Detection of an individual single-wall carbon nanotube by tip-enhanced near-field Raman spectroscopy

✍ Scribed by Norihiko Hayazawa; Takaaki Yano; Hiroyuki Watanabe; Yasushi Inouye; Satoshi Kawata

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 373 KB
• Volume: 376
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/s0009-2614(03)00883-2

✦ Synopsis

A tip-enhanced near-field Raman microscope has been applied to the detection of an individual single-wall carbon nanotube (SWNT). The detected information is a color (Raman-shift) image of molecular distribution without having to resort to staining non-fluorescent molecules of interest. In addition to nanometric-sensing and -imaging capability, local field-enhancement of the metallic tip has been utilized to detect a weak Raman scattering from nanometer region, which cannot be observed by conventional micro-Raman configuration (far-field Raman). The experimental results are shown with analysis of distinct vibration modes of both radial breathing mode and G-band.