Korneychuk S (2018) Local study of the band gap and structure of diamond-based nanomaterials by analytical transmission electron microscopy. Antwerpen
Keywords: Doctoral thesis; Electron microscopy for materials research (EMAT)
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“Impact of calibrated band-tails on the subthreshold swing of pocketed TFETs”. Bizindavyi J, Verhulst AS, Sorée B, Groeseneken G, Conference digest
T2 –, 76th Device Research Conference (DRC), JUN 24-27, 2018, Santa Barbara, CA (2018)
Keywords: P1 Proceeding; Condensed Matter Theory (CMT)
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Callewaert V (2018) Development and application of a non-local theory for the description of positron surface states. Antwerpen
Keywords: Doctoral thesis; Condensed Matter Theory (CMT)
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de Aquino BRCHT (2018) Carbon nanotubes and graphene based devices : from nanosensors to confined water. Antwerpen
Keywords: Doctoral thesis; Condensed Matter Theory (CMT)
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Verlackt C (2018) The behavior of plasma-generated reactive species in plasma medicine. Antwerpen
Keywords: Doctoral thesis; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
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Winckelmans N (2018) Advanced electron tomography to investigate the growth of homogeneous and heterogeneous nanoparticles. Antwerpen
Keywords: Doctoral thesis; Electron microscopy for materials research (EMAT)
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Claes N (2018) 3D characterization of coated nanoparticles and soft-hard nanocomposites. Antwerpen
Keywords: Doctoral thesis; Electron microscopy for materials research (EMAT)
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Bekaert J (2018) Ab initio description of multicomponent superconductivity in bulk to atomically thin materials. 290 p
Keywords: Doctoral thesis; Condensed Matter Theory (CMT)
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de Aquino BRCHT (2018) Carbon nanotubes and graphene based devices : from nanosensors to confined water. 161 p
Keywords: Doctoral thesis; Condensed Matter Theory (CMT)
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Mulkers J (2018) Confinement phenomena in chiral ferromagnetic films. 156 p
Keywords: Doctoral thesis; Condensed Matter Theory (CMT)
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Callewaert V (2018) Development and application of a non-local theory for the description of positron surface states. 151 p
Keywords: Doctoral thesis; Condensed Matter Theory (CMT)
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Flammia L (2018) Emergent phenomena in nanostructured quantum-confined superconducting films. 172 p
Keywords: Doctoral thesis; Condensed Matter Theory (CMT)
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Jelić, Ž, (2018) Emergent vortex phenomena in spatially and temporally modulated superconducting condensates. 181 p
Keywords: Doctoral thesis; Engineering sciences. Technology; Condensed Matter Theory (CMT)
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Ribeiro Gomes R (2018) The first order equations for the Ginzburg-Landau theory and the vortex states near a permalloy disk. 220 p
Keywords: Doctoral thesis; Condensed Matter Theory (CMT)
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“Machine Learning for Fast Characterization of Magnetic Logic Devices”. Kaintura A, Foss K, Couckuyt I, Dhaene T, Zografos O, Vaysset A, Sorée B, (edaps 2018) (2018)
Abstract: Non-charge-based logic devices are promising candidates for future logic circuits. Interest in studying and developing these devices has grown dramatically in the past decade as they possess key advantages over conventional CMOS technology. Due to their novel designs, a large number of micromagnetic simulations are required to fully characterize the behavior of these devices. The number and complexity of these simulations place large computational requirements on device development. We use state-of-the-art machine learning techniques to expedite identification of their behavior. Several intelligent sampling strategies are combined with machine learning multi-class classification models. These techniques are applied to a recently developed exchange-driven magnetic logic scheme that utilizes direct exchange coupling as the main driver.
Keywords: P1 Proceeding; Condensed Matter Theory (CMT)
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Saberi-Pouya S (2018) Many body properties in monolayer and doublelayer black phosphorus. 148 p
Keywords: Doctoral thesis; Condensed Matter Theory (CMT)
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Domingos JLC (2018) Study of colloidal systems of anisotropic magnetic particles. 114 p
Keywords: Doctoral thesis; Condensed Matter Theory (CMT)
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“Sublayer composition evaluation of Artwork using active thermography”. Steenackers G, Peeters J, Janssens K, Quantitative infrared thermography
T2 –, QIRT 2018 : 14th Quantitative InfraRed Thermography Conference , 503 (2018)
Abstract: Infrared artwork inspection is typically performed through active thermography and infrared reflectography (IRR) with different setups and cameras. While IRR is an established technique in the museum field, exploiting mainly the IR-A (0.7 – 1.4 mu m) band to probe for hidden layers and modifications within the paint stratigraphy system, active thermography operating in the IR-C range (3 -5 mu m) is less frequently employed with the aim to visualize structural defects and features deeper inside the build-up. In this work, we investigate the usability of an IR-B+C system to identify overpainted works of art below a relatively thick absorbing layer of lead white paint.
Keywords: P1 Proceeding; Engineering sciences. Technology; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
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“Technoques and applications of Surface-Enhanced Raman Scattering Spectroscopy (SERSS) focused on cultural heritage”. Kuckova S, Hamidi-Asl E, Matulkova I, Hynek R, De Wael K, Sanyova J, Janssens K, Chemické, listy 112, 312 (2018)
Abstract: The review is devoted to a modern method of vibrational spectroscopy – surface enhanced Raman spectroscopy Its principle and some of its special variants (imunnoSERS and TERS (Tip-Enhanced Raman Spectroscopy)) are described m a simpinified manner Wide application possibilities are demonstrated on selected examples from its application m culturinl heritage.
