4 papers · 1 filter
Characterization of active matter in dense suspensions with heterodyne laser Doppler velocimetry
Johannes Sachs, S. Nikhilesh Kottapalli, Peer Fischer +2
We present a novel approach for characterizing the properties and performance of active matter in dilute suspension as well as in crowded environments. We use Super-Heterodyne Lase…
Demonstration of variable angle Super-Heterodyne Dynamic Light Scattering for measuring colloidal dynamics
Daniel Crowley, Riande I Dekker, Denis Botin +8
We demonstrate a prototype light scattering instrument combining a frequency domain approach to the intermediate scattering function from Super-Heterodyning Doppler Velocimetry wit…
Non-Monotonic Concentration Dependence of the Electro-Phoretic Mobility of Charged Spheres in Realistic Salt Free Suspensions
Denis Botin, Felix Carrique, Emilio Ruiz-Reina +1
Using super-heterodyne Doppler velocimetry with multiple scattering correction, we extend the opti-cally accessible range of concentrations in experiments on colloidal electro-kine…
Colloidal electro-phoresis in the presence of symmetric and asymmetric electro-osmotic flow
Denis Botin, Jennifer Wenzl, Ran Niu +1
We characterize the electro-phoretic motion of charged sphere suspensions in the presence of substantial electro-osmotic flow using a recently introduced small angle super-heterody…