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Thèses sur le sujet « Atomic defect »

Auteur : Grafiati

Publié le 9 mars 2023

Mis à jour le 31 juillet 2025

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1

Siegl, Manuel. "Atomic-scale investigation of point defect interactions in semiconductors." Thesis, University College London (University of London), 2018. http://discovery.ucl.ac.uk/10043636/.

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Miniaturisation of computer hardware has increased the transistor density in silicon devices significantly and is approaching the ultimate physical limit of single atom transistors. A thorough understanding of the nature of materials at the atomic scale is needed in order to increase the transistor density further and exploit more recent technology proposals. Moreover, exploring other materials with more desirable characteristics such as wide band gap semiconductors with a higher dielectric strength and optical addressability are paramount in the effort of moving to a post-silicon era. Scannin

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2

Valikova, Irina, and Andrei Nazarov. "Pressure effects on point defect diffusion features in cubic metals: atomic simulation." Diffusion fundamentals 6 (2007) 48, S. 1-2, 2007. https://ul.qucosa.de/id/qucosa%3A14227.

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3

Lee, Donghun. "Atomic Scale Gate Electrode Formed by a Charged Defect: Scanning Tunneling Microscopy of Single Impurities in GaAs Semiconductors." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1274913629.

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4

Uppal, Hasan Javed. "Nanoscale performance, degradation and defect analysis of mos devices using high-k dielectric materials as gate stacks by atomic force microscopy." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.509394.

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5

Gilbert, Mark R. "BCC metals in extreme environments : modelling the structure and evolution of defects." Thesis, University of Oxford, 2010. http://ora.ox.ac.uk/objects/uuid:d972d28d-5d2d-4392-8cf5-fc5728dc74f6.

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Designing materials for fusion applications is a very challenging problem, requiring detailed understanding of the behaviour of materials under the kinds of extreme conditions expected in a fusion environment. During the lifetime of fusion-reactor components, materials will be subjected to high levels of neutron irradiation, but must still perform effectively at high operating temperatures and under significant loading conditions. Body-centred cubic (bcc) transition metals are some of the most promising candidates for structural materials in fusion because of their relatively high density, whi

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6

Jin, Xin. "Combining RBS/Channeling, X-ray diffraction and atomic-scale modelling to study irradiation-induced defects and microstructural changes." Thesis, Limoges, 2021. http://www.theses.fr/2021LIMO0017.

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Les particules énergétiques sont souvent impliquées dans les activités de la société moderne. Ils ont contribué à l'essor de l'industrie des semi-conducteurs et pourront à l'avenir jouer un rôle important dans la mise en forme des matériaux de manière contrôlée. Cependant, leur nature énergétique pose de grands défis. Ainsi, il est essentiel d'avoir une compréhension globale des mécanismes sous-jacents des défauts induits par l'irradiation et des changements microstructuraux associés. Expérimentalement, les effets induits par l'irradiation peuvent être suivis par des techniques de caractérisat

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7

CARUSO, FRANCESCO. "Study of electrical conduction and defects in high-permittivity metal oxides: experiments and simulation." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2022. http://hdl.handle.net/10281/382298.

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Inizialmente studiati dall’industria elettronica per sostituire lo strato isolante di SiO2, gli ossidi metallici sono ora ampiamente utilizzati come strati attivi o isolanti in una moltitudine di dispositivi elettronici. Le proprietà elettriche sono fortemente correlate ai difetti atomici, che generano stati elettronici localizzati all'interno del band gap che fungono da trappole di carica. La comprensione dei meccanismi fisici e del ruolo dei difetti che regolano il trasporto di carica negli ossidi metallici è pertanto della massima importanza per l'ottimizzazione dei dispositivi nanoelettron

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8

Bagués, Salguero Núria. "Atomic and electronic structure of self-organized defects in epitaxial films of functional perovskite-type oxides." Doctoral thesis, Universitat Autònoma de Barcelona, 2017. http://hdl.handle.net/10803/405668.

