1.
Phys Rev Lett
; 102(7): 076103, 2009 Feb 20.
Article
in English
| MEDLINE
| ID: mdl-19257694
ABSTRACT
Models and microfluidic experiments are presented of an electrophoretic separation technique in which charged particles whose mobilities exceed a tunable threshold are trapped between the crests of a longitudinal electric wave traveling through a stationary viscous fluid. The wave is created by applying periodic potentials to electrode arrays above and below a microchannel. Predicted average velocities agree with experiments and feature chaotic attractors for intermediate mobilities.