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Hot Water-Repellent Superhydrophobic Surfaces With Long-Term Stability

Author

Listed:
  • JI SEONG CHOI

    (Department of Mechanical Engineering, Chungnam National University, Daejeon 34134, Republic of Korea)

  • SEONG MIN KANG

    (Department of Mechanical Engineering, Chungnam National University, Daejeon 34134, Republic of Korea)

Abstract

In this paper, we fabricate and evaluate superhydrophobic surfaces with mushroom-shaped microstructures. Using a silicon master and polymer microstructure patterning, polydimethylsiloxane (PDMS) surfaces bearing mushroom-shaped structures with five different spacing ratios are prepared and tested with water droplets of different temperatures. The fabricated PDMS surfaces demonstrate superhydrophobicity even to high-temperature water droplets with decreased surface tension. We compare the experimental data with the theoretical results calculated based on the Cassie state and Eötvös rule. Our work suggests potential applications to control wettability with liquids of various temperatures.

Suggested Citation

  • Ji Seong Choi & Seong Min Kang, 2022. "Hot Water-Repellent Superhydrophobic Surfaces With Long-Term Stability," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 29(01), pages 1-9, January.
    • Handle: RePEc:wsi:srlxxx:v:29:y:2022:i:01:n:s0218625x22500044
    DOI: 10.1142/S0218625X22500044
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