Fabrication of a Superhydrophobic Surface with Adjustable Hydrophobicity and Adhesivity Based on a Silica Nanotube Array
- Authors
- Yu, Jaeeun; Son, Sang Jun
- Issue Date
- 20-Oct-2012
- Publisher
- KOREAN CHEMICAL SOC
- Keywords
- Silica nanotube; Superhydrophobicity; Wettability; Nanoarray; Biochip
- Citation
- BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.33, no.10, pp.3378 - 3382
- Journal Title
- BULLETIN OF THE KOREAN CHEMICAL SOCIETY
- Volume
- 33
- Number
- 10
- Start Page
- 3378
- End Page
- 3382
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/16080
- DOI
- 10.5012/bkcs.2012.33.10.3378
- ISSN
- 0253-2964
- Abstract
- A superhydrophobic surface with a water contact angle > 150 degrees has attracted great interest from both fundamental and practical aspects. In this study, we demonstrated that hydrophobicity of a silica nanotube (SNT) array can be easily controlled by the SNT aspect ratio. In addition, the adhesive and anti-adhesive properties were controlled without modifying the hydrophobic surface. Various silica structures on a polydimethylsiloxane substrate were prepared using the desired alumina template. Bundle-arrayed and bowl-arrayed silica surfaces exhibited extraordinary superhydrophobicity due to the large frontal surface area and hierarchical micro/nanostructure. As the strategy used in this study is biocompatible and a wide range of hydrophobicities are capable of being controlled by the SNT aspect ratio, a hydrophobic surface composed of an SNT array could be an attractive candidate for bioapplications, such as cell and protein chips.
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