Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials and Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, People's Republic of China.
Nanoscale. 2017 May 18;9(19):6219-6236. doi: 10.1039/c7nr01845b.
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.
当液滴沉积在过热表面上时，它会被自己的蒸汽层托起，这种现象被称为莱顿弗罗斯特效应。这种动态效应因其在许多潜在应用中的吸引力而受到关注，例如冷却、减阻和液滴传输。在过去的两个半世纪里，人们对这一机制进行了大量的研究。在此，我们不仅回顾了经典理论，还介绍了理解莱顿弗罗斯特效应的最新理论进展。我们首先回顾了莱顿弗罗斯特效应的基本理论，主要集中在液滴形状、蒸汽层和寿命之间的关系上。然后，介绍了通过制造特殊表面纹理实现莱顿弗罗斯特点的转变，并分析了背后的机制。此外，我们还介绍了在经典莱顿弗罗斯特和伪莱顿弗罗斯特两种模式下液滴传输的原因。最后，简要介绍了莱顿弗罗斯特效应的一些有前途的突破。
