020 |
Publication |
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Pages |
207 p. |
Keywords |
Doctoral thesis; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
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Most recent IF: NA |
Call Number |
UA @ admin @ c:irua:173385 |
Serial |
6468 |
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Author |
Nematollahi, P. |
Title |
Density functional theory calculations for understanding gas conversion reactions on single metal atom embedded carbon-based nanocatalysts |
Type |
Doctoral thesis |
Year |
2020 |
Publication |
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Volume |
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Issue |
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Pages |
173 p. |
Keywords |
Doctoral thesis; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
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Approved |
Most recent IF: NA |
Call Number |
UA @ admin @ c:irua:169310 |
Serial |
6481 |
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Author |
De Jong, M. |
Title |
A highly accurate portable electrochemical sensor for cocaine : from methodology to testing in the field |
Type |
Doctoral thesis |
Year |
2020 |
Publication |
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Volume |
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Issue |
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Pages |
263 p. |
Keywords |
Doctoral thesis; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Approved |
Most recent IF: NA |
Call Number |
UA @ admin @ c:irua:170912 |
Serial |
6538 |
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Author |
Bafekry, A. |
Title |
Investigation of the effects of defects and impurities on nanostructures consisting of Group IV and V elements using First-principles calculations |
Type |
Doctoral thesis |
Year |
2020 |
Publication |
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Volume |
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Issue |
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Pages |
126 p. |
Keywords |
Doctoral thesis; Condensed Matter Theory (CMT) |
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Notes |
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Approved |
Most recent IF: NA |
Call Number |
UA @ admin @ c:irua:168738 |
Serial |
6554 |
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Author |
Conti, S. |
Title |
Multi-band superfluidity and BEC-BCS crossover in novel ultrathin materials |
Type |
Doctoral thesis |
Year |
2020 |
Publication |
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Issue |
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Pages |
123 p. |
Keywords |
Doctoral thesis; Sociology; History; Condensed Matter Theory (CMT) |
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Notes |
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Approved |
Most recent IF: NA |
Call Number |
UA @ admin @ c:irua:169036 |
Serial |
6565 |
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Author |
Gielis, J.; Caratelli, D.; Shi, P.; Ricci, P.E. |
Title |
A note on spirals and curvature |
Type |
A1 Journal article |
Year |
2020 |
Publication |
Growth and form |
Abbreviated Journal |
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Volume |
1 |
Issue |
1 |
Pages |
1-8 |
Keywords |
A1 Journal article; Sustainable Energy, Air and Water Technology (DuEL) |
Abstract |
Starting from logarithmic, sinusoidal and power spirals, it is shown how these spirals are connected directly with Chebyshev polynomials, Lamé curves, with allometry and Antonelli-metrics in Finsler geometry. Curvature is a crucial concept in geometry both for closed curves and equiangular spirals, and allowed Dillen to give a general definition of spirals. Many natural shapes can be described as a combination of one of two basic shapes in nature—circle and spiral—with Gielis transformations. Using this idea, shape description itself is used to develop a novel approach to anisotropic curvature in nature. Various examples are discussed, including fusion in flowers and its connection to the recently described pseudo-Chebyshev functions. |
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2020-02-23 |
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Notes |
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Approved |
Most recent IF: NA |
Call Number |
UA @ admin @ c:irua:167061 |
Serial |
6569 |
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Author |
Zhang, H. |
Title |
Optical diagnostics of spatiotemporal evolution characteristics of nanosecond laser-induced plasma in gases |
Type |
Doctoral thesis |
Year |
2020 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
117 p. |
Keywords |
Doctoral thesis; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
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Notes |
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Approved |
Most recent IF: NA |
Call Number |
UA @ admin @ c:irua:171436 |
Serial |
6572 |
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Author |
Heijkers, S. |
Title |
Plasma chemistry modelling for CO2 and CH4 conversion in various plasma types |
Type |
Doctoral thesis |
Year |
2020 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
316 p. |
Keywords |
Doctoral thesis; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
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Notes |
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Approved |
Most recent IF: NA |
Call Number |
UA @ admin @ c:irua:168055 |
Serial |
6582 |
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Author |
Eliaerts, J. |
Title |
Qualitative and quantitative determination of cocaine using mid-infrared spectroscopy and chemometrics |
Type |
Doctoral thesis |
Year |
2020 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
184 p. |
Keywords |
Doctoral thesis; Law; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Notes |
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Approved |
Most recent IF: NA |
Call Number |
UA @ admin @ c:irua:169398 |
Serial |
