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Title: Field induced heliconical structure of cholesteric liquid crystal

Abstract

A diffraction grating comprises a liquid crystal (LC) cell configured to apply an electric field through a cholesteric LC material that induces the cholesteric LC material into a heliconical state with an oblique helicoid director. The applied electric field produces diffracted light from the cholesteric LC material within the visible, infrared or ultraviolet. The axis of the heliconical state is in the plane of the liquid crystal cell or perpendicular to the plane, depending on the application. A color tuning device operates with a similar heliconical state liquid crystal material but with the heliconical director axis oriented perpendicular to the plane of the cell. A power generator varies the strength of the applied electric field to adjust the wavelength of light reflected from the cholesteric liquid crystal material within the visible, infrared or ultraviolet.

Inventors:
; ; ;
Publication Date:
Research Org.:
Kent State Univ., Kent, OH (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1366492
Patent Number(s):
9,690,161
Application Number:
14/812,397
Assignee:
KENT STATE UNIVERSITY CHO
DOE Contract Number:  
FG02-06ER46331
Resource Type:
Patent
Resource Relation:
Patent File Date: 2015 Jul 29
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Lavrentovich, Oleg D., Shiyanovsii, Sergij V., Xiang, Jie, and Kim, Young-Ki. Field induced heliconical structure of cholesteric liquid crystal. United States: N. p., 2017. Web.
Lavrentovich, Oleg D., Shiyanovsii, Sergij V., Xiang, Jie, & Kim, Young-Ki. Field induced heliconical structure of cholesteric liquid crystal. United States.
Lavrentovich, Oleg D., Shiyanovsii, Sergij V., Xiang, Jie, and Kim, Young-Ki. Tue . "Field induced heliconical structure of cholesteric liquid crystal". United States. doi:. https://www.osti.gov/servlets/purl/1366492.
@article{osti_1366492,
title = {Field induced heliconical structure of cholesteric liquid crystal},
author = {Lavrentovich, Oleg D. and Shiyanovsii, Sergij V. and Xiang, Jie and Kim, Young-Ki},
abstractNote = {A diffraction grating comprises a liquid crystal (LC) cell configured to apply an electric field through a cholesteric LC material that induces the cholesteric LC material into a heliconical state with an oblique helicoid director. The applied electric field produces diffracted light from the cholesteric LC material within the visible, infrared or ultraviolet. The axis of the heliconical state is in the plane of the liquid crystal cell or perpendicular to the plane, depending on the application. A color tuning device operates with a similar heliconical state liquid crystal material but with the heliconical director axis oriented perpendicular to the plane of the cell. A power generator varies the strength of the applied electric field to adjust the wavelength of light reflected from the cholesteric liquid crystal material within the visible, infrared or ultraviolet.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jun 27 00:00:00 EDT 2017},
month = {Tue Jun 27 00:00:00 EDT 2017}
}

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