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Stable Superwetting Surface Prepared with Tilted Silicon Nanowires
Xiangman Meng1, Ailin Zhou1, Bo Wang1
1School of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124 People's Republic of China.
Nano-Micro Letters
|November 22, 2018
Summary
Researchers developed a superwetting tilted silicon nanowires (TSNWs) surface using a simple method. This controllable surface can switch between superhydrophilicity and superhydrophobicity, offering anti-adhesion properties and excellent durability.
Area of Science:
- Materials Science
- Nanotechnology
- Surface Chemistry
Background:
- Superwettable nanostructured surfaces are essential for advanced applications.
- Controlling surface wettability is a key challenge in materials science.
Purpose of the Study:
- To develop a facile and controllable method for fabricating superwetting tilted silicon nanowires (TSNWs) surfaces.
- To investigate the tunable wettability and anti-adhesion properties of the fabricated TSNWs surfaces.
Main Methods:
- Metal-assisted chemical etching was used to create the nanowire structure.
- Modification with low-surface-energy materials tuned the surface properties.
- Contact angle and sliding angle measurements characterized the wettability.
Main Results:
- The fabricated TSNWs surface exhibited a wide range of wettability, from superhydrophilic (CA ≈ 0°) to superhydrophobic (CA up to 160°).
- The nanostructured surface demonstrated anti-adhesion to water with a low sliding angle (α ≈ 0°).
- Fluorinated TSNWs surfaces showed excellent stability and durability due to strong chemical bonding.
Conclusions:
- A controllable and facile method for creating superwetting TSNWs surfaces was successfully demonstrated.
- The tunable wettability and anti-adhesion properties of these surfaces hold promise for various engineering applications.
- The enhanced stability and durability of the fluorinated surfaces ensure their practical viability.
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