| Records |
| Author |
Domingos, J.L.C. |
| Title |
Study of colloidal systems of anisotropic magnetic particles |
Type |
Doctoral thesis |
Year  |
2018 |
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Pages |
114 p. |
| Keywords |
Doctoral thesis; Condensed Matter Theory (CMT) |
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Approved |
Most recent IF: NA |
| Call Number |
UA @ admin @ c:irua:152284 |
Serial |
5232 |
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| Author |
Einhäupl, P.; Krook, J.; Svensson, N.; Van Acker, K.; Van Passel, S. |
| Title |
Enhanced landfill mining at the REMO site : assessing stakeholders' perspectives for implementation |
Type |
P3 Proceeding |
| Year |
2018 |
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P3 Proceeding; Engineering sciences. Technology; Engineering Management (ENM) |
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Proceedings of the 4th International Symposium on Enhanced Landfill Mining, February 5-6, 2018, Mechelen, Belgium / Jones, Peter Tom [edit.]; Machiels, Lieven [edit.] |
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978-90-828259-0-9 |
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Approved |
Most recent IF: NA |
| Call Number |
UA @ admin @ c:irua:161512 |
Serial |
6194 |
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| Author |
Gielis, J.; Caratelli, D.; de Jong van Coevorden, M.; Ricci, P.E. |
| Title |
The common descent of biological shape description and special functions |
Type |
H1 Book chapter |
| Year |
2018 |
Publication |
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Abbreviated Journal |
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| Volume |
230 |
Issue |
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Pages |
119-131
T2 - Differential and difference equations |
| Keywords |
H1 Book chapter; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
| Abstract |
Gielis transformations, with their origin in botany, are used to define square waves and trigonometric functions of higher order. They are rewritten in terms of Chebyshev polynomials. The origin of both, a uniform descriptor and the origin of orthogonal polynomials, can be traced back to a letter of Guido Grandi to Leibniz in 1713 on the mathematical description of the shape of flowers. In this way geometrical description and analytical tools are seamlessly combined. |
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000451375900010 |
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2018-05-08 |
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978-3-319-75646-2; 2194-1009; 978-3-319-75647-9; 978-3-319-75646-2 |
Additional Links |
UA library record; WoS full record; WoS citing articles |
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no |
| Call Number |
UA @ admin @ c:irua:150949 |
Serial |
7685 |
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| Author |
Grubova, I.Y. |
| Title |
Density functional theory study of interface interactions in hydroxyapatite/rutile composites for biomedical applications |
Type |
Doctoral thesis |
| Year |
2018 |
Publication |
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Pages |
251 p. |
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Doctoral thesis; Engineering sciences. Technology; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:158087 |
Serial |
7760 |
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| Author |
Rahemi, V. |
| Title |
Electrosensing applications by using titania as a support for bio(inspired) molecules |
Type |
Doctoral thesis |
| Year |
2018 |
Publication |
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Abbreviated Journal |
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Issue |
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Pages |
133 p. |
| Keywords |
Doctoral thesis; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:152884 |
Serial |
7877 |
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| Author |
Stosic, D. |
| Title |
High-performance Ginzburg-Landau simulations of superconductivity |
Type |
Doctoral thesis |
| Year |
2018 |
Publication |
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Abbreviated Journal |
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Issue |
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Pages |
166 p. |
| Keywords |
Doctoral thesis; Condensed Matter Theory (CMT) |
| Abstract |
Superconductivity is one of the most important discoveries of the last century. With many applications in physics, engineering, and technology, superconductors are crucial to our way of living. Several material and engineering issues however prevent their widespread usage in everyday life. Comprehensive studies are being directed at these materials and their properties to come up with new technologies that will address these challenges and enhance their superconductive capabilities. In this context, numerical modeling plays an important role in the search of new solutions to existing material and engineering issues. The time-dependent Ginzburg-Landau (TDGL) theory is a powerful predictive tool for modeling the macroscopic behavior of superconductors. However most of the numerical algorithms developed so far are incapable of describing many basic properties of real superconducting devices, and are too slow on current hardware for large-scale numerical simulations necessary for their accurate description. Therefore, the purpose of this thesis is to develop high-performing numerical solutions that can correctly describe material features to be used as modeling tools of laboratory experiments. Some important innovations introduced in this work include the numerical modeling of nonrectangular geometrical shapes with complex electrical and insulating components, the inclusion of dynamic heating of the material, and the description of different types of material inhomogeneities. These encompass the principal features necessary for a complete description of the superconductive physics in real material samples. In this thesis a numerical solution is developed for modeling superconducting thin films and used to study the superconductive properties of three experimental configurations: the dynamics of vortex matter in a Corbino disk, the motion of ultrafast vortices in an hourglass-shaped