Spelling suggestions: "subject:"liquid crystals"" "subject:"iiquid crystals""
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An investigation of the effects of shearfree deformation and the role of miscibility on the structure and properties of in situ thermoplastic composites /De Souza, Jose Paulino, January 1994 (has links)
Thesis (Ph. D.)--Virginia Polytechnic Institute and State University, 1994. / Vita. Abstract. Includes bibliographical references. Also available via the Internet.
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Cellulose-based fibers from liquid crystalline solutions /Davé, Vipul, January 1992 (has links)
Thesis (Ph. D.)--Virginia Polytechnic Institute and State University, 1992. / Vita. Abstract. Includes bibliographical references. Also available via the Internet.
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A study of optical propagation in polymer liquid crystal nanocomposites for photolithography applications /Fox, Anna E. Fontecchio, Adam. January 2009 (has links)
Thesis (Ph.D.)--Drexel University, 2009. / Includes abstract and vita. Includes bibliographical references (leaves 229-241).
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Study of spectral sensing using electro-optic films /Rai, Kashma K. Fontecchio, Adam. January 2010 (has links)
Thesis (Ph.D.)--Drexel University, 2010. / Includes abstract and vita. Includes bibliographical references (leaves 158-164).
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Photo-aligned LC cell with weak anchoring energy and specific profiles : physics & applications /Liu, Zhijian. January 2006 (has links)
Thesis (M.Phil.)--Hong Kong University of Science and Technology, 2006. / Includes bibliographical references. Also available in electronic version.
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Engineered interfaces for liquid crystal technology /Shah, Hemang J. Fontecchio, Adam. January 2007 (has links)
Thesis (Ph. D.)--Drexel University, 2007. / Includes abstract and vita. Includes bibliographical references (leaves 177-188).
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Νέα μέθοδος για τη μέτρηση του χρόνου αποκατάστασης του κατευθυντή σε μια θερμοτροπική νηματική μεσοφάσηΠαπαδόπουλος, Παναγιώτης 23 October 2009 (has links)
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Free-space switching for optical fibre networksWarr, Stephen Thomas January 1996 (has links)
No description available.
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Liquid crystallinity of a semiflexible polymer : acetoxypropyl celluloseLaivins, Gunar V. January 1984 (has links)
No description available.
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Fast Response Liquid Crystal DevicesWu, Yung-Hsun 01 January 2006 (has links)
Liquid crystal (LC) has been widely used for displays, spatial light modulators, variable optical attenuators (VOAs) and other tunable photonic devices. The response time of these devices is mainly determined by the employed liquid crystal material. How to obtain fast response for the LC devices is a fundamentally important and technically challenging task. In this dissertation, we investigate several methods to improve liquid crystal response time, for examples, using dual-frequency liquid crystals, polymer stabilized liquid crystals, and sheared polymer network liquid crystals. We discover a new class of material, denoted as sheared polymer network liquid crystal (SPNLC) which exhibits a submillisecond response time. First, dual-frequency liquid crystals and polymer network methods are demonstrated as examples for the variable optical attenuators. Variable optical attenuator (VOA) is a key component in optical communications. Especially, the sheared PNLC VOA shows the best result; its dynamic range reaches 43 dB while the response time is in the submillisecond range at 1550 nm wavelength, which is 50 times faster than the commercial LC-based VOA. Second, we report a new device called axially-symmetric sheared polymer network liquid crystals (AS-SPNLC) and use it as LC devices. An axially-symmetric sheared polymer network liquid crystal has several attractive features: 1) it is polarization independent, 2) it has gradient phase change, and 3) its response time is fast. It can be used for polarization converter and divergent LC lens. In addition, a new method for simultaneously measuring the phase retardation and optic axis of a compensation film is demonstrated using an axially-symmetric sheared polymer network liquid crystal. This simple technique can be used for simultaneously measuring the optic axis and phase retardations of both A- and C-plates. These compensation films have been used extensively in wide-view LCD industry. Therefore, this method will make an important impact to the LCD industry.
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