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Dissertations / Theses on the topic 'Raster electron microscopy method'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Куцомеля, Юлія Юріївна, Юлия Юрьевна Куцомеля, Yuliia Yuriivna Kutsomelia, О. П. Чейлях та А. С. Сіухін. "Елементний склад і морфологія поверхні покриття, отриманого методом імпульсно-плазмової обробки". Thesis, Сумський державний університет, 2017. http://essuir.sumdu.edu.ua/handle/123456789/66598.

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Можливість використання електродів з різних матеріалів та відносна простота отримання покриття метолом імпульсно-плазмової обробки (ІПО) є неабиякою перевагою розробленого способу. Установити залежність утворених розмірів шару і структури від режимів ІПО і матеріалу підкладки, що служить основою для створення нових покриттів в конструкційних сталях дозволяють дослідження структурно змінених шарів.

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2

Dudkiewicz, A. D. "Measurement of engineered nanoparticles in foods : electron microscopy method development and validation." Thesis, University of York, 2014. http://etheses.whiterose.ac.uk/6584/.

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The increasing interest in use of nanotechnology by the food industry brought concerns over safety of engineered nanoparticle application in the foods and food contact materials. To aid the risk assessment in 2010 a project NanoLyse was funded by the European Union under Framework Programme 7. The project was focused on the development and validation of methods for analysing engineered nanoparticles in food matrices. The research presented in this thesis was a part of NanoLyse and was concerned with electron microscopy methods. The aim of this research was optimization of sample preparation pr

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3

Mousavi-Kamazani, M., and M. Salavati-Niasari. "Preparation of Stochiometric Cu2S Nanoparticles by Ultrasonic Method." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35086.

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This study reports on the synthesis of Cu2S nanoparticles via an ultrasonic method by employing Na2SO3 as a reducing agent This method is novel, simple and can be easily controlled. Effects of power and time of sonication were investigated. Morphology, structure, and composition of the obtained products were characterized by X-ray diffraction (XRD), energy dispersive X-ray analysis (EDX), scanning electron microscope (SEM) and photoluminescence (PL) spectroscopy. The effects of time and power of irradiation were studied. XRD calculations show that the average crystallite diameter of Cu2S

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4

George, Andrew R. "A new spectroscopic method for the non-destructive characterization of weathering damage in plastics /." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1605.pdf.

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5

Mitin, Dmitriy. "Advanced scanning magnetoresistive microscopy as a multifunctional magnetic characterization method." Doctoral thesis, Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-224986.

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Advanced scanning magnetoresistive microscopy (SMRM) — a robust magnetic imaging and probing technique — is presented. It utilizes conventional recording heads of a hard disk drive as sensors. The spatial resolution of modern tunneling magnetoresistive sensors is nowadays comparable with more commonly used magnetic force microscopes. Important advantages of SMRM are the ability to detect pure magnetic signals directly proportional to the out-of-plane magnetic stray field, negligible sensor stray fields, and the ability to apply local bipolar magnetic field pulses up to 10 kOe with bandwidths

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6

Prokopchuk, N. R., Zh S. Shashok, K. V. Vishnevskii, and D. V. Prishchepenko. "Formation of Chitosan Nanofibers by Electrospinning Method." Thesis, Sumy State University, 2015. http://essuir.sumdu.edu.ua/handle/123456789/42652.

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The paper presents the results of the preparation of the nanofiber coatings from chitosan biopolymer by electro-spinning. Structure and uniformity distribution of the fibers in the resulting coatings are investigated by a scanning electron microscope JEOL JSM-5610 LV. The optimum concentration of the chitosan solution in the mold, which provide forming nanofibers with fewer defects, was determinated. The obtained data are used for the development of the technology for production of hemostatic and wound-healing dressings for medical purposes in order to organize their production at OJSC "Miner

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7

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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8

Parlanti, Paola. "Neurodegenerative disorders: overcoming single-method limits through the application of a new correlative imaging approach." Doctoral thesis, Scuola Normale Superiore, 2018. http://hdl.handle.net/11384/85907.

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9

Agioutanti, Eleftheria. "An Improved Thermogravimetric Analysis Method for Respirable Coal Mine Dust and Comparison to Results by SEM-EDX." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/91984.

