Charging of drops impacting onto superhydrophobic surfaces

Author:

Díaz Diego1ORCID,Garcia-Gonzalez Diana12,Bista Pravash1ORCID,Weber Stefan A. L.13ORCID,Butt Hans-Jürgen1ORCID,Stetten Amy1ORCID,Kappl Michael1ORCID

Affiliation:

1. Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany

2. Physics of Fluids Group, Max Planck Center Twente for Complex Fluid Dynamics, Department of Science and Technology, University of Twente, P.O. Box 217, Enschede 7500 AE, The Netherlands

3. Department of Physics, Johannes Gutenberg University, Staudingerweg 10, 55128 Mainz, Germany

Abstract

We systematically quantify the charge of neutral water drops rebounding from superhydrophobic surfaces using electric fields and high-speed video imaging. The amount of charge depends mainly on the maximum spreading area of the drop.

Publisher

Royal Society of Chemistry (RSC)

Subject

Condensed Matter Physics,General Chemistry

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