Speckle-Visibility Spectroscopy of Depolarized Dynamic Light Scattering. 2017

David Bossert, and Jens Natterodt, and Dominic A Urban, and Christoph Weder, and Alke Petri-Fink, and Sandor Balog
Adolphe Merkle Institute, University of Fribourg , Chemin des Verdiers 4, 1700 Fribourg, Switzerland.

We show that the statistical analysis of photon counts in depolarized dynamic light scattering experiments allows for the accurate characterization of the rotational Brownian dynamics of particles. Unlike photon correlation spectroscopy, the technique is accurate even at low temporal resolution and enables discontinuous data acquisition, which offers several advantages. To demonstrate the usefulness of the method, we present a case study in which we analyze aqueous suspensions of tunicate cellulose nanocrystals and silica particles, and discuss aspects that are specific to particle sizing.

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