6589 |
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Author |
Vanherck, J. |
Title |
Spontaneous and induced magnetisation in two-dimensional and bulk Heisenberg ferromagnets : a quantum mechanical treatment |
Type |
Doctoral thesis |
Year |
2020 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
160 p. |
Keywords |
Doctoral thesis; Condensed Matter Theory (CMT) |
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Notes |
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Approved |
Most recent IF: NA |
Call Number |
UA @ admin @ c:irua:171875 |
Serial |
6612 |
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Author |
Hendrickx, M. |
Title |
Study of the effect of cation substitution on the local structure and the properties of perovskites and Li-ion battery cathode materials |
Type |
Doctoral thesis |
Year |
2020 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
208 p. |
Keywords |
Doctoral thesis; Electron microscopy for materials research (EMAT) |
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Notes |
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Approved |
Most recent IF: NA |
Call Number |
UA @ admin @ c:irua:173128 |
Serial |
6618 |
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Author |
Milagres de Oliveira, T. |
Title |
Three-dimensional characterisation of nanomaterials : from model-like systems to real nanostructures |
Type |
Doctoral thesis |
Year |
2020 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
230 p. |
Keywords |
Doctoral thesis; Electron microscopy for materials research (EMAT) |
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Notes |
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Approved |
Most recent IF: NA |
Call Number |
UA @ admin @ c:irua:170020 |
Serial |
6627 |
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Author |
Vanrompay, H. |
Title |
Toward fast and dose efficient electron tomography |
Type |
Doctoral thesis |
Year |
2020 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
207 p. |
Keywords |
Doctoral thesis; Electron microscopy for materials research (EMAT) |
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Notes |
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Approved |
Most recent IF: NA |
Call Number |
UA @ admin @ c:irua:169852 |
Serial |
6632 |
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Author |
Van Loon, J.; De Jong, M.; De Wael, K.; Du Bois, E. |
Title |
Transposing testing from lab to on-site environment : a case of cocaine powder sampling |
Type |
P3 Proceeding |
Year |
2020 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
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Keywords |
P3 Proceeding; Engineering sciences. Technology; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Product development |
Abstract |
This paper reports on the transition process to convert a specific lab technique to the on-site, real-life environment. Bringing a lab test to an on-site environment involves many difficulties regarding to the context, people skills and environmental support. Within this project, a case about sampling for an electrochemical measurement, was investigated as a basis to reason upon some general conclusions related to the process of transposing lab-tests to an on-site environment. The current lab test was analysed and compared with a focus group discussion with future users. Based on the findings, assumptions for the new sampling technique in the specific case were formulated. New low-tech methods to achieve the sampling were extensively tested and verified. Starting from this chosen case an argumentation was set up to generalise the conclusions, by reasoning on other cases of products that already passed this transition to the field. Based on a comparison, we could discuss that the selected parameters related to impact of the context environment, of the people that should handle the tests, related to the reasons for transposing the technology, and related to the technology that will be transposed to the on-site environment, were of importance of almost all cases and can therefore be considered as context-independent and related to the transfer to on-site testing. |
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ISBN |
978-94-6384-131-3 |
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Approved |
Most recent IF: NA |
Call Number |
UA @ admin @ c:irua:169896 |
Serial |
6637 |
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Author |
Rivera Julio, J. |
Title |
Cálculos ab initio de sistemas 2D y de baja dimensionalidad |
Type |
Doctoral thesis |
Year |
2021 |
Publication |
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Abbreviated Journal |
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Pages |
137 p. |
Keywords |
Doctoral thesis; Condensed Matter Theory (CMT) |
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Approved |
Most recent IF: NA |
Call Number |
UA @ admin @ c:irua:176996 |
Serial |
6718 |
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Author |
Ding, L.; Jidkova, S.; Greuter, M.J.W.; Van Herck, K.; Goossens, M.; Martens, P.; de Bock, G.H.; Van Hal, G. |
Title |
Coverage determinants of breast cancer screening in Flanders : an evaluation of the past decade |
Type |
A1 Journal article |
Year |
2020 |
Publication |
International journal for equity in health |
Abbreviated Journal |
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Volume |
19 |
Issue |
1 |
Pages |
212 |
Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT); Social Epidemiology & Health Policy (SEHPO) |
Abstract |
