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Three dimensional aspects of droplet coalescence during dropwise condensation on superhydrophobic surfaces



Konrad Rykaczewski, John H. Scott, Sukumar Rajauria, W R. Ashurst, Jeff Chinn, Amy Chinn, Wanda Jones


We report formation of nano-to-microscale satellite droplets in the geometrical shadow of high contact angle primary drops during dropwise water condensation on a nanostructured superhydrophobic surface. The primary drops contribute to the heat transfer process by sweeping up satellite droplets without wetting their nucleation site and thus allowing for rapid condensation of multiple droplets from the same site.
Soft Matter


Droplet coalescence, Environmental Scanning Electron Microscopy, superhydrophobic surfaces
Created August 24, 2011, Updated February 19, 2017