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
-
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
-
- RERO DOC 17025
- DOI 10.1021/nl901745a
- Persistent URL
- https://folia.unifr.ch/unifr/documents/301498
Statistics
Document views: 35
File downloads:
- scheffold_ged.pdf: 100