| 초록 |
Surface-enhanced Raman scattering (SERS) is powerful molecule detection spectroscopic technique by plasmonic metals. For high-performance, SERS substrates containing plasmonic metals with many nanogaps should be designed to attain enhanced Raman signal. The porous films can be possible solution to make uniform nanogaps by electrochemical deposition. To enhance the sensitivity of the metal film, we studied to make porous plasmonic grating films with uniform nanopores and grating structure to form rich hotspots. The porous metal films were deposited on grating electrode by electrochemical method and amphiphilic block copolymer micelles. The prepared grating nanoporous Au film with many pores showed high sensitivity and good reproducibility. In this research, we discuss the fabrication process of nanoporous Au grating films as a highly sensitive SERS substrate, including the preparation of grating electrode, control of the film thickness, and optimization methods for SERS performance. |
