Torque Detection using Brownian Fluctuations
- 22 November 2006
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 97 (21) , 210603
- https://doi.org/10.1103/physrevlett.97.210603
Abstract
We report the statistical analysis of the movement of a submicron particle confined in a harmonic potential in the presence of a torque. The absolute value of the torque can be found from the auto- and cross-correlation functions of the particle’s coordinates. We experimentally prove this analysis by detecting the torque produced onto an optically trapped particle by an optical beam with orbital angular momentum.Keywords
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