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It has long been known that chronic exposures to high concentrations of respirable coal mine dust can lead to the development of lung diseases such as Coal Worker's Pneumoconiosis, commonly referred to as "black lung", and silicosis. Since the mid-1990s, an alarming resurgence of diseases has been documented in central Appalachia, where underground mining often necessitates significant extraction of rock strata along with the thin seams of coal. These circumstances have prompted concern over if or how changing dust composition might be a factor in contemporary disease prevalence. Until now, t

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10

Khoshouei, Maryam [Verfasser], Wolfgang [Akademischer Betreuer] Baumeister, Martin [Gutachter] Zacharias, and Wolfgang [Gutachter] Baumeister. "Development and applications of a phase contrast method for cryo-electron microscopy / Maryam Khoshouei ; Gutachter: Martin Zacharias, Wolfgang Baumeister ; Betreuer: Wolfgang Baumeister." München : Universitätsbibliothek der TU München, 2018. http://d-nb.info/1200547519/34.

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11

Nagavelli, Sai Krishnanand. "Improve Nano-Cube Detection Performance Using A Method of Separate Training of Sample Subsets." Youngstown State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1485267005121308.

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12

Velic, Amar. "Mechanics of bacterial interaction and geometry enhancement on nanopatterned surfaces." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/212531/1/Amar_Velic_Thesis.pdf.

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This thesis investigated the deformation and resulting antibacterial activity of bacteria on nanopatterned surfaces, to understand how these surfaces elicit their physical killing action and how they can be optimised. Through finite element and experimental investigation, it was demonstrated that nanopatterned surfaces kill bacteria at their tips by delivering lethal deformation which can be enhanced by reducing key nanopattern dimensions. The findings help towards the development of a new generation antimicrobial materials to combat biofilm infection, fomite transmission and emerging resistan

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Das, P. K. "Magnetic investigations of urban pollution at Mumbai and Nashik, Maharashtra, India: Mineral magnetic method as a pollution proxy." Thesis, Indian Institute of Geomagnetism, Mumbai, 2014. http://localhost:8080/xmlui/handle/123456789/224.

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A thesis submitted to the University of Mumbai for the Ph.D. (Science) degree in Physics under the guidance of Prof. Nathani Basavaiah.<br>Brief of Conclusion : Environmental pollution due to anthropogenic sources of vehicular exhausts and industrial emissions is rapidly becoming a critical issue of public concern worldwide. Industrialization, urbanization, population growth and associated increase in energy demands have resulted in a profound deterioration of environmental quality in urban India. Specifically, burning of fossil fuels in industries and transport sector has led to increase in

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14

SOARES, MARIA da C. B. V. "Influencia das tensoes residuais no comportamento em fadiga e fratura de ligas metalicas." reponame:Repositório Institucional do IPEN, 1998. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10668.

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Made available in DSpace on 2014-10-09T12:42:53Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:07:50Z (GMT). No. of bitstreams: 1 06122.pdf: 7934596 bytes, checksum: 1f20a90fa19d579c7465dc1ddb614d44 (MD5)<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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15

Подуремне, Д. В., О. В. Мельничук, А. В. Швидченко, Сергій Ігорович Воробйов, Сергей Игоревич Воробьев та Serhii Ihorovych Vorobiov. "Альтернативна методика формування високоентропійних сплавів та їх термо- і магніторезистивні властивості". Thesis, Сумський державний університет, 2017. http://essuir.sumdu.edu.ua/handle/123456789/64617.

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В останнє десятиліття проводяться інтенсивні дослідження кристалічної структури і механічних властивостей нового класу матеріалів – високоентропійних сплавів (ВЕС). Так, ВЕСи, маючи в своєму складі елементи з різною кристалічною структурою, валентністю і електронегативністю, кристалізуються переважно з утворенням твердих розчинів (т.р.) заміщення на основі ОЦК- або ГЦКфаз, що пов’язано з високою конфігураційною ентропією змішування (ΔSзм > 11 Дж/моль∙K). Складна структура на макроскопічному і атомному рівнях може призвести до появи широкого спектру нових, унікальних з точки зору практичного ви

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de, Jongh Leigh-Anne. "The molecular precursor approach to control the morphology of Co₃O₄ on support materials." Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/2539.

