Measurement of the complex dielectric constant of a single gold nanoparticle.
- Stoller P Laboratory of Physical Chemistry, ETH Zurich, 8093 Zurich, Switzerland.
- Jacobsen V
- Sandoghdar V
- 2006-08-02
Published in:
- Optics letters. - 2006
English
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.
- Language
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- English
- Open access status
- green
- Identifiers
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- DOI 10.1364/ol.31.002474
- PMID 16880860
- Persistent URL
- https://sonar.ch/global/documents/284861
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