| MENG Ke-ke,ZHANG Zhong-yi,TAN Xin.Review on Surface Wettability Regulation of Diamond-like Carbon Films[J],50(10):147-156 |
| Review on Surface Wettability Regulation of Diamond-like Carbon Films |
| Received:October 13, 2020 Revised:February 18, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.16490/j.cnki.issn.1001-3660.2021.10.013 |
| KeyWord:diamond-like carbon wettability regulation chemical composition surface rough structure super-hydrophobicity |
| Author | Institution |
| MENG Ke-ke |
School of Mechanical Engineering, Inner Mongolia University of Science & Technology, Baotou , China |
| ZHANG Zhong-yi |
School of Mechanical Engineering, Inner Mongolia University of Science & Technology, Baotou , China |
| TAN Xin |
School of Mechanical Engineering, Inner Mongolia University of Science & Technology, Baotou , China |
|
| Hits: |
| Download times: |
| Abstract: |
| Diamond-like carbon films with special surface wettability especially super-hydrophobicity can fulfill the demand of surface modification of smart interface materials serving under extreme conditions (e.g., in rain or snow weather, humid environment, or human body) in the fields of machine, electronic, optics and medicine, etc. Herein, the advantages of produce technique and performances and preparation methods of diamond-like carbon films were overviewed briefly. The application background of diamond-like carbon films with special surface wettability especially super-hydrophobicity was presented. Meanwhile, the limitations both in science and technique to freely regulate surface wettability of diamond-like carbon films were also proposed. In this context, the inherent surface wettability of diamond-like carbon films and its relations with microstructures (including hybridization state of carbon atoms and short or medium range ordered sp2-C phase cluster structures) were demonstrated. Next, according to the classical Wenzel and Cassie wetting theories, a comprehensive review was presented on the regulation methods mainly from two different aspects, i.e., surface chemical compositions and surface rough structures, and recent achievements on surface wettability regulation of diamond-like carbon films. On one hand, changing surface chemical compositions or surface free energy by plasma surface treatment, element doping or surface chemical modification could promote inherent surface wettability modification (i.e., hydrophilicity to hydrophobicity transition) of diamond-like carbon films. On the other hand, constructing specific surface rough structures on the micro/nano scales by substrate surface texturing or film surface morphology design would control the interface wetting state (e.g., Wenzel state, Cassie state or the transition state) of diamond-like carbon films. These two effects together gave rise to the variation of surface wettability of diamond-like carbon films between super-hydrophilicity and super-hydrophobicity. Finally, some key scientific issues that hinder the surface wettability regulation of diamond-like carbon films were proposed, and the research prospects and directions of this field were also briefly addressed. |
| Close |
|
|
|