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Dissertations / Theses on the topic 'Light scattering method'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Shcherbakov, Alexey. "Light scattering calculation in plane dielectric layers containing micro / nanoparticles." Phd thesis, Université Jean Monnet - Saint-Etienne, 2012. http://tel.archives-ouvertes.fr/tel-00981512.

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There is presently a strong interest for rigorous methods that perform the electromagnetic analysis of dielectric media with complex dielectric permittivity distribution. The interest is motivated by both present and future applications in the design and manufacturing of optical elements and optoelectronic devices. The level that the microstructuring technologies have now reached calls for fast, memory sparing, and rigorous numerical methods capable of solving and optimizing large structure parts whose characteristics do represent the optical function of the whole structure. Although the major

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2

Liu, Yang, and Ziyu Wang. "The Numerical Computation Method of Physical Quantity of Dust Concentration Based on Matlab." Thesis, Högskolan i Gävle, Avdelningen för elektronik, matematik och naturvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-19149.

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With the rapid development of the industry all over the world, the consumption of fossil fuel of human activities has reached an extremely high level which result in an incredible dust emission level nowadays. As one of the major environment challenges today, dust pollution has become a vital issue that the human beings have to face and resolve. To tackle the dust pollution problem, a reliable measurement of the dust concentration level is essential. In recent years, methods with different principles are used to detect the dust concentration have been developed. The methods developed based

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Charest, Abigail J. "Investigation of Physical Characteristics Impacting Fate and Transport of Viral Surrogates in Water Systems." Digital WPI, 2015. https://digitalcommons.wpi.edu/etd-dissertations/54.

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A multi-scale approach was used to investigate the occurrence and physical characteristics of viral surrogates in water systems. This approach resulted in a methodology to quantify the dynamics and physical parameters of viral surrogates, including bacteriophages and nanoparticles. Physical parameters impacting the occurrence and survival of viruses can be incorporated into models that predict the levels of viral contamination in specific types of water. Multiple full-scale water systems (U.S., Italy and Australia) were tested including surface water, drinking water, stormwater and wastewat

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4

Zhai, Pengwang. "A fourth-order symplectic finite-difference time-domain (FDTD) method for light scattering and a 3D Monte Carlo code for radiative transfer in scattering systems." [College Station, Tex. : Texas A&M University, 2006. http://hdl.handle.net/1969.1/ETD-TAMU-1839.

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5

Haverland, R. L., D. F. Post, L. R. Cooper, and E. D. Shirley. "Estimation of Soil Texture and Plant Available Water by Correlation with the Laser Light-Scattering Method." Arizona-Nevada Academy of Science, 1985. http://hdl.handle.net/10150/296363.

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From the Proceedings of the 1985 Meetings of the Arizona Section - American Water Resources Association and the Hydrology Section - Arizona-Nevada Academy of Science - April 27, 1985, Las Vegas, Nevada

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6

Alexander, Jennifer Mary. "Optical properties of mineral dust aerosol including analysis of particle size, composition, and shape effects, and the impact of physical and chemical processing." Diss., University of Iowa, 2015. https://ir.uiowa.edu/etd/1819.

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Atmospheric mineral dust has a large impact on the earth’s radiation balance and climate. The radiative effects of mineral dust depend on factors including, particle size, shape, and composition which can all be extremely complex. Mineral dust particles are typically irregular in shape and can include sharp edges, voids, and fine scale surface roughness. Particle shape can also depend on the type of mineral and can vary as a function of particle size. In addition, atmospheric mineral dust is a complex mixture of different minerals as well as other, possibly organic, components that have been m

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7

Stewart-James, Samantha Ann. "Development of a microfluidic flow cytometry platform with fluorescence and light scattering detection for the rapid characterization of circulating tumor cells." Thesis, Kansas State University, 2015. http://hdl.handle.net/2097/19078.

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Master of Science<br>Department of Chemistry<br>Christopher T. Culbertson<br>Circulating tumor cells (CTCs) have become a key component in the identification and treatment of cancer. Once dislodged from the main tumor, CTCs travel through the bloodstream and cause metastasis. Early detection and identification of these cells can help in the evaluation and prognosis of various types of cancer, as well as assisting in patient treatments by determining the spread of the disease. Here, a high-throughput microfluidic analysis technique is described that can efficiently detect and identify cells,

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8

Su, Rong. "Assessment of optical coherence tomography for metrology applications in high-scattering ceramic materials." Licentiate thesis, KTH, Mätteknik och optik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-98621.

