Alignment of liquid crystal E7 in composite photonic crystals based on single crystal silicon
Citation:A. D. Remenyuk, E. V. Astrova, R. F. Vitman, T. S. Perova, and V. A. Tolmachev, Alignment of liquid crystal E7 in composite photonic crystals based on single crystal silicon, Opto-Ireland 2005: Optoelectronics, Photonic Devices, and Optical Networks, Dublin, Ireland, Monday 04 April 2005, ohn G. McInerney, Gerard Farrell, David M. Denieffe, Liam P. Barry, Harold S. Gamble, Padraig J. Hughes, Alan Moore, 5825, SPIE, 2005, 400-408
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The orientation of nematic liquid crystal (LC) E7 on the surface of (111) silicon wafers and in the channels of grooved silicon structure has been investigated. Grooved Si is a periodical structure obtained by wet anisotropic etching of deep and narrow grooves in (110) Si using an alkaline solution. This structure can serve as a one-dimensional (1D) photonic crystal. Composite structures obtained from grooved Si infiltrated by LC are promising candidates for electro-optic application. LC E7 was infiltrated into the channels of grooved Si and into the bulk Si cells. IR spectroscopy and capacitance-voltage characteristics under DC electric field were applied to investigate LC orientation. It is shown that the E7 liquid crystal in grooved silicon exhibits a weak planar orientation with respect to the silicon walls.
Science Foundation Ireland (SFI)
Author: PEROVA, TANIA
Other Titles:Opto-Ireland 2005: Optoelectronics, Photonic Devices, and Optical Networks
Type of material:Poster
Availability:Full text available
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