Mechanism of near-field raman enhancement in one-dimensional systems

L. G. Cançado, A. Jorio, A. Ismach, E. Joselevich, A. Hartschuh, L. Novotny

Research output: Contribution to journalArticlepeer-review


We develop a theory of near-field Raman enhancement in one-dimensional systems, and report supporting experimental results for carbon nanotubes. The enhancement is established by a laser-irradiated nanoplasmonic structure acting as an optical antenna. The near-field Raman intensity is inversely proportional to the 10th power of the separation between the enhancing structure and the one-dimensional system. Experimental data obtained from single-wall carbon nanotubes indicate that the Raman enhancement process is not significantly influenced by the specific phonon eigenvector, and is mainly defined by the properties of the nanoplasmonic structure.

Original languageEnglish
Article number186101
JournalPhysical Review Letters
Issue number18
StatePublished - 26 Oct 2009
Externally publishedYes


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