microbridge, and the photon detection process in a meander-patterned nanowire. Moreover, a numerical solution is developed for modeling three-dimensional superconductors which are studied here for the first time in the type-I superconducting regime. These numerical algorithms are optimized to exploit the computational horsepower of graphics processing units (GPUs) and multicore central-processing unit (CPU) clusters such that they can achieve high-performance and be used to model large-scale problems previously impossible on conventional machines. Several computational tools are also designed to assist with the modeling of superconducting devices. These include a numerical library of the TDGL equations, a novel mechanism for the generation of complex geometries, a closed-form solver to conduct numerical simulations, and a graphics user interface (GUI) to visualize the dynamic behavior of superconductors. The contributions in this thesis ultimately push the boundaries on what is possible in state-of-the-art numerical modeling of superconductivity. |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:181141 |
Serial |
8034 |
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| Author |
Samaee, V. |
| Title |
In-situ transmission electron microscopic nanomechanical investigations of Ni |
Type |
Doctoral thesis |
| Year |
2018 |
Publication |
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Abbreviated Journal |
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Issue |
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Pages |
172 p. |
| Keywords |
Doctoral thesis; Electron microscopy for materials research (EMAT) |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:156143 |
Serial |
8075 |
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| Author |
Stosic, D. |
| Title |
Numerical simulations of magnetic skyrmions in atomically-thin ferromagnetic films |
Type |
Doctoral thesis |
| Year |
2018 |
Publication |
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Abbreviated Journal |
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Issue |
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Pages |
153 p. |
| Keywords |
Doctoral thesis; Condensed Matter Theory (CMT) |
| Abstract |
Moore’s Law has driven the electronics industry for the past half century. However, the doubling of transistors about every two years is beginning to break down, owing to fundamental limits that arise as they approach the atomic length. As a result, the search for new pathways for electronics has become crucial. Among potential candidates, the discovery of magnetic textures known as skyrmions has attracted considerable interest and attention in spintronic technology, which relies on both the electron charge and its spin. The unusual topological and particle-like behavior launched skyrmions into the spotlight of scientific research. Topological protected stability, nanoscale size, and low driving currents needed to move them make skyrmions promising candidates for future consumer nanoelectronics. Recent advances in the field have provided all of the basic functions needed for carrying and processing information. In this thesis, we procure to advance the current understanding of skyrmion physics, and explore their potential to replace conventional electronics technology. First, the fundamental properties and lifetimes of racetrack skyrmions at room temperature are investigated. We discover that skyrmions can easily collapse at the boundary in laterally finite systems, and propose ways to improve their stability for constrained geometries. Then, pinning of single skyrmions on atomic defects of distinct origins are studied. We reveal that the preferred pinning positions depend on the skyrmion size and type of defect being considered, and discuss applications where control of skyrmions by defects is of particular interest. Next, we explore other magnetic configurations that can compete with skyrmions when considering new materials, and describe a previously unseen mechanism for collapse of skyrmions into cycloidal spin backgrounds. Finally, switching and interactions between skyrmions with distinct topologies are reported. We find that skyrmions transition to higher or lower topologies by absorbing a unit spin texture. The interactions between skyrmions of different topological charges can be attractive or repulsive, leading to the formation of arranged clusters. We conclude with a numerical library for simulating magnetic skyrmions in various scenarios. |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:181142 |
Serial |
8322 |
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| Author |
Asapu, R. |
| Title |
A study of plasmonic systems using Layer-by-Layer synthesized core-shell nanoparticles |
Type |
Doctoral thesis |
| Year |
2018 |
Publication |
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Abbreviated Journal |
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Issue |
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Pages |
142 p. |
| Keywords |
Doctoral thesis; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:153373 |
Serial |
8603 |
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| Author |
Li, L. |
| Title |
First-principles studies of novel two-dimensional dirac materials |
Type |
Doctoral thesis |
| Year |
2019 |
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Pages |
152 p. |
| Keywords |
Doctoral thesis; Engineering sciences. Technology; Condensed Matter Theory (CMT) |
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Approved |
Most recent IF: NA |
| Call Number |
UA @ admin @ c:irua:160527 |
Serial |
5214 |
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| Author |
Ghorbanfekr Kalashami, H. |
| Title |
Graphene-based membranes and nanoconfined water : molecular dynamics simulation study |
Type |
Doctoral thesis |
| Year |
2019 |
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Pages |
243 p. |
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Doctoral thesis; Condensed Matter Theory (CMT); 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:160548 |
Serial |
5216 |
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| Author |
Razzokov, J. |
| Title |
Molecular level simulations for plasma medicine applications |
Type |
Doctoral thesis |
| Year |
2019 |
