Paradoxical Brownian motion in a microfluidic device

Absolute negative mobility

R. Eichhorn, Alexandra Ros, J. Regtmeier, T. Tu Duong, P. Reimann, D. Anselmetti

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Pages (from-to)159-164
Number of pages6
JournalEuropean Physical Journal: Special Topics
Volume143
Issue number1
DOIs
StatePublished - Apr 2007
Externally publishedYes

Fingerprint

Lab-on-a-chip
Thermal noise
microfluidic devices
Brownian movement
thermal noise
Microfluidics
alternating current
chips
Electric fields
microstructure
Microstructure
electric fields
Experiments
Hot Temperature

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Materials Science(all)
  • Physical and Theoretical Chemistry

Cite this

Paradoxical Brownian motion in a microfluidic device : Absolute negative mobility. / Eichhorn, R.; Ros, Alexandra; Regtmeier, J.; Tu Duong, T.; Reimann, P.; Anselmetti, D.

In: European Physical Journal: Special Topics, Vol. 143, No. 1, 04.2007, p. 159-164.

Research output: Contribution to journalArticle

Eichhorn, R. ; Ros, Alexandra ; Regtmeier, J. ; Tu Duong, T. ; Reimann, P. ; Anselmetti, D. / Paradoxical Brownian motion in a microfluidic device : Absolute negative mobility. In: European Physical Journal: Special Topics. 2007 ; Vol. 143, No. 1. pp. 159-164.
@article{5a466e6543634f9ab79ba3536861ab36,
title = "Paradoxical Brownian motion in a microfluidic device: Absolute negative mobility",
abstract = "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.",
author = "R. Eichhorn and Alexandra Ros and J. Regtmeier and {Tu Duong}, T. and P. Reimann and D. Anselmetti",
year = "2007",
month = "4",
doi = "10.1140/epjst/e2007-00083-1",
language = "English (US)",
volume = "143",
pages = "159--164",
journal = "European Physical Journal: Special Topics",
issn = "1951-6355",
publisher = "Springer Verlag",
number = "1",

}

TY - JOUR

T1 - Paradoxical Brownian motion in a microfluidic device

T2 - Absolute negative mobility

AU - Eichhorn, R.

AU - Ros, Alexandra

AU - Regtmeier, J.

AU - Tu Duong, T.

AU - Reimann, P.

AU - Anselmetti, D.

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.

UR - http://www.scopus.com/inward/record.url?scp=34249082050&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34249082050&partnerID=8YFLogxK

U2 - 10.1140/epjst/e2007-00083-1

DO - 10.1140/epjst/e2007-00083-1

M3 - Article

VL - 143

SP - 159

EP - 164

JO - European Physical Journal: Special Topics

JF - European Physical Journal: Special Topics

SN - 1951-6355

IS - 1

ER -