Relevant bibliographies by topics / Optical waveguide lightmode spectroscopy / Dissertations / Theses
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Dissertations / Theses on the topic 'Optical waveguide lightmode spectroscopy'

Author: Grafiati
Published: 4 June 2021
Last updated: 18 February 2022

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1

Ansari, Farahnaz. "Use of magnetic nanoparticles to enhance biodesulfurization." Thesis, Cranfield University, 2008. http://dspace.lib.cranfield.ac.uk/handle/1826/4424.

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Biodesulfurization (BDS) is an alternative to hydrodesulfurization (HDS) as a method to remove sulfur from crude oil. Dibenzothiophene (DBT) was chosen as a model compound for the forms of thiophenic sulfur found in fossil fuels; up to 70% of the sulfur in petroleum is found as DBT and substituted DBTs; these compounds are however particularly recalcitrant to hydrodesulfurization, the current standard industrial method. My thesis deals with enhancing BDS through novel strains and through nanotechnology. Chapter highlights are: Chapter 2. My first aim was to isolate novel aerobic, mesophilic ba
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2

Peic, Antun. "Mesoporous thin-film materials studied by optical waveguide spectroscopy." Thesis, University of Bath, 2009. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.518293.

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A method was developed to access the interior of light-guiding structures in order to exploit the enhanced sensing potential of the highly confined electromagnetic field distributions, located within the core of a waveguide. The work presented in this thesis explores therefore the possibilities of optical waveguide spectroscopy utilising transparent mesoporous thin-film waveguides deposited on top of athin gold layer. These multi-layer assemblies are employed in a prism-coupling attenuated total internal reflection (ATR) configuration. The angular read-out of the reflected light intensity allo
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3

Mendes, Sergio Brito 1959. "Broadband attenuated total reflection spectroscopy in the optical waveguide regime." Diss., The University of Arizona, 1997. http://hdl.handle.net/10150/282299.

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A broadband, multichannel, single mode, planar waveguide based ATR spectrometer was developed. A sensitivity enhancement of three orders of magnitude compared to the conventional transmission spectroscopic technique has been experimentally achieved. Applications to protein submonolayers adsorbed on glass surfaces provided the first results on the spectral characterization of those molecular films. The increased information content and the higher sensitivity response allowed us to experimentally determine the molecular orientation of organic films over a broad spectral range. The work developed
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4

Pal, Avishekh. "Reliability of liquid core optical waveguides for sensitive optical absorption measurements of trace species in water." [Tampa, Fla.] : University of South Florida, 2005. http://purl.fcla.edu/fcla/etd/SFE0001329.

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5

Bradshaw, John Thomas. "BROADBAND COUPLING INTO SINGLE MODE, PLANAR INTEGRATED OPTICAL WAVEGUIDE STRUCTURES FOR SPECTRAL ANALYSIS OF THIN FILM ANALYTES AND INTERFACIAL CHEMICAL ENVIRONMENTS." Diss., Tucson, Arizona : University of Arizona, 2005. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1144%5F1%5Fm.pdf&type=application/pdf.

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6

Wijekoon, Wijekoon Mudiyanselage Kapila Piyasena. "Waveguide Surface Coherent anti-Stokes Raman Scattering Spectroscopy and optical second harmonic generation spectroscopy of molecules adsorbed on metal oxide surfaces." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184444.

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This dissertation reports the application of nonlinear optical effects for the investigation of vibrational and electronic spectroscopy of molecules adsorbed on thin film metal oxide surfaces and metal oxide surfaces. The main emphasis of the experiments cited here is to introduce the recently developed multi-photon technique, Waveguide Surface Coherent anti-Stokes Raman Scattering Spectroscopy (WSCARS), to the scientific community. Planar optical waveguides have been utilized to generate large optical field enhancements on metal oxide surfaces. Guided waves have been employed to obtain the su
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7

Kork, El Nayla. "Near field optical spectroscopy of hybrid nanoparticles for biosensor application and confocal microscopy of single silicon nanocrystals." Thesis, Lyon 1, 2009. http://www.theses.fr/2009LYO10108/document.

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Le domaine des nanomatériaux joue un rôle de plus en plus important dans de nombreuses applications, qu’elles soient de natures biologique, médicales électroniques etc… Dans ce travail, nous présenterons des résultats concernant deux types de nanoparticules, le premier genre traite de nanoparticules hybrides confectionnées chimiquement pour des fins biologiques, le deuxième concerne des nanocristaux de silicium fabriqués par pyrolise laser pour des applications potentielles en optoélectronique. Les études sont menées en mettant en œuvre deux différentes techniques optiques, l’une en champ loin
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8

Yeo, Inah. "A quantum dot in a photonic wire : spectroscopy and optomechanics." Thesis, Grenoble, 2012. http://www.theses.fr/2012GRENY076/document.

