Surface-freezing transitions and novel tilted heretic phases in smectic liquid-crystal thin films

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/39044

Title:	Surface-freezing transitions and novel tilted heretic phases in smectic liquid-crystal thin films
Authors:	Chao,CY;Hui,SW;Maclennan,JE;Pang,JZ;Ho,JT
Contributors:	物理研究所
Keywords:	X-RAY;TEXTURES
Date:	1999
Issue Date:	2010-07-08 14:03:11 (UTC+8)
Publisher:	中央大學
Abstract:	We report the first unambiguous identification in a thermotropic liquid crystal of a heretic smectic-l, a phase with molecular tilt direction intermediate between those of the smectic-l and smectic-F, using electron diffraction in free-standing films of 5-(4"-hexyl, 3'-fluoro-p-terphenyl-4-oxy)-pentanoic acid ethyl ester. Our structural data directly support the proposed explanation of the unusual stripe phase observed optically. The films show a rich phase diagram as a function of thickness and temperature. A novel phase transition within the surface smectic-l phase is also observed.
Relation:	MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS
Appears in Collections:	[Graduate Institute of Physics] journal & Dissertation

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