Rectification of Mobile Leidenfrost Droplets by Planar Ratchets

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

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Author(s)

  • Xiaofeng Zhou
  • Yujie Zhang
  • Chonglei Hao
  • Fuwang Zhao
  • Hui Tang
  • Wenjing Ye

Detail(s)

Original languageEnglish
Article number1901751
Journal / PublicationSmall
Publication statusOnline published - 24 Jun 2019

Abstract

The self-transportation of mobile Leidenfrost droplets with well-defined direction and velocity on millimetric ratchets is one of the most representative and spectacular phenomena in droplet dynamics. Despite extensive progress in the ability to control the spatiotemporal propagation of droplets, it remains elusive how the individual ratchet units, as well as the interactions within their arrays, are translated into the collective droplet dynamics. Here, simple planar ratchets characterized by uniform height normal to the surface are designed. It is revealed that on planar ratchets, the transport dynamics of Leidenfrost droplets is dependent not only on individual units, but also on the elegant coordination within their arrays dictated by their topography. The design of planar ratchets enriches the fundamental understanding of how the surface topography is translated into dynamic and collective droplet transport behaviors, and also imparts higher applicability in microelectromechanical system based fluidic devices.

Research Area(s)

  • collective coordination, fluidic devices, individual effect, Leidenfrost droplets, rectification

Citation Format(s)

Rectification of Mobile Leidenfrost Droplets by Planar Ratchets. / Li, Jing; Zhou, Xiaofeng; Zhang, Yujie; Hao, Chonglei; Zhao, Fuwang; Li, Minfei; Tang, Hui; Ye, Wenjing; Wang, Zuankai.

In: Small, 24.06.2019.

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