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Large-scale and cost-effective manufacturing of ceramic micro devices based on tape stacking requires the development of inspection systems to perform high-resolution in-process quality control of embedded manufactured cavities, metal structures and defects. In this work, alumina ceramic samples are evaluated by optical coherence tomography (OCT) operating at 1.3μm wavelength and some dimensional data are obtained by dedicated image processing and segmentation. Layer thicknesses can be measured and laser-machined channels can be verified embedded at around 100μm depth. Moreover, detection of i

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9

Sharifian, Gh Mohammad. "Adsorption and Transport of Drug-Like Molecules at the Membrane of Living Cells Studied by Time-Resolved Second-Harmonic Light Scattering." Diss., Temple University Libraries, 2018. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/524558.

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Chemistry<br>Ph.D.<br>Understanding molecular interactions at the surfaces of cellular membranes, including adsorption and transport, is of fundamental importance in both biological and pharmaceutical studies. At present, particularly with respect to small and medium size (drug-like) molecules, it is desirable to gain an understanding of the mechanisms that govern membrane adsorption and transport. To characterize drug-membrane interactions and mechanisms governing the process of molecular uptake at cellular membranes in living organisms, we need to develop effective experimental techniques to

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10

Malm, Mikaela. "Drug Analysis : Bioanalytical Method Development and Validation." Doctoral thesis, Uppsala universitet, Analytisk kemi, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8547.

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This thesis describes bioanalytical methods for drug determination in biological matrixes, with drugs in focus used against diseases largely affecting low-income countries. Solid-phase extraction is used for sample cleanup, and processed samples are analyzed by liquid chromatography. Developed bioanalytical methods are validated according to international guidelines. Eflornithine (DFMO) is a chiral drug, used for treating human African trypanosomiasis. A bioanalytical method for determination of DFMO enantiomers in plasma is presented. The enantiomers are detected by evaporative light-scatteri

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11

Kennedy, Christopher. "Properties of High Energy Laser Light Transmission through Large Core Optical Cables." Master's thesis, University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5797.

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Laser induced damage is of interest in studying the transmission of large amounts of optical energy through step-index, large core multimode fibers. Optical fibers often have to be routed around objects when laser light is being transmitted between two locations which require the fiber to bend into a curve. Depending on how tight the bend is, this can result in transmission losses or even catastrophic damage when the energy density of the laser pulse exceeds the damage threshold of silica glass. Waveguide theory predicts that light traveling through a bend will form whispering-gallery modes

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12

Wysoczanski, Dariusz. "Diffusion multiple de la lumière : application à l'orientation de fibres dans des matériaux composites." Rouen, 1996. http://www.theses.fr/1996ROUES044.

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Ce mémoire décrit, tant sur le plan de la simulation que sur le mode expérimental, une méthode optique de détermination de l'orientation des fibres contenues dans un matériau composite. La théorie de base de la diffusion simple et multiple de la lumière par un cylindre et un ensemble de cylindres ainsi que les résultats de simulation numérique sont présentés. Les résultats de mesures expérimentaux sont obtenus avec un prototype d'acquisition et de traitement des images de diffusion de la lumière.

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13

Herning, Thierry. "Etude de la transition sol-gel dans les gels de gelatine par diffusion quasi-elastique de la lumiere." Paris 6, 1988. http://www.theses.fr/1988PA066294.

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14

Ajrouche, Hussein. "Mesures optiques d'imbrûlés - applications aux émissions des moteurs Diesel et des réacteurs." Rouen, 1995. http://www.theses.fr/1995ROUES021.

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Une méthode optique in situ et non intrusive fondée sur la mesure simultanée de l'extinction et de la diffusion de la lumière par un nuage de particules a été mise au point. Elle a été utilisée pour caractériser le diamètre et la densité particulaire des suies émises par les véhicules Diesel et les turboréacteurs. Nous avons en particulier pu suivre dans un premier temps l'évolution des particules lors des accélérations successives d'un moteur Diesel. Il apparaît que le diamètre croît au cours de l'accélération alors que le nombre de particules tend à décroître. On retiendra comme ordre de gra

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15

Martinez, Alexandre Souto. "Statistique de polarisation et effet Faraday en diffusion multiple de la lumière." Grenoble 1, 1993. http://www.theses.fr/1993GRE10082.

