Active and Nonlinear Microrheology in Dense Colloidal Suspensions

Details Active and Nonlinear Microrheology in Dense Colloidal Suspensions Active and Nonlinear Microrheology in Dense Colloidal Suspensions

2008-10-15

arxiv.org/abs/0810.2627v1

Physical Review Letters 102, 248302 (2009)

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

10.1103/PhysRevLett.102.248302

We present a first-principles theory for the active nonlinear microrheology of colloidal model systems: for constant external force on a spherical probe particle embedded in a dense host dispersion, neglecting hydrodynamic interactions, we derive an exact expression for the friction. Within mode-coupling theory (MCT), we discuss the threshold external force needed to delocalize the probe from a host glass, and its relation to strong nonlinear velocity-force curves in a host fluid. Experimental microrheology data and simulations, which we performed, are explained with a simplified model.

Affiliated with

Also associated with

No associations

Rating

Active and Nonlinear Microrheology in Dense Colloidal Suspensions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Active and Nonlinear Microrheology in Dense Colloidal Suspensions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active and Nonlinear Microrheology in Dense Colloidal Suspensions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-302787