Liquid nanostripes

被引：44

作者：

Checco, A ^{[1
]}

Gang, O ^{[1
]}

Ocko, BM ^{[1
]}

机构：

[1] Brookhaven Natl Lab, Condensed Matter Phy & Mat Sci Dept, Upton, NY 11973 USA

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.96.056104

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Equilibrium wetting of ethanol, a volatile liquid, onto chemically patterned nanostripes has been investigated using noncontact atomic force microscopy (AFM). The chemical patterns, generated by a conducting AFM tip, are composed of COOH terminated "wetting" regions and CH3 terminated "nonwetting" regions. Controlled amounts of ethanol, from the vapor phase, condense on the COOH stripes and their shape is imaged in situ versus their width (70 < w < 300 nm). The measured profile shapes at saturation and their w(1/2) height dependence are well described by density functional theory with dispersive, nonretarded potentials.

引用

页数：4