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In this project, the TMP method was employed to produce “active sites.” These active sites are for influencing and controlling the Co₃O₄ growth. One of the aims was to investigate what effect the grafting of the molecular precursor has on the nature and distribution of active sites on the various support materials. The second aim was to investigate the effect an increase in molecular precursor loading, in various impregnation steps, has on the nature and distribution of the active sites. The third aim was to investigate the effect of the steric constraints of ligand groups, by changing the mol

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17

Gallet, julien. "Towards an automated dislocation density measurement in the SEM : Benefits and limits of the R-ECCI method." Electronic Thesis or Diss., Lyon, INSA, 2023. http://www.theses.fr/2023ISAL0017.

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Afin de prédire le comportement mécanique des matériaux métalliques, il est important de déterminer plusieurs quantités physiques, dont la densité de dislocation qui a un impact majeur sur les propriétés mécaniques. Des travaux récents ont montré qu’il est possible de réaliser ces observations à l’aide d’un microscope électronique à balayage. En effet, cette méthode a l’avantage d’être appliquée sur des échantillons massifs et de permettre l’observation de plus grandes surfaces. Cependant, une étape d’orientation de l’échantillon est nécessaire, et le traitement de l’image est réalisé manuelle

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Vellame, Igor Alencar 1984. "Traços de íons em apatita = ataque químico, tratamento térmico e modelagem." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/277143.

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Orientadores: Sandro Guedes de Oliveira, Julio Cesar Hadler Neto<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Física Gleb Wataghin<br>Made available in DSpace on 2018-08-21T04:43:57Z (GMT). No. of bitstreams: 1 Vellame_IgorAlencar_D.pdf: 6307121 bytes, checksum: 509c7cc3c5c11f238463340fa191af50 (MD5) Previous issue date: 2012<br>Resumo: O presente trabalho pode ser inserido na grande área de estudo da interação da radiação com sólidos. Ele tem como principal objetivo entender a cinética de reconstituição dos danos causados por irradiação com íons ( traço latente) na

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19

Šimík, Marcel. "Specifika nastavení řešiče v systému Ansys Fluent pro nízké tlaky v EREM." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-319633.

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This thesis is focused on electron microscopy which issue is discussed at the beginning of work. The main attention is dedicated to the Environmental electron microscope, especially the differentially pumped chamber, which the thesis deals with. There is a production of an experimental chamber for analysis of shock waves on going therefore main goal of this thesis was to analyze the flow pattern in this chamber. Using the Ansys Fluent program, simulations of the characteristic flow that arises from the pumping of the vacuum chambers namely the ultrasonic flow at low pressures on which the most

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20

Mendorf, Christina. "Ortsaufgelöste Charakterisierung von Entmischungsphänomenen in Ga_xIn_1-xAs_yP_1-y-Halbleiter-Heteroschichten im Raster-Transmissionselektronenmikroskop - Spatial resolved characterisation of decomposition in Ga_xIn_1-xAs_yP_1-y-semiconductor hetero structures by scanning transmission electron microscopy." Gerhard-Mercator-Universitaet Duisburg, 2002. http://www.ub.uni-duisburg.de/ETD-db/theses/available/duett-05222002-093828/.

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The use of the quaternary semiconductor alloy Ga<sub>x</sub>In<sub>1-x</sub>As<sub>y</sub>P<sub>1-y</sub> for the development of new electronic, optoelectronic or high speed microwave devices is of great technological interest e.g. in telecommunication. Under certain manufacturing conditions unwanted variations in the chemical composition of these materials can occur, which can be attributed to the existence of a miscibility gap. These decomposition phenomena occur within the nanometer and subnanometer scale. Therefore it is necessary to use characterisation methods of high sensitivity and at

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SANTOS, ROBINSON A. dos. "Estudo da influência de impurezas e da qualidade das superfícies em cristais de brometo de tálio para aplicação como um detector de radiação." reponame:Repositório Institucional do IPEN, 2016. http://repositorio.ipen.br:8080/xmlui/handle/123456789/26818.

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Submitted by Claudinei Pracidelli (cpracide@ipen.br) on 2016-11-11T13:09:25Z No. of bitstreams: 0<br>Made available in DSpace on 2016-11-11T13:09:25Z (GMT). No. of bitstreams: 0<br>Neste trabalho, cristais de TlBr foram crescidos e purificados pelo método de Bridgman Repetido, a partir de sais comerciais de TlBr, e caracterizados para serem usados como detectores de radiação à temperatura ambiente. Para avaliar a eficiência de purificação, estudos da diminuição da concentração de impurezas foram feitos após cada crescimento, analisando as impurezas traço por Espectrometria de Massas com Plasm

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22

Sarvari, Hojjatollah. "FABRICATION AND CHARACTERIZATION OF ORGANIC-INORGANIC HYBRID PEROVSKITE SOLAR CELLS." UKnowledge, 2018. https://uknowledge.uky.edu/ece_etds/123.

