Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/3324
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dc.contributor.advisorDinleyici, Mehmet Salihen
dc.contributor.authorYunus, Nasrettin-
dc.date.accessioned2014-07-22T13:51:20Z-
dc.date.available2014-07-22T13:51:20Z-
dc.date.issued2007en
dc.identifier.urihttp://hdl.handle.net/11147/3324-
dc.descriptionThesis (Master)--Izmir Institute of Technology, Electronics and Communication Engineering, Izmir, 2007en
dc.descriptionIncludes bibliographical references (leaves: 79-80)en
dc.descriptionText in English; Abstract: Turkish and Englishen
dc.descriptionxi, 82 leavesen
dc.description.abstractPolarization enhancement in liquid crystal display (LCD) backlighting systems comprises important part of works on improvement of the brightness. Optical films containing scatterer particles are used in these systems. Therefore, dielectric scatterer particles are greatly needed to be analyzed for their optical scattering properties, and especially for polarizing effects. Depending on the sizes relative to the wavelength and the shape of the particles various computation approaches have been developed based on electromagnetic scattering theories such as Mie scattering, T-matrix methods etc... Simulation programs of these approaches have been examined and applied for spherical and nonspherical particles. In general, for the particles those a few times large in size compared to the incident wavelength, the polarization differentiation is insignificant for a spherical particle compared to a spheroid one. And, the prolate spheroids with higher aspect ratio have been able to produce most significant differentiating figures. Polarization measurements have been carried on commercially available dielectric optical films of two different set and also on the films with/without nonspherical zeolite particles prepared in the laboratory. Since the commercial films consist of spherical scatters, they show no polarization discrimination at all. On the other hand existence of zeolite particles in the film resulted in significant polarization discrimination at forward scattering angle. The results for polarization discrimination properties of the prolate spheroid particles have been compared with the spherical ones. Consequently, the discrepancy induced on the polarization that way has a good potential to be used in improvement of the brightness.en
dc.language.isoenen_US
dc.publisherIzmir Institute of Technologyen
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subject.lccTK7871.15.F5 Y95 2007en
dc.subject.lcshPolarization (Light)en
dc.subject.lcshDielectric filmsen
dc.subject.lcshOpticsen
dc.titlePolarization effects of nonspherical scatterers in dielectric optical filmen_US
dc.typeMaster Thesisen_US
dc.institutionauthorYunus, Nasrettin-
dc.departmentThesis (Master)--İzmir Institute of Technology, Electrical and Electronics Engineeringen_US
dc.relation.publicationcategoryTezen_US
item.openairetypeMaster Thesis-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
item.languageiso639-1en-
item.cerifentitytypePublications-
item.grantfulltextopen-
Appears in Collections:Master Degree / Yüksek Lisans Tezleri
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