Directional transport of high-temperature Janus droplets mediated by structural topography

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Youmin Hou
  • Yahua Liu
  • Chonglei Hao
  • Manoj K. Chaudhury
  • Shuhuai Yao
  • Zuankai Wang

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)606-612
Journal / PublicationNature Physics
Volume12
Issue number6
Online published1 Feb 2016
Publication statusPublished - Jun 2016

Abstract

Directed motion of liquid droplets is of considerable importance in various water and thermal management technologies. Although various methods to generate such motion have been developed at low temperature, they become rather ineffective at high temperature, where the droplet transits to a Leidenfrost state. In this state, it becomes challenging to control and direct the motion of the highly mobile droplets towards specific locations on the surface without compromising the effective heat transfer. Here we report that the wetting symmetry of a droplet can be broken at high temperature by creating two concurrent thermal states (Leidenfrost and contact-boiling) on a topographically patterned surface, thus engendering a preferential motion of a droplet towards the region with a higher heat transfer coefficient. The fundamental understanding and the ability to control the droplet dynamics at high temperature have promising applications in various systems requiring high thermal efficiency, operational security and fidelity. © 2016 Macmillan Publishers Limited. All rights reserved.

Citation Format(s)

Directional transport of high-temperature Janus droplets mediated by structural topography. / Li, Jing; Hou, Youmin; Liu, Yahua et al.
In: Nature Physics, Vol. 12, No. 6, 06.2016, p. 606-612.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review