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A Statically Oleophilic but Dynamically Oleophobic Smooth Nonperfluorinated Surface

Authors

  • Dr. Dalton F. Cheng,

    1. National Institute of Advanced Industrial Science and Technology, 2266-98, Anagahora, Shimo-Shidami, Moriyama-ku, Nagoya, Aichi 463-8560 (Japan)
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  • Dr. Chihiro Urata,

    1. National Institute of Advanced Industrial Science and Technology, 2266-98, Anagahora, Shimo-Shidami, Moriyama-ku, Nagoya, Aichi 463-8560 (Japan)
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  • Dr. Makoto Yagihashi,

    1. Nagoya Municipal Industrial Research Institute, 3-4-41, Rokuban, Atsuta-ku, Nagoya, Aichi 456-0058 (Japan)
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  • Dr. Atsushi Hozumi

    Corresponding author
    1. National Institute of Advanced Industrial Science and Technology, 2266-98, Anagahora, Shimo-Shidami, Moriyama-ku, Nagoya, Aichi 463-8560 (Japan)
    • National Institute of Advanced Industrial Science and Technology, 2266-98, Anagahora, Shimo-Shidami, Moriyama-ku, Nagoya, Aichi 463-8560 (Japan)
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  • We are grateful to the City Area Program, Southern Gifu Area, Development of Advanced Medical Equipments by Utilizing Manufacturing and Information Technologies of the Ministry of Education, Culture, Sports, Science and Technology (MEXT) for partial support.

Abstract

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Nonstick: Dynamically oleophobic surfaces have been produced from low-molecular-weight poly(dimethylsiloxane) (PDMS) brush films. Despite the statically oleophilic nature of these nonroughened, nonperfluorinated surfaces, ultralow tilt angles (TAs) that set drops of various nonpolar liquids in motion were achieved. Heating the surfaces enhances droplet mobility by significantly reducing the TAs (see scheme; CA=contact angle).

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