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Proceedings Paper

Electro-optical and nonlinear optical properties of semiconductor nanorod doped liquid crystals
Author(s): Yana Williams; Kan Chan; Jae Hong Park; Iam Choon Khoo; Brad Lewis; Thomas E. Mallouk
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Paper Abstract

We studied the electro-optical property and photorefractive effects in a semiconductor CdSe nanorod doped neamtic liquid crystal [NLC] system. The nonlinear index coefficient is measured to be n2=2.05×10−2cm2/W, which is 10 times larger than that of an equivalent pure liquid crystal system. Electro-optical switching investigation shows that the Freedericksz transition voltage of this system is also noticeably lower than that of un-doped NLC. These enhanced electro- and nonlinear optical properties are attributed to the photoconductivity of CdSe nanorods and the enlarged electric conductivity and dielectric anisotropies of the doped system. An AC field assisted photorefractive effect in CdSe nanorod doped liquid crystal system has also been studied.

Paper Details

Date Published: 20 August 2005
PDF: 6 pages
Proc. SPIE 5936, Liquid Crystals IX, 593613 (20 August 2005); doi: 10.1117/12.617730
Show Author Affiliations
Yana Williams, Pennsylvania State Univ. (United States)
Kan Chan, Pennsylvania State Univ. (United States)
Jae Hong Park, Pennsylvania State Univ. (United States)
Iam Choon Khoo, Pennsylvania State Univ. (United States)
Brad Lewis, Pennsylvania State Univ. (United States)
Thomas E. Mallouk, Pennsylvania State Univ. (United States)

Published in SPIE Proceedings Vol. 5936:
Liquid Crystals IX
Iam-Choon Khoo, Editor(s)

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