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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 7 — Apr. 1, 2009
  • pp: 1003–1005

Direct imaging of surface plasmon resonances on single triangular silver nanoprisms at optical wavelength using low-loss EFTEM imaging

J. Nelayah, L. Gu, W. Sigle, C. T. Koch, I. Pastoriza-Santos, L. M. Liz-Marzán, and P. A. van Aken  »View Author Affiliations


Optics Letters, Vol. 34, Issue 7, pp. 1003-1005 (2009)
http://dx.doi.org/10.1364/OL.34.001003


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Abstract

Using low-loss energy-filtering transmission electron microscopy (EFTEM) imaging, we map surface plasmon resonances (SPRs) at optical wavelengths on single triangular silver nanoprisms. We show that EFTEM imaging combining high spatial sampling and high energy resolution enables the detection and for the first time, to the best of our knowledge, mapping at the nanoscale of an extra multipolar SPR on these nanoparticles. As illustrated on a 276.5 nm long nanoprism, this eigenmode is found to be enhanced on the three edges where it exhibits a two-lobe distribution.

© 2009 Optical Society of America

OCIS Codes
(160.4760) Materials : Optical properties
(180.0180) Microscopy : Microscopy
(240.6680) Optics at surfaces : Surface plasmons
(300.0300) Spectroscopy : Spectroscopy
(350.4990) Other areas of optics : Particles
(160.4236) Materials : Nanomaterials

ToC Category:
Optics at Surfaces

History
Original Manuscript: December 1, 2008
Revised Manuscript: January 26, 2009
Manuscript Accepted: February 4, 2009
Published: March 23, 2009

Citation
J. Nelayah, L. Gu, W. Sigle, C. T. Koch, I. Pastoriza-Santos, L. M. Liz-Marzán, and P. A. van Aken, "Direct imaging of surface plasmon resonances on single triangular silver nanoprisms at optical wavelength using low-loss EFTEM imaging," Opt. Lett. 34, 1003-1005 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-7-1003


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