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Issue |
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Pages |
173 p. |
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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:159654 |
Serial |
5277 |
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| Author |
Michielsen, I. |
| Title |
Plasma catalysis : study of packing materials on CO2 reforming in a DBD reactor |
Type |
Doctoral thesis |
| Year |
2019 |
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215 p. |
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Doctoral thesis; Laboratory of adsorption and catalysis (LADCA); Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
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Most recent IF: NA |
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UA @ admin @ c:irua:160087 |
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5278 |
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| Author |
Ramakers, M. |
| Title |
Using a gliding arc plasmatron for CO2 conversion : the future in industry? |
Type |
Doctoral thesis |
| Year |
2019 |
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Pages |
235 p. |
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Doctoral thesis; Engineering sciences. Technology; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
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Most recent IF: NA |
| Call Number |
UA @ admin @ c:irua:158254 |
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5282 |
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| Author |
Cautaerts, N. |
| Title |
Nanoscale study of ageing and irradiation induced precipitates in the DIN 1.4970 alloy |
Type |
Doctoral thesis |
| Year |
2019 |
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306 p. |
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Doctoral thesis; Electron microscopy for materials research (EMAT) |
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Most recent IF: NA |
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UA @ admin @ c:irua:161997 |
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5392 |
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| Author |
Fatermans, J. |
| Title |
Quantitative atom detection from atomic-resolution transmission electron microscopy images |
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Doctoral thesis |
| Year |
2019 |
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155 p. |
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Doctoral thesis; Electron microscopy for materials research (EMAT) |
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Most recent IF: NA |
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UA @ admin @ c:irua:162101 |
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5394 |
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Van der Donck, M. |
| Title |
Excitonic complexes in transition metal dichalcogenides and related materials |
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Doctoral thesis |
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2019 |
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224 p. |
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Doctoral thesis; Condensed Matter Theory (CMT) |
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Most recent IF: NA |
| Call Number |
UA @ admin @ c:irua:162525 |
Serial |
5412 |
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| Author |
Vieira De Castro, L. |
| Title |
Properties of quasi particles on two dimensional materials and related structures |
Type |
Doctoral thesis |
| Year |
2019 |
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Pages |
79 p. |
| Keywords |
Doctoral thesis; Condensed Matter Theory (CMT) |
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Most recent IF: NA |
| Call Number |
UA @ admin @ c:irua:161999 |
Serial |
5424 |
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| Author |
Yao, X. |
| Title |
An advanced TEM study on quantification of Ni4Ti3 precipitates in low temperature aged Ni-Ti shape memory alloy |
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Doctoral thesis |
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2019 |
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Pages |
149 p. |
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Doctoral thesis; Electron microscopy for materials research (EMAT) |
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Approved |
Most recent IF: NA |
| Call Number |
UA @ admin @ c:irua:164987 |
Serial |
6284 |
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| Author |
Trenchev, G. |
| Title |
Computational modelling of atmospheric DC discharges for CO2 conversion |
Type |
Doctoral thesis |
| Year |
2019 |
Publication |
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Abbreviated Journal |
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Issue |
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Pages |
206 p. |
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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:163986 |
Serial |
6290 |
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| Author |
Van der Paal, J. |
| Title |
Generation, transport and molecular interactions of reactive species in plasma medicine |
Type |
Doctoral thesis |
| Year |
2019 |
Publication |
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Abbreviated Journal |
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Issue |
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Pages |
237 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:162591 |
Serial |
6297 |
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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 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
130 p. |
| Keywords |
Doctoral thesis; Electron microscopy for materials research (EMAT) |
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Approved |
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 |
Publication |
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Abbreviated Journal |
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Issue |
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Pages |
207 p. |
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Doctoral thesis; Condensed Matter Theory (CMT) |
