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Measurement of optical biaxiality and tilt angle in A smectic c liquid crystal

โœ Scribed by Doz. Dr. H. Schmiedel; Dr. A. Frieser

Publisher
John Wiley and Sons
Year
1987
Tongue
English
Weight
223 KB
Volume
22
Category
Article
ISSN
0232-1300

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โœฆ Synopsis

We present a new method of measuring the tilt angle and the optical biaxiality in liquid crystals (LCs). The method uses a fitting procedure of the optical path difference in specially prepared LC cells. Measurements are performed in the Sc phase of 4-n-hexyloxyplienyl-4n-decyloxybenzoate (HOPDOH) by means of microscopic observations in a rotary heating stage.

Es wird eirie neue Methode zur Bestimmung der optischen Zweiachsigkeit und des Tiltwinkels in Flussigkristallen vorgestellt. Zur Bestimmung der optisclien Weglangendifferenz in eirier speziell praparierten I~~lussigkristall-ZeIle wird ein Fittungsprogramm angewendet. Es erfolgte niikroskopisclie Beobaclitung unter Verwendung eines um 2 Achsen drehbaren Heiztisches. Die Messungen wurden an 4-n-Hexyloxyphenyl-4-n-Decyloxybenzoat (HOPDOH) in der Sc-Phase ausgefuhrt.

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