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Issue 19, 2017
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Effect of surface topography and wettability on the Leidenfrost effect

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Abstract

When deposited on a superheated surface, a droplet can be levitated by its own vapour layer, a phenomenon that is referred to as the Leidenfrost effect. This dynamic effect has attracted interest for many potential applications, such as cooling, drag reduction and drop transport. A lot of effort has been paid to this mechanism over the past two and half centuries. Herein, we not only review the classical theories but also present the most recent theoretical advances in understanding the Leidenfrost effect. We first review the basic theories of the Leidenfrost effect, which mainly focuses on the relationship between the drop shape, vapour layer and lifetime. Then, the shift in the Leidenfrost point realized by fabricating special surface textures is introduced and the mechanisms behind this are analyzed. Furthermore, we present the reasons for the droplet transport in both classical Leidenfrost and pseudo-Leidenfrost regimes. Finally, the promising breakthroughs of the Leidenfrost effect are briefly addressed.

Graphical abstract: Effect of surface topography and wettability on the Leidenfrost effect

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Publication details

The article was received on 15 Mar 2017, accepted on 14 Apr 2017 and first published on 18 Apr 2017


Article type: Review Article
DOI: 10.1039/C7NR01845B
Citation: Nanoscale, 2017,9, 6219-6236
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    Effect of surface topography and wettability on the Leidenfrost effect

    L. Zhong and Z. Guo, Nanoscale, 2017, 9, 6219
    DOI: 10.1039/C7NR01845B

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