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Statistique de polarisation et effet faraday en diffusion multiple de la lumiere. L'analyse traditionnelle de la propagation de la lumiere en milieu aleatoire suppose que les ondes sont des champs scalaires et que les diffuseurs sont ponctuels. Nous avons voulu etudier des situations plus realistes. La nature vectorielle du champ electromagnetique et l'anisotropie de diffusion sont explicitement prises en compte par la theorie de mie. Pour realiser cet objectif, nous avons ecrit et mis au point un code de simulation numerique utilisant l'algorithme de monte carlo. Nous nous sommes interesses t

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16

Moghaddam, Abolghasem Mobaraki. "Advanced methods of observing surface plasmon polaritons and magnons." Thesis, University of Salford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.292905.

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17

Jarosz, Wojciech. "Efficient Monte Carlo methods for light transport in scattering media." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2008. http://wwwlib.umi.com/cr/ucsd/fullcit?p3320228.

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Thesis (Ph. D.)--University of California, San Diego, 2008.<br>Title from first page of PDF file (viewed November 10, 2008). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 188-199) and index.

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18

Lhuissier, Gavrovic Natalija. "Caractérisation de suies dans les flammes de prémélange par diffusion quasiélastique de la lumière." Rouen, 1987. http://www.theses.fr/1987ROUES020.

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L'application de la diffusion quasiélastique de la lumière a permis la caractérisation de particules de suies, générées dans des flammes CH4O2 et C2H6O2. Les hypothèses utilisées pour la modélisation des interactions lumière-particule et particule-écoulement sont mises en évidence

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Cowen, John Alistair. "Brillouin light scattering from magnetic thin films and multilayers." Thesis, University of Salford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301413.

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20

Moulin, Stéphane. "Contribution à l'étude des mécanismes de nucléation et de croissance des couches minces de diamant par mesures in-situ." Université Joseph Fourier (Grenoble), 1996. http://www.theses.fr/1996GRE10018.

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Des mesures optiques in-situ de reflectivite, diffusion elastique, et spectroscopie de reflectivite differentielle, ont permis d'etudier les mecanismes de nucleation et de croissance des couches minces de diamant. L'elaboration des echantillons a ete effectuee par depot chimique en phase vapeur assiste par filament chaud, a partir d'un melange de methane et d'hydrogene. La diffusion elastique de la lumiere a ete reliee a la rugosite de surface de l'echantillon. Elle donne alors acces a la taille des cristaux de diamant. Leurs cinetiques de croissance peuvent ainsi etre etudiees. On observe en

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21

Stolker, T., C. Dominik, M. Min, A. Garufi, G. D. Mulders, and H. Avenhaus. "Scattered light mapping of protoplanetary disks." EDP SCIENCES S A, 2016. http://hdl.handle.net/10150/622692.

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Context. High-contrast scattered light observations have revealed the surface morphology of several dozen protoplanetary disks at optical and near-infrared wavelengths. Inclined disks offer the opportunity to measure part of the phase function of the dust grains that reside in the disk surface which is essential for our understanding of protoplanetary dust properties and the early stages of planet formation. Aims. We aim to construct a method which takes into account how the flaring shape of the scattering surface of an optically thick protoplanetary disk projects onto the image plane of the o

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22

Ren, Kuan Fang. "Diffusion des faisceaux feuille laser par une particule sphérique et applications aux écoulements diphasiques." Rouen, 1995. http://www.theses.fr/1995ROUES012.

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Les faisceaux de type feuille laser (faisceau gaussien de section elliptique), sont de plus en plus utilisés dans les applications des techniques de mesure pour élargir le domaine mesurable ou pour simplifier le traitement des signaux. Cette thèse concerne l'extension de la théorie de Lorenz-Mie généralisée (TLMG) à la diffusion des faisceaux feuilles laser par une particule sphérique et ses applications aux écoulements diphasiques. Une description mathématique du faisceau feuille laser est dérivée par deux méthodes différentes. L'intérêt de la TLMG dépend fortement de notre capacité pour calc

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23

Moeferdt, Matthias. "Nonlocal and Nonlinear Properties of Plasmonic Nanostructures Within the Hydrodynamic Drude Model." Doctoral thesis, Humboldt-Universität zu Berlin, 2017. http://dx.doi.org/10.18452/18129.

