Relevant bibliographies by topics / Electron microscopy (TEM) / Dissertations / Theses
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Dissertations / Theses on the topic 'Electron microscopy (TEM)'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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1

Schellkopf, Leonard. "Investigation of Polymer Systems in Solutions with Electron Microscopy and Scattering Methods." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-167948.

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This work is focused on the visualization and thus in the aid in finding explanations for the behavior of polymer structures as they exist in solution. For this aim, preparation and imaging techniques based on cryo-TEM protocols were developed for a large variety of polymeric specimens using new commercially available devices and the results were compared with the findings of other means of structural investigations. The systems used in this work were chosen, as their investigations can be adapted to other polymer systems by slight adaptation of the preparation procedures.
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2

TIYYAGURA, MADHAVI. "TRANSMISSION ELECTRON MICROSCOPY STUDIES IN SHAPE MEMORY ALLOYS." Master's thesis, University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3913.

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In NiTi, a reversible thermoelastic martensitic transformation can be induced by temperature or stress between a cubic (B2) austenite phase and a monoclinic (B19') martensite phase. Ni-rich binary compositions are cubic at room temperature (requiring stress or cooling to transform to the monoclinic phase), while Ti-rich binary compositions are monoclinic at room temperature (requiring heating to transform to the cubic phase). The stress induced transformation results in the superelastic effect, while the thermally induced transformation is associated with strain recovery that results in the sh
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3

Karlsson, Linda. "Transmission Electron Microscopy of 2D Materials : Structure and Surface Properties." Doctoral thesis, Linköpings universitet, Tunnfilmsfysik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-127526.

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During recent years, new types of materials have been discovered with unique properties. One family of such materials are two-dimensional materials, which include graphene and MXene. These materials are stronger, more flexible, and have higher conductivity than other materials. As such they are highly interesting for new applications, e.g. specialized in vivo drug delivery systems, hydrogen storage, or as replacements of common materials in e.g. batteries, bulletproof clothing, and sensors. The list of potential applications is long for these new materials. As these materials are almost entire
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4

Sharp, Joanne. "Electron tomography of defects." Thesis, University of Cambridge, 2010. https://www.repository.cam.ac.uk/handle/1810/228638.

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Tomography of crystal defects in the electron microscope was first attempted in 2005 by the author and colleagues. This thesis further develops the technique, using a variety of samples and methods. Use of a more optimised, commercial tomographic reconstruction program on the original GaN weak beam dark-field (WBDF) tilt series gave a finer reconstruction with lower background, line width 10-20 nm. Four WBDF tilt series were obtained of a microcrack surrounded by dislocations in a sample of indented silicon, tilt axes parallel to g = 220, 220, 400 and 040. Moiré fringes in the defect impaired
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5

Melichárek, Václav. "Návrh manipulátoru pro TEM." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417138.

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The topic of this master’s thesis is the design of a sample manipulator for TEM. Regarding which the segment of the sample manipulator used to move the sample in the direction of the x-axis (so-called x-stage) was designed. The introductory theoretical part is concerned with a brief description of transmission electron microscopy focused on the imaging methods used in TEM and the procedures of preparing and loading TEM samples. The theoretical part follows with the design of precise mechanisms, especially with respect to the inaccuracies of their operation and the technological aspect of the d
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6

Wan, Qian. "Transmission electron microscopy study of heterostructures grown on GaAs (110)." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2014. http://dx.doi.org/10.18452/16949.

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In der Arbeit werden die mikrostrukturellen Eigenschaften von an (110)-Flächen orientierten Heterostrukturen auf GaAs-Substraten mittels verschiedener Techniken der Transmissionselektronenmikroskopie untersucht. Kubisch flächenzentrierte (Al,Ga)As/AlAs/GaAs Mehrschichtstrukturen auf GaAs(110) weisen in orthogonalen Richtungen parallel zur Substratoberfläche verschiedene Mechanismen zur Aufnahme der Verspannungen aufgrund von Fehlanpassungen auf. Defektfreie Strukturen sind durch eine geeignete, kurz periodische AlAs/GaAs-Überstruktur erfolgreich realisiert worden. Abschließend sind künstliche
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7

Asaulenko, L. G., L. M. Purish, and D. R. Abdulina. "Use of the Transmission Electron Microscopy for Examination of Biofilms Structure." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35267.

