Relevant bibliographies by topics / Photonic imaging / Dissertations / Theses
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Dissertations / Theses on the topic 'Photonic imaging'

Author: Grafiati
Published: 4 June 2021
Last updated: 13 February 2022

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1

Stumpf, Wolfgang. "High resolution imaging of photonic crystals." [S.l. : s.n.], 2004. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB11051695.

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2

McCrindle, Iain James Hugh. "Structured photonic materials for multi-spectral imaging applications." Thesis, University of Glasgow, 2015. http://theses.gla.ac.uk/6446/.

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Structured photonic materials are typically composed of periodic subwavelength elements where the unit cell geometries can impact the overall optical characteristics of the bulk material. By using micro and nanofabrication technologies it is possible to engineer the electromagnetic properties of structured photonic materials for a given application and create a variety of optical components such as band pass filters and absorbers. Two structured photonic materials that have gained substantial interest in recent years are plasmonic filters and metamaterials which are well suited for optical and
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3

Sriram, Paturi Atreya. "Image Contrast Enhancement using Biomolecular Photonic Contrast Agents and Polarimetric Imaging Principles." University of Akron / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=akron1203118139.

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4

Paturi, Sriram Atreya. "Image Contrast Enhancement Using Biomolecular Photonic Contrast Agents and Polarimetric Imaging Principles." University of Akron / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=akron1204225545.

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5

Lee, Seoungjun. "Super-resolution optical imaging using microsphere nanoscopy." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/superresolution-optical-imaging-using-microsphere-nanoscopy(c3b36c86-11b5-4c77-9a69-b966585b0509).html.

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Standard optical microscopes cannot resolve images below 200 nm within the visible wavelengths due to optical diffraction limit. This Thesis reports an investigation into super-resolution imaging beyond the optical diffraction limit by microsphere optical nano-scopy (MONS) and submerged microsphere optical nano-scopy (SMON). The effect of microsphere size, material and the liquid type as well as light illumination conditions and focal plane positions on imaging resolution and magnification have been studied for imaging both biological (viruses and cells) and non-biological (Blu-ray disk patter
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6

Wagner, Rebecca. "Local Structural and Optical Characterization of Photonic Crystals by Back Focal Plane Imaging and Spectroscopy." Doctoral thesis, Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-164382.

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This thesis establishes methods to locally and effciently detect the fluorescence from photonic crystals (PCs) in dependence on wavelength and direction. These are applied to three dimensional (3D) PCs grown by vertical deposition of polystyrene beads. The experiments allow conclusions about the local 3D structure of a sample, about defects in its volume and about spatial structural variations. They thus provide more information than typical spectroscopy measurements that average over large areas and methods that only image the surface structure like scanning electron microscopy. A focused las
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7

Fu, Ling, and n/a. "Fibre-optic nonlinear optical microscopy and endoscopy." Swinburne University of Technology, 2007. http://adt.lib.swin.edu.au./public/adt-VSWT20070521.155004.

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Cancer is a major health problem in the world today. Almost all cancers have a significantly better chance for therapy and recovery if detected at their early stage. The capability to perform disease diagnosis at an early stage requires high-resolution imaging that can visualise the physiological and morphological changes at a cellular level. However, resolving powers of current medical imaging systems are limited to sub-millimeter sizes. Furthermore, the majority of cancers are associated with morphological and functional alterations of cells in epithelial tissue, currently assessed by invasi
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8

Lombardini, Alberto. "Nonlinear optical endoscopy with micro-structured photonic crystal fibers." Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4377.

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Dans cette thèse, nous proposons l'utilisation d'un nouveau type de fibre à cristal photonique, la fibre Kagomé à coeur creux, pour la livraison d'impulsions ultra-courtes en endoscopie non linéaire. Ces fibres permettent la livraison d'impulsions sans distorsion sur une large bande spectrale, avec un faible bruit de fond, grâce à la propagation dans le cœur creux. Nous avons résolu le problème de la résolution spatiale, à l'aide d'une microbille en silice, insérée dans le cœur de la fibre Kagomé. Nous avons développé un système d'imagerie compacte, qui utilise un tube piézo-électrique pour le
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9

Schell, Andreas Wolfgang. "Photonic applications and hybrid integration of single nitrogen vacancy centres in nanodiamond." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 2015. http://dx.doi.org/10.18452/17128.

