| 초록 |
Surface-enhanced Raman scattering utilizing plasmonic metals combined with TMD materials has received much attention in bio-applications due to highly enhanced detection sensitivity. Plasmonic metal NPs have superior optical properties due to the resonant oscillation of stimulated electrons on the surface, i.e. LSPR. 2D MoS2 nanosheet has been regarded as a NIR absorbing agent because of the high absorption in the NIR region. In addition, it is reported to exhibit enhanced Raman signals due to the electromagnetic field enhancement by abundant free electrons. In this study, we report unconventional SERS-based sensors consisting of ultrathin 2D MoS2 NS decorated Au nanoworms. Au NW was prepared by dopamine based self-assembly of Au NPs. To enhance the plasmon coupling effects, the gap between Au NW and MoS2 was further controlled by regulating the dopamine spacer. The correlation between the configuration of the hybrid NWs and the SERS performance was comprehensively investigated. |
