Self-propelling Leidenfrost droplets on a variable topography surface

James Arter; David Cleaver; Kei Takashina; Andrew Rhead

doi:10.1063/1.5056249

Self-propelling Leidenfrost droplets on a variable topography surface

James Arter, David Cleaver, Kei Takashina, Andrew Rhead

Research output: Contribution to journal › Article › peer-review

25 Citations (SciVal)

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Abstract

Leidenfrost water droplets can self-propel on heated surfaces with ratcheted topography, a very useful characteristic for systems with excess heat where fluid flow without moving parts is desirable. Reliability and flow rate are significant concerns for such systems. Here, the effect of the surface profile on reliability and droplet velocity are investigated on a single device with a continuously adjustable millimetre-scale ratcheted surface. Conditions are described under which the droplet velocity can exceed 350 mm/s. The reliability of droplet propulsion is shown to be improved for ratchet geometries with an overhang.

Original language	English
Article number	243704
Journal	Applied Physics Letters
Volume	113
Issue number	24
DOIs	https://doi.org/10.1063/1.5056249
Publication status	Published - 10 Dec 2018

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.5056249

Accepted Manuscript.pdf
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Appl. Phys. Lett. 113, 243704 (2018) and may be found at https://doi.org/10.1063/1.5056249
Accepted author manuscript, 3.21 MBLicence: Unspecified

Cite this

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Self-propelling Leidenfrost droplets on a variable topography surface

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Andrew Rhead

Kei Takashina

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Self-propelling Leidenfrost droplets on a variable topography surface

Abstract

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Andrew Rhead

Kei Takashina

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