Keywords: A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Impact Factor: 0.387
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“Enhanced landfill mining at the REMO site : assessing stakeholders' perspectives for implementation”. Einhäupl P, Krook J, Svensson N, Van Acker K, Van Passel S, Proceedings of the 4th International Symposium on Enhanced Landfill Mining, February 5-6, 2018, Mechelen, Belgium / Jones, Peter Tom [edit.], Machiels, Lieven [edit.] (2018)
Keywords: P3 Proceeding; Engineering sciences. Technology; Engineering Management (ENM)
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Grubova IY (2018) Density functional theory study of interface interactions in hydroxyapatite/rutile composites for biomedical applications. 251 p
Keywords: Doctoral thesis; Engineering sciences. Technology; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
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Rahemi V (2018) Electrosensing applications by using titania as a support for bio(inspired) molecules. 133 p
Keywords: Doctoral thesis; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
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“Evidence of magnetostrictive effects on STT-MRAM performance by atomistic and spin modeling”. Sankaran K, Swerts J, Carpenter R, Couet S, Garello K, Evans RFL, Rao S, Kim W, Kundu S, Crotti D, Kar GS, Pourtois G, 2018 Ieee International Electron Devices Meeting (iedm) (2018)
Abstract: For the first time, we demonstrate, using an atomistic description of a 30nm diameter spin-transfer-torque magnetic random access memories (STT-MRAM), that the difference in mechanical properties of its sub-nanometer layers induces a high compressive strain in the magnetic tunnel junction (MTJ) and leads to a detrimental magnetostrictive effect. Our model explains the issues met in engineering the electrical and magnetic performances in scaled STT-MRAM devices. The resulting high compressive strain built in the stack, particularly in the MgO tunnel barrier (t-MgO), and its associated non-uniform atomic displacements, impacts on the quality of the MTJ interface and leads to strain relieve mechanisms such as surface roughness and adhesion issues. We illustrate that the strain gradient induced by the different materials and their thicknesses in the stacks has a negative impact on the tunnel magneto-resistance (TMR), on the magnetic nucleation process and on the STT-MRAM performance.
Keywords: P1 Proceeding; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
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“First-principles perspective on poling mechanisms and ferroelectric/antiferroelectric behavior of Hf1-xZrxO2 for FEFET applications”. Clima S, McMitchell SRC, Florent K, Nyns L, Popovici M, Ronchi N, Di Piazza L, Van Houdt J, Pourtois G, 2018 Ieee International Electron Devices Meeting (iedm) (2018)
Abstract: We investigate at the atomic level the most probable phase transformations under strain, that are responsible for the ferroelectric/ antiferroelectric behavior in Hf1-xZrxO2 materials. Four different crystalline phase transformations exhibit a polar/non-polar transition: monoclinic-to-orthorhombic requires a gliding strain tensor, orthorhombic-to-orthorhombic transformation does not need strain to polarize the material, whereas tetragonal-to-cubic cell compression and tetragonal-to-orthorhombic cell elongation destabilizes the non-polar tetragonal phase, facilitating the transition towards a polar atomic configuration, therefore changing the polarization-electric field loop from antiferroelectric to ferroelectric. Oxygen vacancies can reduce drastically the polarization reversal barriers.
Keywords: P1 Proceeding; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
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Stosic D (2018) High-performance Ginzburg-Landau simulations of superconductivity. 166 p
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.
Keywords: Doctoral thesis; Condensed Matter Theory (CMT)
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Samaee V (2018) In-situ transmission electron microscopic nanomechanical investigations of Ni. 172 p
Keywords: Doctoral thesis; Electron microscopy for materials research (EMAT)
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“Metallic ceramics for low resitivity interconnects : an ab initio insight”. Sankaran K, Moors K, Dutta S, Adelmann C, Tokei Z, Pourtois G, Proceedings of the IEEE ... International Interconnect Technology Conference
T2 –, IEEE International Interconnect Technology Conference (IITC), JUN 04-07, 2018, Santa Clara, CA , 160 (2018)
Abstract: The scalability potential of low resistivity ternary metallic alloys (MAX) as an interconnect medium has been benchmarked against copper through first-principle simulations. We report that some carbon and nitrogen MAX phases have the potential to display a reduced sensitivity of their intrinsic resistivity to scaling, while showing improved electromigration properties.
Keywords: P1 Proceeding; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
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Stosic D (2018) Numerical simulations of magnetic skyrmions in atomically-thin ferromagnetic films. 153 p
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.
Keywords: Doctoral thesis; Condensed Matter Theory (CMT)
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“The process of cutting GMLmn bodies with dm-knives”. Tavkhelidze I, Gielis J, Sn –, 1512-0066 32, 67 (2018)
Keywords: A3 Journal article; Sustainable Energy, Air and Water Technology (DuEL)
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Asapu R (2018) A study of plasmonic systems using Layer-by-Layer synthesized core-shell nanoparticles. 142 p
Keywords: Doctoral thesis; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL)
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