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Combination of transmission electron microscopy technics with colloidal gold labeled lectin staining allowed investigating glycoconjugates in biofilms of the corrosion relevant bacteria. Lectins with the same specificity were found to express different affinity to the compounds of the bacterial biofilms. LBA lectin showed the highest binding capacity to N-acetyl-D-galactosamine in Desulfovibrio sp. 10 and Bacillus subtilis 36 biofilms. For the assessment of N-acetyl-D-glucosamine presence in Bacillus subtilis 36 and Pseudomonas aeruginosa 27 biofilms WGA lectin was the most efficient. Sta
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8

Ayele, Yohannes Haileyesus. "Region-Based Contrast Transfer Function correction for Electron Microscopy Images." Thesis, KTH, Skolan för teknik och hälsa (STH), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-119305.

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Electron crystallography is one of the methods for determining the structure of membrane proteins. However, the resolution that we get from electron crystallography of membrane proteins is limited by crystal disorder and inaccurate determination of contrast transfer function (CTF) parameters. To overcome these problems, we applied single particle refinement with local averaging for long range variation of the crystals and local region-based CTF correction for the tilted images. These two corrections are done on the Melibiose Permease (MelB) data sets and a resolution of 8.6Å is reported.<br>El
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9

Agnese, Fabio. "Advanced transmission electron microscopy studies of semiconductor nanocrystals synthesized by colloidal methods." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAY043/document.

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Les recherches sur les nanocristaux semiconducteur (NCs) ont conduit à des résultats scientifiques fascinants, spécialement pour l'application en dispositifs optoelectroniques. Afin de répondre à certaines exigences comme des coûts mineurs, des gains d'efficacité, des composants respectueux de l'environnement, etc., des nouvelles méthodes sont explorées: dans les procédés en solution, dans l'ingénierie de bande et des niveaux d'énergie. En particulier, la méthode de synthèse peut influencer les propriétés optoélectroniques. Par conséquent, une meilleure compréhension des facteurs complexes pen
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10

Lai, Pooi-fun. "TEM and structural investigations of synthesized and modified carbon materials /." Connect to thesis, 1999. http://eprints.unimelb.edu.au/archive/00000770.

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11

Caballero-Alias, Ana Maria. "The role of silica in mineralising tissues." Thesis, Nottingham Trent University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302515.

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12

Xin, Renlong. "TEM studies of calcium phosphates for the understanding of biomineralization /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?MECH%202006%20XIN.

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13

Burton, Nicholas C. "Characterisation of strain and microstructure variation in synthetic diamond by electron microscopy and cathodoluminescence." Thesis, University of Bristol, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296701.

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14

Toth-Antal, Bence Materials Science &amp Engineering Faculty of Science UNSW. "Development of copper-alumina composites for abrasive wear applications." Awarded By:University of New South Wales. Materials Science & Engineering, 2008. http://handle.unsw.edu.au/1959.4/44504.

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Copper-alumina composites were developed for testing in abrasive wear applications. The composites featured a porous continuous ceramic-preform network infiltrated by a liquid metal to form the final consolidated composite. The liquid metal phase was pure copper. Six different ceramic preform variants were tested. Ceramic volume fractions of 40, 50 and 60% were used, of two preform types; one pure-alumina, and one with additional 2wt% copper(I) oxide (CU20), functioning as an infiltration aid, the effects of which were determined in a previous study; the copper-oxide reduced infiltration pres
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Lozano-Perez, Sergio. "TEM crack tip investigations of SCC." Thesis, University of Oxford, 2002. http://ora.ox.ac.uk/objects/uuid:7e503ff9-782a-4f74-b184-dddaa96e03e2.

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Over the last few years, TEM has become a powerful technique to study cracks and specially crack tips. However, the number of publications including TEM results has not grown as it was expected. The main reason for this might be difficulties in the sample preparation. In this work we present a novel FIB sample preparation technique which has proved to be an ideal tool for preparing cross sectional samples containing crack tips. The morphology of intergranular stress corrosion cracking (IGSCC) has been investigated in Alloy 600 subjected to constant load and slow strain rate tests in simulated
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16

Romano, Rodríguez Albert. "TEM techniques for the development of ULSI technology." Doctoral thesis, Universitat de Barcelona, 1991. http://hdl.handle.net/10803/667698.

