title: Studying the local character of Raman features of single-walled carbon nanotubes along a bundle using TERS.
abstract: 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.
authors.affiliation: Institut für Festkörperphysik, Technische Universität Berlin, Hardenbergstr, 36, 10623 Berlin, Germany. peica@physik.tu-berlin.de.
authors.forename: Niculina
authors.initials: N
authors.lastname: Peica
authors.forename: Christian
authors.initials: C
authors.lastname: Thomsen
authors.forename: Janina
authors.initials: J
authors.lastname: Maultzsch