Planar Arrays of Nanoporous Gold Nanowires: When Electrochemical Dealloying Meets Nanopatterning

摘要: Nanoporous materials are of great interest for various technological applications including sensors based on surface-enhanced Raman scattering, catalysis, and biotechnology. Currently, tremendous efforts dedicated to the development porous one-dimensional improve properties such class materials. The main drawback synthesis approaches reported so far includes (i) short length nanowires, which cannot reach macroscopic scale, (ii) poor organization nanostructures obtained by end process. In this work, we report first time a two-step approach allowing creating highly ordered gold nanowire arrays with up few centimeters. This consists growth gold/copper alloy nanowires magnetron cosputtering nanograted silicon substrate, serving as physical template, followed selective dissolution copper an electrochemical anodic process in diluted sulfu...