Electrically switchable polymer liquid crystal and polymer birefringent flake in fluid host systems and optical devices utilizing same
Abstract
Flakes or platelets of polymer liquid crystals (PLC) or other birefringent polymers (BP) suspended in a fluid host medium constitute a system that can function as the active element in an electrically switchable optical device when the suspension is either contained between a pair of rigid substrates bearing transparent conductive coatings or dispersed as microcapsules within the body of a flexible host polymer. Optical properties of these flake materials include large effective optical path length, different polarization states and high angular sensitivity in their selective reflection or birefringence. The flakes or platelets of these devices need only a 3-20.degree. rotation about the normal to the cell surface to achieve switching characteristics obtainable with prior devices using particle rotation or translation.
- Inventors:
- Issue Date:
- Research Org.:
- University Of Rochester, Rochester, NY (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1174634
- Patent Number(s):
- 6665042
- Application Number:
- 09/571,805
- Assignee:
- University Of Rochester
- Patent Classifications (CPCs):
-
G - PHYSICS G02 - OPTICS G02F - DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING
- DOE Contract Number:
- FC03-93SF19460
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Marshall, Kenneth L., Kosc, Tanya Z., Jacobs, Stephen D., Faris, Sadeg M., and Li, Le. Electrically switchable polymer liquid crystal and polymer birefringent flake in fluid host systems and optical devices utilizing same. United States: N. p., 2003.
Web.
Marshall, Kenneth L., Kosc, Tanya Z., Jacobs, Stephen D., Faris, Sadeg M., & Li, Le. Electrically switchable polymer liquid crystal and polymer birefringent flake in fluid host systems and optical devices utilizing same. United States.
Marshall, Kenneth L., Kosc, Tanya Z., Jacobs, Stephen D., Faris, Sadeg M., and Li, Le. Tue .
"Electrically switchable polymer liquid crystal and polymer birefringent flake in fluid host systems and optical devices utilizing same". United States. https://www.osti.gov/servlets/purl/1174634.
@article{osti_1174634,
title = {Electrically switchable polymer liquid crystal and polymer birefringent flake in fluid host systems and optical devices utilizing same},
author = {Marshall, Kenneth L. and Kosc, Tanya Z. and Jacobs, Stephen D. and Faris, Sadeg M. and Li, Le},
abstractNote = {Flakes or platelets of polymer liquid crystals (PLC) or other birefringent polymers (BP) suspended in a fluid host medium constitute a system that can function as the active element in an electrically switchable optical device when the suspension is either contained between a pair of rigid substrates bearing transparent conductive coatings or dispersed as microcapsules within the body of a flexible host polymer. Optical properties of these flake materials include large effective optical path length, different polarization states and high angular sensitivity in their selective reflection or birefringence. The flakes or platelets of these devices need only a 3-20.degree. rotation about the normal to the cell surface to achieve switching characteristics obtainable with prior devices using particle rotation or translation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 16 00:00:00 EST 2003},
month = {Tue Dec 16 00:00:00 EST 2003}
}
Works referenced in this record:
Cholesteric Liquid Crystal Flakes — A New Form of Domain
journal, July 1998
- Korenic, Eileen M.; Jacobs, Stephen D.; Fare, Sadeg M.
- Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol. 317, Issue 1