Relevant bibliographies by topics / Light optical microscopy (LOM) / Dissertations / Theses
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Dissertations / Theses on the topic 'Light optical microscopy (LOM)'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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1

Li, Xiao. "Conservative and non-conservative optical forces." HKBU Institutional Repository, 2017. https://repository.hkbu.edu.hk/etd_oa/400.

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The fact that optical force is very significant in the microscopic world and can be used to manipulate microparticles has triggered an evolution in micromanipulation, in particular, the manipulation of biological species and colloidal particles. The induced optical force can easily be more than 103 times of the particle's weight. The particle size that are accessible to optical forces ranges from tens of nanometers to hundreds of micrometers. One of the most well-known tools in optical manipulation is called optical tweezers, which is, in essence, performing optical trapping by a strongly focu
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2

Yeatman, Eric Morgan. "Surface plasmon applications : microscopy and spatial light modulation." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/47722.

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3

Krzewina, Leo G. "Structured light for three-dimensional microscopy." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001515.

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4

Santa, Nestor. "Demonstration of Optical Microscopy and Image Processing to Classify Respirable Coal Mine Dust Particles." Thesis, Virginia Tech, 2021. http://hdl.handle.net/10919/103919.

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Inhalation of respirable coal mine dust (RCMD) can lead to chronic lung diseases, including coal worker’s pneumoconiosis (CWP) and more severe forms such as progressive massive fibrosis. After the Federal Coal Mine Health and Safety Act was passed in 1969, limits on exposure to respirable dust were set, and the prevalence of CWP abruptly decreased. However, during the last two decades, a resurgence of the disease has been reported. Many authors have argued that the increasing numbers might be related to mining practices, including the extraction of thinner coal seams, characteristics of the mi
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Yu, Enhua. "Crossed and uncrossed retinal fibres in normal and monocular hamsters : light and electron microscopic studies /." [Hong Kong : University of Hong Kong], 1990. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13014316.

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6

Fedosseev, Roman. "High resolution imaging and optical sectioning by Harmonic Excitation Light Microscopy combined with deconvolution /." Zürich : ETH, 2006. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=16691.

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7

于恩華 and Enhua Yu. "Crossed and uncrossed retinal fibres in normal and monocular hamsters: light and electron microscopic studies." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1990. http://hub.hku.hk/bib/B31232449.

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8

Garrido, Charles Aida. "Optical control of endogenous receptors and cellular excitability with light." Doctoral thesis, Universitat de Barcelona, 2020. http://hdl.handle.net/10803/668383.

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Light-controlled manipulation of neuronal activity has transformed the field of neurobiology. Light provides temporal and spatial resolution over activation or inhibition of targeted populations of neurons, one single neuron or single synapses. Such precision could be achieved with optogenetics, which is based on the over-expression of light-sensitive proteins, but it requires gene therapy and often alters cellular physiology. An alternative to optogenetics is offered by photopharmacology (the development of light-regulated drugs or photoswitches), which can operate on endogenous receptors wit
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Mignard-Debise, Lois. "Tools for the paraxial optical design of light field imaging systems." Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0009/document.

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L'imagerie plénoptique est souvent présentée comme une révolution par rapport à l'imagerie standard. En effet, elle apporte plus de contrôle à l'utilisateur sur l'image finale puisque les dimensions spatiales et angulaires du champ de lumière offrent la possibilité de changer le point de vue ou de refaire la mise au point après coup ainsi que de calculer la carte de profondeur de la scène. Cependant, cela complique le travail du concepteur optique du système pour deux raisons. La première est qu'il existe une multitude d'appareils de capture plénoptique différents, chacun avec sa propre spécif
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Nylk, Jonathan. "Advanced light-sheet and structured illumination microscopy techniques for neuroscience and disease diagnosis." Thesis, University of St Andrews, 2016. http://hdl.handle.net/10023/10842.

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Optical microscopy is a cornerstone of biomedical research. Advances in optical techniques enable specific, high resolution, sterile, and biologically compatible imaging. In particular, beam shaping has been used to tailor microscopy techniques to enhance microscope performance. The aim of this Thesis is to investigate the use of novel beam shaping techniques in emerging optical microscopy methods, and to apply these methods in biomedicine. To overcome the challenges associated with high resolution imaging of large specimens, the use of Airy beams and related techniques are applied to light-sh
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Cimalla, Peter, Theresa Werner, Kai Winkler, et al. "Imaging of nanoparticle-labeled stem cells using magnetomotive optical coherence tomography, laser speckle reflectometry, and light microscopy." SPIE, 2015. https://tud.qucosa.de/id/qucosa%3A35268.