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Les capes fines epitaxials d’òxids funcionals tipus perovskita (ABO3) presenten mecanismes d’acoblament d’intercara i de relaxació del desajust governats per un joc complex de graus de llibertat químics, electrònics i estructurals. Aquests mecanismes poden acomodar defectes, tals com dislocacions de desajust i parets de macla, que presenten una gran tendència a l’auto-organització amb escales característiques de desenes de nanòmetres. L’estructura de la xarxa en el nucli d’aquests defectes és diferent de la major part del material, i per tant pot ser considerat com una nano-fase amb propietats

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9

Khazaka, Rami. "From atomic level investigations to membrane architecture : an in-depth study of the innovative 3C-SiC/Si/3C-SiC/Si heterostructure." Thesis, Tours, 2016. http://www.theses.fr/2016TOUR4023/document.

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Le polytype cubique du carbure de silicium (3C-SiC) est un matériau très prometteur pour les applications MEMS. En plus de sa tenue mécanique et chimique, il peut être épitaxié sur des substrats Si de faible coût. De plus, l'hétéroépitaxie multiple, c’est-à-dire quand on empile plusieurs couches Si et 3C-SiC peut ouvrir des pistes pour de nouveaux dispositifs à base de 3C-SiC. Vue la complexité de développer de telles hétérostructures, nous avons procédé à l'amélioration de la qualité de chaque couche séparément. De plus, nous avons mené une étude approfondie sur la nature des défauts dans cha

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10

Drain, John Frederick. "Development of magnetic bond-order potentials for Mn and Fe-Mn." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:68a01493-4a20-4d78-ad4a-6c3c2fe072d6.

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While group VII 4d Tc and 5d Re have hexagonally close-packed (hcp) ground states, 3d Mn adopts the complex chi-phase which exhibits non-collinear magnetism. Density functional theory (DFT) calculations have shown that without magnetism the chi-phase remains the ground state of Mn implying that magnetism is not the critical factor, as is commonly believed, in driving the anomalous stability of the chi-phase over hcp. Using a tight-binding (TB) model it is found that while harder potentials stabilise close-packed hcp, a softer potential stabilises the more open chi-phase. By analogy with the st

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11

Xu, Shuo. "A study of irradiation damage in iron and Fe-Cr alloys." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:fec4b2d0-411e-4c20-862d-e5fd884367f3.

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Irradiation damage structures induced in pure Fe and Fe-Cr (up to 14%Cr) alloys by 2 MeV Fe+ ion irradiations in the temperature range 300-460°C were investigated by transmission electron microscopy. Specimens were irradiated in bulk to doses of 1.5 x 1019 Fe+/m2 (about 2.5 displacements per atom: dpa) and 4.5 x 1019 Fe+/m2 (about 7 dpa). In most cases, damage took the form of dislocation loops with diameters from 2-100nm; the loops were distributed uniformly within all the samples. At higher irradiation temperatures (400°C, 460°C), complex microstructures such as finger loops (50nm in width a

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12

Liu, Qiong. "Mechanical properties of Ti-o based ceramic nanowires." Thesis, Queensland University of Technology, 2020. https://eprints.qut.edu.au/201954/1/Qiong_Liu_Thesis.pdf.

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This thesis thoroughly investigated the mechanical properties of Ti-O based ceramic nanowires. It revealed that elastic bending properties including elastic strain and elastic moduli of different kinds of Ti-O based ceramic nanowires were related to their crystalline structures, defects in the structures, and defect activities during bending deformation. These findings help to provide more opportunities for strain engineering on Ti-O NWs and promote potential applications of Ti-O NW-based devices.

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13

Bouillaud, Pascal. "Irradiation aux ions lourds de films minces nanocristallins d'alliages FeCo et FeAl." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37612171v.

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14

De, Souza Maria Merlyne. "Atomic level diffusion mechanisms in silicon." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319817.

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15

Zhang, Shu Yan. "High energy white beam X-ray diffraction studies of strains in engineering materials and components." Thesis, University of Oxford, 2008. http://ora.ox.ac.uk/objects/uuid:957786c6-114c-40f1-8ee7-649c8b2522bc.

