3 years ago

Speckle-Visibility Spectroscopy of Depolarized Dynamic Light Scattering

Speckle-Visibility Spectroscopy of Depolarized Dynamic Light Scattering
Christoph Weder, Dominic A. Urban, Jens Natterodt, Sandor Balog, Alke Petri-Fink, David Bossert
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.

Publisher URL: http://dx.doi.org/10.1021/acs.jpcb.7b04971

DOI: 10.1021/acs.jpcb.7b04971

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