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Re-equilibrium of sessile droplets on vertically vibrating substrates

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Abstract

A dynamic model with a resonant vibration sessile droplet on the substrate was established, and the dynamic behavior of the vibration droplet was analyzed based on the vibration force, friction force, and contact force, including changes in contact angle, contact line, and then derived equations that yielded the spreading velocity and the final equilibrium angle, which will provide new ways to depict the motion of droplet spreading. In addition, the dynamic equation was used to describe the motion of the sessile droplets and to discuss the re-equilibrium state with the vibration process. Finally, we studied droplet dynamic motion by the changing contact angle via force analysis under vertical vibration conditions. The contact angle changed when vibration acted on the sessile droplet, the dynamic re-equilibrium contact angle prediction errors within 10%.

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The authors declare that the data supporting the findings of this study are available whin the paper.

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Acknowledgements

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2021R1A2C2013053).

Funding

This study was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2021R1A2C2013053).

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Authors and Affiliations

  1. Department of Mechanical Engineering, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Gyeonggi-do, 461-701, South Korea

    Xiguang Feng, YoungHoon Kim & Kyoung-Su Park

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  1. Xiguang Feng
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  2. YoungHoon Kim
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  3. Kyoung-Su Park
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Correspondence to Kyoung-Su Park.

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Author Xiguang Feng declares that he has no conflict of interest. Author YoungHoon Kim declares that he has no conflict of interest. Author Kyoung-Su Park declares that he has no conflict of interest.

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Feng, X., Kim, Y. & Park, KS. Re-equilibrium of sessile droplets on vertically vibrating substrates. Microsyst Technol 29, 1129–1136 (2023). https://doi.org/10.1007/s00542-023-05517-7

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