Authors: A Hartschuh H Qian C Georgi M Böhmler L Novotny
Publish Date: 2009/05/20
Volume: 394, Issue: 7, Pages: 1787-1795
Abstract
We review recent experimental studies on singlewalled carbon nanotubes on substrates using tipenhanced nearfield optical microscopy TENOM Highresolution optical and topographic imaging with sub 15 nm spatial resolution is shown to provide novel insights into the spectroscopic properties of these nanoscale materials In the case of semiconducting nanotubes the simultaneous observation of Raman scattering and photoluminescence PL is possible enabling a direct correlation between vibrational and electronic properties on the nanoscale So far applications of TENOM have focused on the spectroscopy of localized phonon modes local band energy renormalizations induced by charge carrier doping the environmental sensitivity of nanotube PL and internanotube energy transfer At the end of this review we discuss the remaining limitations and challenges in this field
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