Diffusing-wave spectroscopy: Difference between revisions

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Revision as of 08:22, 22 October 2009

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{{Nolead|date=October 2009}}

==One-speckle diffusing-wave spectroscopy==

Diffusing-wave spectroscopy is an optical technique derived from [[dynamic light scattering]] (DLS) that studies the dynamics of light scatterers in the case of strong multiple scattering.

<ref>G. Maret and P. E. Wolf, Z. Phys. B: Condens. Matter 65, 409 1987</ref>

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It has been widely used to study colloidal suspensions, emulsions, foams, gels, biological media, etc. If carefully calibrated, DWS allows the measurement of particle motion in a complex medium and then its rheology ([[Microrheology]]).

==One-speckle diffusing-wave spectroscopy==

A laser light is sent inside the product and the outcoming transmitted or backscattered light is detected by an optoelectric sensor. The light intensity detected is the result of the interference of all the optical waves coming from the different light paths.