Influence of noise on force measurements

Giovanni Volpe; Laurent Helden; Thomas Brettschneider; Jan Wehr; Clemens Bechinger

doi:10.1103/PhysRevLett.104.170602

Influence of noise on force measurements

Giovanni Volpe
, Laurent Helden
, Thomas Brettschneider
, Jan Wehr
, Clemens Bechinger

Research output: Contribution to journal › Article › peer-review

133 Scopus citations

Abstract

We demonstrate how the ineluctable presence of thermal noise alters the measurement of forces acting on microscopic and nanoscopic objects. We quantify this effect exemplarily for a Brownian particle near a wall subjected to gravitational and electrostatic forces. Our results demonstrate that the force-measurement process is prone to artifacts if the noise is not correctly taken into account.

Original language	English (US)
Article number	170602
Journal	Physical review letters
Volume	104
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.104.170602
State	Published - Apr 28 2010

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.104.170602

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abstract = "We demonstrate how the ineluctable presence of thermal noise alters the measurement of forces acting on microscopic and nanoscopic objects. We quantify this effect exemplarily for a Brownian particle near a wall subjected to gravitational and electrostatic forces. Our results demonstrate that the force-measurement process is prone to artifacts if the noise is not correctly taken into account.",

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AU - Wehr, Jan

AU - Bechinger, Clemens

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Y1 - 2010/4/28

N2 - We demonstrate how the ineluctable presence of thermal noise alters the measurement of forces acting on microscopic and nanoscopic objects. We quantify this effect exemplarily for a Brownian particle near a wall subjected to gravitational and electrostatic forces. Our results demonstrate that the force-measurement process is prone to artifacts if the noise is not correctly taken into account.

AB - We demonstrate how the ineluctable presence of thermal noise alters the measurement of forces acting on microscopic and nanoscopic objects. We quantify this effect exemplarily for a Brownian particle near a wall subjected to gravitational and electrostatic forces. Our results demonstrate that the force-measurement process is prone to artifacts if the noise is not correctly taken into account.

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Influence of noise on force measurements

Abstract

ASJC Scopus subject areas

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