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Water impacting on superhydrophobic macrotextures

Author

Listed:
  • Anaïs Gauthier

    (Physique and Mécanique des Milieux Hétérogènes, UMR 7636 du CNRS, ESPCI
    LadHyX, UMR 7646 du CNRS, École polytechnique)

  • Sean Symon

    (Physique and Mécanique des Milieux Hétérogènes, UMR 7636 du CNRS, ESPCI
    LadHyX, UMR 7646 du CNRS, École polytechnique)

  • Christophe Clanet

    (Physique and Mécanique des Milieux Hétérogènes, UMR 7636 du CNRS, ESPCI
    LadHyX, UMR 7646 du CNRS, École polytechnique)

  • David Quéré

    (Physique and Mécanique des Milieux Hétérogènes, UMR 7636 du CNRS, ESPCI
    LadHyX, UMR 7646 du CNRS, École polytechnique)

Abstract

It has been recently shown that the presence of macrotextures on superhydrophobic materials can markedly modify the dynamics of water impacting them, and in particular significantly reduce the contact time of bouncing drops, compared with what is observed on a flat surface. This finding constitutes a significant step in the maximization of water repellency, since it enables to minimize even further the contact between solid and liquid. It also opens a new axis of research on the design of super-structures to induce specific functions such as anti-freezing, liquid fragmentation and/or recomposition, guiding, trapping and so on. Here we show that the contact time of drops bouncing on a repellent macrotexture takes discrete values when varying the impact speed. This allows us to propose a quantitative analysis of the reduction of contact time and thus to understand how and why macrotextures can control the dynamical properties of bouncing drops.

Suggested Citation

  • Anaïs Gauthier & Sean Symon & Christophe Clanet & David Quéré, 2015. "Water impacting on superhydrophobic macrotextures," Nature Communications, Nature, vol. 6(1), pages 1-6, November.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms9001
    DOI: 10.1038/ncomms9001
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    Cited by:

    1. Yanhong Li & Wenchang Zhao & Ying Zhou & Shuxian Tang & Shiyu Wang & Yutong Zheng & Zuankai Wang & Pingan Zhu, 2024. "Ultrafast bounce of particle-laden droplets," Nature Communications, Nature, vol. 15(1), pages 1-11, December.

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