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Bouncing behaviors of suspension liquid drops on a superhydrophobic surface

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Abstract

This paper reveals three patterns of bouncing behaviors of suspension drops containing calcium carbonate (CaCO3) powder on a superhydrophobic surface with the aid of a high-speed camera. In transmission electron microscopy (TEM) observation, the particles of CaCO3 are shaped like sticks whose equivalent diameters are about 700 nm. Unlike a pure water drop, dense suspension drops cannot be pinched off at the bounce on the superhydrophobic surface due to a high effective viscosity, whereas the equilibrium contact angle appears to be almost identical in all kinds of droplets.

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Reference

  • Batchelor GK, Green JT (1972) The determination of the bulk stress in a suspension of spherical particles to order c 2. J Fluid Mech 56:401–427

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Acknowledgement

The present authors would express their sincere thanks to Professor Ohnuki and Dr. Wang of Hokkaido University for their helps in scanning the TEM image of Fig. 1.

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Authors and Affiliations

  1. Division of Materials Science and Engineering, Hokkaido University, Hokkaido, 060-8628, Japan

    Y. Ueda, S. Yokoyama & M. Iguchi

  2. Department of Mechanical Engineering, Setsunan University, 17-8, Ikedanakamachi, Neyagawa, Osaka, 572-8508, Japan

    M. Nomura & R. Tsujino

Authors
  1. Y. Ueda
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  2. S. Yokoyama
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  3. M. Nomura
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  4. R. Tsujino
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  5. M. Iguchi
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Corresponding author

Correspondence to Y. Ueda.

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Ueda, Y., Yokoyama, S., Nomura, M. et al. Bouncing behaviors of suspension liquid drops on a superhydrophobic surface. J Vis 13, 281–283 (2010). https://doi.org/10.1007/s12650-010-0051-0

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  • DOI: https://doi.org/10.1007/s12650-010-0051-0

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