title: Off-Resonant Optical Excitation of Gold Nanorods: Nanoscale Imprint of Polarization Surface Charge Distribution.
abstract: We report on the nanoscale optical characterization of gold nanorods irradiated out of their plasmonic resonance. Our approach is based on the reticulation of a photopolymerizable formulation locally triggered by enhanced electromagnetic fields. The tiny local field enhancement stems from the surface polarization charges associated with the electric field discontinuity at the metal/dielectric interface. This allows us to get a nanoscale signature of the spatial distribution of the surface charge density in metallic nanoparticles irradiated off-resonance.
authors: †Laboratoire de Nanotechnologie et d'Instrumentation Optique LNIO-ICD, Université de Technologie de Troyes, France.
authors: Claire
authors: C
authors: Deeb
authors: †Laboratoire de Nanotechnologie et d'Instrumentation Optique LNIO-ICD, Université de Technologie de Troyes, France.
authors: Xuan
authors: X
authors: Zhou
authors: †Laboratoire de Nanotechnologie et d'Instrumentation Optique LNIO-ICD, Université de Technologie de Troyes, France.
authors: Davy
authors: D
authors: Gérard
authors: ‡Laboratoire Interdisciplinaire Carnot de Bourgogne CNRS-UMR 5209, Université de Bourgogne, Dijon, France.
authors: Alexandre
authors: A
authors: Bouhelier
authors: §Miller Institute for Basic Research in Science and Department of Chemistry, University of California, Berkeley, California 94720, United States.
authors: Prashant K
authors: PK
authors: Jain
authors: †Laboratoire de Nanotechnologie et d'Instrumentation Optique LNIO-ICD, Université de Technologie de Troyes, France.
authors: Jérôme
authors: J
authors: Plain
authors: ⊥Institut de Science des Matériaux de Mulhouse IS2M-CNRS LCR 7228, Université de Haute-Alsace, Mulhouse, France.
authors: Olivier
authors: O
authors: Soppera
authors: †Laboratoire de Nanotechnologie et d'Instrumentation Optique LNIO-ICD, Université de Technologie de Troyes, France.
authors: Pascal
authors: P
authors: Royer
authors: †Laboratoire de Nanotechnologie et d'Instrumentation Optique LNIO-ICD, Université de Technologie de Troyes, France.
authors: Renaud
authors: R
authors: Bachelot
keywords: nanorods; optical properties of metal nanoparticles; plasmonics; polymer cross-linking; polymerization; surface charge density