Validation of a scattering state model for liquid crystal polymer composites
作者:
D. Bosc,
C. Trubert,
B. Vinouze,
M. Guilbert,
期刊:
Applied Physics Letters
(AIP Available online 1996)
卷期:
Volume 68,
issue 18
页码: 2489-2490
ISSN:0003-6951
年代: 1996
DOI:10.1063/1.115830
出版商: AIP
数据来源: AIP
摘要:
With a view to making highly efficient light shutters, the object of this study is to know the best structure of the liquid crystal polymer composite yielding a high extinction ratio. The main feature of this letter shows that experimental results are consistent with anomalous diffraction approach. For our demonstration, we made polymer dispersed liquid crystal (PDLC) cells having different droplet radius (a), ranging from 0.5 to 1 &mgr;m. In addition, a strong wavelength sensitivity with these radii is measured in the visible region. Beyond one micron, droplets yield higher transmission as regards both the wavelength and the optical anisotropy of the liquid crystal. These results bring forward that the most efficient PDLC films must follow the optimization relation:a(&Dgr;n)/&lgr;=0.3, where &lgr; is the wavelength and &Dgr;nthe liquid crystal anisotropy. ©1996 American Institute of Physics.
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