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Design and Property of Directional Self-Cleaning Superoleophobic Surfaces

Design and Property of Directional Self-Cleaning Superoleophobic Surfaces.

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Design and Property of Directional Self-Cleaning Superoleophobic Surfaces

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  1. Design and Property of Directional Self-Cleaning Superoleophobic Surfaces Functional surfaces with self-cleaning property are highly desirable in many applications in the printing industry. In this study, we report the creation of textured surfaces on Si wafer by photolithography, followed by chemical modification, that are superoleophobic and exhibit directional self-cleaning property. The textured surfaces are made of micro grooves which demonstrate interesting anisotropic wetting behavior. In the direction parallel to the grooves, low surface tension testing liquids show very low sliding angle (i.e. directional self-cleaning) which is a key enabler for the self-cleaning effect. Textured surface obtained by deep silicon etching Droplets of water, Hexadecane, and Xerox colid ink on superhydrophobic surfaces. Kock-Yee Law and Hong Zhao Xerox Research Center Webster, Webster, New York Work performed at Cornell NanoScale Facility Daniel C. Ralph, Cornell University, ECCS - 0335765

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