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Cell transplantation and stem cell therapy are promising approaches for regenerative medicine and are of interest to researchers and clinicians worldwide. However, currently, no imaging technique that allows three-dimensional in vivo inspection of therapeutically administered cells in host tissues is available. Therefore, we investigate magnetomotive optical coherence tomography (MM-OCT) of cells labeled with magnetic particles as a potential noninvasive cell tracking method. We develop magnetomotive imaging of mesenchymal stem cells for future cell therapy monitoring. Cells were labeled with
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12

Zhang, Han. "Superresolution Nonlinear Structured Illumination Microscopy By Stimulated Emission Depletion." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/338899.

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The understanding of the biological processes at the cellular and subcellular level requires the ability to directly visualize them. Fluorescence microscopy played a key role in biomedical imaging because of its high sensitivity and specificity. However, traditional fluorescence microscopy has a limited resolution due to optical diffraction. In recent years, various approaches have been developed to overcome the diffraction limit. Among these techniques, nonlinear structured illumination microscopy (SIM) has been demonstrated a fast and full field superresolution imaging tool, such as Saturate
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13

Pinos, Andrea. "Optical properties and degradation of deep ultraviolet AIGaN-based light-emitting diodes." Doctoral thesis, KTH, Fotonik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-37917.

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14

Jahr, Wiebke. "Spectrally resolved, three-dimensional widefield microscopy." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-225963.

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A major goal in biological imaging is to visualize interactions of different tissues, often fluorescently labeled, during dynamic processes. Only a few of these labels fit into the available spectral range without overlap, but can be separated computationally if the full spectrum of every single pixel is known. In medical imaging, hyperspectral techniques show promise to identify different tissue types without any staining. Yet, microscopists still commonly acquire spectral information either with filters, thus integrating over a few broad bands only, or point-wise, dispersing the spectra onto
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Lejonklo, Caroline. "Friction and wear study of lean powder metallurgy steel in a lubricated sliding contact." Thesis, Uppsala universitet, Tillämpad materialvetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-390557.

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A fairly new technology used to produce metallic components is powder metallurgy (PM). Among the advantages with this technique are decreased cost of production for complex-shaped parts, new alloys are made possible, reduced end processing, less material loss, and vibrational damping effects. The downside is the number of pores created which can alter the tribological properties of the material. The focus of this report is to investigate how lean PM steel behaves under tribological contacts.  Friction and wear will be investigated using a pin-on-disc setup to mimic the sliding part of a gear t
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Weber, Michael. "All-Optical 4D In Vivo Monitoring And Manipulation Of Zebrafish Cardiac Conduction." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-166647.

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The cardiac conduction system is vital for the initiation and maintenance of the heartbeat. Over the recent years, the zebrafish (Danio rerio) has emerged as a promising model organism to study this specialized system. The embryonic zebrafish heart’s unique accessibility for light microscopy has put it in the focus of many cardiac researchers. However, imaging cardiac conduction in vivo remained a challenge. Typically, hearts had to be removed from the animal to make them accessible for fluorescent dyes and electrophysiology. Furthermore, no technique provided enough spatial and temporal reso
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Yildiz, Bilge Can. "Imaging Of Metal Surfaces Using Confocal Laser Scanning Microscopy." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613641/index.pdf.

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Optical imaging techniques have improved much over the last fifty years since the invention of the laser. With a high brightness source many imaging applications which were once inaccessible to researchers have now become a reality. Among these techniques, the most beneficial one is the use of lasers for both wide-field and confocal imaging systems. The aim of this study was to design a laser imaging system based on the concept of laser scanning confocal microscopy. Specifically the optical system was based on optical fibers allowing the user to image remote areas such as the inner surface of
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18

Kosmeier, Sebastian. "Optical eigenmodes for illumination & imaging." Thesis, University of St Andrews, 2013. http://hdl.handle.net/10023/3369.

