Formation of a grating of submicron nematic layers by photopolymerization of nematic-containing mixtures
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A submicron, spatially periodic, structure consisting of a sequence of oriented layers of a nematic liquid crystal (NLC), separated by isotropic polymeric walls, was obtained experimentally. This was accomplished by polymerization induced by the interference pattern of UV laser radiation in a NLC-containing prepolymer mixture. It was established that such a structure occurs when phase separation and nematic ordering are prevented during the polymerization process. These structures are the diffraction elements, whose efficiency is much greater than that of a standard grating of polymer-dispersed liquid crystals [1–4] which is obtained in the same initial mixture. Specifically, a diffraction efficiency of 60–70% was obtained for structures with the period Δ = 0.2 μm, even in mixtures where a grating with Δ < 6 μm cannot be obtained at all by the standard technique.
- R. L. Sutherland, V. P. Tondiglia, L. V. Natarajan, and T. J. Bunning, Chem. Mater. 5, 1533 (1993). CrossRef
- R. L. Sutherland, V. P. Tondiglia, and L. V. Natarajan, Appl. Phys. Lett. 64, 1074 (1994). CrossRef
- R. L. Sutherland, V. P. Tondiglia, L. V. Natarajan, et al., J. Nonlinear Opt. Phys. Mater. 5, 89 (1996).
- R. L. Sutherland, V. P. Tondiglia, L. V. Natarajan, et al., Opt. Lett. 20, 1325 (1995).
- D. Duca, A. V. Sukhov, and C. Umeton, Liq. Cryst. 26, 931 (1999).
- R. Caputo, A. V. Sukhov, and C. Umeton, J. Mol. Mater. 12, 192 (1999).
- P. W. Atkins, Physical Chemistry (Oxford Univ. Press, Oxford, 1987), p. 717.
- Formation of a grating of submicron nematic layers by photopolymerization of nematic-containing mixtures
Journal of Experimental and Theoretical Physics
Volume 91, Issue 6 , pp 1190-1197
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