Energetics of topographically designed Smectic-A oily streaks.
Energetics of topographically designed Smectic-A oily streaks.
复制标题
地形设计的近晶-A 油性条纹的能量。
作者：
Amine Missaoui;Adam L. Susser;H. Aharoni;C. Rosenblatt
在涂有聚合物乙烯醇的基底上沉积一层薄的近晶-A液晶（LC）膜，该基底在边长L ≤ 85 μm的正方形上划有均匀的易轴图案。图案化区域的小尺寸促进材料分布以在划线正方形上方形成丘（对于薄膜）或凹陷（对于厚膜）并且具有油条纹（OS）纹理。光学轮廓测量与膜厚度的关系表明，OS结构旨在采用取决于分子性质、温度和空气界面处的表面张力的优选厚度z 0。我们提出了一个唯象模型，估计其厚度偏离z 0的OS层的能量成本。
A thin Smectic-A liquid crystal (LC) film is deposited on a polymer vinyl alcohol-coated substrate that had been scribed with a uniform easy axis pattern over a square of side length L ≤ 85 μm. The small size of the patterned region facilitates material distribution to form either a hill (for a thin film) or divot (for a thick film) above the scribed square and having an oily streak (OS) texture. Optical profilometry measurements vs. film thickness suggest that the OS structure aims to adopt a preferred thickness z0 that depends on the nature of the molecule, the temperature, and the surface tension at the air interface. We present a phenomenological model that estimates the energy cost of the OS layer as its thickness deviates from z0.
DOI：
10.3390/cryst7120358
发表时间：
2017-12
期刊：
--
影响因子：
--
作者：
Ines Gharbi;Amine Missaoui;D. Demaille;E. Lacaze;C. Rosenblatt
通讯作者：
Ines Gharbi;Amine Missaoui;D. Demaille;E. Lacaze;C. Rosenblatt