Microrheology was proposed almost twenty years ago as a technique to obtain rheological
properties in soft matter from the microscopic motion of colloidal tracers used as probes …

We consider a tracer particle on a lattice in the presence of immobile obstacles. Starting from
equilibrium, a force pulling on the particle is switched on, driving the system to a new …

Within a microscopic formalism for the nonequilibrium response of colloidal suspensions
driven by an external force, we study the active micro-rheology of a glass-forming colloidal …

A mode-coupling theory for the motion of a strongly forced probe particle in a dense colloidal
suspension is presented. Starting point is the Smoluchowski equation for N bath and a …

We present extensive molecular dynamics computer simulations of a glass-forming Yukawa
mixture, investigating the nonlinear response of a single particle that is pulled through the …

In a microrheological setup a single probe particle immersed in a complex fluid is exposed
to a strong external force driving the system out of equilibrium. Here, we elaborate …

We examine the response of a dense colloidal suspension to a local force applied by a
small magnetic bead. For small forces, we find a linear relationship between the force and …

Using computer simulations, colloidal systems in different external fields are investigated.
Colloid-polymer mixtures, described in terms of the Asakura-Oosawa (AO) model, are …

We study active microrheology in two-dimensional (2D) magnetic networks. To this end, we
use Langevin dynamics computer simulations where single non-magnetic or magnetic tracer …

We present results for the fluctuations of the displacement of a tracer particle on a planar
lattice pulled by a step force in the presence of impenetrable, immobile obstacles. The …