Abstract
Alignment of liquid-crystal filler molecules and the electro-optical effect in composite photonic crystals based on grooved silicon are studied. It is found that the nematic liquid crystal molecules that fill the grooves are predominantly aligned in a planar configuration with respect to the silicon walls. The liquid crystal molecules are realigned homeotropically with respect to the groove walls under the influence of an electric field. The effect detected can be used to adjust the photonic band gap of a one-dimensional photonic crystal.
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References
K. Busch and S. John, Phys. Rev. Lett. 83, 967 (1999).
S. Gottardo, D. S. Wiersma, and W. L. Vos, Physica B (Amsterdam) 338, 143 (2003).
G. Mertens, T. Röder, R. Schweins, et al., Appl. Phys. Lett. 80, 1885 (2002).
S. W. Leonard, J. P. Mondia, H. M. van Driel, et al., Phys. Rev. B 61, 2389 (2000).
G. Mertens, T. Röder, H. Matthias, et al., Appl. Phys. Lett. 83, 3036 (2003).
V. A. Tolmachev, L. S. Granitsyna, E. N. Vlasova, et al., Fiz. Tekh. Poluprovodn. (St. Petersburg) 36, 996 (2002) [Semiconductors 36, 932 (2002)].
V. A. Tolmachev, T. S. Perova, and K. Berwick, Appl. Opt. 42, 5679 (2003).
V. A. Tolmachev, T. S. Perova, E. V. Astrova, and R. M. Moore, in Proceedings of 5th International Conference on Transparent Optical Networks (Warsaw, 2003), Vol. 1, Tu.P.2.
S. T. Wu, Opt. Eng. 26, 120 (1987).
L. M. Blinov, Electro-and Magneto-Optics of Liquid Crystals (Nauka, Moscow, 1978) [in Russian].
K. Miyano, J. Chem. Phys. 69, 4807 (1978).
S. É. Frish and A. V. Timoreva, Course of General Physics, Vol. 3: Optics. Atomic Physics (Fizmatgiz, Moscow, 1961), p. 192 [in Russian].
S. Jen, N. A. Clark, and P. S. Pershan, J. Chem. Phys. 66, 4635 (1977).
W. J. Jones, D. R. Thomas, D. W. Thomas, and G. Williams, J. Mol. Struct. 614, 75 (2002).
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Translated from Fizika i Tekhnika Poluprovodnikov, Vol. 39, No. 7, 2005, pp. 793–801.
Original Russian Text Copyright © 2005 by Astrova, Perova, Grudinkin, Tolmachev, Pilyugina, Voronkov, Vij.
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Astrova, E.V., Perova, T.S., Grudinkin, S.A. et al. Polarized infrared and Raman spectroscopy studies of the liquid crystal E7 alignment in composites based on grooved silicon. Semiconductors 39, 759–767 (2005). https://doi.org/10.1134/1.1992629
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DOI: https://doi.org/10.1134/1.1992629