Torque Detection using Brownian Fluctuations

by: Giovanni Volpe, Dmitri Petrov

Physical Review Letters, Vol. 97, No. 21. (2006)

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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.

@article{citeulike:963666, 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.}, author = {Volpe, Giovanni and Petrov, Dmitri }, citeulike-article-id = {963666}, doi = {10.1103/PhysRevLett.97.210603}, journal = {Physical Review Letters}, keywords = {2006, focus, opticaltweezer, rotation}, number = {21}, posted-at = {2008-05-05 00:08:08}, priority = {2}, publisher = {APS}, title = {Torque Detection using Brownian Fluctuations}, url = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal\&id=PRLTAO000097000021210603000001\&idtype=cvips\&gifs=yes}, volume = {97}, year = {2006} }

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TY - JOUR ID - citeulike:963666 L3 - citeulike-article-id:963666 TI - Torque Detection using Brownian Fluctuations JF - Physical Review Letters VL - 97 IS - 21 PB - APS N2 - 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. KW - 2006 KW - focus KW - opticaltweezer KW - rotation AU - Volpe, Giovanni AU - Petrov, Dmitri PY - 2006/// UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000097000021210603000001&idtype=cvips&gifs=yes ER -

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