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Wetting transitions in underwater oleophobic surface of brass
Vahid Hejazi1, Aniedi E Nyong, Pradeep K Rohatgi
1Department of Mechanical Engineering, College of Engineering & Applied Science, University of Wisconsin-Milwaukee, Milwaukee, WI 53211, USA.
Advanced Materials (Deerfield Beach, Fla.)
|September 5, 2012
Abstract:
An oil droplet in water can be in the Cassie state (with water and/or air trapped between the solid and oil) with a high contact angle (top left) or in the Wenzel state (top right). Depending on the roughness of the brass substrate, both states with high (bottom left) and low (bottom right) contact angle are observed.

