Perspective-Quasi-Babinet Complementary Plasmonic Templates: A Platform to Perform Spectroelectrochemistry

Plasmonic bilayers fabricated by depositing metal on nanopillar or nanocavity arrays are an effective solution for the industrial scale production of plasmonic templates. Such structures commonly consist of a disk array and a quasi-Babinet complementary perforated film comprised of holes, which are displaced vertically by the pillar or cavity. Simultaneously, the continuous perforated film provides an electrically conductive network, which can be used as a working electrode. In this perspective, we briefly review the nanofabrication of plasmonic bilayer templates and their usage for applications in life science. We discuss quasi-Babinet complementary plasmonic templates as a potential platform to study membrane proteins through spectro-electrochemical investigations.