Single-particle plasmon resonance spectroscopy of phase transition in vanadium dioxide

Academic Article


  • We demonstrate thermally controlled plasmon resonance modulation of single gold nanoparticles on vanadium dioxide thin films by performing dark-field spectroscopy measurements at different temperatures. The plasmon resonance of the nanoparticles exhibits a significant blueshift in the visible range when the vanadium dioxide film undergoes its insulator-to-metal phase transition around 67 °C. More importantly, the resonance shift shows a clear hysteresis, mirroring the behavior of the vanadium dioxide film. At a fixed wavelength, the scattering intensity of Au particles also shows a hysteretic behavior decorated with an overshoot before (after) the insulator-metal (metal- insulator) phase transition of the vanadium dioxide film, suggesting that the nanoparticle is probing local variations in the phase transition. © 2010 Optical Society of America.
  • Published In

  • Optics Letters  Journal
  • Digital Object Identifier (doi)

    Author List

  • Lei DY; Appavoo K; Sonnefraud Y; Haglund RF; Maier SA
  • Start Page

  • 3988
  • End Page

  • 3990
  • Volume

  • 35
  • Issue

  • 23