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In the last decade transmission electron microscopy (TEM) has become one of the most powerful tools for the structural characterization of crystalline materials. Especially in the field of microelectronics development and production, the information obtained by this analytical tool has been of vital importance for the improvement of the different processing steps. With the reduction of the dimensions of the devices TEM is the only technique that can give information with enough spatial resolution. In this work applications of transmission electron microscopy for the study of processing step
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17

Cardoch, Sebastian. "Studying Atomic Vibrations by Transmission Electron Microscopy." Thesis, Uppsala universitet, Materialteori, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-305370.

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We employ the empirical potential function Airebo to computationally model free-standing Carbon-12 graphene in a classical setting. Our objective is to measure the mean square displacement (MSD) of atoms in the system for different average temperatures and Carbon-13 isotope concentrations. From results of the MSD we aim to develop a technique that employs Transmission Electron Microscopy (TEM), using high-angle annular dark filed (HAADF) detection, to obtain atomic-resolution images. From the thermally diffusive images, produced by the vibrations of atoms, we intent to resolve isotopes types i
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18

Liu, Yang. "‘Tri-3D’ electron microscopy tomography by FIB, SEM and TEM : Application to polymer nanocomposites." Thesis, Lyon, INSA, 2013. http://www.theses.fr/2013ISAL0076/document.

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Ce travail a porté sur la caractérisation et la quantification en 3D de la répartition de charges de différents types (nanoparticules, nanotubes, etc.) dans des matrices polymères. Nous nous focalisons sur les techniques de tomographie en microscopie électronique. Une approche multiple en tomographie électronique a été réalisée : la tomographie en FIB/MEB (faisceau d’ions focalisé/microscope électronique à balayage), la tomographie en MEB et la tomographie en MET (microscope électronique en transmission). Les nanocomposites polymère sont généralement élaborés aux fins d’améliorer les propriété
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19

Nukala, Haritha. "QUANTITATIVE THICKNESS MAPPING IN HIGH-ANGLE ANNULAR DARK-FIELD (HAADF) SCANNING TRANSMISSION ELECTRON MICROSCOPY (STEM)." Master's thesis, University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4292.

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Only a few methods are currently available for the measurement of sample thicknesses in Transmission Electron Microscopy (TEM). These methods, Convergent-Beam Electron Diffraction (CBED) and thickness mapping in Energy-Filtered TEM (EFTEM), are either elaborate or complex. In this present work, I have investigated and come up with a simple straight-forward method to measure the local thickness of a TEM sample with the atomic number (Z-contrast) imaging using High-Angle Annular Dark Field (HAADF) Scanning Transmission Electron Microscopy (STEM). HAADF STEM shows atomic number contrast for high
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20

Rivera, Felipe. "Electron Microscopy Characterization of Vanadium Dioxide Thin Films and Nanoparticles." BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/2975.

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Vanadium dioxide (VO_2) is a material of particular interest due to its exhibited metal to insulator phase transition at 68°C that is accompanied by an abrupt and significant change in its electronic and optical properties. Since this material can exhibit a reversible drop in resistivity of up to five orders of magnitude and a reversible drop in infrared optical transmission of up to 80%, this material holds promise in several technological applications. Solid phase crystallization of VO_2 thin films was obtained by a post-deposition annealing process of a VO_{x,x approx 2} amorphous film sput
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21

Tyborowski, Tobias. "Determining the interwall spacing in carbon nanotubes by using transmission electron microscopy." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-45754.

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The interwall spacing of multi-walled carbon nanotubes has an effect on their physical and chemical properties. Tubes with larger interwall spacing - compared to the spacing where the carbon atoms are in their natural distance to each other - are for instance expected to be mechanically less stable. Considering the MWCNT interwall spacing’s dependence on the tube size, three interesting previous studies with slightly different conclusions can be found. All of them conclude an increase of the interwall spacing with a decreasing tube size. We describe their analysis procedure, compare them to ea
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22

York, Greg Allen. "TEM/EDXS studies of phase separation in block and graft copolymers." Thesis, Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/80085.

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The relationships between molecular parameters and microdomain formation of a variety of block- and graft-copolymers were studied by Transmission Electron Microscopy (TEM). Molecular variables included chemical composition: dimethyl-, fluoropropyl and diphenyl-siloxane , sulfone styrene, paramethylstyrene, t-butylstyrene, arylester and methyl methacrylate, as well as molecular weight and distribution. Effects of the kinetics of phase-separation were also determined . Thick (approximately lmm) films cast from solvent showed more complete phase separation than either thin (about 10nm) cast films
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23

Barrett, Heather A. "A COMPARATIVE TRANSMISSION ELECTRON MICROSCOPY INVESTIGATION OF DEFECTS AND TEXTURES IN CRYPTOMELANE." Miami University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=miami1375787636.

