Thickness-controlled hydrophobicity of fibrous Parylene-C films

被引:36
作者
Wei, Lai [1 ]
Parhi, Purnendu [2 ,3 ]
Vogler, Erwin A. [2 ,3 ]
Ritty, Timothy M. [4 ]
Lakhtakia, Akhlesh [1 ]
机构
[1] Penn State Univ, Dept Engn Sci & Mech, University Pk, PA 16802 USA
[2] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA
[3] Penn State Univ, Dept Bioengn, University Pk, PA 16802 USA
[4] Penn State Univ, Dept Orthopaed & Rehabil, Hershey, PA 17033 USA
关键词
Columnar thin film; Parylene; Wettability control; WETTABILITY; SURFACE; ADSORPTION; ADHESION;
D O I
10.1016/j.matlet.2010.02.009
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Fibrous Parylene-C films with tilted columnar morphology were deposited with a physicochemical version of the oblique-angle deposition (OAD) technique. Advancing contact angles increased from 103.9 degrees (smooth hydrophobic surface) to 168.5 degrees (rough superhydrophobic surface) as the thickness of the film increased from similar to 100 nm to similar to 60 mu m, reflecting changes in the morphology of the top surface. Treatment with oxygen plasma can render these fibrous films completely water wettable. These techniques allow tailoring of surface wettability to meet the demands of specific biomedical applications. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:1063 / 1065
页数:3
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