[18a-211B-1~7] 4.1 Plasmonics and Nanophotonics

▲ [18a-211B-4] Tip-enhanced Raman study of Interwall Interactions in Multi-Walled Carbon Nanotube

〇(D)Ryo Kato¹, Shun Igarashi¹, Takayuki Umakoshi¹, Prabhat Verma¹ (1.Osaka Univ.)

Keywords:tip-enhanced Raman spectroscopy, multi-walled carbon nanotube, nano-imaging

We present nanoscale analysis of interwall interacrtions between adjacent walls of a MWNT by tip-enhanced Raman spectroscopy. Further we calculated the TERS signal intensity from a MWNT by considering the exponential decay of light intensity at the tip apex and the nanometric volume of the MWNT under illumination. Since the light filed is strongly locallized within nanometric volume near the tip apex, the illuminated area of the sample is also limited, which varies as the number of walls varies and hence affects the intensity of ner-field Raman scatering from the sample.