A polymer stabilized liquid crystal film with thermal switching characteristics between light transmission and adjustable light scattering

A homeotropically oriented polymer network stabilized liquid crystal film with a smectic A (SmA)–chiral nematic (N∗) phase transition was prepared. Thermal switching between light transmission from homeotropically oriented SmA phase and adjustable light scattering from N∗ phase with a focal conic te...

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Bibliographic Details
Published in:Optical materials 2009-06, Vol.31 (8), p.1163-1166
Main Authors: Pan, Guohui, Cao, Hui, Guo, Renwei, Li, Wenbo, Guo, Jinbao, Yang, Zhou, Huang, Wei, He, Wanli, Liang, Xiaokai, Zhang, Duowei, Yang, Huai
Format: Article
Language:English
Subjects:
Chiral nematic
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Homeotropically oriented polymer network
Liquid crystals
Optical materials
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of bulk materials and thin films
Optics
Physics
Smectic A
Thermooptical and photothermal effects
Wave optics
Wave propagation, transmission and absorption
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Summary:A homeotropically oriented polymer network stabilized liquid crystal film with a smectic A (SmA)–chiral nematic (N∗) phase transition was prepared. Thermal switching between light transmission from homeotropically oriented SmA phase and adjustable light scattering from N∗ phase with a focal conic texture can be achieved by adjusting the ratio of two chiral dopants which demonstrate different variation tendency of helical twisting power with increasing temperature.
ISSN:0925-3467
1873-1252
DOI:10.1016/j.optmat.2008.12.007