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This thesis exploits so called “Optical Eigenmodes” (OEi) in the focal plane of an optical system. The concept of OEi is introduced and the OEi operator approach is outlined, for which quadratic measures of the light field are expressed as real eigenvalues of an Hermitian operator. As an example, the latter is employed to locally minimise the width of a focal spot. The limitations of implementing these spots with state of the art spatial beam shaping technique are explored and a selected spot with a by 40 % decreased core width is used to confocally scan an in focus pair of holes, delivering a
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19

Lehnen, Stephan [Verfasser]. "Investigation of light propagation in thin-film silicon solar cells by dual-probe scanning near-field optical microscopy / Stephan Lehnen." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2015. http://d-nb.info/1114841439/34.

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Palayret, Matthieu Grégoire Simon. "Applying single-molecule localisation microscopy to achieve virtual optical sectioning and study T-cell activation." Thesis, University of Cambridge, 2015. https://www.repository.cam.ac.uk/handle/1810/252696.

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Single-molecule localisation microscopy (SMLM) allows imaging of fluorescently-tagged proteins in live cells with a precision well below that of the diffraction limit. As a single-molecule technique, it has also introduced a new quantitative approach to fluorescence microscopy. In the Part A of this thesis, the design and building of three SMLM instruments, the implementation of a custom-developed image analysis package and the characterisation of the photo-physical properties of the photo-activable fluorescent protein used in this thesis (mEos), are discussed. Then, a new post-processing meth
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21

Dostál, Zbyněk. "Optimalizace parametrů optické soustavy digitálního holografického mikroskopu pro odražené světlo." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228845.

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The diploma thesis deals with the construction design of reflective type of holographic microscope together with the proposal for the mechanical imposition of optical elements. Thesis contains parts where the illumination beam tracing through the optical system is calculated and discussed, followed up with the accuracy requirements for rectification mechanisms and their design. The three-dimensional model of modularly solved microscope is presented in conclusion of this thesis together with selected microscope sub-assemblies.
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22

Vavřinová, Jana. "Koherencí řízený holografický mikroskop s digitální optikou." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-392857.

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The Digital Micromirror Device (DMD) technology has been developed especially for Digital Light Processing projectors, which allow the image projection. After this succesful implementation, and thanks to the commercial availibility and low initial cost of the DMD chip, a wide range of other applications became possible. Besides, it may be used in microscopy as a spatial light modulator. For example in Coherence-Controlled Holographic Microscope (CCHM) that finds its use especially for imaging and measurement of live-cell dynamic processes. The DMD chip placed in the illumination part of CCHM a
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23

SANTOS, MOISES O. dos. "Ablação de pele queimada com laser de pulsos ultra-curtos para promoção da cicatrização. Avaliação por tomografia por coerência óptica, histologia, µATR-FTIR e microscopia não-linear." reponame:Repositório Institucional do IPEN, 2012. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10171.

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Made available in DSpace on 2014-10-09T12:35:35Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:04:00Z (GMT). No. of bitstreams: 0<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
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Flajšmanová, Jana. "Behaviour of Objects in Structured Light Fields and Low Pressures." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-444991.

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Studium chování opticky zachycených částic nám umožňuje porozumět základním fyzikálním jevům plynoucím z interakce světla a hmoty. Předkládaná práce podává vysvětlení zesílení tažné síly působící na opticky svázané částice ve strukturovaném světelném poli, tzv. tažném svazku. Ukazujeme, že pohyb dvou opticky svázaných objektů v tažném svazku je silně závislý na jejich vzájemné vzdálenosti a prostorové orientaci, což rozšiřuje možnosti manipulace hmoty pomocí světla. Následně se práce zaměřuje na levitaci opticky zachycených částic ve vakuu. Představujeme novou metodologii na charakterizaci vla
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Eftekhar, Ali Asghar. "Nanoscale light-matter interactions in the near-field of high-Q microresonators." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/45900.

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The light-matter interaction in the near-field of high-Q resonators in SOI and SiN platforms is studied. The interactions of high-Q traveling-wave resonators with both resonant and non-resonant nanoparticles are studied and different applications based on this enhanced interactions in near-field such as high-resolution imaging of mode profile of high-Q resonators, label-free sensing, optical trapping, and SERS sensing are investigated. A near-field imaging system for the investigation of the near-field phenomena in the near-field of high-Q resonators is realized. A new technique for high-resol
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Ma, Pei. "OPTICAL IMAGING OF EMBRYONIC CARDIAC CONDUCTION." Case Western Reserve University School of Graduate Studies / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=case1464714110.

