Bio-Inspired Hierarchical Micro-/Nanostructures for Anti-Icing Solely Fabricated by Metal-Assisted Chemical Etching
We report a cost-effective and scalable methodology for producing a hierarchical micro-/nanostructured silicon surface solely by metal-assisted chemical etching. It involves two major processing steps of fabricating micropillars and nanowires separately. The process of producing micro-scale structur...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Micromachines |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-666X/13/7/1077 |
| _version_ | 1827627843779035136 |
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| author | Lansheng Zhang Xiaoyang Chu Feng Tian Yang Xu Huan Hu |
| author_facet | Lansheng Zhang Xiaoyang Chu Feng Tian Yang Xu Huan Hu |
| author_sort | Lansheng Zhang |
| collection | DOAJ |
| description | We report a cost-effective and scalable methodology for producing a hierarchical micro-/nanostructured silicon surface solely by metal-assisted chemical etching. It involves two major processing steps of fabricating micropillars and nanowires separately. The process of producing micro-scale structures by masked metal-assisted chemical etching was optimized. Silicon nanowires were created on the micropillar’s surface via maskless metal-assisted chemical etching. The hierarchical micro-/nanostructured surface exhibits superhydrophobic properties with a high contact angle of ~156° and a low sliding angle of <2.5° for deionized water. Furthermore, due to the existence of microscale and nanoscale air trapped at the liquid/solid interface, it exhibits a long ice delay time of 2876 s at −5 °C, more than 5 times longer than that of smooth surfaces. Compared to conventional dry etching methods, the metal-assisted chemical etching approach excludes vacuum environments and high-temperature processes and can be applied for applications requiring hierarchical micro-/nanostructured surfaces or structures. |
| first_indexed | 2024-03-09T13:21:32Z |
| format | Article |
| id | doaj.art-92ea181e734d4c32abb82807a5c13e59 |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-09T13:21:32Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-92ea181e734d4c32abb82807a5c13e592023-11-30T21:29:18ZengMDPI AGMicromachines2072-666X2022-07-01137107710.3390/mi13071077Bio-Inspired Hierarchical Micro-/Nanostructures for Anti-Icing Solely Fabricated by Metal-Assisted Chemical EtchingLansheng Zhang0Xiaoyang Chu1Feng Tian2Yang Xu3Huan Hu4ZJU-UIUC Institute, International Campus, Zhejiang University, Haining 314400, ChinaZJU-UIUC Institute, International Campus, Zhejiang University, Haining 314400, ChinaZJU-UIUC Institute, International Campus, Zhejiang University, Haining 314400, ChinaSchool of Micro-Nano Electronics, Zhejiang University, Hangzhou 310000, ChinaZJU-UIUC Institute, International Campus, Zhejiang University, Haining 314400, ChinaWe report a cost-effective and scalable methodology for producing a hierarchical micro-/nanostructured silicon surface solely by metal-assisted chemical etching. It involves two major processing steps of fabricating micropillars and nanowires separately. The process of producing micro-scale structures by masked metal-assisted chemical etching was optimized. Silicon nanowires were created on the micropillar’s surface via maskless metal-assisted chemical etching. The hierarchical micro-/nanostructured surface exhibits superhydrophobic properties with a high contact angle of ~156° and a low sliding angle of <2.5° for deionized water. Furthermore, due to the existence of microscale and nanoscale air trapped at the liquid/solid interface, it exhibits a long ice delay time of 2876 s at −5 °C, more than 5 times longer than that of smooth surfaces. Compared to conventional dry etching methods, the metal-assisted chemical etching approach excludes vacuum environments and high-temperature processes and can be applied for applications requiring hierarchical micro-/nanostructured surfaces or structures.https://www.mdpi.com/2072-666X/13/7/1077hierarchical micro-/nanostructuressuperhydrophobicanti-icingmetal-assisted chemical etching |
| spellingShingle | Lansheng Zhang Xiaoyang Chu Feng Tian Yang Xu Huan Hu Bio-Inspired Hierarchical Micro-/Nanostructures for Anti-Icing Solely Fabricated by Metal-Assisted Chemical Etching Micromachines hierarchical micro-/nanostructures superhydrophobic anti-icing metal-assisted chemical etching |
| title | Bio-Inspired Hierarchical Micro-/Nanostructures for Anti-Icing Solely Fabricated by Metal-Assisted Chemical Etching |
| title_full | Bio-Inspired Hierarchical Micro-/Nanostructures for Anti-Icing Solely Fabricated by Metal-Assisted Chemical Etching |
| title_fullStr | Bio-Inspired Hierarchical Micro-/Nanostructures for Anti-Icing Solely Fabricated by Metal-Assisted Chemical Etching |
| title_full_unstemmed | Bio-Inspired Hierarchical Micro-/Nanostructures for Anti-Icing Solely Fabricated by Metal-Assisted Chemical Etching |
| title_short | Bio-Inspired Hierarchical Micro-/Nanostructures for Anti-Icing Solely Fabricated by Metal-Assisted Chemical Etching |
| title_sort | bio inspired hierarchical micro nanostructures for anti icing solely fabricated by metal assisted chemical etching |
| topic | hierarchical micro-/nanostructures superhydrophobic anti-icing metal-assisted chemical etching |
| url | https://www.mdpi.com/2072-666X/13/7/1077 |
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