Fast electro-optic device controlled by dielectric response of planarly aligned cholesteric liquid crystals

Ho Hyun Lee, Jeong Seon Yu, Jong Hyun Kim, Shin Ichi Yamamoto, Hirotsugu Kikuchi

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Planarly aligned cholesteric liquid crystals of short pitch were applied by the in-plane electric field. The reorientation of the director, increasing pitch, and flexoelectricity induce the change of transmission. The main effect in this research is due to the director reorientation along the electric field. The flexoelectricity deters the change in the birefringence induced by the dielectric response. The response was very fast for the effectively thin periodic boundary of the half-pitch of liquid crystal. The contrast ratio was more than 80 for red light and the response time was less than 0.1 ms for the experimental conditions.

Original languageEnglish
Article number014503
JournalJournal of Applied Physics
Volume106
Issue number1
DOIs
Publication statusPublished - Jul 24 2009

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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