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Micro/Nanofabrication by Spin Dewetting on a Poly(Dimethylsiloxane) Mold

  • Nicholas Ferrell (a1), Aimee Bross (a2) and Derek Hansford (a1)

Abstract

The process of spin dewetting was used to fabricate polymer micro and nanostructures from poly(methyl methacrylate) (PMMA), poly (propyl methacrylate) (PPMA), and polystyrene (PS). Polymer structures were formed on poly(dimethylsiloxane) (PDMS) molds by dewetting of a polymer solution during spin coating. Features were removed from the mold using heat and pressure to transfer the polymer to silicon or glass substrates. By varying the coating conditions, a variety of different polymer feature morphologies were obtained for a given PDMS mold geometry. In this study, the ability to fabrication polymer micro and nanostructures using spin dewetting was demonstrated on a variety of PDMS mold geometries. The effects of polymer solution concentration and mold feature size on the resulting polymer structures were examined. In addition, microfabricated PMMA structures were used as etch masks for anisotropic etching of silicon in an aqueous solution of tetramethylammonium hydroxide (TMAH).

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Micro/Nanofabrication by Spin Dewetting on a Poly(Dimethylsiloxane) Mold

  • Nicholas Ferrell (a1), Aimee Bross (a2) and Derek Hansford (a1)

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