[22p-E201-1~9] プローブ顕微鏡を用いたナノスケール化学分光の最前線

▲ [22p-E201-4] Au-coating Silver Nanowire based TERS probe
How high EF and long lifetime can we get?

Wen Han¹、Beatrice Fortuni²、Shujichi Toyouchi³、Tomoko Inose⁴、Kenji Hirai¹、Yasuhiko Fujita⁵、〇Hiroshi Ujii^1,2,4 (1.RIES, Hokkaido Univ.、2.KU Leuven、3.National Yang Ming Chiao Tung Univ.、4.iCeMS, Kyoto Univ.、5.Toray Research Center, Inc.)

キーワード：TERS, silver nanowire, Raman spectroscopy

Tip-enhanced Raman scattering (TERS) microscopy is a unique technique to investigate surface at the nanoscale thanks to its excellent properties, such as label-free functionality, non-invasiveness, and the ability to simultaneously provide topographic and chemical information. So far, we have developed silver nanowire (AgNW)-based TERS probes, which achieve high TERS performance with excellent probe reproductivity but still present a short lifetime due to oxidation. In this work, a simple Au coating method is proposed to prolong the probe lifetime significantly.