CALORIMETRIC STUDY OF PHASE-TRANSITIONS IN CONFINED LIQUID-CRYSTALS

被引：132

作者：

IANNACCHIONE, GS ^{[1
]}

FINOTELLO, D ^{[1
]}

机构：

[1] KENT STATE UNIV,INST LIQUID CRYSTAL,KENT,OH 44242

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.69.2094

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using an ac calorimetry technique we measured the specific heat at the nematic-isotropic, smectic-A-nematic, and smectic-A-isotropic phase transitions, for the alkylcyanobiphenyl liquid crystal nCB series confined to the 0.2-mum-diam pores of Anopore membranes. Studies were also performed as a function of nematic director alignment within the pores. Novel effects regarding specific-heat amplitudes, transition-temperature shifts, and broadening and rounding of phase transitions are found. They are strongly dependent on the director orientation and on the order of the phase transition.

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页码：2094 / 2097

页数：4

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