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The primary aim of this research was to develop and improve the experimental method and data interpretation for strain measurements using diffraction methods to gain a better understanding of micromechanical deformation and anisotropy of lattice strain response. Substantial part of the research was devoted to the development of the laboratory high energy X-ray diffractometer (HEXameter) for bulk residual strain evaluation. White beam energy dispersive X-ray diffraction was chosen as the principal diffraction mode due to its extreme efficiency in utilising X-ray flux and its ability to capture

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16

Robertson, Alexander William. "Synthesis and characterisation of large area graphene." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:aee750dd-41b8-4462-9efa-4e89e06e0ed7.

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The pursuit of high quality, large area graphene has been a major research focus of contemporary materials science research, in the wake of the discovery of the multitude of exceptional properties exhibited by the material. The DPhil project was undertaken with the objective of developing an understanding of the growth of large graphene sheets by chemical vapour deposition (CVD), and also in the subsequent characterisation of their material properties. By conducting atmospheric pressure CVD growth at high methane flow rates, it was found that few-layered graphene (FLG) could be deposited on a

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17

Atkinson, Kurt James William. "Atomic scale simulation of defects in bulk materials and monolayer surfaces." Thesis, Imperial College London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.397160.

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18

FILHO, HENRIQUE DUARTE DA FONSECA. "SEMICONDUCTOR NANOSTRUCTURE FABRICATION IN MECHANICAL DEFECTS PRODUCED BY ATOMIC FORCE MICROSCOPY." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2008. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=12973@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>A combinação de alta densidade, locais seletivos de nucleação e controle da distribuição de tamanho de nanoestruturas semicondutoras tem acelerado o desenvolvimento de dispositivos ópticos e eletrônicos. Para construir estruturas satisfazendo essas necessidades, várias combinações de técnicas deposição de pontos quânticos e nanolitografia foram desenvolvidas. A nanolitografia por AFM foi aplicada em diversos materiais abrindo uma possibilidade para fabricar dispositivos opto-eletrônicos.Nesta tese de Doutorado, apresentamo

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19

Chen, Qu. "Structural studies of defects in two-dimensional materials with atomic resolution." Thesis, University of Oxford, 2017. https://ora.ox.ac.uk/objects/uuid:392f2b1d-0488-4d10-96d9-817def04db2a.

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Defective structures in two-dimensional (2D) materials have been proved to have significant influences on the materials' properties. Understanding structural defects in 2D materials at atomic scale is therefore required. With the use of advanced imaging techniques, one of the main approaches applied in this project was aberration-corrected transmission electron microscopy (AC-TEM), the structures are able to be resolved with single-atom sensitivity with the reduction of both spherical aberration and the influence of chromatic aberration. This laid the foundation for the first two experiments,

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20

Watson, Stuart. "Structural relaxation at defects by Ab initio molecular dynamics." Thesis, University of Oxford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320648.

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21

Xu, Tao. "Low-dimensional atomic-scale multiferroics in nonmagnetic ferroelectrics from lattice defects engineering." Kyoto University, 2017. http://hdl.handle.net/2433/227622.

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22

Grinolds, Michael Sean. "Nanoscale Magnetic Resonance Imaging and Magnetic Sensing Using Atomic Defects in Diamond." Thesis, Harvard University, 2014. http://dissertations.umi.com/gsas.harvard:11544.

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Magnetic resonance imaging (MRI) has revolutionized modern medicine by providing non-invasive, chemically selective, three-dimensional imaging of living organisms. Industrial-scale MRI has the capability to image with millimeter-scale spatial resolution and has the sensitivity to detect as few as \(10^{14}\) nuclear spins. Increasing spatial resolution to the atomic scale and sensitivity to the single-spin level would enable a wide array of applications most notably including imaging molecular structur. However, conventional MRI methods are already highly optimized, and further order-of-magnit

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23

Dudda, Bruna. "Morphology of leds by atomic force microscopy." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/6647/.

