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
Show more…
    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
Department
Physique
Language
  • English
Classification
Physics
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/301498
Statistics

Document views: 3 File downloads:
  • scheffold_ged.pdf: 4