FemtoNewton force sensing with optically trapped nanotubes

O.M. Marago, P.H. Jones, V. Scardaci, F. Bonaccorso, P.G. Gucciardi, Aleksey Rozhin, A.C. Ferrari

Research output: Contribution to journalArticlepeer-review

Abstract

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.
Original languageEnglish
Pages (from-to)3211-3216
Number of pages6
JournalNano Letters
Volume8
Issue number10
DOIs
Publication statusPublished - 4 Sept 2008

Keywords

  • center-of-mass
  • angular fluctuations
  • three-dimensional tracking
  • optically trapped nanotubes
  • optical force
  • torque constants
  • autocorrelation
  • cross-correlation
  • tracking signals
  • angular Brownian motion
  • nanotubes
  • nanometer spatial
  • femtonewton force resolution
  • photonic force microscopy
  • nanotechnology
  • biotechnology
  • nanofluidics
  • material science

Fingerprint

Dive into the research topics of 'FemtoNewton force sensing with optically trapped nanotubes'. Together they form a unique fingerprint.

Cite this