title: Microfluidic mixing via acoustically driven chaotic advection.
abstract: Mixing presents a notoriously difficult problem in small amounts of fluids. Herein, surface acoustic waves provide a convenient technique to generate time-dependent flow patterns. These flow patterns can be optimized in such a way that advected particles are mixed most efficiently in the fluid within a short time compared to the time pure diffusion would take. Investigations are presented for the mixing efficiency of a flat cylinder that is driven by two surface acoustic waves. The experimental results favorably agree with model calculations of the flow patterns and the advective transport.
authors.affiliation: Universität Augsburg, Institut für Physik, Universitätsstrasse 1, D-86135 Augsburg, Germany.
authors.forename: Thomas
authors.initials: T
authors.lastname: Frommelt
authors.forename: Marcin
authors.initials: M
authors.lastname: Kostur
authors.forename: Melanie
authors.initials: M
authors.lastname: Wenzel-Schäfer
authors.forename: Peter
authors.initials: P
authors.lastname: Talkner
authors.forename: Peter
authors.initials: P
authors.lastname: Hänggi
authors.forename: Achim
authors.initials: A
authors.lastname: Wixforth