LAYER-BY-LAYER TRANSITIONS IN LIQUID-CRYSTALS

被引：3

作者：

STOEBE, T ^{[1
]}

JIN, AJ ^{[1
]}

MACH, P ^{[1
]}

HUANG, CC ^{[1
]}

机构：

[1] UNIV MINNESOTA,SCH PHYS & ASTRON,MINNEAPOLIS,MN 55455

来源：

INTERNATIONAL JOURNAL OF THERMOPHYSICS | 1995年 / 16卷 / 01期

关键词：

FREESTANDING FILM; HEAR CAPACITY; LAYER-BY-LAYER TRANSITION; LIQUID CRYSTAL; SMECTIC-A-HEXATIC-B TRANSITION;

D O I：

10.1007/BF01438955

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Employing our free-standing film calorimetric system, we have identified three remarkable layer-by-layer transitions in several liquid-crystal compounds. Each of these transitions can be well described by the simple power-law form: L=L(0)t(-nu). The layering transitions found near the smectic-A-hexatic-B and smectic-A-crystal-B transitions are well characterized by the exponent nu approximate to 1/3. This value is consistent with models based on a van der Waals-like dominant intermolecular interaction. Another novel layer-by-layer thinning transition has been discovered above the bulk smectic-A-isotropic transition of a perfluorinated liquid-crystal compound. The value of the exponent obtained, nu approximate to 3/4, cannot be easily explained using familiar models.

引用

页码：33 / 43

页数：11

共 15 条

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