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In dieser Arbeit wird das Stickstoff-Fehlstellenzentrum (NV Zentrum) in Diamant als ein solcher Einzelphotonenemitter untersucht. Durch Benutzung eines hybriden Ansatzes werden hier NV Zentren in Diamantnanopartikeln in photonische Strukturen integriert. Zuerst wird eine aufnehmen-und-ablegen-Nanomanipulationstechnik mittels eines Rasterkraftmikroskops verwendet um einzelne NV Zentren an eine photonische Kristallkavität und eine optische Faser zu koppeln. Durch Kopplung an die photonische Kristallkavität wird die Emission der Nullphononenlinie des NV Zentrums um den Faktor 12.1 erhöht und durc
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10

Wagner, Rebecca [Verfasser], Frank [Akademischer Betreuer] Cichos, Frank [Gutachter] Cichos, and Cefe [Gutachter] Lopez. "Local Structural and Optical Characterization of Photonic Crystals by Back Focal Plane Imaging and Spectroscopy / Rebecca Wagner ; Gutachter: Frank Cichos, Cefe Lopez ; Betreuer: Frank Cichos." Leipzig : Universitätsbibliothek Leipzig, 2015. http://d-nb.info/1239565186/34.

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11

Zhang, Zihao. "Investigating the far- and near-field thermal radiation in carbon-based nanomaterials." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54433.

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Two classes of carbon nanomaterials—carbon nanotubes and graphene—have promoted the advancement of nanoelectronics, quantum computing, chemical sensing and storage, thermal management, and optoelectronic components. Studies of the thermal radiative properties of carbon nanotube thin film arrays and simple graphene hybrid structures reveal some of the most exciting characteristic electromagnetic interactions of an unusual sort of material, called hyperbolic metamaterials. The features and results on these materials in the context of both far-field and near-field radiation are presented in this
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12

Smith, Brett. "Coherent Anti-Stokes Raman Scattering Miniaturized Microscope." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/24281.

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Microscopy techniques have been developed and refined over multiple decades, but innovation around single photon modalities has slowed. The advancement of the utility of information acquired, and minimum resolution available is seemingly reaching an asymptote. The fusion of light microscopy and well-studied nonlinear processes has broken through this barrier and enabled the collection of vast amounts of additional information beyond the topographical information relayed by traditional microscopes. Through nonlinear imaging modalities, chemical information can also be extracted from tissue. Non
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13

Toullec, Alexis. "Dispositif d’aiguille fibrée pour la spectroscopie de fluorescence endogène de lésions mammaires et pulmonaires ex vivo et in vivo ; vers le développement d'une méthode d’ histopathologie in situ." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS154/document.

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Le troisième Plan Cancer lancé en 2013 désigne la précocité du diagnostic comme l'un des enjeux majeurs pour l'amélioration de la prise en charge des patients. Malgré l’essor des modalités et des performances de l’imagerie médicale, il reste des défis à relever pour l’aide au diagnostic et optimiser le recourt à la biopsie.L’imagerie photonique et spécialement la fluorescence résolue spectralement a déjà été éprouvée pour la caractérisation ex vivo des tumeurs mammaires et pulmonaires, sans agent de contraste ou traitement des échantillons. Notre objectif est de caractériser les capacités d'un
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14

Steuwe, Christian. "Nonlinear photonics in biomedical imaging and plasmonics." Thesis, University of Cambridge, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708016.

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15

Jollivet, Clemence. "Specialty Fiber Lasers and Novel Fiber Devices." Doctoral diss., University of Central Florida, 2014. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/6295.

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At the Dawn of the 21st century, the field of specialty optical fibers experienced a scientific revolution with the introduction of the stack-and-draw technique, a multi-steps and advanced fiber fabrication method, which enabled the creation of well-controlled micro-structured designs. Since then, an extremely wide variety of finely tuned fiber structures have been demonstrated including novel materials and novel designs. As the complexity of the fiber design increased, highly-controlled fabrication processes became critical. To determine the ability of a novel fiber design to deliver light w
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16

Ruan, Zhichao. "Dispersion Engineering : Negative Refraction and Designed Surface Plasmons in Periodic Structures." Doctoral thesis, Stockholm : Informations- och kommunikationsteknik, Kungliga Tekniska högskolan, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4542.