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Approved |
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 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
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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 |
Guzzinati, G.; Ghielens, W.; Mahr, C.; Béché, A.; Rosenauer, A.; Calders, T.; Verbeeck, J. |
| Title |
Electron Bessel beam diffraction patterns, line scan of Si/SiGe multilayer |
Type |
Dataset |
| Year |
2019 |
Publication |
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Abbreviated Journal |
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Issue |
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Pages |
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Dataset; ADReM Data Lab (ADReM); Electron microscopy for materials research (EMAT) |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:169114 |
Serial |
6865 |
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Guzzinati, G.; Béché, A.; McGrouther, D.; Verbeeck, J. |
| Title |
Rotation of electron beams in the presence of localised, longitudinal magnetic fields |
Type |
Dataset |
| Year |
2019 |
Publication |
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Abbreviated Journal |
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Issue |
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Pages |
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Dataset; Electron microscopy for materials research (EMAT) |
| Abstract |
Electron Bessel beams have been generated by inserting an annular aperture in the illumination system of a TEM. These beams have passed through a localised magnetic field. As a result a low amount of image rotation (which is expected to be proportional to the longitudinal component of the magnetic field) is observed in the far field. A measure of this rotation should give access to the magneti field. The two datasets have been acquired in a FEI Titan3 microscope, operated at 300kV. The file focalseries.tif contains a series of images acquired varying the magnetic field through the objective lens. The file lineprofile.ser contains a series of images acquired by scanning the beam over a sample with several magnetised nanopillars. For reference, check the associated publication. |
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no |
| Call Number |
UA @ admin @ c:irua:169135 |
Serial |
6883 |
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Jannis, D.; Müller-Caspary, K.; Béché, A.; Oelsner, A.; Verbeeck, J. |
| Title |
Spectrocopic coincidence experiment in transmission electron microscopy |
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Dataset |
| Year |
2019 |
Publication |
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Abbreviated Journal |
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Issue |
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Dataset; Electron microscopy for materials research (EMAT) |
| Abstract |
This dataset contains individual EEL and EDX events where for every event (electron or X-ray), their energy and time of arrival is stored. The experiment was performed in a transmission electron microscope (Tecnai Osiris) at 200 keV. The material investigated is an Al-Mg-Si-Cu alloy. The 'full_dataset.mat' contains the full dataset and the 'subset.mat' has the first five frames of the full dataset. The attached 'EELS-EDX.ipynb' is a jupyter notebook file. This file describes the data processing in order to observe the temporal correlation between the electrons and X-rays. |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:169112 |
Serial |
6888 |
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| Author |
Idrissi, H.; Samaee, V.; Lumbeeck, G.; van der Werf, T.; Pardoen, T.; Schryvers, D.; Cordier, P. |
| Title |
Supporting data for “In situ Quantitative Tensile Tests on Antigorite in a Transmission Electron Microscope” |
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Dataset |
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2019 |
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Dataset; Electron microscopy for materials research (EMAT) |
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The determination of the mechanical properties of serpentinites is essential towards the understanding of the mechanics of faulting and subduction. Here, we present the first in situ tensile tests on antigorite in a transmission electron microscope. A push-to-pull deformation device is used to perform quantitative tensile tests, during which force and displacement are measured, while the microstructure is imaged with the microscope. The experiments have been performed at room temperature on beams prepared by focused ion beam. The specimens are not single crystals despite their small sizes. Orientation mapping indicated that some grains were well-oriented for plastic slip. However, no dislocation activity has been observed even though engineering tensile stress went up to 700 MPa. We show also that antigorite does not exhibit an pure elastic-brittle behaviour since, despite the presence of defects, the specimens underwent plastic deformation and did not fail within the elastic regime. Instead, we observe that strain localizes at grain boundaries. All observations concur to show that under our experimental conditions, grain boundary sliding is the dominant deformation mechanism. This study sheds a new light on the mechanical properties of antigorite and calls for further studies on the structure and properties of grain boundaries in antigorite and more generally in phyllosilicates. |
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no |
| Call Number |
UA @ admin @ c:irua:169107 |
Serial |
6891 |
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| Author |
Bottari, F. |
| Title |
Bio(inspired) strategies for the electro-sensing of β-lactam antibiotics |
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Doctoral thesis |
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2019 |
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205 p. |
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Doctoral thesis; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
