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Structural transitions in holographic polymer-dispersed liquid crystals
Journal article

Structural transitions in holographic polymer-dispersed liquid crystals

I Drevensek-Olenik, M Jazbinsek, M E Sousa, A K Fontecchio, G P Crawford and M Copic
Physical review. E, Statistical, nonlinear, and soft matter physics, v 69(5 Pt 1), pp 051703-051703
May 2004
PMID: 15244833

Abstract

Dynamic light scattering was used to analyze the structural and dynamic properties of nematic director field within liquid crystal domains formed in holographic polymer-dispersed liquid crystal transmission gratings. Samples prepared from two different types of prepolymer mixture: one curable with visible (VIS) and another curable with UV light were investigated. In both formulations a critical slowing down of thermal director fluctuations, signifying the second-order structural transition of the nematic director field was observed in the vicinity of some critical external electric field as well as close to some critical temperature. For VIS samples also the size and the shape of phase separated droplets and viscoelastic and surface anchoring parameters of the liquid crystalline (LC) material forming the droplets were deduced. The viscoelastic constants were found to significantly deviate from the viscoelastic parameters of the pure LC mixture.

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Domestic collaboration
International collaboration
Web of Science research areas
Physics, Fluids & Plasmas
Physics, Mathematical
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