Photoinduced Formation of Superhydrophobic Surface on Which Contact Angle of a Water Droplet Exceeds 170° by Reversible Topographical Changes on a Diarylethene Microcrystalline Surface
| Autor: | Kingo Uchida, Tsuyoshi Tsujioka, Seiji Yamazoe, Yuko Kojima, Hiroyuki Kiyohara, Naoki Nishikawa, Shinichiro Nakamura, Hiroyuki Mayama, Shingo Sakiyama, Satoshi Yokojima |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Surface Properties business.industry Temperature Water Surfaces and Interfaces Photochemical Processes Condensed Matter Physics Hydrocarbons Aromatic Crystal Contact angle chemistry.chemical_compound Optics Microcrystalline Diarylethene chemistry Chemical engineering Electrochemistry General Materials Science Irradiation business Hydrophobic and Hydrophilic Interactions Spectroscopy Visible spectrum Eutectic system |
| Zdroj: | Langmuir. 28:17817-17824 |
| ISSN: | 1520-5827 0743-7463 |
| DOI: | 10.1021/la3043846 |
| Popis: | A superhydrophobic surface on which the contact angle of a water droplet exceeds 170° was reversibly produced by alternate irradiation with UV and visible light. Superhydrophobicity is due to the formation of densely generated submicrometer sized needle-shaped crystals (less than 0.2-0.3 μm diameter and 2.2-2.5 μm long) at 30 °C, which is much lower than the eutectic temperature of either isomers of the diarylethene. Below the eutectic temperature, the generated crystals were much smaller than those generated above the eutectic temperature. These smaller crystals more effectively enhanced the superhydrophobicity. |
| Databáze: | OpenAIRE |
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