Retrieval of the complex permittivity of spherical nanoparticles in a liquid host material from a spectral surface plasmon resonance measurement

Saarinen, Jarkko J.; Vartiainen, Erik M.; Peiponen, Kai-Erik
August 2003
Applied Physics Letters;8/4/2003, Vol. 83 Issue 5, p893
Academic Journal
A method for obtaining the complex permittivity of a Maxwell Garnett liquid with the aid of spectral surface plasmon resonance spectroscopy is presented. The Maxwell Garnett liquid is assumed to consist of small absorbing spherical inclusions in a host liquid. It is shown that the permittivity of the inclusions can be calculated if the optical constants of the host liquid are known. It is believed that such a method will gain increasing importance in the analysis of biological reactions.


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