Background Breast cancer (BC) is the most common cancer in women in the developed world. In order to find developing cancers in an early stage, BC screening is commonly used. In Flanders, screening is performed in and outside an organized breast cancer screening program (BCSP). However, the determinants of BC screening coverage for both screening strategies are yet unknown. Objective To assess the determinants of BC screening coverage in Flanders. Methods Reimbursement data were used to attribute a screening status to each woman in the target population for the years 2008-2016. Yearly coverage data were categorized as screening inside or outside BCSP or no screening. Data were clustered by municipality level. A generalized linear equation model was used to assess the determinants of screening type. Results Over all years and municipalities, the median screening coverage rate inside and outside BCSP was 48.40% (IQR: 41.50-54.40%) and 14.10% (IQR: 9.80-19.80%) respectively. A higher coverage rate outside BSCP was statistically significantly (P < 0.001) associated with more crowded households (OR: 3.797, 95% CI: 3.199-4.508), younger age, higher population densities (OR: 2.528, 95% CI: 2.455-2.606), a lower proportion of unemployed job seekers (OR: 0.641, 95% CI: 0.624-0.658) and lower use of dental care (OR: 0.969, 95% CI: 0.967-0.972). Conclusion Coverage rate of BC screening is not optimal in Flanders. Women with low SES that are characterized by younger age, living in a high population density area, living in crowded households, or having low dental care are less likely to be screened for BC in Flanders. If screened, they are more likely to be screened outside the BCSP. |
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000595753100002 |
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2020-11-27 |
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Most recent IF: NA |
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UA @ admin @ c:irua:174374 |
Serial |
6721 |
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Sun, M.-H.; Zhou, J.; Hu, Z.-Y.; Chen, L.-H.; Li, L.-Y.; Wang, Y.-D.; Xie, Z.-K.; Turner, S.; Van Tendeloo, G.; Hasan, T.; Su, B.-L. |
Title |
Hierarchical zeolite single-crystal reactor for excellent catalytic efficiency |
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A1 Journal article |
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2020 |
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Matter |
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3 |
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4 |
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1226-1245 |
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A1 Journal article; Electron microscopy for materials research (EMAT) |
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As a size- and shape-selective catalyst, zeolites are widely used in petroleum and fine-chemicals processing. However, their small micropores severely hinder molecular diffusion and are sensitive to coke formation. Hierarchically porous zeolite single crystals with fully interconnected, ordered, and tunable multimodal porosity at macro-, meso-, and microlength scale, like in leaves, offer the ideal solution. However, their synthesis remains highly challenging. Here, we report a versatile confined zeolite crystallization process to achieve these superior properties. Such zeolite single crystals lead to significantly improved mass transport properties by shortening the diffusion length while maintaining shape-selective properties, endowing them with a high efficiency of zeolite crystals, enhanced catalytic activities and lifetime, highly reduced coke formation, and reduced deactivation rate in bulky-molecule reactions and methanol-to-olefins process. Their industrial utilization can lead to the design of innovative and intensified reactors and processes with highly enhanced efficiency and minimum energy consumption. |
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000581132600021 |
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2020-08-12 |
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UA @ admin @ c:irua:174329 |
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6727 |
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Li, C.-F.; Zhao, K.; Liao, X.; Hu, Z.-Y.; Zhang, L.; Zhao, Y.; Mu, S.; Li, Y.; Li, Y.; Van Tendeloo, G.; Sun, C. |
Title |
Interface cation migration kinetics induced oxygen release heterogeneity in layered lithium cathodes |
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A1 Journal article |
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2021 |
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Energy Storage Materials |
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36 |
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115-122 |
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A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) |
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The irreversible release of the lattice oxygen in layered cathodes is one of the major degradation mechanisms of lithium ion batteries, which accounts for a number of battery failures including the voltage/capacity fade, loss of cation ions and detachment of the primary particles, etc. Oxygen release is generally attributed to the stepwise thermodynamic controlled phase transitions from the layered to spinel and rock salt phases. Here, we report a strong kinetic effect from the mobility of cation ions, whose migration barrier can be significantly modulated by the phase epitaxy at the degrading interface. It ends up with a clear oxygen release heterogeneity and completely different reaction pathways between the thin and thick areas, as well as the interparticle valence boundaries, both of which widely exist in the mainstream cathode design with the secondary agglomerates. This work unveils the origin of the heterogenous oxygen release in the layered cathodes. It also sheds light on the rational design of cathode materials with enhanced oxygen stability by suppressing the cation migration. |
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000620584300009 |
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2020-12-24 |
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UA @ admin @ c:irua:176654 |
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6730 |
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Jafarzadeh, A. |
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First-principle studies of plasma-catalyst interactions for greenhouse gas conversion |
