Heat capacity investigations of extremely thin liquid-crystal free-standing films

C. C. Huang; R. Geer; T. Stoebe

doi:10.1080/10587259208037244

Heat capacity investigations of extremely thin liquid-crystal free-standing films

C. C. Huang, R. Geer, T. Stoebe

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

A high-resolution differential ac free-standing film calorimeter has been constructed in our laboratories. We have employed this unique calorimeter to investigate the evolution of the temperature dependence of heat-capacity anomalies through the smectic-A-hexatic-B-crystal-E transition sequence of one liquid crystal compound as the film thickness is reduced from a few hundred to just three molecular layers. The existence of free surfaces in the free-standing liquid-crystal films has a very strong effect on the development of the molecular order through the smectic-A-hexatic-B transition and other unexpected results related to the crystal-E order.

Original language	English (US)
Pages (from-to)	9-20
Number of pages	12
Journal	Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
Volume	212
Issue number	1
DOIs	https://doi.org/10.1080/10587259208037244
State	Published - Feb 1 1992

Keywords

free-standing films
heat capacity
phase transition
smectic-A-hexatic-B

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