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In dieser Arbeit werden die nichtlokalen sowie nichtlinearen Eigenschaften plasmonischer Nanopartikel behandelt, wie sie im hydrodynamischen Modell enthalten sind. Das hydrodynamische Materialmodell stellt eine Erweiterung des Drude Modells dar, in der Korrekturen in der Beschreibung des Elektronenplasmas berücksichtigt werden. Einer ausführlichen Einführung des Materialmodells folgt eine analytische Diskussion der Auswirkungen der Nichtlokalität am Beispiel eines einzelnen Zylinders. Hierbei werden die durch die Nichtlokalität herbeigeführten Frequenzverschiebungen in den Streu- und Absorptio

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24

Charon, Julien. "Résolution par la méthode de Monte Carlo de formulations intégrales du problème de diffusion électromagnétique par une suspension de particules à géométries complexes." Thesis, Perpignan, 2017. http://www.theses.fr/2017PERP0048/document.

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L’étude du problème de la diffusion d’une onde électromagnétique par une suspension de particules non sphériques est une difficulté récurrente dans de nombreux domaines de la recherche et de l’ingénierie. Cela implique d’utiliser des dispositifs expérimentaux hautement spécialisés ou de résoudre les équations de Maxwell, ce qui représente un véritable défi lorsque les particules sont de géométries complexes et avec des distributions statistiques de taille, d’orientation et de forme. L’objectif de la présente thèse est d’explorer l’utilisation de la méthode de Monte Carlo pour résoudre des form

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Alves, Keila dos Santos. "Obten??o de pol?meros graftizados de quitosana e estudo das propriedades f?sico-qu?micas para aplica??o na ind?stria do petr?leo." Universidade Federal do Rio Grande do Norte, 2013. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17794.

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Made available in DSpace on 2014-12-17T15:42:30Z (GMT). No. of bitstreams: 1 KeilaSA_TESE.pdf: 6694216 bytes, checksum: df1754b48618e11f2ae95e003ae20c2c (MD5) Previous issue date: 2013-12-27<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior<br>Chitosan is a biopolymer derived from the shells of crustaceans, biodegradable, inexpensive and renewable with important physical and chemical properties. Moreover, the different modifications possible in its chemical structure generate new properties, making it an attractive polysaccharide owing to its range of potential applications. Pol

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Heiderich, Anne. "Diffusion multiple en milieu non linéaire ou anisotrope." Université Joseph Fourier (Grenoble), 1995. http://www.theses.fr/1995GRE10200.

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Cette these est composee de trois parties: 1) une etude analytique de la retrodiffusion coherente de la lumiere en milieu desordonne et faiblement non lineaire: en utilisant une equation auto-consistante du type bethe-salpeter pour l'intensite moyenne, nous calculons le cone de retrodiffusion en milieu non lineaire. Le domaine de validite de la theorie est obtenu et discute. De plus, nous calculons le cone de retrodiffusion pour une couche mince non lineaire immergee dans un milieu lineaire. 2) une etude analytique du champ moyen dans des cristaux liquides en phase nematique orientee en presen

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Grube, Svenja [Verfasser]. "Characterisation of the homogeneity of thiol-ene hydrogels by light-scattering methods / Svenja Grube." Clausthal-Zellerfeld : Universitätsbibliothek Clausthal, 2013. http://d-nb.info/103202173X/34.

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28

Perkins, Elaine Ann. "An investigation of defect formation and growth in epoxy resin using light scattering methods." Thesis, London Metropolitan University, 1989. http://repository.londonmet.ac.uk/3400/.

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This work has used laser light scattering to investigate the possible existence of inhonogeneities and other defects in an epoxy resin system, and the role these defects play in the mechanical and electrical failure of the polymer. Mie Theory was used in the analysis of the data throughout this thesis. Ultra clean fully degassed samples were prepared to ensure any scatterers observed were Inherent to the sample. It was discovered that inhomogeneities and microvoids do exist in the fully cured and degassed ultra clean samples before stressing. Reproducible trends in inhomogeneity behaviour were

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Mignon, Hervé. "Anémométrie phase Doppler et particules non sphériques : cas des cylindres et des ellipsoïdes." Rouen, 1997. http://www.theses.fr/1997ROUES004.

