One‐step modification method to fabricate wettability patterns on aluminium substrate
| Autor: | Jiyu Liu, Xin Liu, Jing Sun, Xiaolong Yang, Shuai Huang, Faze Chen, Huanxi Zheng, Wen Ji Xu |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Biomedical Engineering chemistry.chemical_element Bioengineering Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Isotropic etching Surface energy 0104 chemical sciences Contact angle Nanolithography chemistry Superhydrophilicity Aluminium Etching (microfabrication) General Materials Science Wetting 0210 nano-technology |
| Zdroj: | Micro & Nano Letters. 11:697-701 |
| ISSN: | 1750-0443 |
| Popis: | Since there is currently no method to selectively fabricate superhydrophobic regions on superhydrophilic surfaces of metal substrates, wettability patterns on metal substrates are prepared via the three-step technique including superhydrophilic, superhydrophobic and selectively superhydrophilic modifications. Here, an innovative method that can selectively lower surface energy of superhydrophilic surfaces, and thereby makes it more convenient to fabricate the wettability patterns, is proposed. Chemical etching is used to formulate micro/nanoscale rough structures and fabricate superhydrophilic aluminium (Al) surface, which is then covered by patterned mask whose main composition is siloxane. Removing the mask after 80°C water bath heating for 20 s, the covered Al surface has been modified to become superhydrophobic (contact angles >165°, sliding angles |
| Databáze: | OpenAIRE |
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