The European Physical Journal Applied Physics
- The European Physical Journal Applied Physics / Volume 43 / Issue 02 / August 2008, pp 155-158
- © EDP Sciences, 2008
- Published online by Cambridge University Press: 31 January 2011
- DOI: http://dx.doi.org/10.1051/epjap:2008136 (About DOI)
Table of Contents - August 2008 - Volume 43, Issue 02 (Reliability in Electromagnetic Systems (IET))
Imaging, Microscopy and Spectroscopy
Full field imaging and spectroscopy of individual gold nanoparticles
E. Absila1, G. Tessiera1, D. Fourniera1, M. Grossa2 and M. Atlana2
ESPCI, LPEM de la Ville de Paris, CNRS UPR5, Université Pierre et Marie Curie, Paris 6, 10, rue Vauquelin, 75231 Paris Cedex 05, France
ENS, LKB, CNRS UMR 8552, Université Pierre et Marie Curie, Paris 6, 24, rue Lhomond, 75231 Paris Cedex 05, France
Abstract
Most applications involving metallic nanoparticle labelling necessitate both fast imaging and local spectroscopy of individual beads. We present an imaging method based on a guided laser illumination associated to spatial modulation which allows the detection of gold particles down to 10 nm. Using an imaging spectrometer and white incoherent illumination, the same system delivers individual spectroscopy of several gold beads simultaneously, allowing a fast and selective discrimination between individual metal particles and aggregates or dust.
(Received January 29 2008)
(Revised April 3 2008)
(Accepted April 30 2008)
(Online publication July 10 2008)
PACS:
- 78.67.Bf – Nanocrystals and nanoparticles;
- 78.90.+t – Other topics in optical properties, condensed matter spectroscopy and other interactions of particles and radiation with condensed matter