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Doctoral thesis |
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2020 |
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163 p. |
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Doctoral thesis; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
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UA @ admin @ c:irua:174073 |
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6765 |
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Ranjbar, S. |
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Mathematical model of plasma therapy on bacterial growth |
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Doctoral thesis |
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2020 |
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95 p. |
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Doctoral thesis; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
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UA @ admin @ c:irua:175471 |
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6768 |
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Uytdenhouwen, Y. |
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Tuning the performance of a DBD plasma reactor for CO2 reforming |
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Doctoral thesis |
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2020 |
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303 p. |
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Doctoral thesis; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
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UA @ admin @ c:irua:174026 |
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6774 |
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Skorikov, A. |
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Fast approaches for investigating 3D elemental distribution in nanomaterials |
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Doctoral thesis |
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2021 |
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143 p. |
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Doctoral thesis; Electron microscopy for materials research (EMAT) |
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UA @ admin @ c:irua:178855 |
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6795 |
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Pedrazo Tardajos, A. |
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Advanced graphene supports for 3D in situ transmission electron microscopy |
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Doctoral thesis |
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2021 |
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247 p. |
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Doctoral thesis; Electron microscopy for materials research (EMAT) |
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Transmission electron microscopy (TEM) is an ideal tool to investigate nanomaterials. The information from TEM experiments allows us to link the structure and composition of nanomaterials to their intrinsic physical properties. However, despite the significant evolution of the TEM field during the last two decades, major progress is still possible through the development of optimal TEM techniques and supports. The results presented in this thesis focus on the optimization of sample supports and their application. Among the different options, graphene has previously been reported as useful sample support for electron microscopy due to its unparalleled properties, for example, it is the thinnest known support and provides a protective effect to the sample under investigation. Unfortunately, commercial graphene grids show poor quality, in terms of intactness and cleanness, inhibiting their wide application within the field. Therefore, this thesis focuses on the application of optimized graphene TEM grids, obtained by transferring high quality graphene using an advanced procedure. This improvement on the transfer has enabled the visualization of materials with low contrast and high sensitivity towards the electron beam, such as surface ligands capping gold nanoparticles or metal halide perovskites. Furthermore, the implemented protocol is not only of interest for conventional TEM grids but also a major benefit for in situ TEM studies, where the sample is investigated in real time under certain stimuli. Hence, the same graphene transfer technology can be also applied to advanced in situ MEMS holders dedicated for both heating and gas experiments, where the thickness and insulating nature of the silicon nitride (Si3N4) support may hamper some applications. By engineering periodic arrays of holes in their Si3N4 membrane by focused ion beam, onto which the graphene is transferred, it has been possible to get proof-of-concept 3D in situ investigations of heat-induced morphological and compositional transformations of complex nanosystems. As an example, it has enabled the investigation of the possible phase-transition of metal halide perovskites upon heating using 2D and 3D structural characterization. Moreover, it has allowed the study of in situ three-dimensional nanoparticle dynamics during gas phase catalysis as well as the first steps that would lead towards the design and creation of the first Graphene Gas Cell. Consequently, implementation of the advanced graphene transfer technology described in this thesis is envisaged to impact a broad range of future experiments. |
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UA @ admin @ c:irua:181143 |
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6836 |
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Skorikov, A.; Heyvaert, W.; Albrecht, W.; Pelt, D.M.; Bals, S. |
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EMAT Simulated 3D Nanoparticle Structures Dataset |
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2021 |
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Dataset; Electron microscopy for materials research (EMAT) |