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L'anémométrie phase Doppler est une technique de mesure optique utilisée pour évaluer la taille et la vitesse de particules sphériques et homogènes en mouvement. Ce mémoire est dédié à l'extension de cette technique aux particules non sphériques. En raison de leurs importances tant fondamentales qu'appliquées, ce manuscrit se focalise sur les cylindres infiniment longs et les particules ellipsoïdes. La géométrie dite plane est employée pour déterminer la taille d'une particule cylindrique arbitrairement orientée. La réponse des géométries dites planes et standard est étudiée pour des particule

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Beckman, Rehnman Jeannette. "New methods to evaluate the effect of conventional and modified crosslinking treatment for keratoconus." Doctoral thesis, Umeå universitet, Oftalmiatrik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-110531.

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Background: Today corneal crosslinking with ultraviolet-A photoactivation of riboflavin is an established method to halt the progression of keratoconus. In some cases, when the refractive errors are large and the visual acuity is low, conventional corneal crosslinking may not be sufficient. In these cases it would be desirable with a treatment that both halts the progression and also reduces the refractive errors and improves the quality of vision. Aims: The aims of this thesis were to determine whether mechanical compression of the cornea during corneal crosslinking for keratoconus using a s

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Ogbuoji, Ebuka. "Protein Crystallization Methods and Apparatus." University of Toledo / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1556924307276754.

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Berberoglu, Halil. "Numerical Simulations On Stimulated Raman Scattering For Fiber Raman Amplifiers And Lasers Using Spectral Methods." Phd thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/3/12608986/index.pdf.

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Optical amplifiers and lasers continue to play its crucial role and they have become an indispensable part of the every fiber optic communication systems being installed from optical network to ultra-long haul systems. It seems that they will keep on to be a promising future technology for high speed, long-distance fiber optic transmission systems. The numerical simulations of the model equations have been already commercialized by the photonic system designers to meet the future challenges. One of the challenging problems for designing Raman amplifiers or lasers is to develop a numerica

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Bryant, Ross Becker 1957. "Laser light scattering and geographic information systems: Advanced methods for soil particle size analysis and data display." Thesis, The University of Arizona, 1990. http://hdl.handle.net/10150/278039.

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Laser light scattering (LLS) is an alternate method for determining soil particle size. Since the majority of information on particle size analysis has traditionally been derived from sedimentation methods, it is important to be able to draw a relationship between these two methods. Twenty four soil samples from a set of 214 samples analyzed by LLS were selected and also analyzed using sedimentation techniques. Particle size percentages were obtained in five different size ranges and then these two techniques were compared. Linear regression equations were developed that convert numbers obtain

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Dogu, Saadet [Verfasser]. "Influence of temperature on light scattering of poly-N-isopropylacrylamide hydrogels synthesized by two different cross-linking methods / Saadet Dogu." Clausthal-Zellerfeld : Universitätsbibliothek Clausthal, 2013. http://d-nb.info/1038449316/34.

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Vaidyanathan, Vidya. "Different methods for particle diameter determination of low density and high density lipoproteins-Comparison and evaluation." [College Station, Tex. : Texas A&M University, 2006. http://hdl.handle.net/1969.1/ETD-TAMU-1170.

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Hajji, Mohammed Saïd. "Etude comparative de l'association hydrophobe en solution aqueuse de tensioactifs anioniques et cationiques et de divers alcane-diols et alcane-triols par mesures des masses volumiques, de la diffusion élastique et quasi-élastique de la lumière et des." Paris 13, 1987. http://www.theses.fr/1987PA132016.

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Erbe, Andreas. "Ellipsometrische Lichtstreuung als neue Methode zur Charakterisierung der Grenzfläche von Kolloiden." Phd thesis, Universität Potsdam, 2004. http://opus.kobv.de/ubp/volltexte/2005/165/.