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The concern of this work is to present the characterization of blue emitting GaN-based LED structures by means of Atomic Force Microscopy. Here we show a comparison among the samples with different dislocation densities, in order to understand how the dislocations can affect the surface morphology. First of all we have described the current state of art of the LEDs in the present market. Thereafterwards we have mentioned in detail about the growth technique of LED structures and the methodology of the characterization employed in our thesis. Finally, we have presented the details of the result

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24

Bottomley, Joseph Anthony. "Novel application of atomic force microscopy to the analysis of barrier film defects." Thesis, University of Birmingham, 2012. http://etheses.bham.ac.uk//id/eprint/3672/.

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As a result of numerous advantages over glass based devices, flexible displays continue to gather momentum. Many problems associated with fabrication of devices on polymers have been overcome, but the detrimental effect of water permeation through these substrates due to defects is still prevalent despite attempts to block pinholes with thin film barrier materials. A rigorous study of film defects using atomic force microscopy (AFM) plus novel application of the calcium test, with additional scanning electron microscopy and white light interferometry data has been undertaken. While pursuing th

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25

Rahman, Shams ur. "Probing the effect of oxygen vacancies in strontium titanate single crystals." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:0b153fd2-3aa8-4fe5-b811-8ac42b4457fa.

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This thesis describes investigations into the role of non-stoichiometry in the surface and bulk properties of SrTiO<sub>3</sub> single crystals. A family of (n×n) reconstructions, where n = 2, 3, 4, 5, 6 are produced by argon ion sputtering of the SrTiO<sub>3</sub> (111) single crystals and subsequent annealing in UHV or in an oxygen rich environment. The sputtering process introduces defects or oxygen vacancies in the surface region of the sample, whilst the annealing gives rise to surface reconstructions. The surface preparation conditions such as sputtering time, annealing temperature and e

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26

Tuesday, Andrew J. "Modeling Atomic Defects in a Two-Dimensional Lennard-Jones Lattice Using Molecular Dynamics Simulations." University of Akron / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1334579948.

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27

Söngen, Hagen [Verfasser]. "Atomic force microscopy at mineral-water interfaces : hydration, chemical identification and point defects / Hagen Söngen." Mainz : Universitätsbibliothek Mainz, 2018. http://d-nb.info/1160611017/34.

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28

Gong, Chuncheng. "Atomic structure and dynamics study of defects in graphene by aberration-corrected transmission electron microscope." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:53bd9a04-71ad-4da8-b982-cb45a005e791.

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Graphene has grabbed enormous research attention due to its multiple unique properties. These properties, however, can be strongly influenced by lattice imperfections. Aberration corrected transmission electron microscopy (AC-TEM) is one of the leading methods to image two-dimensional materials at the atomic level. This thesis addresses the issue of structure and dynamics characterization of dislocations and grain boundaries (GBs) in graphene with single atom sensitivity using the state-of-the-art AC-TEM in Department of Materials, University of Oxford. My first goal is to understand the inter

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29

Johnson, Jared M. "Atomic Scale Characterization of Point Defects in the Ultra-Wide Band Gap Semiconductor β-Ga2O3". The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1577916628182296.

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30

Bîlteanu, Liviu. "Atomic scale simulation of hydrogen related defects in hydrogen implanted silicon - Smart Cut™ technology." Paris 11, 2010. http://www.theses.fr/2010PA112293.

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Le sujet de cette thèse est lié à l'étape d'implantation de la technologie Smart Cut™. Cette technologie utilise l'hydrogène pour transférer des couches de silicium sur des substrats isolants. Le transfert se fait par une fracture induite par la formation des défauts bidimensionnels appelés dans la littérature des plaquettes (en anglais « platelets »). Plus précisément, nous avons étudié dans le cadre de cette thèse les défauts qui apparaissent dans l'état post implantation et leur évolution de l'endommagement d'implantation vers l'état qui contient des plaquettes. L'étude est organisée en deu

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31

Gehrmann, Jan. "Transferable reduced TB models for elemental Si and N and binary Si-N systems." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:002b0c99-0e9d-4d8c-a0dc-ad07383f083f.

