An ac calorimeter for measuring heat capacity of free-standing liquid-crystal films

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

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

A unique ac calorimeter for measuring the heat capacity of free-standing liquid-crystal films has been developed. A theory of the measurement method used is presented and the experimental setup is discussed. The calorimeter has been used to study the nature of the smectic-A-hexatic-B transition of several liquid-crystal compounds. The evolution of the heat-capacity anomaly associated with this transition has been studied for films ranging from three to a few thousand smectic layers in thickness.

Original languageEnglish (US)
Pages (from-to)415-421
Number of pages7
JournalReview of Scientific Instruments
Volume62
Issue number2
DOIs
StatePublished - 1991

Keywords

  • CALORIMETERS
  • DESIGN
  • PHASE TRANSFORMATIONS
  • SMECTIC CRYSTALS
  • TRANSITION HEAT
  • TWO−DIMENSIONAL SYSTEMS

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