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Solar energy as the most abundant source of energy is clean, non-pollutant, and completely renewable, which provides energy security, independence, and reliability. Organic-inorganic hybrid perovskite solar cells (PSCs) revolutionized the photovoltaics field not only by showing high efficiency of above 22% in just a few years but also by providing cheap and facile fabrication methods. In this dissertation, fabrication of PSCs in both ambient air conditions and environmentally controlled N2-filled glove-box are studied. Several characterization methods such as SEM, XRD, EDS, Profilometry, four-

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23

Poruban, Milan. "Analýza proudění plynů při čerpání vakua pro nově navržený scintilační detektor." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220571.

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The aim of this thesis is to study the issue of eniveromental scanning electron microscopy and pumping gas to create vacuum in the newly designed scintillation detector. Further, creating a model of recently proposed scintillation detector and simulating and analyzing pumping gas in differentially pumped chamber of detector. The theoretical part deals with electron microscopy, electron sources, electron optics and secondary electrons detectors. It is also presented which signals are generated by the electron beam on the surface of a solid. Further fluid flow issues and equations describing the

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Kryll, Josef. "Analýza vlivu rozměrů čerpacích kanálů při konstrukci nové verze scintilačního detektoru." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-254465.

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The aim of this thesis is to study the issue of eniveromental scanning electron microscopy and pumping gas to create a vacuum in the newly designed scintillation detector. Further, creating a model of recently proposed scintillation detector and simulating and analyzing pumping gas in differentially pumped chamber of detector and the results compare with the previous model. The theoretical part deals with electron microscopy, electron sources, electron optics and secondary electrons detectors. It is also presented which signals are generated by the electron beam on the surface of a solid. Furt

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Tomášek, Martin. "Analýza rozložení tlaků ve variantě detektoru SE se třemi clonkami pomocí systému CAE." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219492.

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This master`s thesis analyzes the pressure distribution on the premises of scintillation detector secondary electron in the variant with three aperture. The aim of this study is analyzing the fluid flow depending on the application of the third aperture in the entrance of the detector, thus creating more self-pumped chamber, which is responsible for ensuring a better distribution of pressure in the premises of the detector. The result of the analysis would be determining how to change parameters within the detector. If it is found that application of the third aperture has a positive effect on

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Anjum, Taseer. "Nanomechanics : mechanical response analysis of semiconductor GaAs nanowires by using finite element method and x-ray diffraction techniques." Electronic Thesis or Diss., Aix-Marseille, 2021. http://www.theses.fr/2021AIXM0173.

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Au cours des deux dernières décennies, d’énormes progrès ont été réalisés dans la miniaturisation des dispositifs optoélectroniques et des systèmes nanoélectromécaniques à base de capteurs grâce à l'intégration de nanofils quasi unidimensionnels. Le présent travail porte sur l'analyse de la réponse mécanique de nanofils GaAs semi-conducteurs préparés sur un substrat de silicium par épitaxie par jet moléculaire. Le comportement mécanique du nanofil est caractérisé par des essais de flexion in situ dans un MEB et en combinaison avec la diffraction des rayons X. L'objectif de ce travail est d'ide

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OLIVEIRA, ICIMONE B. de. "Desenvolvimento do cristal semicondutor de brometo de tálio para aplicações como detector de radiação e fotodetector." reponame:Repositório Institucional do IPEN, 2006. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11385.

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Berling, Holm Katarina. "The Chorda Tympani Nerve : Role in Taste Impairment in Middle Ear Disease and after Ear Surgery." Doctoral thesis, Uppsala universitet, Centrum för klinisk forskning, Västerås, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-316591.

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The chorda tympani nerve, also known as the taste nerve, runs uncovered through the middle ear cavity, a localization that exposes the nerve to pathological processes and surgical trauma in the middle ear. People operated on for otosclerosis tend to complain more about postoperative taste disturbances than those operated on for chronic otitis media. It has been suggested that this difference may be explained by gradual deterioration of chorda tympani nerve function caused by chronic otitis media infection and that further impairment caused by surgery is less noticeable in these patients. This

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Goutenoire, François. "Etude d'oxydes et d'oxycarbonates de thallium, à structure dérivées de la pérovskite et NaCl, les cuprates supraconducteurs et thallates de calcium." Caen, 1995. http://www.theses.fr/1995CAEN2035.

