Contact angle hysteresis on rough hydrophobic surface

ArticleinColloids and Surfaces A Physicochemical and Engineering Aspects 248(1-3):101-104 · November 2004with22 Reads
Impact Factor: 2.75 · DOI: 10.1016/j.colsurfa.2004.09.006


    In this short note, we report a quantitative investigation of the hysteresis of the Cassie and Wenzel drops on a given rough surface. The Cassie drop shows much less hysteresis compared to a Wenzel drop and is therefore preferred in applications involving moving droplets. The experimental measurements are compared with the various theoretical models for the apparent contact angles and recommendations are made.