Measurement of the complex dielectric constant of a single gold nanoparticle
A differential interference contrast microscopy technique, which employs a photonic crystal fiber as a white-light source, is used to measure both the real and imaginary parts of the complex dielectric constant of single 10 and 15 nm gold nanoparticles over a wavelength range of 480 to 610 nm. Notic...
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| Veröffentlicht in: | arXiv.org 2006-05 |
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| creator | Stoller, Patrick Jacobsen, Volker Sandoghdar, Vahid |
| description | A differential interference contrast microscopy technique, which employs a photonic crystal fiber as a white-light source, is used to measure both the real and imaginary parts 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. |
| doi_str_mv | 10.48550/arxiv.0604174 |
| format | Article |
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| subjects | Crystal fibers Damping Gold Nanoparticles Permittivity Photonic crystals White light |
| title | Measurement of the complex dielectric constant of a single gold nanoparticle |
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