Elastomeric Molds with Tunable Microtopography


  • This work was supported by the National Science Foundation (CAREER Award to A. F.). Clean-room processing was done at the Washington Technology Center and SEM imaging was done at the Center for Nanotechnology at the University of Washington.


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Elastomeric “microtunable” molds (μTMs) whose microtopography can be tuned post-fabrication at certain pre-defined locations have been devised. Their features make them very attractive for the molding of complex microstructures. The Figure shows a scanning electron microscopy image of poly(dimethylsiloxane) double- replicas of a μTM whose membrane contains a 1.18 mm spiral.