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Vol. 8 No. 4 (2016)

Stable Superwetting Surface Prepared with Tilted Silicon Nanowires

https://doi.org/10.1007/s40820-016-0100-x
Xiangman Meng
School of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, People’s Republic of China
Ailin Zhou
School of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, People’s Republic of China
Bo Wang
School of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, People’s Republic of China
Yu Chen
School of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, People’s Republic of China
Yun-Hui Tang
School of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, People’s Republic of China
Hui Yan
School of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, People’s Republic of China

Corresponding Author: Bo Wang

wangbo@bjut.edu.cn

Nano-Micro Letters, Vol. 8 No. 4 (2016), Article Number: 388-393

Abstract

Large-scale uniform nanostructured surface with superwettability is crucial in both fundamental research and engineering applications. A facile and controllable approach was employed to fabricate a superwetting tilted silicon nanowires (TSNWs) surface through metal-assisted chemical etching and modification with low-surface-energy material. The contact angle (CA) measurements of the nanostructured surface show a large range from the superhydrophilicity (the CA approximate to 0°) to superhydrophobicity (the CA up to 160°). The surface becomes antiadhesion to water upon nanostructuring with a measured sliding angle (α) close to 0°. Moreover, the fluorinated TSNWs surface exhibits excellent stability and durability because strong chemical bonding has been formed on the surface.

Keywords

Tilted silicon nanowires Chemical etching Superwettability Stability
Meng, Xiangman, Ailin Zhou, Bo Wang, Yu Chen, Yun-Hui Tang, and Hui Yan. 2016. “Stable Superwetting Surface Prepared With Tilted Silicon Nanowires”. Nano-Micro Letters 8 (4):388-93. https://doi.org/10.1007/s40820-016-0100-x.
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