Journal article

Giant enhanced diffusion of gold nanoparticles in optical vortex fields

  • Albaladejo, Silvia Departamento de Física de la Materia Condensada, Universidad Autónoma de Madrid, Spain
  • Marqués, Manuel I. Departamento de Física de Materiales, Universidad Autónoma de Madrid, Spain
  • Scheffold, Frank Department of Physics Fribourg Center for Nanomaterials, University of Fribourg, Switzerland
  • Sáenz, Juan Jose Departamento de Física de la Materia Condensada, Universidad Autónoma de Madrid, Spain
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    12.08.2009
Published in:
  • Nano Letters. - 2009, vol. 9, no. 10, p. 3527–3531
English We study the diffusion of a metal nanoparticle in the nonconservative force field of an optical vortex lattice. Radiation pressure in the vortex array is shown to induce a giant enhancement over the free thermal diffusion. Langevin dynamics simulations show that the diffusion coefficient of (50 nm radius) gold particles at room temperature is enhanced by 2 orders of magnitude at power densities of the order or smaller than those used to trap nanoparticles with optical tweezers.
Faculty
Faculté des sciences et de médecine
Department
Département de Physique
Language
  • English
Classification
Physics
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/301498
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