期刊
POLYMER JOURNAL
卷 44, 期 4, 页码 306-314出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/pj.2011.141
关键词
birefringence; liquid-crystal display; nanocrystals; orientational birefringence; photoelastic birefringence; photonics; zero-zero-birefringence polymer
资金
- Japan Society for the Promotion of Science (JSPS)
We demonstrated that a method based on the analysis of both orientational birefringence (intrinsic birefringence) and photoelastic birefringence (photoelastic coefficient) is effective for designing polymers that are processed in a molten state and used in a glassy state. The designed polymer exhibits no birefringence for any orientation of the polymer main chains or under elastic deformation. Birefringence is close to zero even in injection-molded plates of the polymer. We have also shown that it is possible to compensate and control birefringence of polymers using inorganic nanocrystals, and we have obtained valuable information on the optimal size of nanocrystals for compensation and control of birefringence. Nanocrystals measuring similar to 200nm in length and 20nm in width are sufficiently small to compensate for birefringence, but sufficiently large to permit control of orientation by casting. Reverse birefringence wavelength dispersion of a polymer film containing nanocrystals was achieved by casting and heat drawing. Polymer Journal (2012) 44, 306-314; doi:10.1038/pj.2011.141; published online 11 January 2012
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