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Record Details

Record 63 of 16775
Shear-induced surface alignment of polymer dispersed liquid crystal microdroplets on the boundary layer
Author and Affiliation:
Parmar, D. S.(NASA Langley Research Center, Hampton, VA, United States)
Singh, J. J.(NASA Langley Research Center, Hampton, VA, United States)
Abstract: Polymer dispersed liquid crystal thin films have been deposited on a glass substrate, utilizing the processes of polymerization and solvent evaporation induced phase separation. Liquid crystal microdroplets trapped on the upper surface of the thin film respond to the shear stress due to air or gas flow on the surface layer. Response to an applied step shear stress input on the surface layer has been measured by measuring the time response of the transmitted light intensity. Initial results on the measurements of the light transmission as a function of the air flow differential pressure indicate that these systems offer features suitable for boundary layer and gas flow sensors.
Publication Date: Jan 01, 1993
Document ID:
19930033508
(Acquired Dec 28, 1995)
Accession Number: 93A17505
Subject Category: ENGINEERING (GENERAL)
Document Type: Journal Article
Publication Information: Molecular Crystals and Liquid Crystals (ISSN 0026-8941); p. 183-196.
Publisher Information: United States
Contract/Grant/Task Num: NAS1-18584-111
Financial Sponsor: NASA; United States
Organization Source: NASA Langley Research Center; Hampton, VA, United States
Description: 14p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: FLOW VISUALIZATION; LIQUID CRYSTALS; POLYMERIZATION; THIN FILMS; GAS FLOW; LIGHT TRANSMISSION; SHEAR STRESS
Imprint And Other Notes: Molecular Crystals and Liquid Crystals vol. 225 p. 183-196. 1993
Availability Source: Other Sources
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