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Silicon nitride is a bulk and a coating material exhibiting excellent mechanical properties. The understanding of the complex processes at the nanometre scale gained through experimental research will be enhanced by the existence of a computationally efficient and accurate model that is able to describe the mechanical properties of silicon nitride. Such a model has yet to be proposed. In this thesis we present a transferable reduced tight-binding (TB) model for the silicon nitride system. More precisely, this model consists of a reduced TB model for elemental silicon, a reduced TB model for el

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Messina, Luca. "Multiscale modeling of atomic transport phenomena in ferritic steels." Doctoral thesis, KTH, Reaktorfysik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-177525.

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Defect-driven transport of impurities plays a key role in the microstructure evolution of alloys, and has a great impact on the mechanical properties at the macroscopic scale. This phenomenon is greatly enhanced in irradiated materials because of the large amount of radiation-induced crystal defects (vacancies and interstitials). For instance, the formation of nanosized solute clusters in neutron-irradiated reactor pressure vessel (RPV) ferritic steels has been shown to hinder dislocation motion and induce hardening and embrittlement. In Swedish RPV steels, this mechanical-property degradation

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33

Ghorbani, Nohadanimoghaddam Elaheh [Verfasser]. "Atomic scale defects in thin film solar cell materials from ab initio calculations / Elaheh Ghorbani Nohadanimoghaddam." Mainz : Universitätsbibliothek Mainz, 2016. http://d-nb.info/111234246X/34.

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Chow, Ernest Ho Hin. "The study of organic crystals by atomic force microscopy." Thesis, University of Cambridge, 2014. https://www.repository.cam.ac.uk/handle/1810/245569.

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Organic crystals are found in everyday goods such as foods, drugs, dyes, and agricultural products. To better understand the solid-state behaviour of organic crystals, the study of their surfaces is crucial, as several reactions occur at the interface between the crystal surface and its immediate environment. While atomic force microscopy (AFM) is a useful tool for studying surfaces, it is not a common technique for studying organic crystals. The rst part of this report aims to address problems of imaging organic crystals by AFM which arise from the nature of the imaging technique and the mate

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35

Evans, Geraint Andrew. "Characterisation of point defects in SiC by microscopic optical spectroscopy." Thesis, University of Bristol, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391196.

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36

Loth, Sebastian. "Atomic Scale Images of Acceptors in III-V Semiconductors." Doctoral thesis, Göttingen Univ.-Verl. Göttingen, 2007. http://hdl.handle.net/11858/00-1735-0000-0006-B466-2.

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37

Rashetnikava, Alena, Alexander Germanov, Irina Valikova, and Andrei Nazarov. "Molecular dynamics simulation of atomic structure in the vicinity of point defects in FCC and BCC metals." Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-190156.

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Rashetnikava, Alena, Alexander Germanov, Irina Valikova, and Andrei Nazarov. "Molecular dynamics simulation of atomic structure in the vicinity of point defects in FCC and BCC metals." Diffusion fundamentals 11 (2009) 52, S. 1-2, 2009. https://ul.qucosa.de/id/qucosa%3A14014.

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Chen, Jhewn-Kuang. "The role of defects during precipitate growth in a Ni-45wt% Cr alloy." Diss., This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-06062008-162241/.

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40

Nedelkoski, Zlatko. "The atomic and spin-electronic structure of interfaces and extended structural defects in the Co-based full Heusler alloys." Thesis, University of York, 2017. http://etheses.whiterose.ac.uk/16736/.

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The atomic and spin-electronic structure of interfaces and extended structural defects in the Co-based full Heusler alloys is studied. Interfaces between a half-metallic Heusler alloy and metal or semiconductor are fundamental and determine the performance of spintronic devices such as spin valves or devices for spin injection applications. It is shown that for the Co2MnSi/Ag bulk-like terminated interfaces, the interfacial spin-polarisation significantly depends on the atomic plane termination. In addition, on the example of experimentally realised interface, part of a spin valve, it is demon

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41

Hardie, Christopher David. "Micro-mechanics of irradiated Fe-Cr alloys for fusion reactors." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:a3ac36ba-ca6f-4129-8f37-f1278ef8a559.

