Wetting transition of a nematic liquid crystal on a periodic wedge-structured substrate

被引：17
作者：
Patricio, P. [1 ,2 ]
Pham, C. -T. [2 ]
Romero-Enrique, J. M. [3 ]
机构：
[1] Inst Super Engn Lisboa, P-1949014 Lisbon, Portugal
[2] Univ Lisbon, Ctr Fis Teor & Computac, P-1649003 Lisbon, Portugal
[3] Univ Seville, Area Fis Teor, Dept Fis Atom Mol & Nucl, E-41080 Seville, Spain
来源：
EUROPEAN PHYSICAL JOURNAL E | 2008年 / 26卷 / 1-2期
关键词：
D O I：
10.1140/epje/i2007-10293-1
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
It is known that the wetting behaviour of a fluid is deeply altered by the presence of rough or structured substrates. We first review some simple considerations about isotropic fluids and rough substrates, and then we generalize Wenzel's law, which assigns an effective contact angle to a droplet on a rough substrate, when the wetting layer has an ordered phase, like a nematic. We estimate the conditions for which the wetting behavior of an ordered fluid can be qualitatively different from that usually found in a simple fluid. To support our general considerations, we use the Landau-de Gennes mean field approach to investigate theoretically and numerically the wetting transition of a nematic phase on a periodic triangular structured substrate.
引用
收藏
页码：97 / 101
页数：5
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