In the broad context of food and environmental safety, the development of selective and sensitive analytical tools for the detection of β-lactam antibiotics in milk down to their Maximum Residues Limits (MRL), is still an open challenge. To address this need, the design of new bio(mimetic) electrochemical sensors was investigated in the present thesis. These sensors are based on the intrinsic electrochemistry of β-lactam antibiotics, taking advantages of the characteristic electrochemical fingerprints of the core structures and redox active side chain groups. The electrochemistry of nafcillin (NAF) and the isoxazolyl penicillins (ISOXA) was investigated, identifying the peculiar electrochemical fingerprint of each antibiotic, proving that it is possible to use electrochemistry for the selective detection of these antimicrobial drugs. Once verified the applicability of a direct detection, different sensor configurations were tested mainly focusing on: – the selection and validation of aptamers to be used as bioreceptors in the development of β-lactam biosensors; – the design of biomimetic receptors, particularly molecularly imprinted polymers, and other synthetic electrode modifiers compatible with a direct detection strategy. The selection of novel aptamers was performed following both a traditional FluMag SELEX protocol and a novel variant based on graphene oxide (GO). First results with the modified GO-SELEX are promising but more work still needs to be done to validate this novel approach. The few aptamers for β-lactam antibiotics, already reported in literature by other groups, were poorly characterized up to now. For this reason, a multi-analytical characterization protocol for aptamer binding studies was optimized and validated by focusing on aptamer AMP17 against ampicillin. The protocol combines ITC, nESI-MS and 1H-NMR. Very striking was the fact that the aptamer sequence did not show any sign of specific binding for its target, even if it was used in many other studies in the past. This thesis now offers a validated protocol for testing the affinity and binding capabilities of aptamer sequences. In parallel, the functionalization of the electrode surface with polymer modifiers was studied. In particular we optimized a MIP electrochemical sensor based on 4-aminobenzoic acid for the direct electrochemical detection of CFQ. Another approach was tested based on the intrinsic affinity of NAF for an oPD electropolymerized film on the electrode surface. Both sensors were found to be sensitive and selective for the detection of CFQ and NAF at MRLs in buffer solutions. The proposed protocols are robust and promising for technological transfer. Lastly, the research activity was directed towards milk sample analysis following two parallel routes: the development of a pre-treatment protocol for raw milk, based on solvent addition (ACN or ISO), and the study of β-lactam antibiotics electrochemistry in undiluted raw milk with addition of KNO3 as supporting electrolyte. Both approaches gave encouraging results and the detection of NAF, CFQ and CFU in the micromolar range was achieved, with the second approach in undiluted raw milk. |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:164996 |
Serial |
7557 |
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| Author |
Sóti, V. |
| Title |
Catalytic detoxification of lignocellulose hydrolyzate |
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Doctoral thesis |
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2019 |
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Abbreviated Journal |
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XXVII, 243 p. |
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Doctoral thesis; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL); Biochemical Wastewater Valorization & Engineering (BioWaVE) |
| Abstract |
The present PhD research investigated the possibility of catalytic detoxification of poplar wood based and steam exploded lignocellulosic hydrolyzate with different types of laccase enzymes, with special focus on ethanol and lactic acid products at industrially relevant parameters: high final product concentration, high initial substrate loading and integrated processes. The simultaneous saccharification and fermentation (SSF) process was taken as a base case and five types of laccases were thoroughly investigated on their utilization potential. Phenolic removal from the liquid xylose rich fraction (XRF) was higher with fungal laccases (65-90 %) compared to approximately 30 % removal with bacterial laccase. Moreover, the optimal pH of fungal laccases was close to pH 4.5, the optimum for cellulase, while the bacterial laccase worked at basic pH. Integrating laccase treatment and hydrolysis together showed that fungal laccases have negative impact on final sugar concentration, while bacterial laccase had a strong positive effect. Although bacterial laccase removed less phenol and although its optimal conditions are difficult to integrate with hydrolysis, its enhancing effect on cellulase activity makes it a better candidate for application. The presence of the solid fraction (SF) alters the phenolic concentration evolution significantly, thus screening experiments with the liquid fraction alone do not provide sufficient information for the combined process. Magnetic Cross-Linked Enzyme Aggregates (m-CLEAs) immobilization was assessed for bacterial laccase. m-CLEAs decreased phenolic concentration faster at every pH compared to free bacterial laccase; however, the removal was caused by adsorption rather than by enzyme activity. Although the size of m-CLEAs particles are in the µm range, around 90 % of the initial catalyst mass was recycled from a dense (15 % substrate loading) mixture via magnetic separation. The high recycling rate is promising; m-CLEAs immobilization method can have industrial utilization potential. Minimum sugar revenue (MSR) estimations show that currently hardwood based MSR is 70 % more expensive than corn grain based MSR. About 7-10 fold cellulase activity increase will be needed until MSR will be competitive with corn grain MSR. However, m-CLEAs cellulase can already be competitive if the corn prices are in the higher regime of last year’s prices. |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:180125 |
Serial |
7584 |
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