Model for the photoinduced formation of diffraction gratings in liquid-crystalline composite materials

Veltri, A.; Caputo, R.; Umeton, C.; Sukhov, A.V.
May 2004
Applied Physics Letters;5/3/2004, Vol. 84 Issue 18, p3492
Academic Journal
We modelize the photoinduced formation of switchable diffraction gratings in polymer-based liquid-crystalline composite materials. The model assumes that redistribution of molecules is due to mass diffusion and incorporates a realistic kinetic description of polymerization processes. Numerical simulations predict two different kinds of structure that have already been experimentally observed. Two parameters governing the phenomenon are pointed out, which determine the structure that will be formed after the curing process has been completed. © 2004 American Institute of Physics.


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