Crossover from Intermittent to Continuum Dynamics for Locally Driven Colloids TeX Export

@article{ReichhardtReichhardtPRL2006, abstract = {We simulate a colloid with charge \$q{\_{d}}\$ driven through a disordered assembly of interacting colloids with charge \$q\$ and show that, for \$q{\_{d}}\approx q\$, the velocity-force relation is nonlinear and the velocity fluctuations of the driven particle are highly intermittent with a \$1/f\$ characteristic. When \$q{\_{d}} >> q\$, the average velocity drops, the velocity-force relation becomes linear, and the velocity fluctuations are Gaussian. We discuss the results in terms of a crossover from strongly intermittent heterogeneous dynamics to continuum dynamics. We also make several predictions for the transient response in the different regimes.}, author = {Reichhardt, C. and Reichhardt, Olson C. J.}, citeulike-article-id = {1574438}, citeulike-linkout-0 = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000096000002028301000001&idtype=cvips&gifs=yes}, citeulike-linkout-1 = {http://link.aps.org/abstract/PRL/v96/e028301}, citeulike-linkout-2 = {http://dx.doi.org/10.1103/PhysRevLett.96.028301}, doi = {10.1103/PhysRevLett.96.028301}, journal = {Physical Review Letters}, keywords = {2d, microrheology, simulation}, number = {2}, posted-at = {2007-08-19 00:01:42}, priority = {2}, publisher = {APS}, title = {Crossover from Intermittent to Continuum Dynamics for Locally Driven Colloids}, url = {http://dx.doi.org/10.1103/PhysRevLett.96.028301}, volume = {96}, year = {2006} }

TY - JOUR ID - ReichhardtReichhardtPRL2006 L3 - citeulike-article-id:1574438 N2 - We simulate a colloid with charge $q{_{d}}$ driven through a disordered assembly of interacting colloids with charge $q$ and show that, for $q{_{d}}\approx q$, the velocity-force relation is nonlinear and the velocity fluctuations of the driven particle are highly intermittent with a $1/f$ characteristic. When $q{_{d}} >> q$, the average velocity drops, the velocity-force relation becomes linear, and the velocity fluctuations are Gaussian. We discuss the results in terms of a crossover from strongly intermittent heterogeneous dynamics to continuum dynamics. We also make several predictions for the transient response in the different regimes. IS - 2 JF - Physical Review Letters TI - Crossover from Intermittent to Continuum Dynamics for Locally Driven Colloids PB - APS VL - 96 KW - 2d KW - microrheology KW - simulation AU - Reichhardt, C AU - Reichhardt, Olson PY - 2006/// UR - http://dx.doi.org/10.1103/PhysRevLett.96.028301 ER -