Vir. J. Nan. Sci. & Tech. / Volume 25 / Issue 6 / MICROFLUIDICS AND NANOFLUIDICS

Entropic Splitter for Particle Separation

Source: Phys. Rev. Lett. 108, 020604 (2012); http://dx.doi.org/10.1103/PhysRevLett.108.020604

Published 13 January 2012

ABSTRACT

^* Full Text: Access via Source Journal Abstract

PACS

PUBLICATION DATA

ISSN:

1553-9644 (online)

Publisher:

APS

D. Reguera,¹ A. Luque,¹ P. S. Burada,² G. Schmid,³ J. M. Rubí,¹ and P. Hänggi³
¹Departament de Física Fonamental, Facultat de Física, Universitat de Barcelona, Martí i Franquès 1, E-08028 Barcelona, Spain
²Max-Planck Institut für Physik komplexer Systeme, Nöthnitzer Str. 38, D-01187 Dresden, Germany
³Institut für Physik, Universität Augsburg, Universitätsstrasse 1, D-86135 Augsburg, Germany

Wepresent a particle separation mechanism which induces the motion ofparticles of different sizes in opposite directions. The mechanism isbased on the combined action of a driving force andan entropic rectification of the Brownian fluctuations caused by theasymmetric form of the channel along which particles proceed. Theentropic splitting effect shown could be controlled upon variation ofthe geometrical parameters of the channel and could be implementedin narrow channels and microfluidic devices.

History:	Received 9 September 2011; published 13 January 2012
Digital Object Identifier:	http://dx.doi.org/10.1103/PhysRevLett.108.020604

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Entropic Splitter for Particle Separation

Source: Phys. Rev. Lett. 108, 020604 (2012); http://dx.doi.org/10.1103/PhysRevLett.108.020604