Abstract

The study of liquid droplets on solid surfaces is a well established research area. Static measurements include contact angle determinations which allow surface energy measurement. Dynamic measurements generally are reported on vibrating drops on mechanically or sonic driven surfaces. The general analysis of the physics of vibrating drops is complicated due to the internal degrees of freedom of the liquid and the stick or slip conditions at the liquid-solid contact line. Here we propose a simple and straightforward experimental method to measure the physical properties of droplets on highly hydrophobic surfaces. The first dynamic experiments of droplets on superhydrophobic surfaces are also reported.

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