UCL  IRIS
Institutional Research Information Service
UCL Logo
Please report any queries concerning the funding data grouped in the sections named "Externally Awarded" or "Internally Disbursed" (shown on the profile page) to your Research Finance Administrator. Your can find your Research Finance Administrator at https://www.ucl.ac.uk/finance/research/rs-contacts.php by entering your department
Please report any queries concerning the student data shown on the profile page to:

Email: portico-services@ucl.ac.uk

Help Desk: http://www.ucl.ac.uk/ras/portico/helpdesk
Publication Detail
Plasmon-enhanced optical trapping of metal nanoparticles
  • Publication Type:
    Conference
  • Authors:
    Maragò OM, Jones PH, Saija R, Borghese F, Denti P, Iatì MA, Gucciardi PG
  • Publication date:
    01/01/2011
  • Published proceedings:
    Optics InfoBase Conference Papers
  • ISBN-13:
    9781557529091
  • Status:
    Published
Abstract
We investigate experimentally and theoretically plasmon-enhanced optical trapping of metal nanoparticles. We calculate the optical forces on gold, silver and aluminium nanospheres through a procedure based on the Maxwell stress tensor in the transition T-matrix formalism. We compare our calculations with experimental results finding excellent agreement. We identify regimes where force constants obey general scaling laws with particle size and laser detuning from the plasmon resonance frequency of spherical metal nanoparticles. We also demonstrate how light-driven rotations can be generated and detected in non-symmetric nanorods aggregates. Analyzing the motion correlations of the trapped nanostructures, we measure with high accuracy both the optical trapping parameters, and the rotation frequency induced by the radiation pressure. © 2011 OSA: BODA/NTM/OMP/OTA.
Publication data is maintained in RPS. Visit https://rps.ucl.ac.uk
 More search options
UCL Researchers
Author
Dept of Physics & Astronomy
University College London - Gower Street - London - WC1E 6BT Tel:+44 (0)20 7679 2000

© UCL 1999–2011

Search by