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Nous avons étudié trois familles d'oxydes et d'oxycarbonates à base de thallium, pour comprendre les mécanismes structuraux qui gouvernent la stabilisation des couches t1o au sein des supraconducteurs à haute température critique. Ces études ont été menées par diffraction de rayons x, de neutrons, diffraction électronique et microcopie électronique. Un premier groupe de composés concerne la substitution thallium-mercure au sein des couches AO. Une premiere famille correspond aux composés T1#2HgBa#4#-#XSR#xCu#2o#1#0#+#, l'intercroissance de 2201(t1) et 1201(Hg). Dans ces composés deux types de

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Cristofari, François. "Etude du comportement et de la résistance mécanique d'un pancréas bioartificiel pour l'homme. Caractérisation expérimentale et simulation numérique." Thesis, Paris, ENSAM, 2017. http://www.theses.fr/2017ENAM0055.

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Afin de traiter les patients atteint de diabète de type 1, un pancréas bioartificiel permettant d’encapsuler des cellules produisant de l’insuline a été développé : il est constitué de membranes poreuses qui les isolent des anticorps du patient, tout en permettant le passage du glucose et de l’insuline. Avant sa mise sur le marché, il est nécessaire de vérifier que son comportement mécanique lui permet d’être implanté chez l’homme sans risque pour le patient. La résistance des membranes sous chargement mécanique est donc étudiée en particulier. Leur structure est d’abord mise en évidence par m

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MAEDA, NANCY T. "Avaliação da neoformação óssea em tíbia de coelhos utilizando cúpula de hidroxiapatita associada a diferentes biomateriais." reponame:Repositório Institucional do IPEN, 2013. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10542.

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Made available in DSpace on 2014-10-09T12:41:41Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:07:15Z (GMT). No. of bitstreams: 0<br>Dissertação (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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Vyhlídal, Michal. "Porušování vybraných stavebních kompozitů v blízkosti rozhraní plniva a matrice." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-372021.

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The interface between aggregate grains and matrix in cementitious composites is their weakest element. The topic is particularly significant in the case of high performance and high strength concrete technology for which the eliminination or reduction of these weak links are necessary. The aim of this thesis is to determine the influence of the interface on the fracture behaviour of the cementitious composites. The fracture experiments were performed for this purpose and were complemented by the nanoindentation’s results and scanning electron microscopy results. Numerical model was created in

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Laurent, Véronique. "Mouillabilité et réactivité dans les systèmes composites métal/céramique : étude du couple Al/SiC." Grenoble INPG, 1988. http://www.theses.fr/1988INPG0115.

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Etude experimentale du mouillage par la methode de la goutte posee et par une methode tensiometrique d'immersion-emersion. Analyse chimique et structurale des interfaces par spectrometrie auger, microsonde, microscopie electronique a balayage et en transmission. Influence de la temperature (973-1173k), de la composition de la phase metallique(additions de si, ti, cu et sn) et des traitements de surface de sic (recouvrement par des couches de silice ou carbure sur la cinetique de mouillage. Interpretation et generalisation des resultats par une approche thermodymique

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34

Janati, Idrissi Abderrazak. "Caractérisation physico-chimique des alumines par le concept d'objets fractals." Poitiers, 1988. http://www.theses.fr/1988POIT2305.

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Ambroise, Marc-Henri. "Etude de la nocivité d'inclusions superficielles : amorçage de fissures dans des superalliages préparés par métallurgie des poudres." Paris 13, 1986. http://www.theses.fr/1986PA132008.

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Etude de la nocivité d'inclusions de céramique sur le comportement mécanique des superalliages à base de nickel. Analyse des signes précurseurs de la fissuration, par une visualisation par méthode de moire au microscope électronique en balayage, des déplacements autour des inclusions. Rôle de certains paramètres dans l'amorcage de fissures à l'interface matrice/inclusion

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36

Kirmse, Holm. "Transmissionselektronenmikroskopische Untersuchungen von II-VI-Verbindungshalbleitern unterschiedlicher Dimensionierung." Doctoral thesis, [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=962717835.

