Abstract
A method for the generation of protruded microstructures in polymer surfaces with an evaporating solvent drop, provided by a homemade syringe system, is presented. Either a concave surface topology is obtained by exposing the polymer surface to the vapor of a pendent solvent drop (noncontact mode) or a solvent drop is deposited on the polymer by moving the substrate up and down (contact mode). Thus a liquid bridge between syringe tip and polymer surface is formed and even convex microstructures can be generated for slow substrate retraction.
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