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24

Barbieri, Francesco. "INVESTIGATING THE FUNCTIONAL MORPHOLOGY OF IN SITU IFT TRAINS BY CORRELATIVE LIGHT-ELECTRON MICROSCOPY." Doctoral thesis, Università di Siena, 2018. http://hdl.handle.net/11365/1052316.

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Cilia and flagella are cellular organelles involved in several and crucial aspects for the cell, tissue and organs normal physiology. Cilia can be classified according to their ability to perform a movement or not. Eukaryotic unicellular organisms and particular cells of mostly evolved organisms, i. e. spermatozoa, have evolved motile cilia for the cell propulsion in liquid media. Ciliated epithelia direct the movement of fluids by the ciliary beating. The primary cilium is an immotile cilium present in all the so far studied metazoan. This organelle is ubiquitous in human somatic cells when t
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Burke, Michelle Lynn. "An Electron Microscopy Investigation of Gold and Associated Minerals from Round Mountain, Nevada." Miami University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=miami1438354504.

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26

Wu, Mingjian. "Advanced transmission electron microscopy investigation of nano-clustering in Gd-doped GaN." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2014. http://dx.doi.org/10.18452/16950.

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Das zentrale Ziel der vorliegenden Arbeit besteht einerseits darin, die Verteilung von Gd in GaN:Gd mit Gd-Konzentrationen von 10^16–10^19 cm^-3 mittels fortgeschrittener (Raster-) Transmissionselektronenmikroskopie [(S)TEM] zu bestimmen. Darauf basierend wird zum anderen das Verständnis des Mechanismus, der diese Verteilungen bewirkt, entwickelt. Wir diskutieren detailliert die Anwendung und die Grenzen von (S)TEM-Abbildungsmethoden und quantitativen Analysenmethoden und von Modellierungsmethoden, um Nano-Cluster in epitaktischen Halbleiterschichten zu beobachten und zu analysieren. Außerdem
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27

Narangifard, Ali. "The multislice method in transmission electron microscopy simulation : An implementation in the TEM-simulator software package." Thesis, KTH, Skolan för teknik och hälsa (STH), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-134189.

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This report introduces the multislice method for modeling the interaction between an electron and the atoms in the specimen (electron-specimen interaction). The multislice method is an approximation to the full quantum mechanical model for this interaction. After introducing the theory, we discuss how the multislice method is implemented and integrated into TEM-simulator, a software for simulation of Transmission Electron Microscope (TEM) images.
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28

Rooney, Aidan. "Characterisation of buried interfaces in van der Waals materials by cross sectional scanning transmission electron microscopy." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/characterisation-of-buried-interfaces-in-van-der-waals-materials-by-cross-sectional-scanning-transmission-electron-microscopy(dd5565b9-1709-4d28-b4ce-9cd675fb36eb).html.

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Graphene and other two-dimensional materials can be stacked together to form vander Waals heterostructures: synthetic crystals composed of different atomically thin layers with a bespoke electronic band structure. Structural characterisation of vander Waals heterostructures is difficult using conventional methods as the properties are almost entirely defined by the nature of the buried interfaces between dissimilar crystals. These methods also fall short of resolving the atomic structure of buried defects in van der Waals materials such as graphite. This work demonstrates the refinement and su
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Ben, ammar Hichem. "Investigation of ternary ΑlΙnΝ and quaternary ΑlGaΙnΝ alloys for high electron mobility transistors by transmission electron microscopy". Thesis, Normandie, 2017. http://www.theses.fr/2017NORMC241/document.

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Les semi-conducteurs III-V à base d’azote et leurs alliages possèdent des propriétés remarquables et sont largement étudiés depuis les années 90. En comparaison à d'autres semi-conducteurs III-V, Les alliages de type ; AlGaN, InGaN et AlInN, ont leurs bandes interdites, directes, du lointain ultra-violet au proche infrarouge. Ainsi, ils sont appropriés pour de nombreuses applications dans des domaines tant civils que militaires tout en montrant de meilleures performances. De plus, l'alliage quaternaire AlGaInN montre des propriétés intéressantes car il peut être épitaxié soit avec un paramètre
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Berlin, Katja. "In-situ transmission electron microscopy on high-temperature phase transitions of Ge-Sb-Te alloys." Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19219.

