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Issue 7, 2018
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Drop impact dynamics on slippery liquid-infused porous surfaces: influence of oil thickness

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Abstract

Slippery liquid-infused porous surfaces (SLIPS) are porous nanostructures impregnated with a low surface tension lubricant. They have recently shown great promise in various applications that require non-wettable superhydrophobic surfaces. In this paper, we investigate experimentally the influence of the oil thickness on the wetting properties and drop impact dynamics of new SLIPS. By tuning the thickness of the oil layer deposited through spin-coating, we show that a sufficiently thick layer of oil is necessary to avoid dewetting spots on the porous nanostructure and thus increasing the homogeneity of the liquid distribution. Drop impact on these surfaces is investigated with a particular emphasis on the spreading and rebound dynamics when varying the oil thickness and the Weber number.

Graphical abstract: Drop impact dynamics on slippery liquid-infused porous surfaces: influence of oil thickness

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Publication details

The article was received on 12 Oct 2017, accepted on 01 Jan 2018 and first published on 02 Jan 2018


Article type: Paper
DOI: 10.1039/C7SM02026K
Citation: Soft Matter, 2018,14, 1100-1107
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    Drop impact dynamics on slippery liquid-infused porous surfaces: influence of oil thickness

    M. Muschi, B. Brudieu, J. Teisseire and A. Sauret, Soft Matter, 2018, 14, 1100
    DOI: 10.1039/C7SM02026K

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