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Kadri, Abdelaziz. "Etude electrochimique des processus de corrosion d'un alliage fe-36 ni sous des couches minces d'elecrolyte, a l'air libre ou en situation de confinement." Paris 6, 1986. http://www.theses.fr/1986PA066211.

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Etude du mecanisme de corrosion localisee observee sur les alliages fe-36ni et intervenant lors de leur stockage par empilement de feuilles destinees a la fabrication de supports de circuits integres. Utilisation d'une cellule de simulation ou l'epaisseur de l'electrolyte est maintenue a une tres faible valeur ( <ou= 100 mu m). Determination des caracteristiques electrochimiques passives-actives de l'alliage. Description du comportement electrochimique de l'interface alliag noneelectrolyte. Proposition d'un mecanisme traduisant qualitativement le processus de corrosion. Etude des conditions de

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Onelli, Olimpia Domitilla. "Complex photonic structures in nature : from order to disorder." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/273768.

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Structural colours arise from the interaction of visible light with nano-structured materials. The occurrence of such structures in nature has been known for over a century, but it is only in the last few decades that the study of natural photonic structures has fully matured due to the advances in imagining techniques and computational modelling. Even though a plethora of different colour-producing architectures in a variety of species has been investigated, a few significant questions are still open: how do these structures develop in living organisms? Does disorder play a functional role in

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Fichou, Denis. "L'interface oxyde de zinc/électrolyte : étude des processus primaires." Paris 6, 1986. http://www.theses.fr/1986PA066259.

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DORE, PETIT-MAIRE ISABELLE. "Utilisation des anticorps monoclonaux en virologie vegetale : diagnostic et etudes structurales de quelques tobamovirus." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13097.

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Etude des epitopes reconnus par 18 anticorps monoclonaux diriges contre la proteine de l'enveloppe du virus de la mosaique du tabac, en mesurant leur reactivite vis-a-vis de differents mutants, virus et peptides synthetiques. Visualisation de la liaison entre anticorps monoclonaux et virus par microscopie electronique, dans differents tests elisa. Preparation d'anticorps monoclonaux permettant la detection du virus des taches annulaires de l'odontoglossum et du virus de la mosaique de la tomate

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Jaouen, Christiane. "Etude des mécanismes des transformations de phase induites par irradiation aux ions dans les systèmes métalliques." Poitiers, 1987. http://www.theses.fr/1987POIT2019.

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Etude par mesure de conductivite electrique, par retrodiffusion rutherford et par microscopie ionique en transmission des differents aspects du melange ionique dans le systeme mt/al (mt=fe, co, ni) et fe-mg. Analyse des differents facteurs controlant la formation d'une phase et celle d'une phase amorphe. Analyse des mecanismes de transformation cristal-amorphe de l'alliage ni::(50)al::(50) en couche mince. Influence des parametres d'irradation sur cette transformation

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Mitin, Dmitriy. "Advanced scanning magnetoresistive microscopy as a multifunctional magnetic characterization method." Doctoral thesis, 2016. https://monarch.qucosa.de/id/qucosa%3A20700.

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Advanced scanning magnetoresistive microscopy (SMRM) — a robust magnetic imaging and probing technique — is presented. It utilizes conventional recording heads of a hard disk drive as sensors. The spatial resolution of modern tunneling magnetoresistive sensors is nowadays comparable with more commonly used magnetic force microscopes. Important advantages of SMRM are the ability to detect pure magnetic signals directly proportional to the out-of-plane magnetic stray field, negligible sensor stray fields, and the ability to apply local bipolar magnetic field pulses up to 10 kOe with bandwidths

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"Development of a single-particle tracking microrheometry method by incorporating magnetic tweezer to total internal reflection microscope." Thesis, 2011. http://library.cuhk.edu.hk/record=b6075385.

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Gong, Xiangjun = 基於磁鑷和全反射顯微鏡的單粒子追踪微流變方法 / 龔湘君.<br>Thesis (Ph.D.)--Chinese University of Hong Kong, 2011.<br>Includes bibliographical references.<br>Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web.<br>Abstract also in Chinese.<br>Gong, Xiangjun = Ji yu ci nie he quan fan she xian wei jing de dan li zi zhui zong wei liu bian fang fa / Gong Xiangjun.

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Woodward, Jeffrey. "Development of InGaN quantum dots by the Stranski-Krastanov method and droplet heteroepitaxy." Thesis, 2017. https://hdl.handle.net/2144/20851.

