A novel fabrication of a superhydrophobic surface with highly similar hierarchical structure of the lotus leaf on a copper sheet

作者：Yuan, Zhiqing^*; Wang, Xian; Bin, Jiping; Peng, Chaoyi; Xing, Suli; Wang, Menglei; Xiao, Jiayu; Zeng, Jingcheng; Xie, Yong; Xiao, Ximei; Fu, Xin; Gong, Huifang; Zhao, Dejian

来源：Applied Surface Science, 2013, 285: 205-210.

DOI：10.1016/j.apsusc.2013.08.037

• Copper
• Superhydrophobic
• Hierarchical surface structure
• Contact angle
• Sliding angle

A novel and facile avenue was developed to successfully fabricate a regular hierarchical surface structure on a copper sheet via the combination of polydimethylsiloxane (PDMS) template and chemical etching method in this paper. The as-prepared hierarchical surface structure was comprised of uniform-sized microprotrusions and nanostructures which was similar to the natural lotus leaf. After modified by stearic acid, the surface was covered with a layer of hydrophobic chemical groups and became superhydrophobic. The values of its water contact angle and sliding angle were about 153 degrees and 7 degrees, respectively. Its wettability kept rather stable when it was exposed to humid conditions for 3 months. This study provides a new way to fabricate uniform surface microstructures that are highly similar to natural biological surfaces on metal materials.

• 出版日期2013-11-15
• 单位中国人民解放军国防科学技术大学; 湖南工业大学