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27

Kropáč, Vlastimil. "Vláknový osvětlovací modul pro mikroskopii." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417106.

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This diploma thesis describes the design of the illumination system for a Coherence--Controlled Holographic Microscope (CCHM). The theoretical part mentions the history of microscopy, the principle of holography and individual types of interference microscopy. To get closer to the topic, individual light sources and an overview of current illumination systems are mentioned. The diploma thesis also describes the procedure of designing a fiber-optic illumination module for microscopy from optical design through design of construction to the last step, which is assembly and testing of the module.
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Lošťák, Martin. "Koherencí řízená holografická mikroskopie v opticky rozptylujících prostředích." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-234254.

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This thesis deals with imaging through diffuse media in coherence-controlled holographic microscope (CCHM) developed in IPE FME BUT. The mutual coherence function as well as the signal dependence on the lateral mutual shift between both arms of the CCHM are calculated. Both functions are related to each other. The latter dependence is measured experimentally. A principle of imaging with CCHM through diffuse media with both ballistic and diffuse light is explained by a simple geometrical model. This model is then verified experimentally by imaging a sample through diffuse medium. The point spre
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Federici, Antoine. "Développement de systèmes de microscopie par cohérence optique plein champ étendus spatialement et spectralement." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLS024/document.

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La tomographie par cohérence optique plein champ (OCT plein champ) est une technique de microscopie interférométrique basée sur l’utilisation d’une source de lumière faiblement cohérente, telle qu’une lampe halogène. Elle permet de réaliser, de façon non invasive, des images tomographiques à plusieurs centaines de micromètres de profondeur dans les tissus biologiques et avec une résolution spatiale isotrope de l’ordre de 1 µm. Ces travaux de thèse concernent le développement de plusieurs systèmes d'OCT plein champ, dans le but de proposer de nouvelles performances et de nouveaux contrastes des
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Hillman, Timothy R. "Microstructural information beyond the resolution limit : studies in two coherent, wide-field biomedical imaging systems." University of Western Australia. School of Electrical, Electronic and Computer Engineering, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0085.

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31

Quitero, Mayra Fidelis Zamboni. "Obtenção in vitro de mancha branca por desafio cariogênico misto." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/23/23134/tde-03112016-195812/.

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A proposta deste estudo in vitro foi otimizar o método microbiológico para a produção de lesão de mancha branca em esmalte que possa ser validada por ensaio não destrutivo (tomografia por coerência óptica - OCT) para possibilitar a utilização posterior dos espécimes em outros experimentos. Foram obtidos 168 fragmentos retangulares de esmalte bovino com janelas centrais de desmineralização de 3,0 x 3,0 mm. Os grupos experimentais foram compostos a partir de 3 fatores de variação: microrganismo (S. mutans UA 159, S. sobrinus 3347 e S. mutans + S. sobrinus), fonte de carboidrato (sacarose 1% e sa
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UEHARA, VANESSA B. "Efeito da radiação ionizante de feixe de elétrons em propriedades de biopolímeros comestíveis a base de proteína isolada de soja e fécula de mandioca." reponame:Repositório Institucional do IPEN, 2017. http://repositorio.ipen.br:8080/xmlui/handle/123456789/27971.

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Submitted by Marco Antonio Oliveira da Silva (maosilva@ipen.br) on 2017-11-09T10:58:19Z No. of bitstreams: 0<br>Made available in DSpace on 2017-11-09T10:58:19Z (GMT). No. of bitstreams: 0<br>Nas últimas décadas, têm aumentado substancialmente a quantidade de pesquisas focando no desenvolvimento e caracterização de materiais biodegradáveis, particularmente, filmes comestíveis. O uso de polímeros de fontes renováveis, preparados a partir de produtos vegetais, vem ganhando importância nessa abordagem. O concentrado de proteína de soja e amido de mandioca podem ser considerados uma alternativa ao
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Hekrlová, Kateřina. "Mikroskop pro vzájemné sesazování optických vláken." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-444979.