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This dataset contains 1000 simulated nanoparticle-like 3D structures and noisy EDX-like elemental maps based on them. These data are intended to be used for quantitative analysis of data processing methods in (EDX) tomography of nanoparticles and training the data-driven approaches for these tasks. The dataset is structured as follows: voxel_data/clean 3D voxel grid representation of the simulated nanoparticles. Voxel intensities are adjusted so that the total intensity equals 103. All 3D structures have unique identifiers in 0..999 range. The data derived from a 3D structure preserves this unique identifier. sinograms/clean Tilt series of projection images obtained from the corresponding 3D structures over an angular range of -75..75 degrees with a tilt step of 10 degrees to simulate a typical tilt series used in EDX tomography. Total intensity in each projection image equals 103. sinograms/noisy Tilt series of projection images corrupted with Poisson noise and an additional spatially uniform background noise. projections/clean Projection images extracted from the clean tilt series at 0 degrees tilt angle. projections/noisy Projection images extracted from the noisy tilt series at 0 degrees tilt angle. images/clean Visualizations of the clean projections as PNG images with the intensity range adjusted to 0..255 images/noisy Visualizations of the noisy projections as PNG images with the intensity range adjusted to 0..255 |
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UA @ admin @ c:irua:180615 |
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6838 |
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Du, K. |
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In situ TEM study on the manipulation of ferroelectrics |
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Doctoral thesis |
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2021 |
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91 p. |
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Doctoral thesis; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) |
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The strong correlated oxide systems attract a lot of attentions of scientists recently, the coexistence and interplay between various degrees of freedom, such as charge, spin and orbital, has been demonstrated to induce some fancy physical properties and phenomenon, including metal-insulator transition, high temperature superconductivity, colossal magnetoresistance. As a part of the strong correlated oxide systems, the ferroelectrics is abundant in both physical properties and application. First, if the electric dipole continuously rotating around a stable core then a topological structure is produced. If people could manipulate the topological structure and simultaneously observe the structure evolution, with external field applied on the topological structure, then it is very likely for such kind of ferroelectrics to be the next generation of storage, for it is reported to need low power input and produce high density of storage. In the other hand, in solids, charge polarity can one-to-one correspond to spin polarity phenomenologically, such as ferroelectricity and ferromagnetism, antiferroelectricity and antiferromagnetism, but ferrielectricity and ferrimagnetism kept telling a disparate story in microscopic level. The claimed “ferrielectrics” in existing research is equivalent to ferroelectric ones, thus the findings of such a real irreducible solids would complete the last piece of the ferroelectrics family. While solving the above two questions remain challengeable: the size of topological structure is small (typically below 10 nm), general characterization methods are insufficient for such high demand on space resolution, not to mention manipulating and observing its dynamic behavior at an atomic level. Here, employing the spherical aberration corrected electron microscope, we applied external field (heating and bias) on ferroelectrics. Combined with high-end characterization methods including the high-angle annular dark field (HAADF-STEM) image, Electron Energy Loss Spectroscopy (EELS) and integrated differential phase contrast (iDPC), the dynamic evolution of ferroelectrics are observed and analyzed. The main findings of this paper could be concluded as listed here: (1) PbTiO3(001)// SrTiO3(001) is grown on DyScO3 and SrRuO3 by pusled laser deposition, the atomical EDS mapping results reveal that the interface between PTO and STO is atomically sharp. Increasing the thickness of PTO from 1 uc to 21 uc, the topological structure wihtin PTO layer would transform from a/c domain to wave, vortex and finally flux closure domain. The geometric phase analysis results (GPA) reveal that above topological structures are corresponding to various strain. (2) Combined with in-situ biasing holder, the electric bias was applied on polar vortex, and it evolved from vortex (0 V) to polar wave (2 V) and finally polar down (5 V). EELS analysis was performed and we find that negative charge is gathered at vortex core, which turns the Ti4+ to Ti3+ there. The oxygen vacancy at negative polarization surface and the negative charge at the positive polarization surface realized the polarization screening of polar down domain. (3) Through the atomic inspection and analysis on lattice structure of BaFe2Se3, the near ladders within single unit are found to be different in degree of tetramerization, thus leading to a residual polarization along the a-axis. The further in-situ heating and biasing experiment was conducted on BaFe2Se3, and the strong and weak ladders are proved to be independent for their behavior under external field. This findings distinguishes ferrielectrics from ferroelectrics in solids. |
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UA @ admin @ c:irua:179310 |
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6842 |
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