Report
Mechanisms for the effect of electric and magnetic fields on biological systems Semiannual status report, Jan. 1969 - Jun. 1969 (Electric field effects on dielectric properties and molecular arrangements of cholesteric liquid crystals)
01 Jan 1969
Abstract
Measurements of dielectric constants of a cholesteryl
. _-- chlo-ride:choles.teryl - myristate mixt_ure - -__ having . a strongly - temperature
dependent helical pitch have been performed in the presence and
absence of an applied dc electric field.
arrangement in samples oriented *by wall effects is presented, as well
as the perturbations in this arrangement which occur both thermally
L ___ . -_ _. - - - - - - -- --._- - .- - - __ __ - - - ___ - _._ - %&
An analysis of the molecular
-and by the application of an electric field. -Elastic moduli of bend- .
.ing and torsional strain are estimated from the threshold electric
fields observed to (a) induce helical perturbation and (b) destroy
the helical structure in the transition to a nematic phase.
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Details
- Title
- Mechanisms for the effect of electric and magnetic fields on biological systems Semiannual status report, Jan. 1969 - Jun. 1969 (Electric field effects on dielectric properties and molecular arrangements of cholesteric liquid crystals)
- Creators
- H BaesslerM Labes - Drexel UniversityT LaRonge
- Publisher
- National Aeronautics and Space Administration
- Resource Type
- Report
- Language
- English
- Academic Unit
- Chemistry
- Identifiers
- 991022048715904721