Sustaining Robust Cavities with Slippery Liquid–Liquid Interfaces

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Suwan Zhu
  • Tao Wu
  • Yucheng Bian
  • Chao Chen
  • Yiyuan Zhang
  • Jiawen Li
  • Dong Wu
  • Yanlei Hu
  • Jiaru Chu
  • Erqiang Li

Detail(s)

Original languageEnglish
Article number2103568
Journal / PublicationAdvanced Science
Volume9
Issue number7
Online published17 Jan 2022
Publication statusPublished - 4 Mar 2022

Link(s)

Abstract

The formation of a stable gas cavity on the surfaces of solid bodies is essential for many practical applications, such as drag reduction and energy savings, owing to the transformation of the originally sticky solid–liquid interface into a free-slip liquid–vapor interface by the creation of either liquid repellency or a Leidenfrost state on the surfaces. Here, it is shown that the simple infusion of a textured sphere with a smooth, slippery liquid layer can more easily create and sustain a stable gas cavity in a liquid at lower impact velocities compared to a dry solid sphere with the same contact angle. With a key parameter of curvature ratio, the early lamella dynamics during water entry of spheres and drops impact on planes are first unified. With the perspective of wetting transition, the unforeseen phenomenon of prone to cavity formation are successfully explained, which is the preferential lamella detachment from a slippery surface due to the higher viscosity of the lubricant relative to air. It is envisioned that the findings will provide an important and fundamental contribution to the quest for energy-efficient transport.

Research Area(s)

  • cavity formation, drag reduction, droplet impact, slippery surfaces, water entry, IMPACT DYNAMICS, SURFACES, DROPLET, INSTABILITY, FRICTION, ICE

Citation Format(s)

Sustaining Robust Cavities with Slippery Liquid–Liquid Interfaces. / Zhu, Suwan; Wu, Tao; Bian, Yucheng; Chen, Chao; Zhang, Yiyuan; Li, Jiawen; Wu, Dong; Hu, Yanlei; Chu, Jiaru; Li, Erqiang; Wang, Zuankai.

In: Advanced Science, Vol. 9, No. 7, 2103568, 04.03.2022.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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