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The demountable splicing of optical fibres uses different types of connectors which ensures accurate position of connected fibres. If the optical fibres are aligned in free space, a view from two perpendicular viewing directions is necessary for a maximum aligning accuracy. The method of direct monitoring of optical fibres provides this possibility however, it is necessary to use two imaging systems. This problem can be solved by a special microscope, which is designed in this thesis. The microscope can visualize the alignment of optical fibres from two mutually perpendicular directions by mov
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Monavarian, Morteza. "Beyond conventional c-plane GaN-based light emitting diodes: A systematic exploration of LEDs on semi-polar orientations." VCU Scholars Compass, 2016. http://scholarscompass.vcu.edu/etd/4198.

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Despite enormous efforts and investments, the efficiency of InGaN-based green and yellow-green light emitters remains relatively low, and that limits progress in developing full color display, laser diodes, and bright light sources for general lighting. The low efficiency of light emitting devices in the green-to-yellow spectral range, also known as the “Green Gap”, is considered a global concern in the LED industry. The polar c-plane orientation of GaN, which is the mainstay in the LED industry, suffers from polarization-induced separation of electrons and hole wavefunctions (also known as th
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Gillant, Flavie. "Pince optique et microscopie à contraste de phase pour l'étude de la mécanique cellulaire : développement, modélisation et calibration en réflexion." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLO016/document.

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Ce manuscrit détaille le développement d'un montage de pince optique permettant d'étudier les propriétés mécaniques des cellules endothéliales, impliquées dans le développement de l'athérosclérose. Le but est de déterminer les propriétés viscoélastiques des cellules, et de suivre la propagation d’une contrainte mécanique au sein de la cellule. Cette contrainte mécanique est appliquée via une bille liée à la membrane de la cellule et soumise à un piège optique.Le dispositif réalisé combine le piégeage optique et la microscopie à contraste de phase, permettant d'exercer une force tout en imagean
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Souza, Samuel Teixeira de. "Microscopias de varredura por sondas aplicadas ao estudo de amostras biológicas, vítreas e cerâmicas." Universidade Federal de Alagoas, 2014. http://www.repositorio.ufal.br/handle/riufal/1701.

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In this work, scanning multiprobes microscopes were used to study the physical properties of biological, vitreous and ceramics samples. In particular, we have used three different scanning probe microscopy techniques to the study the samples. At first, an atomic force microscope was used to evaluate the mechanical properties of macrophages due to cell adhesion to an extracellular matrix and to study the changes in DNA molecules conformation treated with thymol and adsorbed onto a mica surface modified by poly-L-lysine. The results of these studies show that the cytoskeleton-mediated cell-matr
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MERGULHÃO, MARCELLO V. "Avaliação de propriedades mecânicas e caracterização microestrutural de consolidados de Cobalto-Cromo-Molibdênio obtidos por fusão seletiva a laser e fundição de precisão." reponame:Repositório Institucional do IPEN, 2017. http://repositorio.ipen.br:8080/xmlui/handle/123456789/27964.

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Submitted by Marco Antonio Oliveira da Silva (maosilva@ipen.br) on 2017-11-01T17:11:09Z No. of bitstreams: 0<br>Made available in DSpace on 2017-11-01T17:11:09Z (GMT). No. of bitstreams: 0<br>Este trabalho tem por objetivo estudar as propriedades mecânicas e a caracterização microestrutural de espécimes da liga de Co-Cr-Mo obtidos por manufatura aditiva fusão seletiva a laser (do inglês Selective Laser Melting SLM) e por fundição de precisão, visando a confecção de próteses odontológicas. A partir de pós de Co-Cr-Mo atomizados a gás foram realizadas as seguintes etapas: 1) investigação das
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Škarvada, Pavel. "Lokální optické a elektrické charakteristiky optoelektronických součástek." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-233561.

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Solar energy conversion, miniaturization of semiconductor devices and associated lifetime, reliability and efficiency of devices are the basic premise of this work. This work is focused on the study of optoelectronic devices especially solar cells and its nondestructive diagnostic. Solar cells are advantageous for study mainly because the pn junction is located near the surface and contains a lot of inhomogeneities. It has been difficult until recently to investigate their local physical (electrical and optical) parameters due to the size of inhomogeneities. Behavior of inhomogeneities can be
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Claveau, Rémy. "Caractérisation spectrale locale à l'aide de la microscopie interférométrique : simulations et mesures." Thesis, Strasbourg, 2017. http://www.theses.fr/2017STRAD037/document.

