Determination of symmetry and molecular arrangements of free-standing liquid crystal films using null-transmission ellipsometry

D. A. Olson, X. F. Han, P. M. Johnson, A. Cady, C. C. Huang

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

A high resolution null-transmission ellipsometry system has been developed for measurement of the optical properties of liquid crystal free-standing films. The ellipsometric parameters are measured to within a resolution of 0.002° from samples held in a sealed, temperature-controlled environment. By measuring the ellipsometric parameters as a function of applied electric field orientation, the optical symmetry and molecular orientations of free-standing liquid crystal films can be determined in some cases. Three carefully selected applications of this technique are presented.

Original languageEnglish (US)
Pages (from-to)1521-1528
Number of pages8
JournalLiquid Crystals
Volume29
Issue number12
DOIs
StatePublished - Dec 1 2002

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