[10p-Z17-1~19] 3.12 Nanoscale optical science and near-field optics

[10p-Z17-8] Electromagnetic field analysis of propagation of SERRS light through one dimensional hotspots of silver nanowire dimers

〇Tamitake Itoh¹, Yuko S. Yamamoto², Jeyadevan Balachandran³ (1.AIST, 2.JAIST, 3.Univ. Shiga Pref.)

Keywords:silver nanowire dimer, surface plasmon, surface enhanced resonant Raman

Plasmonic nanoparticle dimer gaps, which distance is below 1 nm, are called hotspots where molecular dipoles and plasmon electromagnetically interact to each other, realizing strong coupling systems. The strong coupling effect modulates molecular resonance energy at hotspots by several hundred meV. Thus, such places are expected novel platform of photochemistry. However, the small volume of hotspots makes such application difficult. In the case of nanowire dimers, the hotspots are expected to be extended to 1000 mm (by 10⁴ times). We report electromagnetic field analysis of the propagation of SERRS light through the one-dimensional hotspots.