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Die ellipsometrische Lichtstreuung wird als eine neue, leistungsfähige Methode zur Charakterisierung von Schichten um kolloidale Partikel vorgestellt. Theoretische Grundlage der Methode ist die Mie-Theorie der Lichtstreuung. Experimentell wurde die Polarisationsoptik eines Null-Ellipsometers in den Strahlengang eines Lichtstreuaufbaus eingebaut. Wie in der Reflexionsellipsometrie um den Brewsterwinkel herum erhält man in der ellipsometrischen Streuung einen Winkelbereich, in dem die Methode empfindlich auf Schichten an der Oberfläche der Partikel ist. An verschiedenen Systemen wurde die Taugli

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Bueche, Blaine. "The Effect of PEG-Insulin and Insulin Hexamer Assembly on Stability in Solution and Dry Powders. Hexamer Assembly of PEGylated-Insulin and Insulin Studied by Multi-Angle Light Scattering to Rationally Choose the pH and Zinc Content for Analytical Methods and Formulations of Dry Powders." Thesis, University of Bradford, 2010. http://hdl.handle.net/10454/5688.

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The objective of this research is to further define the relationship between the charge state of insulin, and the self assembly properties of insulin and PEGylated insulin in solution. Polyethylene glycol (PEG) chains were covalently attached to insulin in order to evaluate their impact on insulin's systemic duration of action after pulmonary dosing. This thesis will focus on the assembly properties of the PEG-insulin and insulin, and also demonstrate how the charge state, which was modified by the covalent attachment of PEG, relates to different modes of behavior by anion and cation exchange

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Giardini, Francesco. "Morpho-functional investigation of cardiac remodeling in an arrhythmogenic mouse model by advanced optical methods." Doctoral thesis, Università di Siena, 2022. http://hdl.handle.net/11365/1211015.

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Severe remodeling processes may occur in the heart due to both genetic and non-genetic diseases. Structural remodeling, such as collagen deposition (fibrosis) and cellular misalignment, can affect electrical conduction at different orders of magnitude and, eventually, lead to arrhythmias. In this scenario, arrhythmogenic cardiomyopathy (ACM) is an inherited heart disease that involves ventricular dysfunction, arrhythmias, and localized replacement of contractile fibers with fibrofatty scar tissue. Unfortunately, nowadays, redicting the impact of fine structural alterations on the electrical d

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Bátrla, Martin. "Výzkumný 3D skener pro účely skenování problematických povrchů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-401059.

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This diploma thesis deals with design of 3D scanner for scanning problematic surfaces. The research part introduces the problem of 3D scanning and describes causes of random errors. Further, it contains a description and division of methods that leads to their elimination. The practical part of the thesis deals with design and description of hardware and software parts of the 3D scanner. The output of this work is device that is able to implement and compare quality of codification methods mainly for scanning of problematic surfaces. The functionality of equipment was verified by experimental

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Valečková, Vendula. "Využití metod rozptylu světla při studiu tvorby polyelektrolytových komplexů v systému biopolymer-tenzid." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2017. http://www.nusl.cz/ntk/nusl-316183.

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This master thesis is dealing with the use of light scattering techniques in the study on formation of polyelectrolyte complexes in the system biopolymer-surfactant. Sodium hyaluronate was chosen as biopolymer and cetyltrimethylammonium bromide and karbethopendecinium bromide were selected as surfactants. The first precipitation experiments were performed to determine the optimal concentration range of surfactants for subsequent titration measurements performed on Zetasizer Nano ZS and for SEC-MALS analysis. The key parameters obtained from these measurements were the values of critical aggreg

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Varytis, Paraschos. "Tailored disorder and anisotropic scattering in photonic nanostructures." Doctoral thesis, Humboldt-Universität zu Berlin, 2019. http://dx.doi.org/10.18452/20861.

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In dieser Arbeit untersuchen wir das optische Antwortverhalten von planaren Spektrometern basierend auf ungeordneten Streuzentren, dielektrischen Verbundnanopartikeln mit einer plasmonischer Ummantelung, sowie volldielektrischen magnetooptischen formveränderten Metaoberflächen. Dafür benutzen wir sowohl Mie und Mehrfach-Streutheorie als auch ein unstetiges Galerkin Zeitraumverfahren basierend auf finiten Elementen zur numerischen Berechnung der elektromagnetischen Felder. Wir stellen insbesondere eine theoretische Designstudie vor, um ungeordnete Spektrometer mit hoher spektraler Auflösung

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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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Jada, Amane. "Etude de la structure et de la dynamique de microemulsions eau dans huile." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13101.

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Etude des microemulsions qui sont des solutions transparentes constituees de fines gouttelettes d'eau dispersees dans une phase continue riche en huile. Determination par declin de fluorescence, diffusion de lumiere et conductivite electrique de l'influence de la nature de l'huile, de la temperature et de la structure du tensioactif sur la taille des gouttelettes et les processus d'echange de matiere entre gouttelettes

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Saleh, Jehad. "A Membrane Separation Process for Biodiesel Purification." Thesis, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/19730.

