Abstract
We use a combination of numerical simulations and laboratory experiments to study the time-dependent collective diffusion coefficient $D(q, t)$ in concentrated colloidal suspensions. At short times, the particle configuration is frozen, and $D(q, t)$ probes the temporal and spatial evolution of hydrodynamic interactions, via their effects on the particle velocities. We find that $D(q, t)$ exhibits a surprising scaling behavior, with a single, $q$-dependent relaxation time, suggesting that the suspension behaves as an effective medium for hydrodynamic interactions over a wide range of length scales and time scales.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
