Open Access Open Badges Nano Express

Studying the local character of Raman features of single-walled carbon nanotubes along a bundle using TERS

Niculina Peica*, Christian Thomsen and Janina Maultzsch

Author affiliations

Institut für Festkörperphysik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germany

For all author emails, please log on.

Citation and License

Nanoscale Research Letters 2011, 6:174  doi:10.1186/1556-276X-6-174

Published: 25 February 2011


Here, we show that the Raman intensity of the G-mode in tip-enhanced Raman spectroscopy (TERS) is strongly dependent on the height of the bundle. Moreover, using TERS we are able to position different single-walled carbon nanotubes along a bundle, by correlating the observed radial breathing mode (RBM) with the AFM topography at the measuring point. The frequency of the G- mode behaves differently in TERS as compared to far-field Raman. Using the RBM frequency, the diameters of the tubes were calculated and a very good agreement with the G--mode frequency was observed.