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In the absence of a fusion neutron source, research on the structural integrity of materials in the fusion environment relies on current fission data and simulation methods. Through investigation of the Fe-Cr system, this detailed study explores the challenges and limitations in the use of currently available radiation sources for fusion materials research. An investigation of ion-irradiated Fe12%Cr using nanoindentation with a cube corner, Berkovich and spherical tip, and micro-cantilever testing with two different geometries, highlighted that the measurement of irradiation hardening was larg

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42

Baimpas, Nikolaos. "'Hybrid' non-destructive imaging techniques for engineering materials applications." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:1aa00fed-34e6-4a5e-951b-c710e21ac23c.

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The combination of X-ray imaging and diffraction techniques provides a unique tool for structural and mechanical analysis of engineering components. A variety of modes can be employed in terms of the spatial resolution (length-scale), time resolution (frequency), and the nature of the physical quantity being interrogated. This thesis describes my contributions towards the development of novel X-ray “rich” imaging experimental techniques and data interpretation. The experimental findings have been validated via comparison with other experimental methods and numerical modelling. The combination

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43

Guttman, Jeremy. "Polymer-based Tunnel Diodes Fabricated using Ultra-thin, ALD Deposited, Interfacial Films." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1469125487.

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44

Jackson, Christine M. "Correlations of Electronic Interface States and Interface Chemistry on Dielectric/III Nitride Heterostructures for Device Applications." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu15257361319909.

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45

Willke, Philip [Verfasser], Martin [Akademischer Betreuer] Wenderoth, Martin [Gutachter] Wenderoth, Konrad [Gutachter] Samwer, and Rolf [Gutachter] Möller. "Atomic-scale transport in graphene: the role of localized defects and substitutional doping / Philip Willke ; Gutachter: Martin Wenderoth, Konrad Samwer, Rolf Möller ; Betreuer: Martin Wenderoth." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2017. http://d-nb.info/1149958421/34.

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Reiche, Rainer. "Elektronenspektroskopie und Faktoranalyse zur Untersuchung von ionenbeschossenen Metall (Re, Ir, Cr, Fe)-Silizium-Schichten." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2000. http://nbn-resolving.de/urn:nbn:de:swb:14-994160101234-34968.

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47

Pohl, Johan [Verfasser], Karsten [Akademischer Betreuer] Albe, and Hans-Werner [Akademischer Betreuer] Schock. "Structure and properties of defects in photovoltaics absorber material: Atomic scale computer simulations of Si and Cu(In,Ga)Se2 / Johan Pohl. Betreuer: Karsten Albe ; Hans-Werner Schock." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2013. http://d-nb.info/1112268480/34.

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Newman, Nicholas C. "Traffic Related Air Pollution Exposure in the First Year of Life and Hyperactivity at Age Seven in a High Risk Atopic Birth Cohort." University of Cincinnati / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1312293718.

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Isik, Mehmet. "Optical And Electrical Characterization Of Ga0.75in0.25se Layered Single Crystals." Phd thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615314/index.pdf.

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In the present thesis, optical and electrical properties of Ga0.75In0.25Se layered single crystals have been studied. The optical properties of the crystals have been investigated by means of visible and infrared reflectivity and transmittance, ellipsometry, Raman spectroscopy, photoluminescence (PL) and thermoluminescence (TL) measurements. The analysis of the absorption data at room temperature revealed the existence of indirect transitions in the crystal. Moreover, the rate of change of the band gap energy with temperature was calculated from the analysis of the temperature dependence of t

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50

Reiche, Rainer. "Elektronenspektroskopie und Faktoranalyse zur Untersuchung von ionenbeschossenen Metall (Re, Ir, Cr, Fe)-Silizium-Schichten." Doctoral thesis, Technische Universität Dresden, 1999. https://tud.qucosa.de/id/qucosa%3A24738.

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