[22p-E201-1~9] Recent Progress in Nanoscale Chemical Spectroscopy by Scanning Probe Microscopy

▲ [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.)

Keywords: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.