58 citations · 118 across the 7 of their papers we have counts for
8 papers
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…
Controlled assembly of single colloidal crystals using electro-osmotic micro-pumps
Ran Niu, Erdal C. Oğuz, Hannah Müller +4
We assemble charged colloidal spheres at deliberately chosen locations on a charged unstructured glass substrate utilizing ion exchange based electro-osmotic micro-pumps. Using mic…
Assembly and speed control in ion exchange based modular phoretic micro-swimmers
Ran Niu, Denis Botin, Julian Weber +2
We report an experimental study on ion-exchange based modular micro-swimmers in low-salt water. Cationic ion-exchange particles and passive cargo particles assemble into self-prope…