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17

Allen, Kenneth Wayne Jr. "Waveguide, photodetector, and imaging applications of microspherical photonics." Thesis, The University of North Carolina at Charlotte, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3685782.

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<p> Dielectric microspheres with diameters (<i>D</i>) on the order of several wavelengths of light have attracted increasing attention from the photonics community due to their ability to produce extraordinarily tightly focused beams termed "photonic nanojets," to be used as microlenses for achieving optical super-resolution or to develop sensors based on whispering gallery mode resonances. In this dissertation, we study the optical properties of more complicated structures formed by multiple spheres which can be assembled as linear chains, clusters or arrays, integrated with waveguides or emb
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18

Palmer, Max John. "New developments for imaging energetic photons." Thesis, University of Southampton, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243171.

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19

Emre, Eylem. "Scanning Imaging With High Energy Photons." Master's thesis, Ankara : METU, 2003. http://etd.lib.metu.edu.tr/upload/1206614/index.pdf.

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20

Gach, Jean-Luc. "Imageurs à amplification." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0317.

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La quête du détecteur parfait, sans bruit, capable de détecter des photons uniques dans le visible et l’infrarouge, et ultimement de déterminer leur énergie est le graal de la détection. Pour arriver à ce but, de nombreux scientifiques ont développé des dispositifs depuis plusieurs dizaines d’années, et les astronomes ont toujours été à la pointe en ce domaine. En ce sens les imageurs à amplification semblent être la voie la plus rapide et la plus prometteuse pour atteindre ce but ultime. Ainsi après un bref historique de l’état de l’art sont exposés les systèmes à comptage de photons (IPCS) d
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21

Monfort, Tual Remy. "Non linear photonics : developments & applications in biomedical imaging." Thesis, University of Southampton, 2018. https://eprints.soton.ac.uk/422862/.

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Nonlinear polarization is explored in a biological and a technological contexts. Experimental set-ups are developed and built for interrogating nonlinear polarization in biological environment. Most notably, a Coherent Anti-Stokes Raman Scattering (CARS) and Second Harmonic Generation (SHG) microscopes are implemented in the Institute for Life Sciences (IfLS) at Southampton University. CARS and SHG are nonlinear effects based on different contrasts but both are label-free−and as a consequence truly in vivo; without perturbation of the biological mechanisms in opposition to fluorescence techniq
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22

Barton, Jennifer K., Babak Amirsolaimani, Photini Rice, Kenneth Hatch, and Khanh Kieu. "Three-photon imaging of ovarian cancer." SPIE-INT SOC OPTICAL ENGINEERING, 2016. http://hdl.handle.net/10150/621253.

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Optical imaging methods have the potential to detect ovarian cancer at an early, curable stage. Optical imaging has the disadvantage that high resolution techniques require access to the tissue of interest, but miniature endoscopes that traverse the natural orifice of the reproductive tract, or access the ovaries and fallopian tubes through a small incision in the vagina wall, can provide a minimally-invasive solution. We have imaged both rodent and human ovaries and fallopian tubes with a variety of endoscope-compatible modalities. The recent development of fiber-coupled femtosecond lasers wi
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23

Cheng, Wu. "Optimal Denoising for Photon-limited Imaging." University of Dayton / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1446401290.

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24

Shin, Dongeek. "Computational imaging with small numbers of photons." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/103743.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2016.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 189-202).<br>The ability of an active imaging system to accurately reconstruct scene properties in low light-level conditions has wide-ranging applications, spanning biological imaging of delicate samples to long-range remote sensing. Conventionally, even with timeresolved detectors that are sensitive to individual photons, obtaining accurate images requires hundreds of photon detections at
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25

Schøler, Mikkel. "Improving imaging performance in planar superlenses." Thesis, University of Canterbury. Department of Electrical and Computer Engineering, 2011. http://hdl.handle.net/10092/5804.

