Development of Nanoarchitectured Nanoporous Metal Film Grating using Block Copolymer Micelle for Ultra-sensitive SERS Platform
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SERS is rapid and powerful spectroscopic technique for molecule detection by plasmonic metals. High performance SERS sensors containing plasmonic metals having large numbers of nanogaps should be designed because the nanogaps is key factor for enhancing electromagnetic properties. Although many studies have been reported, the formation of rich nanogaps and reliable processes are remaining tasks. The prepared grating nanoporous Au film having large numbers of nanopores exhibited high sensitivity and good reproducibility as a SERS substrate. In this presentation, we present the importance of grating size-dependent nanogap formation as a highly sensitive nanoporous plasmonic Au pattern films. In addition, we report a new nanoarchitecture technique using nanoporous Au pattern films and nanoparticles to form a rich nanogap. Precise nanogaps were created by the surface modification and control of surface charge of nanomaterials. The fabricated SERS substrates were examined and optimized to achieve the high-performance in LOD and EF values using various analytes and conditions.