Mathematical Institute, Radcliffe Observatory Quarter, Woodstock Road, Oxford, OX2 6GG, UK.
Soft Matter. 2017 Aug 9;13(31):5250-5260. doi: 10.1039/c7sm00990a.
We consider the flotation of deformable, non-wetting drops on a liquid interface. We consider the deflection of both the liquid interface and the droplet itself in response to the buoyancy forces, density difference and the various surface tensions within the system. Our results suggest new insight into a range of phenomena in which such drops occur, including Leidenfrost droplets and floating liquid marbles. In particular, we show that the floating state of liquid marbles is very sensitive to the tension of the particle-covered interface and suggest that this sensitivity may make such experiments a useful assay of the properties of these complex interfaces.
我们研究了可变形、不润湿的液滴在液体界面上的浮选。我们考虑了液体界面和液滴本身的偏转，以响应浮力、密度差以及系统内的各种表面张力。我们的研究结果为一系列涉及此类液滴的现象提供了新的认识，包括莱顿弗罗斯特液滴和漂浮的液体大理石。特别是，我们表明，液体大理石的漂浮状态对颗粒覆盖界面的张力非常敏感，并表明这种敏感性可能使此类实验成为这些复杂界面性质的有用检测方法。