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La microscopie interférométrique est une méthode de mesure qui repose sur l’acquisition et le traitement du signal issu de l’interaction de deux ondes, dites ondes « objet » et de « référence ». Ces ondes proviennent des réflexions de la lumière sur un miroir de référence et sur l’échantillon étudié. Bien qu’étant généralement utilisées pour les analyses topographiques ou tomographiques d’un échantillon, les données interférométriques peuvent être exploitées pour réaliser des caractérisations spectrales locales résolues dans les trois directions de l’espace. Dans ce projet, nous avons étudié l
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Duran, Randolph. "Synthese, caracterisation physicochimique et etude structurale de polymeres liquides cristallins a groupes mesogenes lateraux." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13158.

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Sybthese de polymethacrylates avec des groupes mesogenes lateraux de type methoxybiphenylene relies au squelette par des chaines oligoethyleniques. Ces polymeres presentent un polymorphisme liquide cristallin thermotrope
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41

Bonnal, Thomas. "Développements de modèles optiques et de méthodes non supervisées de résolution des problèmes bilinéaires : application à l’imagerie vibrationnelle." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE1063.

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La caractérisation fine des matériaux inorganiques nécessite d'avoir accès à des informations complémentaires de celles apportées par des techniques d'analyse élémentaire ou de diffraction. La spectroscopie infrarouge à transformée de Fourier permet de caractériser les liaisons covalentes et l'environnement des groupes fonctionnels dans les matériaux. C'est donc une technique de choix pour l'étude des matériaux hydratés, amorphes ou sujets à des phénomènes de vieillissement. En couplant cette technique à une platine de déplacement, il est possible de réaliser des cartographies des phases sur q
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42

Relaix, Sabrina. "Cristaux liquides cholestériques en conditions non usuelles de photogélification : modulation du profil de réflexion de la lumière." Phd thesis, Université Paul Sabatier - Toulouse III, 2007. http://tel.archives-ouvertes.fr/tel-00179999.

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De part sa structuration en hélice, un Cristal Liquide Cholestérique (CLC) possède des propriétés optiques singulières. La lumière incidente sur un CLC est réfléchie sélectivement, avec une longueur d'onde λ0 associée proportionnelle au pas hélicoïdal et ceci sur une largeur spectrale de quelques dizaines de nm autour de λ0. La quantité de lumière réfléchie est par ailleurs limitée à 50% de la lumière ambiante (non polarisée). <br /><br />Les travaux de thèse se sont focalisés sur l'obtention de propriétés de réflexion de cholestériques gélifiés atypiques, avec deux objectifs de recherche: l'é
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43

Mutin, Hubert. "Etude de la gelification physique du poly (chlorure de vinyle)." Université Louis Pasteur (Strasbourg) (1971-2008), 1986. http://www.theses.fr/1986STR13117.

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Etude en solution concentree (gel) et en solution diluee (pregel) cinetique. Etude des agregats formes en solution diluee (petite particule de gel gonflee de solvant). Mise en evidence de deux types de noeuds de reticulation: noeuds stables formant rapidement et fondant a haute temperature et noeuds moins parfaits se formant lentement et fondant a basse temperature
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44

Seltmann, Jens. "Struktur-Eigenschaftsbeziehungen V-förmiger Mesogene zur Realisierung biaxial nematischer Mesophasen." Doctoral thesis, Universitätsbibliothek Chemnitz, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-67693.

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Die vorliegende Arbeit befasst sich mit der Synthese und der Untersuchung von Struktur-Eigenschaftsbeziehungen neuartiger V-förmiger, formstabiler Mesogene zur Realisierung biaxial nematischer Mesophasen (Nb). Alle synthetisierten Verbindungen besitzen ein formtreues Oligo(phenylenethinylen)-Grundgerüst, an welches laterale Alkyloxyketten und verschiedene terminale Substituenten (z. B. -CN, O(CH2)nCOOEt, Pyridyle) angebunden wurden. Durch dieses spezielle Design erhält man ausschließlich nematische und keine höher geordneten flüssigkristallinen Phasen. Durch den Einsatz verschiedener zentraler
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45

Hsu, Tsai-chun, and 徐才竣. "Measurement of Thermal Effect on Light Emitting Diodes by Optical Microscopy." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/27695489303263798069.

