Accession Number:

ADA409045

Title:

Polymer-Stabilized Cholesteric Liquid Crystal Diffraction Gratings for Optical Switching and Sensor Applications

Descriptive Note:

Final rept. Jul 1999-Dec 2002

Corporate Author:

KENT STATE UNIV OH

Personal Author(s):

Report Date:

2002-12-23

Pagination or Media Count:

9.0

Abstract:

Low concentration polymer networks are used to stabilize various pattern-forming states of cholesteric liquid crystals. The resulting optical diffraction gratings operate with 70 efficiency in transmission Raman-Nath mode and are electrically switchable between diffracting and non-diffracting states for low applied voltages 3 - 30 V. A remarkable templating of spatio-orientational order, intrinsic to the liquid crystal pattern formation, is expressed in the polymer network. Based on preliminary results on a dopable polyacetylene, the liquid crystal-based templating effect holds promise as a low cost, simple processing approach to the assembly of micron and submicron, orientationally-ordered arrays of functional polymers.

Subject Categories:

  • Polymer Chemistry
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE