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Multi-stable cholesteric liquid crystal windows with four optical states.
- Source :
-
Liquid Crystals . Feb2022, Vol. 49 Issue 3, p289-296. 8p. - Publication Year :
- 2022
-
Abstract
- An electrically switchable multi-stable liquid crystal device is demonstrated based on a non-uniform cholesteric liquid crystal (CLC) structure in a single cell. The non-uniform CLC structure consists of a polymer stabilised CLC layer and a non-polymer stabilised CLC layer. By taking advantage of the difference in driving electric field strength of the two layers, the device can be switched electrically to four different states: the reflecting state, the reflecting and scattering co-existing state, the scattering-only state and the transparent state. The optical properties of the four states and the transition conditions between the states were elucidated. Moreover, all states with reflecting and/or scattering properties are stable for an extended period of time after switching off the electric field. Thanks to its multi-stability, this device can be used for energy-saving smart windows of automobiles, buildings and in architectural aesthetics. An electrically switchable multi-stable liquid crystal device is demonstrated based on a non-uniform cholesteric liquid crystal (CLC) structure in a single cell. The device can be switched electrically to four different states. All states with reflecting and/or scattering properties are stable for an extended period of time after switching off the electric field. Thanks to its multi-stability, this device can be used for energy-saving smart windows of automobiles, buildings and in architectural aesthetics. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02678292
- Volume :
- 49
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Liquid Crystals
- Publication Type :
- Academic Journal
- Accession number :
- 156443477
- Full Text :
- https://doi.org/10.1080/02678292.2021.1962422