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The aim of this project was to improve the imaging performance of planar superlenses for evanescent near-field lithography. An experimental investigation of the performance of superlenses with reduced surface roughness was proposed. Such an investigation poses significant requirements in regards to process control in thin film deposition of silver onto dielectric substrates. Thin film deposition of silver films, onto silicon dioxide substrates, achieved films with root mean square surface roughness as low as 0.8 nm. While these experiments provided good understanding of the deposition process,
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26

Beckett, Martin Gregory. "High resolution infrared imaging." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388828.

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27

Jang, Yuseong. "High resolution time-resolved imaging system in the vacuum ultraviolet region." Master's thesis, University of Central Florida, 2014. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/6293.

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High-power debris-free vacuum ultraviolet (VUV) light sources have applications in several scientific and engineering areas, such as high volume manufacturing lithography and inspection tools in the semiconductor industry, as well as other applications in material processing and photochemistry. For the past decades, the semiconductor industry has been driven by what is called "Moore's Law". The entire semiconductor industry relies on this rule, which requires chip makers to pack transistors more tightly with every new generation of chips, shrinking the size of transistors. The ability to solve
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28

Ngo, Ndimba Alphonsine L. "Photoactive molecular assemblies for optical limiting and bio-imaging." Thesis, Rennes 1, 2020. http://www.theses.fr/2020REN1S103.

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Dans cette thèse, nous ciblons de nouveaux absorbeurs biphotoniques pour la bio-imagerie et la limitation optique. Nous nous sommes intéressés plus précisément à des octupôles, structures connues pour posséder des propriétés intéressantes en optique non-linéaire et plus particulièrement en absorption à deux photons. Ainsi, les cœurs isocyanurate et 1,3,5-triazine, connus comme étant des accepteurs, mènent à des octupôles bidimensionnels lorsqu’ils sont substitués de façon symétrique. Pour lors, les isocyanurates ont été peu étudiés pour l’optique non linéaire tandis que les triazines ont déjà
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29

Lentz, Joshua K. "Perceptual image quality of launch vehicle imaging telescopes." Doctoral diss., University of Central Florida, 2011. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4963.

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A large fleet (in the hundreds) of high quality telescopes are used for tracking and imaging of launch vehicles during ascent from Cape Canaveral Air Force Station and Kennedy Space Center. A maintenance tool has been development for use with these telescopes. The tool requires rankings of telescope condition in terms of the ability to generate useful imagery. It is thus a case of ranking telescope conditions on the basis of the perceptual image quality of their imagery. Perceptual image quality metrics that are well-correlated to observer opinions of image quality have been available for seve
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30

Rumbley, Sarah (Sarah E. ). "Photon-efficient computational imaging with single-photon avalanche diode (SPAD) arrays." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/106005.

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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2015.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 77-78).<br>Single-photon avalanche diodes (SPADs) are highly sensitive photodetectors that enable LIDAR imaging at extremely low photon flux levels. While conventional image formation methods require hundreds or thousands of
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31

Selig, Marco. "Information theory based high energy photon imaging." Diss., Ludwig-Maximilians-Universität München, 2015. http://nbn-resolving.de/urn:nbn:de:bvb:19-178899.

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32

Northcott, Malcolm John. "Photon limited imaging using the triple correlation." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/47593.

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33

Maccarone, Aurora. "Single-photon detection techniques for underwater imaging." Thesis, Heriot-Watt University, 2016. http://hdl.handle.net/10399/3287.

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This Thesis investigates the potential of a single-photon depth profiling system for imaging in highly scattering underwater environments. This scanning system measured depth using the time-of-flight and the time-correlated single-photon counting (TCSPC) technique. The system comprised a pulsed laser source, a monostatic scanning transceiver, with a silicon single-photon avalanche diode (SPAD) used for detection of the returned optical signal. Spectral transmittance measurements were performed on a number of different water samples in order to characterize the water types used in the experimen
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34

Hafian, Hilal. "IMAGERIE CELLULAIRE ET TISSULAIRE DE BIO-MARQUEURS TUMORAUX : EXCITATION MULTI-PHOTONIQUE DE QUANTUM DOTS CONJUGUES AVEC DES ANTICORPS DE DOMAINE SIMPLE." Thesis, Reims, 2016. http://www.theses.fr/2016REIMP201.

