Light transmission, linear dichroism and birefringence of nematic/polymer dispersions
作者:
O.A. APHONIN,
V.F. NAZVANOV,
期刊:
Liquid Crystals
(Taylor Available online 1997)
卷期:
Volume 23,
issue 6
页码: 845-859
ISSN:0267-8292
年代: 1997
DOI:10.1080/026782997207777
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
A theoretical study of light transmission, linear dichroism and birefringence of partially ordered dispersions of bipolar nematic droplets in a polymer matrix is presented. The treatment rests on the single scattering approach to an ensemble of uncorrelated and noninteracting anisotropic particles. Theoretical evaluations of the extinction cross sections and phase functions are performed in the anomalous diffraction approximation. Four basic model systems are analysed: PDLC and NCAP films in an external electric field, and PDLC and NCAP films under uniaxial mechanical deformation. The calculated dependences of the generalized parameters characterizing the light transmission, dichroism and birefringence on the angle of incidence of the probing light, droplet size and shape, refractive indices of the LC and polymer, and parameters of the external field are presented graphically and discussed in detail.
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