| 초록 |
The superhydrophobic surfaces showing high water contact angle, well above 150°, have been focused on various applications, such as self-cleaning, waterproofing, and antireflection. The superhydrophobic property of surface is strongly affected by intrinsic chemical properties and surface roughness. We demonstrate a facile method for fabricating micro- and nano-structured silicon surfaces which were produced by chemical wet etching. By controlling the etching conditions, the surface roughness can be tuned easily. In addition, the hierarchical silicon surfaces exhibits complete superhydrophobic behavior, contact angle of nearly 180°, after coating of thin layer of Teflon onto patterned silicon surfaces. |