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Les conjugués QD-sdAbs sont des nano-sondes qui associent un quantum dot (QD) et des anticorps de domaine simple (sdAbs). Ces nano-sondes fluorescentes permettent des immunomarquages sur coupes tissulaires et sur cellules. L’objectif de ce travail est de montrer l’intérêt de l’excitation multi-photonique pour la détection et la localisation très spécifiques de biomarqueurs tumoraux.L’excitation multi-photonique des nano-sondes QD570-sdAb anti-CEA a été étudiée, sur coupes d’appendice et de carcinome du côlon humains pour optimiser le rapport signal/auto-fluorescence. L’utilisation du QD comme
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35

Jha, Abhinav K. "Retrieving Information from Scattered Photons in Medical Imaging." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/301705.

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In many medical imaging modalities, as photons travel from the emission source to the detector, they are scattered by the biological tissue. Often this scatter is viewed as a phenomenon that degrades image quality, and most research is focused on designing methods for either discarding the scattered photons or correcting for scatter. However, the scattered photons also carry information about the tissue that they pass through, which can perhaps be extracted. In this research, we investigate methods to retrieve information from the scattered photons in two specific medical imaging modalities:
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36

Yin, Tengfei. "Advanced ultrawideband imaging algorithms for breast cancer detection." Thesis, University of Sussex, 2015. http://sro.sussex.ac.uk/id/eprint/57367/.

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Ultrawideband (UWB) technology has received considerable attention in recent years as it is regarded to be able to revolutionise a wide range of applications. UWB imaging for breast cancer detection is particularly promising due to its appealing capabilities and advantages over existing techniques, which can serve as an early-stage screening tool, thereby saving millions of lives. Although a lot of progress has been made, several challenges still need to be overcome before it can be applied in practice. These challenges include accurate signal propagation modelling and breast phantom construct
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37

Richardson, Justin Andrew. "Time resolved single photon imaging in nanometer scale CMOS technology." Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/7588.

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Time resolved imaging is concerned with the measurement of photon arrival time. It has a wealth of emerging applications including biomedical uses such as fluorescence lifetime microscopy and positron emission tomography, as well as laser ranging and imaging in three dimensions. The impact of time resolved imaging on human life is significant: it can be used to identify cancerous cells in-vivo, how well new drugs may perform, or to guide a robot around a factory or hospital. Two essential building blocks of a time resolved imaging system are a photon detector capable of sensing single photons,
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38

Neimert-Andersson, Thomas. "3D imaging using time-correlated single photon counting." Thesis, Uppsala University, Signals and Systems Group, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-121104.

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<p>This project investigates a laser radar system. The system is based on the principles of time-correlated single photon counting, and by measuring the times-of-flight of reflected photons it can find range profiles and perform three-dimensional imaging of scenes. Because of the photon counting technique the resolution and precision that the system can achieve is very high compared to analog systems. These properties make the system interesting for many military applications. For example, the system can be used to interrogate non-cooperative targets at a safe distance in order to gather intel
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39

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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40

Finnemeyer, Valerie A. "Development of Liquid Crystal Infrared Imaging Sensors." Kent State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=kent1463139065.

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41

Noronha, e. Tavora Luis Miguel O. P. "Imaging applications and an extension of the EGS4 code system." Thesis, University of Surrey, 1998. http://epubs.surrey.ac.uk/843180/.

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This thesis investigates the use of Monte Carlo methods to study several imaging applications. Studies are based on the EGS4 code system, and some of these used a low energy electron expansion for this software package that was developed during this work. The code is firstly used to gain some insight into one-sided imaging techniques making use of megavoltage radiation. The method explored is based on induced positron annihilation. The dependence of annihilation yields on atomic number demonstrates that the technique is suitable for the inspection of high-Z inclusions in low-Z, less dense, mat
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42

Watt, John. "A photon counting pixel detector for X-ray imaging." Thesis, University of Glasgow, 2001. http://theses.gla.ac.uk/1009/.