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Das Hochtemperaturverhalten beeinflusst viele verschiedene Prozesse von der Materialherstellung bis hin zur technologischen Anwendung. In-situ Transmissionselektronenmikroskopie (TEM) bietet die Möglichkeit, die atomaren Prozesse während struktureller Phasenübergänge direkt und in Realzeit zu beobachten. In dieser Arbeit wurde in-situ TEM angewendet, um die Reversibilität des Schmelz- und Kristallisationsprozesses, sowie das anisotropen Sublimationsverhaltens von Ge-Sb-Te (GST) Dünnschichten zu untersuchen. Die gezielte Probenpräparation für die erfolgreiche Beobachtung der Hochtemperatur-Phas
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Melinte, Georgian. "Advanced 3D and in-situ TEM approaches applied to carbon-based and zeolitic nanomaterials." Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAE009/document.

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Dans le cadre de cette thèse, des techniques avancées de Microscopie électronique à transmission (MET)ont été utilisées dans le but de caractériser et de fabriquer de nouveaux nanomatériaux pour des applications dans les domaines de la nanoélectronique et de la catalyse. Trois types de matériaux fonctionnalisés sont étudiés: le graphène multifeuillets (FLG– Few-Layer Graphene) avec des nanomotifs,des nanotubes de carbone (CNTs - Carbon Nanotubes en anglais) et des zéolithes mésoporeux. La formation de nanomotifs de tranchées et de tunnels sur des flocons de FLG à l’aide de nanoparticules(NPs)
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Wätjen, Jörn Timo. "Microscopic Characterisation of Solar Cells : An Electron Microscopy Study of Cu(In,Ga)Se2 and Cu2ZnSn(S,Se)4 Solar Cells." Doctoral thesis, Uppsala universitet, Fasta tillståndets elektronik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-199432.

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The sun provides us with a surplus of energy convertible to electricity using solar cells. This thesis focuses on solar cells based on chalcopyrite (CIGSe) as well as kesterite (CZTS(e)) absorber layers. These materials yield record efficiencies of 20.4 % and 11.1 %, respectively. Especially for CZTS(e), the absorber layers often do not consist of one single desired phase but can exhibit areas with deviating material properties, referred to as secondary phases. Furthermore, several material layers are required for a working solar cell, each exhibiting interfaces. Even though secondary phases a
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Amaduci, Marcia Regina Lombardo. "Efeitos do campo eletromagnetico em celulas e bacterias." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259947.

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Orientador: Vitor Baranauskas<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação<br>Made available in DSpace on 2018-08-11T09:59:32Z (GMT). No. of bitstreams: 1 Amaduci_MarciaReginaLombardo_M.pdf: 2445338 bytes, checksum: 4bb1cb55957a33fb2a440282e189204d (MD5) Previous issue date: 2007<br>Resumo: Este trabalho refere-se a alguns efeitos de um campo eletromagnético aplicados em colônias bacterianas. A bactéria escolhida é bastante conhecida no mundo científico e tratase da Escherichia coli (E. coli). A parte experimental divide-se e
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Wang, Hao. "In-situ transmission electron microscopy investigation of deformation-induced microstructural evolution of a FeCoCrNiMn high-entropy alloy." Thesis, The University of Sydney, 2018. http://hdl.handle.net/2123/20068.

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High-entropy alloys (HEAs) are alloys with multiple (usually ≥5) principal elements. HEAs are attracting increasing interest because of their promising mechanical properties and phase stability, which can be used for various applications, such as high-speed cutting tools, anticorrosive high-strength parts in chemical plants and deep-sea exploration due to the excellent mechanical properties at cryogenic temperatures. Thorough understanding of the structural evolution during deformation of HEAs is a prerequisite for understanding and further improving their superior mechanical properties, which
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Park, Chun-sŏk. "Structural characterization of hard materials by transmission electron microscopy (TEM) : diamond-silicon carbide composites and yttria-stabilized zirconia /." May be available electronically:, 2008. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.

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Nováková, Kateřina. "Využitie slepej filtrácie obrazu pre snímky z TEM mikroskopov." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-377660.

