標題: Mechanism in determining pretilt angle of liquid crystals aligned on fluorinated copolymer films
作者: Wu, Hsin-Ying
Wang, Chih-Yu
Lin, Chia-Jen
Pan, Ru-Pin
Lin, Song-Shiang
Lee, Chein-Dhau
Kou, Chwung-Shan
電子物理學系
Department of Electrophysics
公開日期: 7-Aug-2009
摘要: This work explores the surface treatment of copolymer materials with fluorinated carbonyl groups in various mole fractions by ultraviolet irradiation and ion-beam (IB) bombardment and its effect on liquid crystal (LC) surface alignments. X-ray photoemission spectroscopic analysis confirms that the content of the grafted CF(2) side chains dominates the pretilt angle. A significant increase in oxygen content is responsible for the increase in the polar surface energy during IB treatment. Finally, the polar component of the surface energy dominates the pretilt angle of the LCs.
URI: http://dx.doi.org/10.1088/0022-3727/42/15/155303
http://hdl.handle.net/11536/6826
ISSN: 0022-3727
DOI: 10.1088/0022-3727/42/15/155303
期刊: JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume: 42
Issue: 15
結束頁: 
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