09:30 〜 09:45
▲ [14a-C302-2] Efficient TERS Tip with Multiple Metal Grains
キーワード：Tip-enhanced Raman microscopy, Plasmonic tip structure, Multiple grain antennas
We present a study on the metal grains attached to the dielectric tip surface for producing higher and much consistent enhancement in TERS and discuss why tips with granular surface are much better than tips with smooth surfaces. We found that multiple grains arranged closely but discretely on a dielectric probe act as an efficient plasmonic antenna and that enhancement in TERS attains a maximum value for an optimized number of grains. This promising result will bring TERS to a new level where it can be utilized with more confidence for a stronger reproducible enhancement.