DPG Phi
Verhandlungen
Verhandlungen
DPG

Regensburg 2010 – scientific programme

Parts | Days | Selection | Search | Downloads | Help

DY: Fachverband Dynamik und Statistische Physik

DY 16: Anomalous Transport I (talks contributed by BP)

DY 16.1: Talk

Wednesday, March 24, 2010, 09:30–09:45, H38

Elucidating the origin of anomalous diffusion in crowded fluidsJedrzej Szymanski and •Matthias Weiss — Cellular Biophysics Group, German Cancer Research Center, Heidelberg

Anomalous diffusion in crowded fluids, e.g. in the cytoplasm of living cells, is a frequent phenomenon. So far, however, the associated stochastic process, i.e. the propagator of the random walk, has not been uncovered. Here, we show by means of fluorescence correlation spectroscopy and simulations that the properties of crowding-induced subdiffusion are consistent with the predictions for fractional Brownian motion or obstructed (percolation-like) diffusion, both of which have stationary increments. In contrast, our experimental results cannot be explained by a continuous time random walk with its distinct non-Gaussian propagator.

Reference J. Szymanski & M. Weiss, Phys. Rev. Lett. 103, 038102 (2009).

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2010 > Regensburg