Patent ID: 8241508
Filing Date: 2012-08-14
Classification: B01L,B05D,B82Y,C03C,G01N,H01J,Y10T

Abstract:
1. A method of making a super-hydrophobic composite material having sharp surface features comprising the steps of: making a fused composite body, said making step comprising: treating a cut surface of said fused composite body with said preselected etchant, wherein said etchant simultaneously etches the recessive and protrusive phases, for a sufficient time so that said protrusive phase protrudes from said fused composite body to form a plurality of sharp surface features having a conical shape, and said recessive phase defines a recessed surface area between said surface features; cutting the fused composite body in a transverse direction to form a plate; and coating said plurality of sharp surface features with a hydrophobic material, wherein a cross sectional area of a tip portion of said coated sharp features is less than 30% of a cross sectional area of a base portion of said sharp features.