Physics of Mesomorphic Compounds

This final report summarizes the physical behavior of over 200 cholesteric liquid crystals including transition temperatures, heats of transition, temperature sensitivity of visible selective reflection spectra, the effect of impurities, combining liquid crystals, and behavior in a thermal-imaging s...

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Bibliographic Details
Main Authors: Brown,Arlin J, Ennulat,Reinhard D
Format: Report
Language:English
Subjects:
AS31B
Cholesteric liquid crystal
IMPURITIES
LIQUID CRYSTALS
MESOMORPHIC COMPOUNDS
OPTICAL PROPERTIES
PE61102A
PHASE TRANSFORMATIONS
Physical Chemistry
PHYSICAL PROPERTIES
TEMPERATURE SENSITIVE ELEMENTS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
WU003
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Summary:This final report summarizes the physical behavior of over 200 cholesteric liquid crystals including transition temperatures, heats of transition, temperature sensitivity of visible selective reflection spectra, the effect of impurities, combining liquid crystals, and behavior in a thermal-imaging system. Eleven homologous series of alkanoates omega phenylalkanoates, alkyl carbonates, and S-alkyl thiocarbonates of cholesterol, cholest-5-en-3 Beta-thiol, and 5 alpha-cholestan-3 Beta-o1 were investigated. Twenty liquid crystals were found to have a cholesteric color spectral range of 0.2 C or less. (Author)