Hydrophilic Domains Enhance Nanobubble Stability |
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| Authors: | Dr. Takashi Nishiyama Prof. Koji Takahashi Tatsuya Ikuta Dr. Yutaka Yamada Prof. Yasuyuki Takata |
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| Affiliation: | 1. Department of Aeronautics and Astronautics, Kyushu University, Fukuoka, Japan;2. International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Fukuoka, Japan;3. Department of Mechanical Engineering, Kyushu University, Fukuoka, Japan |
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| Abstract: | Highly stable nanoscale gas states at solid/liquid interfaces, referred to as nanobubbles, have been widely studied for over a decade. In this study, nanobubbles generated on a hydrophobic Teflon amorphous fluoroplastic thin film in the presence and absence of hydrophilic carbon domains are investigated by peak force quantitative nanomechanics. On the hydrophobic surface without hydrophilic domains, a small number of nanobubbles are generated and then rapidly decrease in size. On the hydrophobic surface with hydrophilic domains, the hydrophilic domains have a significant effect on the generation and stability of nanobubbles, with bubbles remaining on the surface for up to three days. |
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| Keywords: | atomic force microscopy hydrophilic domains hydrophobic surfaces nanobubbles solid/liquid interfaces |
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