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Proceedings Paper • Open Access

Light-directing self-organized 1D and 3D chiral liquid crystalline nanostructures
Author(s): Quan Li; Hari Krishna Bisoyi

Paper Abstract

A brief overview of recent research and developments in our laboratory toward the fabrication and application of photoresponsive cholesteric liquid crystals, microshells and microdroplets, and blue phase is presented here. We have designed and synthesized a variety of light-driven chiral molecular switches and doped into achiral nematic liquid crystals hosts to obtain photoresponsive cholesteric liquid crystals and blue phase. By irradiation with light of suitable wavelengths, it has been possible to tune the reflection color of cholesteric liquid crystals and blue phase over a wide range across the visible spectrum. By doping upconversion nanoparticles into photoresponsive cholesteric liquid crystals, the reflection color tuning has been accomplished by irradiation with near infrared light. Moreover, cholesteric microshells have been fabricated which exhibit omnidirectional lasing. Similarly, cholesteric microdroplets have been found to display omnidirectional selective reflection and photonic cross communication. Wide-range non-mechanical beam steering has been demonstrated in a phoresponsive cholesteric liquid crystal sample. This short summary of our recent research work shows that the century old fascinating cholesteric liquid crystals have diverse opportunities to offer.

Paper Details

Date Published: 11 March 2015
PDF: 10 pages
Proc. SPIE 9384, Emerging Liquid Crystal Technologies X, 93840B (11 March 2015); doi: 10.1117/12.2077353
Show Author Affiliations
Quan Li, Kent State Univ. (United States)
Hari Krishna Bisoyi, Kent State Univ. (United States)

Published in SPIE Proceedings Vol. 9384:
Emerging Liquid Crystal Technologies X
Liang-Chy Chien; Harry J. Coles; Hirotsugu Kikuchi; Ivan I. Smalyukh, Editor(s)

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