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Hybrid semiconductor pixel detector technology is presented in this thesis as an alternative to current imaging systems in medical imaging and synchrotron radiation applications. The technology has been developed from research performed in High Energy Physics, in particular, for the ATLAS experiment at the LHC, planned for 2005. This thesis describes work done by the author on behalf of the MEDIPIX project, a collaboration between 13 international institutions for the development of hybrid pixel detectors for non-HEP applications. Chapter 1 describes the motivation for these detectors, the ori
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43

Lapington, Jonathan Stephen. "New techniques for imaging photon counting and particle detectors." Thesis, University College London (University of London), 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.411261.

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44

Sjulson, Lucas L. "Two photon imaging of a genetically encodable voltage sensor /." Access full-text from WCMC, 2007. http://proquest.umi.com/pqdweb?did=1445034911&sid=23&Fmt=2&clientId=8424&RQT=309&VName=PQD.

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45

Shin, Dongeek. "Computational 3D and reflectivity imaging with high photon efficiency." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/90142.

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Thesis: S.M. in Computer Science and Engineering, Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2014.<br>45<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 77-81).<br>Imaging the 3D structure and reflectivity of a scene can be done using photon-counting detectors. Traditional imagers of this type typically require hundreds of detected photons per pixel for accurate 3D and reflectivity imaging. Under low light-level conditions, in which the mean photon count is small, the inverse problem of forming 3D and
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46

Ren, Ximing. "Advanced photon counting techniques for long-range depth imaging." Thesis, Heriot-Watt University, 2015. http://hdl.handle.net/10399/2980.

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The Time-Correlated Single-Photon Counting (TCSPC) technique has emerged as a candidate approach for Light Detection and Ranging (LiDAR) and active depth imaging applications. The work of this Thesis concentrates on the development and investigation of functional TCSPC-based long-range scanning time-of-flight (TOF) depth imaging systems. Although these systems have several different configurations and functions, all can facilitate depth profiling of remote targets at low light levels and with good surface-to-surface depth resolution. Firstly, a Superconducting Nanowire Single-Photon Detector (
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47

Weir, Iain Stewart. "Statistical modelling and reconstructions in single photon emission computed tomography." Thesis, University of Bristol, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335395.

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48

Kniffin, Gabriel Paul. "Physics-Based Imaging Methods for Terahertz Nondestructive Evaluation Applications." PDXScholar, 2016. http://pdxscholar.library.pdx.edu/open_access_etds/2945.

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Lying between the microwave and far infrared (IR) regions, the "terahertz gap" is a relatively unexplored frequency band in the electromagnetic spectrum that exhibits a unique combination of properties from its neighbors. Like in IR, many materials have characteristic absorption spectra in the terahertz (THz) band, facilitating the spectroscopic "fingerprinting" of compounds such as drugs and explosives. In addition, non-polar dielectric materials such as clothing, paper, and plastic are transparent to THz, just as they are to microwaves and millimeter waves. These factors, combined with sub-m
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49

Nagaraja, Chetan. "Implementation of 3D Imaging for Two-photon Laser Scanning Microscopy." Thesis, Uppsala University, Department of Information Technology, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-129479.

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<p>Information exchange between neural systems occurs at the level of populations of neurons. Thus in order to understand how this information exchange occurs, it is indispensible to understand the role of underlying neuronal systems.</p><p>Electrophysiological techniques have enhanced our understanding of the nervous system by enabling the study of properties of single ion channels to that of ensembles of neurons. While electrophysiological measurements offer excellent temporal resolution, they lack spatial resolution as this method provides a readout of the electrical signals from single or
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50

Rogers, Sylvia Caren 1957. "Efficient sampling for dynamic single-photon emission computed tomographic imaging." Thesis, The University of Arizona, 1990. http://hdl.handle.net/10150/278605.

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Our goal is to develop a single-photon emission computed tomography (SPECT) system for dynamic cardiac imaging so that heart disease may be more accurately evaluated. We have developed multiple, stationary, modular scintillation cameras that allow for dynamic imaging because of large detector area, large collection efficiency, high count-rate capability, and no motion of detector, collimator, or aperture. We make use of coded-aperture pinhole arrays because they increase photon-collection efficiency. The coded apertures allow for overlapping projections or multiplexing of an object onto the de
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