Water-Repellent Silicon Surface with Nanostructure Formed by Catalysis of Single Nanosized Silver Particle

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概要

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• A water-repellent silicon (Si) surface with a nanostructure was formed by simple wet chemical etching using catalysis of a silver nanoparticle. Water repellency can be increased by forming micro- or nanostructures on the Si surface. A single nanosized silver particle dispersion solution was coated onto a Si(100) substrate with a polished surface. The samples were soaked in an aqueous etching solution of hydrofluoric acid and hydrogen peroxide. The roughness and depth of the surface structure increased with increasing etching time. The Si surface with the nanostructure had a contact angle of 130°, indicating a water-repellent surface, whereas the surface without the nanostructure had a contact angle of 68°.

• 2011-12-25

著者

• SAITO Nobuo

  Faculty of Environmental Information, Keio University

• Nishioka Kensuke

  Faculty of Engineering, University of Miyazaki, Miyazaki 889-2192, Japan

• Yoshino Kenji

  Faculty of Engineering, University of Miyazaki, Miyazaki 889-2192, Japan

• Sueto Tsuyoshi

  Faculty of Engineering, University of Miyazaki, Miyazaki 889-2192, Japan

• Saito Nobuo

  Faculty of Engineering, University of Miyazaki, Miyazaki 889-2192, Japan

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• Water-Repellent Silicon Surface with Nanostructure Formed by Catalysis of Single Nanosized Silver Particle

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