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POLICRYPS (an acronym of polymer liquid crystal polymer slices) is a nano/microcomposite structure made of slices of almost pure polymer alternated with films of well aligned nematic liquid crystal (NLC). The structure is obtained by irradiating a homogeneous syrup of NLC, monomer and curing agent molecules with an interference pattern of UV/visible light under suitable experimental and geometrical conditions; the spatial periodicity can be easily varied from an almost nanometric (200 nm) to a micrometric (15 µm) scale. Where the effect on an impinging reading light beam is concerned, the POLICRYPS can be utilized either in a transmission or a reflection configuration (depending on the geometry and substrate used) with negligible scattering losses, while the effect of spatial modulation of the refractive index (from polymer to NLC values) can be switched on and off by applying an external electric field of the …
IOP Publishing
Publication date: 
1 Feb 2009

Roberto Caputo, Antonio De Luca, Luciano De Sio, Luigia Pezzi, Giuseppe Strangi, Cesare Umeton, Alessandro Veltri, Rita Asquini, Antonio d’Alessandro, Domenico Donisi, Romeo Beccherelli, Andrey V Sukhov, Nelson V Tabiryan

Biblio References: 
Volume: 11 Issue: 2 Pages: 024017
Journal of Optics A: Pure and Applied Optics