- Conference date: 3–5 November 2010
- Location: Bad Honnef, (Germany)
We review the main concepts of the effective‐medium approach for the calculation of the optical properties of colloidal systems composed by small colloidal particles and then pose the corresponding problem for turbid colloids, that is, systems with colloidal particles as big as the incident wavelength. Several attempts to properly define and to calculate the effective electromagnetic response of turbid colloidal systems are presented with special emphasis on its non‐local (spatially dispersive) character and consequently on the problem of how to measure the corresponding effective index of refraction. For this purpose an alternative spectroscopy based on light refraction is proposed.
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