Imaging of resonant quenching of surface plasmons by quantum dots

Manuel J. Romero, Jao Van De Lagemaat, Ivan Mora-Sero, Gary Rumbles, Mowafak M. Al-Jassim

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

In scanning tunneling microscopy (STM), confinement of surface plasmons to the optical cavity formed at the metallic tunneling gap stimulates the emission of light. We demonstrate that quantum dots (QDs) found in such a cavity give rise to discrete, observable transitions in the tunneling luminescence spectrum due to the resonant extinction of the plasmon. The observed resonances represent a fingerprint of the QD and occur at the optical band gap owing to the nearly simultaneous transfer of carriers from both sides of the tunneling gap to the QD. The resonant quenching of surface plasmons enables a new imaging technique, dubbed plasmon resonance imaging, with a spatial resolution potentially similar to that of STM and the energy resolution of optical spectroscopies. This detection and imaging strategy is not restricted to QDs, being of great interest to an entire spectrum of nanostructures, from molecular assemblies and biomolecules to carbon nanotubes.

Original languageEnglish
Pages (from-to)2833-2837
Number of pages5
JournalNano Letters
Volume6
Issue number12
DOIs
Publication statusPublished - Dec 2006

Fingerprint

Plasmons
plasmons
Semiconductor quantum dots
Quenching
quenching
quantum dots
Imaging techniques
Scanning tunneling microscopy
scanning tunneling microscopy
Light extinction
cavities
Carbon Nanotubes
Optical band gaps
Biomolecules
Electron transitions
imaging techniques
assemblies
Luminescence
Nanostructures
Carbon nanotubes

ASJC Scopus subject areas

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Chemistry (miscellaneous)

Cite this

Romero, M. J., Van De Lagemaat, J., Mora-Sero, I., Rumbles, G., & Al-Jassim, M. M. (2006). Imaging of resonant quenching of surface plasmons by quantum dots. Nano Letters, 6(12), 2833-2837. https://doi.org/10.1021/nl061997s

Imaging of resonant quenching of surface plasmons by quantum dots. / Romero, Manuel J.; Van De Lagemaat, Jao; Mora-Sero, Ivan; Rumbles, Gary; Al-Jassim, Mowafak M.

In: Nano Letters, Vol. 6, No. 12, 12.2006, p. 2833-2837.

Research output: Contribution to journalArticle

Romero, MJ, Van De Lagemaat, J, Mora-Sero, I, Rumbles, G & Al-Jassim, MM 2006, 'Imaging of resonant quenching of surface plasmons by quantum dots', Nano Letters, vol. 6, no. 12, pp. 2833-2837. https://doi.org/10.1021/nl061997s
Romero MJ, Van De Lagemaat J, Mora-Sero I, Rumbles G, Al-Jassim MM. Imaging of resonant quenching of surface plasmons by quantum dots. Nano Letters. 2006 Dec;6(12):2833-2837. https://doi.org/10.1021/nl061997s
Romero, Manuel J. ; Van De Lagemaat, Jao ; Mora-Sero, Ivan ; Rumbles, Gary ; Al-Jassim, Mowafak M. / Imaging of resonant quenching of surface plasmons by quantum dots. In: Nano Letters. 2006 ; Vol. 6, No. 12. pp. 2833-2837.
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