Background-free third harmonic imaging of gold nanorods

Nano Lett. 2009 Dec;9(12):4093-7. doi: 10.1021/nl902305w.

Abstract

Surface plasmon resonance exhibited by noble metal nanoparticles makes them attractive agents for advanced microscopic imaging applications. In this work we study third harmonic generation in gold nanorods under conditions of resonance of the laser frequency with the longitudinal plasmon mode. Large resonant enhancement and the symmetry properties of third harmonic generation allow for background-free, orientation sensitive optical imaging of individual nanoparticles.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Gold / chemistry*
  • Nanotechnology / methods*
  • Nanotubes / chemistry*
  • Nanotubes / ultrastructure*
  • Surface Plasmon Resonance / methods*

Substances

  • Gold