期刊
PHYSICAL REVIEW LETTERS
卷 108, 期 7, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.108.074505
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资金
- HIPRINS
- Dutch Ministry of Economic Affairs, Agriculture and Innovation
- province Overijssel
- province Limburg
- province Noord-Brabant
- cityregion Eindhoven (SRE)
Liquid drops hitting solid surfaces deform substantially under the influence of the ambient air that needs to be squeezed out before the liquid actually touches the solid. Nanometer- and microsecond-resolved dual wavelength interferometry reveals a complex evolution of the interface between the drop and the gas layer underneath. For intermediate impact speeds ( We similar to 1 ... 10) the layer thickness can develop one or two local minima-reproduced in numerical calculations-that eventually lead to the nucleation of solid-liquid contact at a We-dependent radial position, from a film thickness >200 nm. Solid-liquid contact spreads at a speed involving capillarity, liquid viscosity and inertia.
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