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Optics Letters

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  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 16 — Aug. 15, 2006
  • pp: 2474–2476

Measurement of the complex dielectric constant of a single gold nanoparticle

Patrick Stoller, Volker Jacobsen, and Vahid Sandoghdar  »View Author Affiliations


Optics Letters, Vol. 31, Issue 16, pp. 2474-2476 (2006)
http://dx.doi.org/10.1364/OL.31.002474


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Abstract

A differential interference contrast microscopy technique that employs a photonic crystal fiber as a white-light source is used to measure both the real and the imaginary part of the complex dielectric constant of single 10 and 15 nm gold nanoparticles over a wavelength range of 480 to 610 nm . Noticeable deviations from bulk gold measurements are observed at short wavelengths and for individual particles even after taking into account finite-size surface damping effects.

© 2006 Optical Society of America

OCIS Codes
(180.3170) Microscopy : Interference microscopy
(260.3910) Physical optics : Metal optics
(290.5850) Scattering : Scattering, particles
(300.6550) Spectroscopy : Spectroscopy, visible

ToC Category:
Physical Optics

History
Original Manuscript: May 9, 2006
Revised Manuscript: May 22, 2006
Manuscript Accepted: May 22, 2006
Published: July 25, 2006

Virtual Issues
Vol. 1, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Patrick Stoller, Volker Jacobsen, and Vahid Sandoghdar, "Measurement of the complex dielectric constant of a single gold nanoparticle," Opt. Lett. 31, 2474-2476 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-16-2474


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