Schematic illustration of the fabrication program of the SERS substrates. The ordered array of nanopillar structures on the cicada wing was used directly as the template. The SEM image and schematic illustration of the nanopillar structures are shown. The Au films were deposited on the cicada wings to engineer the nanostructures and define the gap size.
Jiwei et al. Nanoscale Research Letters 2013 8:437 doi:10.1186/1556-276X-8-437