Liquid drops start spreading directly after coming into contact with a partially wetting substrate. Although this phenomenon involves a three-phase contact line, the spreading motion is very fast. We study the initial spreading dynamics of low-viscosity drops using two complementary methods: molecular dynamics simulations and high-speed imaging. We access previously unexplored length and time scales and provide a detailed picture on how the initial contact between the liquid drop and the solid is established. Both methods unambiguously point toward a spreading regime that is independent of wettability, with the contact radius growing as the square root of time.
|Number of pages||4|
|Journal||Physical review E: Statistical, nonlinear, and soft matter physics|
|Publication status||Published - 2012|
Winkels, K. G., Weijs, J. H., Eddi, A., & Snoeijer, J. H. (2012). Initial spreading of low-viscosity drops on partially wetting surfaces. Physical review E: Statistical, nonlinear, and soft matter physics, 85(5), [055301(R)]. https://doi.org/10.1103/PhysRevE.85.055301