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Předložená práce se zabývá problematikou slepé filtrace obrazů z transmisního elektronového mikroskopu. V úvodu práce je uveden popis transmisního elektronového mikroskopu. Navazující část popisuje mechanismy interakce elektronů se zkoumaným vzorkem a z toho vyplývající zobrazovací techniky elektronové mikroskopie. Poslední kapitola teoretické části práce zahrnuje popis vybraných metod slepé filtrace obrazu zejména s využitím dekompozice obrazu na charakteristické složky. Taktéž je zde uveden výčet metod pro zhodnocení úspěšnosti filtrace. V praktické části jsou popsány aplikované metody slepé
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Stuckner, Joshua Andrew. "Investigating the origin of localized plastic deformation in nanoporous gold by in situ electron microscopy and automatic structure quantification." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/100733.

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Gold gains many useful properties when it is formed into a nanoporous structure, but it also becomes macroscopically brittle due to flow localization and may therefore be unreliable for many applications. The goal of this work was to establish processing/structure/property relationships of nanoporous gold, discover controllable structure features, and understand the role of structure on flow localization. The nanoporous gold structure, consisting of a 3D network of nanoscale gold ligaments, was quantified with an automatic software developed for this work called AQUAMI, which uses computer vis
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Kylberg, Gustaf. "Automatic Virus Identification using TEM : Image Segmentation and Texture Analysis." Doctoral thesis, Uppsala universitet, Avdelningen för visuell information och interaktion, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-217328.

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Viruses and their morphology have been detected and studied with electron microscopy (EM) since the end of the 1930s. The technique has been vital for the discovery of new viruses and in establishing the virus taxonomy. Today, electron microscopy is an important technique in clinical diagnostics. It both serves as a routine diagnostic technique as well as an essential tool for detecting infectious agents in new and unusual disease outbreaks. The technique does not depend on virus specific targets and can therefore detect any virus present in the sample. New or reemerging viruses can be detecte
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39

Yoo, Kyung-Dong. "Two-dimensional dopant profiling for shallow junctions by TEM and AFM." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342122.

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40

Andersen, Ingrid Marie. "2D and 3D quantitative TEM mapping of CoNi nanowires." Thesis, Toulouse 3, 2020. http://www.theses.fr/2020TOU30205.

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Les nanofils magnétiques constituent un domaine de recherche en plein essor. De section cylindrique, ils permettent la propagation des parois de domaines magnétiques à très grandes vitesses et des interactions fortes avec les ondes de spin, ce qui les rend particulièrement intéressants pour le développement de futurs composants de la spintronique. L'objectif de ce travail de thèse est de fournir une analyse quantitative et qualitative complète de la configuration magnétique locale dans des nanofils magnétiques cylindriques d'alliage CoNi à anisotropie magnétocristalline perpendiculaire en util
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41

Lin, Hong. "Etude couplée par TEM/EELS et STM/STS des propriétés structurales et électroniques des nanotubes C et CNx." Paris 6, 2009. http://www.theses.fr/2009PA066494.

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Ce travail de thèse est dédié à l’étude couplée par TEM/EELS et STM/STS des propriétés structurales et électroniques des nanotubes de carbone purs et des nanotubes dopés à l’azote. Nous mettons d’abord en évidence le rôle des effets à N corps sur les spectres électroniques des tubes mesurés par STS et l’influence du substrat métallique. Ensuite nous présentons une étude systématique des fonctions d’ondes électroniques dans les tubes associées aux singularités de Van-Hove. Nous avons mis en évidence la brisure de symétrie de ces états qui est bien décrite par un modèle de liaisons fortes et qui
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42

Ikrényiová, Terézia. "Komplementární analýza prokaryotických buněk pomocí elektronové mikroskopie a Ramanovy spektroskopie." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2021. http://www.nusl.cz/ntk/nusl-445147.

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This master thesis deals with conventional methods of bacterial cell analysis, polyhydroxyalkanoates, Raman spectroscopy and electron microscopy in the theoretical part. The production of polyhydroxybutyrate by selected thermophilic bacteria and their analysis by gas chromatography, cryogenic scanning electron microscopy and Raman spectroscopy is described in the experimental part. The chosen sample was analyzed by a transmission electron microscope. Comparing the results from previous mentioned methods it was found that the bacteria Schlegelella thermodepolymerans accumulated the highest amou
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Cikánek, Martin. "Detekce biologických struktur ve snímcích z TEM mikroskopu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-400528.

