TY - JOUR
T1 - Paradoxical Brownian motion in a microfluidic device
T2 - Absolute negative mobility
AU - Eichhorn, R.
AU - Ros, A.
AU - Regtmeier, J.
AU - Tu Duong, T.
AU - Reimann, P.
AU - Anselmetti, D.
N1 - Funding Information:
We gratefully acknowledge financial support from the Deutsche Forschungsgemeinschaft within the Collaborative Research Project 613 (project D2) and RE 1344/3-1, and the ESF-program STOCHDYN.
PY - 2007/4
Y1 - 2007/4
N2 - We report on a paradoxical migration mechanism in a microstructured lab-on-a-chip environment. The phenomenon is based on a subtle interplay between Brownian motion (thermal noise), a periodic and symmetric microstructure, and a biased AC electric field. The resulting non-linear dynamics far from thermal equilibrium gives rise to absolute negative mobility, i.e. a migrational transport, which is - both for negative and positive bias - always opposite to the net acting force, in good agreement between experiment and theory.
AB - We report on a paradoxical migration mechanism in a microstructured lab-on-a-chip environment. The phenomenon is based on a subtle interplay between Brownian motion (thermal noise), a periodic and symmetric microstructure, and a biased AC electric field. The resulting non-linear dynamics far from thermal equilibrium gives rise to absolute negative mobility, i.e. a migrational transport, which is - both for negative and positive bias - always opposite to the net acting force, in good agreement between experiment and theory.
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U2 - 10.1140/epjst/e2007-00083-1
DO - 10.1140/epjst/e2007-00083-1
M3 - Article
AN - SCOPUS:34249082050
SN - 1951-6355
VL - 143
SP - 159
EP - 164
JO - European Physical Journal: Special Topics
JF - European Physical Journal: Special Topics
IS - 1
ER -