The movement of a water droplet on a gradient surface prepared by photodegradation

Yoshihiro Ito, Mojgan Heydari, Ayako Hashimoto, Tomohiro Konno, Ayaka Hirasawa, Satomi Hori, Kimio Kurita, Akira Nakajima

研究成果: ジャーナルへの寄稿学術論文査読

164 被引用数 (Scopus)

抄録

A hydrophobic to hydrophilic gradient surface was prepared using the tuned photodegradation of an alkylsilane self-assembled monolayer (SAM) using irradiation of vacuum ultraviolet light (wavelength = 172 nm). The water contact angle on the photodegraded SAM surface was adjusted using the intensity and time photoirradiation parameters. The formation of a gradient was confirmed by fluorescent labeling. The water drop moved from the hydrophobic to hydrophilic surface with a velocity that depended on the gradient. The higher the gradient, the faster the water moved. For the first time, we have prepared a gradient surface using photodegradation where the movement of a water drop was regulated by the degree of gradation. Considering that the photodegradation technique can be applied to various surfaces and to lithography, this technique will be useful for various material surfaces.

本文言語英語
ページ(範囲)1845-1850
ページ数6
ジャーナルLangmuir
23
4
DOI
出版ステータス出版済み - 2007 2月 13

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