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Proceedings Paper

Alignment of liquid crystal E7 in composite photonic crystals based on single crystal silicon
Author(s): A. D. Remenyuk; E. V. Astrova; R. F. Vitman; T. S. Perova; V. A. Tolmachev
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Paper Abstract

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.

Paper Details

Date Published: 3 June 2005
PDF: 8 pages
Proc. SPIE 5825, Opto-Ireland 2005: Optoelectronics, Photonic Devices, and Optical Networks, (3 June 2005); doi: 10.1117/12.605432
Show Author Affiliations
A. D. Remenyuk, Ioffe Physico Technical Institute (Russia)
E. V. Astrova, Ioffe Physico Technical Institute (Russia)
R. F. Vitman, Ioffe Physico Technical Institute (Russia)
T. S. Perova, Trinity College (Ireland)
V. A. Tolmachev, Ioffe Physico Technical Institute (Russia)
Trinity College (Ireland)

Published in SPIE Proceedings Vol. 5825:
Opto-Ireland 2005: Optoelectronics, Photonic Devices, and Optical Networks
John Gerard McInerney; Harold S. Gamble; Gerald Farrell; David M. Denieffe; Padraig Hughes; R. Alan Moore; Liam Barry, Editor(s)

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