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碩士<br>國立臺灣科技大學<br>電子工程系<br>98<br>In general, the light emitting diodes (LEDs) are discussed its luminous quality by the variation of external light of LED. We applyed the forward voltage method to measure the junction temperature of LED. With optical microscopy in combination of high magnification objective lens, We could focus on the internal regions of LED to investigate the influence of thermal effect by injecting current from 10mA to 240mA. As the injection current increased, the junction temperature would also raise. The results showed a linear relation between injection current and junct
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Yan, Lu. "Stimulated emission depletion microscopy with optical fibers." Thesis, 2017. https://hdl.handle.net/2144/20853.

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Imaging at the nanoscale and/or at remote locations holds great promise for studies in fields as disparate as the life sciences and materials sciences. One such microscopy technique, stimulated emission depletion (STED) microscopy, is one of several fluorescence based imaging techniques that offers resolution beyond the diffraction-limit. All current implementations of STED microscopy, however, involve the use of free-space beam shaping devices to achieve the Gaussian- and donut-shaped Orbital Angular Momentum (OAM) carrying beams at the desired colors –-- a challenging prospect from the stand
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47

Huang, Shiuan-Wen, та 黃暄文. "1.2~1.35 μm fiber-based cherenkov light source for nonlinear optical microscopy". Thesis, 2014. http://ndltd.ncl.edu.tw/handle/xrt987.

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碩士<br>國立交通大學<br>照明與能源光電研究所<br>103<br>An intimate all fiber femtosecond Cherenkov radiation laser source, operated in the 1200-1350 nm bio-penetration windows, was demonstrated for the first time. Utilizing a self-started passively-mode-locked Erbium-doped fiber laser as the excitation source and a nonlinear fiber as the wavelength converter, a portable fiber-based femtosecond Cherenkov source, operated at 1200-1350 nm bio-penetration wavelength window, was demonstrated with multi-tens milliwatt-level output power and 89 fs pulsewidth. Based on the demonstrated portable fiber-based femtosecond
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Huang, Yi-Hsuan, and 黃翊軒. "Measurement of Light Emitting Diodes grown on Pattern Sapphire Substrate by Optical Microscopy." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/33764673365940575545.

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碩士<br>國立臺灣科技大學<br>光電工程研究所<br>101<br>In general, the light emitting diodes (LEDs) are discussed its luminous quality by the variation of external light of LED. We use optical microscopy in combination of high magnification objective lens to focus on the internal regions of LED to investigate the influence of patterned sapphire substrate. Through the optical system we would know the current spreading in the interior regions of LED was not very uniform. The luminous intensity would stronger concentrate in the nearby electrode regions. As the operating current raised, the refractive index of galli
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Adeyemi, Adekunle Adesanya. "Digital micro-mirror devices in digital optical microscopy." Thesis, 2009. http://hdl.handle.net/1828/1530.

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In this thesis, studies on the applications of digital micro-mirror devices (DMD) to enhancement of digital optical microscope images are presented. This involves adaptation of the fast switching capability and high optical efficiency of DMD to control the spatial illumination of the specimen. The first study focuses on a method of using DMD to enhance the dynamic range of a digital optical microscope. Our adaptive feedback illumination control method generates a high dynamic range image through an algorithm that combines the DMD-to-camera pixel geometrical mapping and a feedback operation.
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LEE, CHUNG-HAO, and 李中皓. "Observation of Internal Light Intensity Distribution of Light Emitting Diodes Grown on Patterned Sapphire Substrate by Optical Microscopy." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/83264250963170104089.

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碩士<br>國立臺灣科技大學<br>電子工程系<br>102<br>In general, the light emitting diodes (LEDs) are discussed its luminous quality by the variation of external light of LED. We use optical microscopy in combination of high magnification objective lens and mobile platform, We could focus on the surface and lateral regions of LED to investigate the epitaxy quality. Through the optical system we would investigate the light intensitiy distribution of pattern when the light emit in the patterned sapphire substrate, and we verify this phenomenon by lighttools optical simulation software. We could merger different lu
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