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Dans cette thèse, nous avons étudié les propriétés optiques de boîtes quantiques InAs/GaAs contenues dans un fil photonique. Des résultats antérieurs à cette thèse ont montré que ces fils photoniques permettent d’extraire les photons avec une efficacité très élevée.Le premier résultat original de ce travail est l’observation de la dérive temporelle de la raie d’émission de la photoluminescence d’une boîte quantique. Cet effet a été attribué à la lente modification de la charge de surface du fil due à l’absorption des molécules d’oxygène présentes dans le vide résiduel du cryostat. Nous avons m
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9

Micó, Cabanes Gloria. "Integrated Spectroscopic Sensor fabricated in a novel Si3N4 platform." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/159381.

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[ES] Esta tesis se ha centrado en el modelado, diseño y demostración experimental de un sensor espectroscópico integrado basado en un AWG (del inglés Arrayed Waveguide Grating). El dispositivo ha sido diseñado y fabricado en una nueva plataforma de nitruro de silico (Si3N4) en oxido de silico (SiO2) desarrollada en España. El trabajo realizado en esta tesis se puede dividir en dos secciones principalmente. En la primera parte, se describe el panorama general de las plataformas de Si3N4 existentes y su estado del arte, junto con la descripción de los procesos de fabricación y caracterización de
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10

Jamadi, Omar. "Spectroscopie de condensats polaritoniques dans des microcavités et guides d’onde à base de GaN et ZnO." Thesis, Université Clermont Auvergne‎ (2017-2020), 2018. http://www.theses.fr/2018CLFAC031/document.

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Ce manuscrit de thèse est consacré aux condensats de polaritons dans deux semi-conducteurs à grand gap : GaN et ZnO. La première partie de ce travail se concentre sur l’étude par spectroscopie optique de deux microcavités planaires (une de GaN, l’autre de ZnO) présentant des structures et des propriétés photoniques identiques. Le régime de couplage fort lumière-matière et l’effet laser à polaritons ont pu être observés de 5 K à 300 K pour les deux microcavités. La réalisation de diagrammes de phase a mis en évidence l’impact variable des résonances avec les phonons LO sur l’abaissement du seui
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11

Auxier, Julie A. "Retention of protein repulsive character and antimicrobial activity of PEO brush layers following nisin entrapment." Thesis, 2012. http://hdl.handle.net/1957/35800.

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Nisin, an amphiphilic, antimicrobial peptide, has been shown to integrate into the hydrophobic inner region of poly(ethylene oxide) (PEO) brush layers; however, the presence of integrated nisin may compromise the protein repulsive character of the PEO layer. In particular, the introduction of fibrinogen to nisin-loaded brush layers has been observed to cause changes consistent with partial elution of nisin and/or location of fibrinogen at the interface. Questions surrounding the possibility of fibrinogen adsorption warrant further investigation, as the location of procoagulant proteins at a pe
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12

Dill, Justen K. "Quantifying nisin adsorption behavior at pendant polyethylene oxide brush layers." Thesis, 2012. http://hdl.handle.net/1957/30210.

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A more quantitative understanding of peptide loading and release from polyethylene oxide (PEO) brush layers will provide direction for development of new strategies for drug storage and delivery. The antimicrobial peptide nisin shows potent activity against Gram-positive bacteria including the most prevalent implant-associated pathogens, its mechanism of action minimizes the opportunity for the rise of resistant bacteria and it does not appear to be toxic to humans, suggesting good potential for its use in antibacterial coatings for selected medical devices. In this work, optical waveguide lig
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13

Wang, Yi [Verfasser]. "New biosensor applications of surface plasmon and hydrogel optical waveguide spectroscopy / Yi Wang." 2010. http://d-nb.info/1009042378/34.

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14

Bescherer-Nachtmann, Klaus. "Fibre-Loop Ring-Down Spectroscopy Using Liquid Core Waveguides." Thesis, 2013. http://hdl.handle.net/1974/7906.

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Cavity ring-down spectroscopy has been used over the last twenty years as a highly sensitive absorption spectroscopic technique to measure light attenuation in gases, liquids, and solid samples. An optical cavity is used as a multi-pass cell, and the decay time of the light intensity in the cavity is measured, thereby rendering the techniques insensitive to light intensity fluctuations. Optical waveguides are used to build the optical cavities presented in this work. The geometries of such waveguides permit the use of very small liquid sample volumes while retaining the advantages of cavity ri
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15

Lazzara, Thomas Dominic. "Directing macromolecular assemblies by tailored surface functionalizations of nanoporous alumina." Thesis, 2011. http://hdl.handle.net/11858/00-1735-0000-0006-B098-3.

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