Optical trapping of carbon nanotubes and graphene

Autori

  • S. Vasi
  • M. A. Monaca
  • M. G. Donato
  • F. Bonaccorso
  • G. Privitera
  • O. Trushkevych
  • G. Calogero
  • B. Fazio
  • A. Irrera
  • M. A. Iatì
  • R. Saija
  • P. Denti
  • F. Borghese
  • P. H. Jones
  • A. C. Ferrari
  • P. G. Gucciardi
  • O. M. Maragò CNR-IPCF

DOI:

https://doi.org/10.1478/C1V89S1P090

Parole chiave:

Optical trapping, carbon nanotubes, graphene

Abstract

We study optical trapping of nanotubes and graphene. We extract the distribution of both centre-of-mass and angular fluctuations from three-dimensional tracking of these optically trapped carbon nanostructures. The optical force and torque constants are measured from auto and cross-correlation of the tracking signals. We demonstrate that nanotubes enable nanometer spatial, and femto-Newton force resolution in photonic force microscopy by accurately measuring the radiation pressure in a double frequency optical tweezers. Finally, we integrate optical trapping with Raman and photoluminescence spectroscopy demonstrating the use of a Raman and photoluminescence tweezers by investigating the spectroscopy of nanotubes and graphene flakes in solution. Experimental results are compared with calculations based on electromagnetic scattering theory.
Mount Aetna from Taormina by Thomas Cole (1843)

Dowloads

Pubblicato

2011-09-15

Fascicolo

Vol 89, SUPPLEMENT NO 1 (2011): ELS XIII Conference

Sezione

Conference Papers

Licenza

Creative Commons License
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