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In the production of biodiesel via the transesterification of vegetable oils, purification to international standards is challenging. A key measure of biodiesel quality is the level of free glycerol in the biodiesel. In order to remove glycerol from fatty acid methyl ester (FAME or biodiesel), a membrane separation setup was tested. The main objective of this thesis was to develop a membrane process for the separation of free glycerol dispersed in FAME after completion of the transesterification reaction and to investigate the effect of different factors on glycerol removal. These factors incl

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Kotouček, Jan. "Příprava a charakterizace komplexních nanočástic s využitím zejména frakcionace v tokovém poli a pokročilých spektroskopických metod." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2020. http://www.nusl.cz/ntk/nusl-432947.

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Liposomes are versatile biocompatible and biodegradable carriers for a variety of medical applications. As the first nanoparticles, they have been approved for pharmaceutical use so far, and many liposome-based preparations are in clinical trials. Classical methods of liposome preparation represent potential limitations in technology transfer from laboratory to industrial scale. New, microfluidic techniques overcome these limitations and offer new possibilities for controlled, continuous preparation of liposomal particles in a laboratory and industrial scale. An important element in the develo

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Hansson, Peter. "Surface Characterization using Radiometric and Fourier Optical Methods." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3569.

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Bongono, Juilien. "Caracterisation des suspensions par des methodes optiques. modelisation par reseaux de neurones." Thesis, Saint-Etienne, EMSE, 2010. http://www.theses.fr/2010EMSE0577/document.

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La sédimentation des suspensions aqueuses de particules minérales microniques, polydisperses et concentrées a été analysée à l’aide du Turbiscan MA 2000 fondé sur la diffusion multiple de la lumière, en vue d’établir la procédure qui permet de déceler la présence d’une morphologie fractale, puis de déduire les règles de comportements des suspensions fractales par la modélisation avec les réseaux de neurones. Le domaine des interactions interparticulaires physicochimiques (0 à 10% volumique en solide) a été privilégié.La méthodologie de détermination de la structure multifractale des agglomérat

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Caumont-Prim, Chloé. "Détermination de la distribution de taille des nanoparticules de suie par analyse du spectre d'extinction et de diffusion angulaire de la lumière." Phd thesis, INSA de Rouen, 2013. http://tel.archives-ouvertes.fr/tel-00800137.

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Le but de ce travail est de déterminer par méthodes optiques la distribution de taille (pdf) des nanoparticules de suie, agrégats de morphologie fractale. Après des études préliminaires qui utilisent DDSCAT pour valider la théorie RDG-FA et permettent de convertir un rayon de giration en rayon de mobilité, deux diagnostics optiques sont étudiés. Le premier consiste à exploiter une mesure d'extinction spectrale de la lumière. Nous montrons que pour exploiter ce signal, il faut connaître les propriétés optiques des suies, leur préfacteur et dimension fractale, la loi de distribution et le diamèt

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Graciani, Guillaume. "Three-dimensional stochastic interferometry : theory and applications to high-sensitivity optical metrology and light scattering amplification Random dynamic interferometer:cavity amplified speckle spectroscopy using a highly symmetric coherent fieldcreated inside a closed Lambertian optical cavity 3D stochastic interferometry detects picometer dynamics of an optical volume Cavity Amplified Speckle Spectroscopy expands lightscattering methods to transparent or miniature samples Super-resolution provided by the arbitrarily strongsuperlinearity of the blackbody radiation." Thesis, Institut polytechnique de Paris, 2020. http://www.theses.fr/2020IPPAX058.

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La puissance de la métrologie optique nécessite généralement des géométries simples avec un alignement précis et une phase optique bien contrôlée. Dans cette thèse, nous développons plutôt la notion d'interférométrie du chaos, en utilisant un champ optique ayant un désordre géométrique maximal et une phase aléatoire. Nous montrons que la stochasticité conduit à une très grande sensibilité interférométrique et ouvre la possibilité d'un large éventail de nouvelles mesures optiques et d'une nouvelle méthode que nous appelons la Cavity Amplified Speckle Spectroscopy (Spectroscopie de Speckle Ampli

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