Correlation between surface roughness and hydrophobicity of GLAD RF sputtered PTFE/W/Glass nanorod thin films

被引：30

作者：

Bayat, A. ^{[1
]}

Ebrahimi, M. ^{[1
]}

Moshfegh, A. Z. ^{[1
,2
]}

机构：

[1] Sharif Univ Technol, Dept Phys, Tehran, Iran

[2] Sharif Univ Technol, Inst Nanosci & Nanotechnol, Tehran, Iran

来源：

VACUUM | 2014年 / 101卷

关键词：

Hydrophobicity; GLAD; Surface energy; Cassie-Baxter model; SUPERHYDROPHOBIC SURFACES;

D O I：

10.1016/j.vacuum.2013.09.007

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

In this research, we have used glancing angle deposition (GLAD) RF sputtering technique with various angular speeds ranging from 5 to 30 RPM to fabricate polytetrafluoroethylene (PTFE, Teflon) coated Tungsten on glass substrate for producing hydrophobic surface. According to scanning electron microscopy (SEM) observations, Tungsten nanorods were formed on the substrate with average diameter and length of about similar to 50 nm and 300 nm, respectively. Hydrophobic property of W/Glass and PTFE/W/Glass systems was investigated by water contact angle measurements and we have found that the contact angle varied with the substrate angular speed. Maximum contact angle of 121 degrees was measured for the PTFE/W/Glass system at optimum angular speed of 10 RPM. X-ray photoelectron spectroscopy (XPS) determined surface chemical composition and F/C ratio was obtained at 1.15. Based on our data analysis, both of the investigated systems obey Cassie-Baxter model. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：279 / 282

页数：4

共 16 条

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