Nano Archive

Femtonewton Force Sensing with Optically Trapped Nanotubes

Marago, O. M. and Jones, P. H. and Bonaccorso, F. and Scardaci, V. and Gucciardi, P. G. and Rozhin, A. G. and Ferrari, A. C. (2008) Femtonewton Force Sensing with Optically Trapped Nanotubes. NANO LETTERS, 8 (10). pp. 3211-3216.

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We extract the distribution of both center-of-mass and angular fluctuations from three-dimensional tracking of optically trapped nanotubes. We measure the optical force and torque constants from autocorrelation and cross-correlation of the tracking signals. This allows us to isolate the angular Brownian motion. We demonstrate that nanotubes enable nanometer spatial and femtonewton force resolution in photonic force microscopy, the smallest to date. This has wide implications in nanotechnology, biotechnology, nanofluidics, and material science.

Item Type:Article
Subjects:Analytical Science > Microscopy and probe methods
Physical Science > Nano objects
Physical Science > Photonics
ID Code:1913
Deposited By:Farnush Anwar
Deposited On:16 Dec 2008 15:25
Last Modified:04 Feb 2009 09:17

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