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The development of InGaN quantum dots (QDs) is both scientiﬁcally challenging and promising for applications in visible spectrum LEDs, lasers, detectors, electroabsorption modulators and photovoltaics. Such QDs are typically grown using the Stranski-Krastanov (SK) growth mode, in which accumulated in-plane compressive strain induces a transition from 2D to 3D growth. This method has a number of inherent limitations, including the unavoidable formation of a 2D wetting layer and the diﬃculty of controlling the composition, areal density, and size of the dots. In this research, I have developed I

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"Investigation into a Laser Welded Interconnection Method for Interdigitated Back-Contact(IBC) Solar Cell Modules." Master's thesis, 2019. http://hdl.handle.net/2286/R.I.55495.

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abstract: Interconnection methods for IBC photovoltaic (PV) module integration have widely been explored yet a concrete and cost-effective solution has yet to be found. Traditional methods of tabbing and stringing which are still being used today impart increased stress on the cells, not to mention the high temperatures induced during the soldering process as well. In this work and effective and economical interconnection method is demonstrated, by laser welding an embossed aluminum (Al) electrode layer to screen-printed silver (Ag) on the solar cell. Contact resistivity below 1mΩ.cm2 is meas

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Mohale, Given Terrance Mpho. "SEM image processing as an alternative method to determine chromite pre-reduction / Given Terrance Mpho Mohale." Thesis, 2015. http://hdl.handle.net/10394/15423.

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Ferrochrome (FeCr) is a crude alloy containing chromium (Cr) and iron (Fe). FeCr is mainly used for the production of stainless steel, which is an important modern-day alloy. FeCr is produced from chromite ore through various smelting methods. In this study, the focus was on the pelletised chromite pre-reduction process, which is also referred to as the solid state reduction of chromite. In this process, fine chromite ore, a clay binder and a carbon reductant are dry milled, agglomerated (pelletised) and pre-reduced (solid state reduction) in a rotary kiln. The pre-reduced pellets are then cha

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Colen, Manaka Mmakgabo. "Synthesis and characterization of long persistent phosphors using combustion method." Diss., 2015. http://hdl.handle.net/10500/20709.

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In this work, alkaline earth aluminate phosphors doped with rare-earth ions and manganese were synthesized using combustion method. Several characterization techniques were used to study the structural and luminescent properties of the as-synthesized phosphors, namely X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), X-ray energy Dispersive Spectroscopy (EDS), Ultraviolet-Visible (UV-Vis) Spectroscopy, Photoluminescence (PL), and Thermoluminescence (TL). The structural properties were studied by collecting the XRD patterns of the samples using an X'Pert PRO PANalytical diffrac

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Huang, Song-Lang, and 黃松嵐. "Analyzed composition of urolith in dogs and cats by different methods (scanning electron microscopy – energy dispersive spectrometer and Minnesota Urolith Center method) and comparedits difference results with two methods." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/ugd65t.

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Kheswa, Ntombizonke Yvonne. "Synthesis and characterisation of 114Cd targets." Thesis, 2011. http://hdl.handle.net/11394/3681.

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>Magister Scientiae - MSc<br>To study nuclear reactions and nuclear structures, target materials are bombarded with high-energy particles. The target material can either be in a form of a metal film or gas. A target material designed to study certain nuclear reactions or to produce nuclei to study their structure should yield as minimum as possible of competing reactions under ion bombardment. This requires a chemically and isotopically pure target material prepared as a self supporting thin film, or as alternative, prepared on a thin career foil. Additional requirement for lifetime measuremen

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Dale, Ashley S. "Developing an approach to improve beta-phase properties in ferroelectric pvd-hfp thin films." Thesis, 2020. http://hdl.handle.net/1805/22686.

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Indiana University-Purdue University Indianapolis (IUPUI)<br>Improved fabrication of poly(vinylindenefluoride)-hexafluoropropylene (PVDF-HFP) thin films is of particular interest due to the high electric coercivity found in the beta-phase structure of the thin film. We show that it is possible to obtain high-quality, beta-phase dominant PVDF-HFP thin films using a direct approach to Langmuir-Blodgett deposition without the use of annealing or additives. To improve sample quality, an automated Langmuir-Blodgett thin film deposition system was developed; a custom dipping trough was fabricated, a

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