superhydrophobic surfaces – TechConnect Briefs

Superhydrophobic Surfaces by Supercritical Fluid Technology

Ek Å., Turner C., Werner O., Wågberg L., SweTree Technologies, SE

The term superhydrophobicity is used to describe the effect when a water droplet is rolling off a surface instead of sliding. Superhydrophobic surfaces, like the surface of a Lotus leaf, have water-repellant and self-cleaning properties. [...]

Simple Fabrication of Hierarchical Structures on a Polymer Surface

Farshchian B., Hurst S.M., Ok J.T., Park S., Louisiana State University, US

In this study, inspired by multiscale structures found in nature like lotus leaf we will try to make multiscale structures on polymer surfaces to make their surface superhydrophobe. We introduce a novel and effective method [...]

Adhesion of Water on Flat Polymer Surfaces and Superhydrophobic Surfaces

Law K-Y, Zhao H., Samuel B., Xerox Corporation, US

The interaction of water droplet with flat polymer surfaces of varying hydrophobicity (contact angle) has been studied using a high-sensitivity microelectromechanical balance system (tensiometer). Both attractive force and pull-off force are studied as the water [...]

Hierarchical Superhydrophobic Surfaces Resist Water Droplet Impact

Varanasi K.K., Deng T., Hsu M., Bhate N., Massachusetts Institute of Technology, US

In this paper, we present static and dynamic wetting interactions of water droplets on a variety of superhydrophobic surfaces. For sessile droplets, wetting states were determined by measuring contact angles and comparing them to that [...]

Superhydrophobic Nanowire Surfaces for Drop Movement Using Magnetic Fields

Egatz-Gomez A., Melle S., García A.A., Lindsay S., Rubio M.A., Domínguez P., Picraux T., Taraci J., Clement T., Hayes M., Gust D., Arizona State University, US

We present a novel method to control water drop movement on superhydrophobic surfaces through magnetic fields. Water drops with paramagnetic particles can be moved on fractal Si-nanowire superhydrophobic surfaces at high speeds by displacing a [...]