Heat-capacity anomaly from four-layer liquid-crystal films

R. Geer, C. C. Huang, R. Pindak, J. W. Goodby

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

A high-sensitivity ac calorimeter system has been developed to investigate the temperature variation of the heat capacity from free-standing liquid-crystal films. We have observed a clear evolution of the heat-capacity anomaly from films of the liquid-crystal compound 650 BC as the films are reduced in thickness from 10 to 4 molecular layers near their bulk smectic-Ahexatic-B transition. Here 650BC refers to n-hexyl-4-n-pentyloxybiphenyl-4-carboxylate. The four-layer films show a single, sharp, and cusplike heat-capacity peak without thermal hysteresis.

Original languageEnglish (US)
Pages (from-to)540-543
Number of pages4
JournalPhysical Review Letters
Volume63
Issue number5
DOIs
StatePublished - Jan 1 1989

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