Influence of noise on force measurements

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

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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.

Original languageEnglish (US)
Article number170602
JournalPhysical review letters
Volume104
Issue number17
DOIs
StatePublished - Apr 28 2010

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Volpe, G., Helden, L., Brettschneider, T., Wehr, J., & Bechinger, C. (2010). Influence of noise on force measurements. Physical review letters, 104(17), [170602]. https://doi.org/10.1103/PhysRevLett.104.170602