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Optomechanical properties of stretched polymer dispersed liquid crystal films for scattering polarizer applications

J. Appl. Phys. 93, 3248 (2003); doi:10.1063/1.1554757

Issue Date: 15 March 2003

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Ichiro Amimori
Division of Engineering, Brown University, Providence, Rhode Island 02912

Nikolai V. Priezjev and Robert A. Pelcovits
Department of Physics, Brown University, Providence, Rhode Island 02912

Gregory P. Crawford
Division of Engineering and Department of Physics, Brown University, Providence, Rhode Island 02912
A scattering polarizer is created by subjecting a polymer dispersed liquid crystal film to tensile strain. The optomechanical properties of the film are investigated by simultaneously measuring the stress–strain and polarization dependent optical transmission characteristics. The correlation between transmittances of two orthogonal polarizations and the stress–strain curve reveals that the polymer orientation as well as the droplet shape anisotropy influences the liquid crystal alignment within the droplets. A Monte Carlo simulation based on the P. A. Lebwohl–G. Lasher [Phys. Rev. A 6, 426 (1972)] model is used to explain the subtle influence of polymer orientation on liquid crystal alignment. ©2003 American Institute of Physics.
History: Received 3 September 2002; accepted 19 December 2002
Permalink: http://link.aip.org/link/?JAPIAU/93/3248/1
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KEYWORDS and PACS

Keywords
PACS
  • 61.30.Pq
    Microconfined liquid crystals including droplets, cylinders, randomly confined liquid crystals, polymer dispersed liquid crystals and porous systems
  • 78.66.Qn
    Optical properties of polymers; organic compounds (thin films)
  • 68.60.Bs
    Mechanical and acoustical properties of thin films
  • 42.70.Df
    Liquid crystals (optical materials)
  • 42.70.Jk
    Optical polymers and other organic optical materials
  • YEAR: 2003

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PUBLICATION DATA

ISSN:
0021-8979 (print)   1089-7550 (online)
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