Record Display for the EPA National Library Catalog

RECORD NUMBER: 23 OF 29

Main Title Properties of Liquid Crystals and Their Application to the Measurement of Microwaves and Infrared Radiation.
CORP Author Bureau of Radiological Health, Rockville, Md.
Year Published 1969
Report Number Seminar paper-009;
Stock Number PB-193 153
Additional Subjects ( Detectors ; Liquids) ; ( Infrared detectors ; Liquids) ; Reviews ; Microwaves ; Crystals ; Cholesteryl esters ; Imines ; Colors ; Electric fields ; Heat ; Liquid crystals ; Nitro compounds ; Microwave radiation hazard detectors
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB-193 153 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 27p
Abstract
Molecular geometry is shown to be important in interpreting the properties of thermotropic liquid crystals. The present 'state of the art' is discussed and a description of how one can build molecules which will possess certain properties needed for specific applications is included. Certain aspects of molecular geometry are considered. Optical and structural properties of the different types of liquid crystals are explained with an emphasis on the use of these properties in the practical applications of liquid crystals. Both thermotropic and lyotropic liquid crystals are included in these deliberations. Applications of liquid crystals are directly related to the use of cholesteric esters which show color change as a function of temperature. Brief mention is made of the use of neumatic liquids which show strong response to electric and magnetic fields. (Author)