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In this Letter, the nanoporous anodic alumina membranes (nanoPAAM) were first fabricated by the two-step anodic oxidisation method, and then based on these nanoPAAM master molds, polymer polymethylmethacrylate nanopillars with controllable heights and diameters were achieved by the direct casting method. Subsequently, combined with the ultraviolet lithography or electron beam lithography, a kind of...
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