Publications by Matthias Grimm

Brownian Motion: A Study in Simple and Complex Fluids

EPFL2013

High-resolution detection of Brownian motion for quantitative optical tweezers experiments

We have developed an in situ method to calibrate optical tweezers experiments and simultaneously measure the size of the trapped particle or the viscosity of the surrounding fluid. The positional fluctuations of the trapped particle are recorded with a hig ...

Amer Physical Soc2012

Brownian motion in a Maxwell fluid

Sylvia Jeney, Matthias Grimm

The equilibrium dynamics of a spherical particle immersed in a complex Maxwell fluid is analyzed in terms of velocity autocorrelation function (VACF), mean-square displacement (MSD), and power spectral density (PSD). We elucidate the role of hydrodynamic m ...

Royal Society of Chemistry2011

Resonances arising from hydrodynamic memory in Brownian motion

László Forró, Flavio Maurizio Mor, Giuseppe Foffi, Sylvia Jeney, Maxim Belushkin, Matthias Grimm

Observation of the Brownian motion of a small probe interacting with its environment provides one of the main strategies for characterizing soft matter. Essentially, two counteracting forces govern the motion of the Brownian particle. First, the particle i ...

2011