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The aim of the first part of this thesis is to explain the theoretical basis of transmission electron microscopy and to mention fundamental parts of transmission electron microscopes. The next part of this work is focused on possible methods of image segmentation, the use of neural networks in the detection of objects in an image and the subsequent clustering of results. The theoretical part of the thesis is concluded with an explanation of some already published methods of automatic detection of biological structures in microscopic images and theoretical design of the algorithm, which will be
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44

Berthier, Rémy. "Development of characterization methods for in situ annealing and biasing of semiconductor devices in the TEM." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAY014/document.

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Dans cette thèse, nous abordons les défis rencontrés lors de la caractérisation des mémoires non volatiles par microscopie en transmission in situ. Les innovations récentes menées sur les porte-objets de TEM in situ basés sur l'utilisation de puces en silicium apportent de grands avantages comparée aux précédents modèles. Cependant, cette technique reste complexe et les expériences de MET in situ sont difficiles à mener à terme. Ce manuscrit tente d'apporter de nouvelles solutions pour permettre l'observation à l'échelle atomique pendant le recuit, ou la polarisation d'un échantillon dans le M
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45

Motylenko, Mykhaylo. "Beitrag zur Analyse von Disklinationsstrukturen in plastisch verformten Metallen." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2011. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-67416.

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Gegenstand der Arbeit ist die Analyse der bei hohen Verformungsgraden in Werkstoffen durch kollektive Bewegung der Versetzungen entstandenen neuen Defektkonfigurationen, die auf der mesoskopischen Skala agieren. Diese so genannte Disklinationen rufen neben starken Gitterdehnungen auch erhebliche lokale Gitterrotationen hervor. Es wurde der Nachweis der Existenz der Disklinationen in plastisch verformten Kristallen geliefert sowie die qualitative und quantitative Analyse der Disklinationskonfigurationen und der Disklinationsstärke durchgeführt. Die Untersuchungen an stark verformten Ein- und
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46

Haddad, Farah. "Transmission electron microscopy study of low-temperature silicon epitaxy by plasma enhanced chemical vapor deposition." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLX107/document.

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Cette thèse s’intéresse à la croissance épitaxiale à basse température (~200°C) des couches minces de silicium par dépôt chimique en phase vapeur assisté par plasma (PECVD), pour des applications aux cellules solaires. L’objectif de départ était de mieux comprendre cette croissance épitaxiale, en utilisant la microscopie électronique en transmission (MET) comme principal outil expérimental. D’abord, nous avons étudié les premiers stades de cette croissance épitaxiale en chimie SiF4/H2/Ar, en menant une série de dépôts courts – quelques dizaines jusqu’à quelques centaines de secondes – sur diff
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47

Nemavhulani, Shonisani. "Bacteriophage diversity in haloalkaline environments." University of the Western Cape, 2013. http://hdl.handle.net/11394/4313.

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>Magister Scientiae - MSc<br>There are limited reports on virus population in haloalkaline environments; therefore the aim of this study was to investigate the genetic diversity and biology of bacteriophage communities in these environments. Bacteria were isolated to be used as phage hosts. One bacterium from Lake Magadi and four bacteria from Lake Shala were successfully isolated from sediment samples. A further two Lake Shala bacterial hosts from the IMBM culture collection were also used to isolate bacteriophages. Bacterial isolates were identified to be most closely related to Bacil
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48

Stempinski, Erin S. "SYN3 in Chloroplasts of Arabidopsis thaliana: Effects of Knockdown and Overexpression and Localization Techniques." Miami University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=miami1376057385.

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49

Polcer, Simon. "Detekce a rozměření elektronového svazku v obrazech z TEM." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-413022.

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This diploma thesis deals with automatic detection and measurement of the electron beam in the images from a transmission electron microscope (TEM). The introduction provides a description of the construction and the main parts of the electron microscope. In the theoretical part, there are summarized modes of illumination from the fluorescent screen. Machine learning, specifically convolution neural network U-Net is used for automatic detection of the electron beam in the image. The measurement of the beam is based on ellipse approximation, which defines the size and dimension of the beam. Neu
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Shipkova, I. G., V. S. Chumak, M. V. Reshetnyak, A. Y. Devizenko, and Y. P. Pershyn. "Estimation of interlayer composition in WC/Si multilayer X-ray mirrors (MXMs) at nanometer scale." Thesis, НТУ "ХПІ", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/28180.

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