Controlling the plasmon resonance of single metal nanoparticles by near-field anisotropic nanoscale photopolymerization

Hicham Ibn El Ahrach (1) , Renaud Bachelot (1) , Gilles Lerondel (1) , Alexandre Vial (1) , Anne-Sophie Grimault (1) , Jerome Plain (1) , Pascal Royer (1) , Olivier Soppera (2)

1 LNIO - Laboratoire de Nanotechnologie et d'Instrumentation Optique
2 DPG - Département de Photochimie Générale

We propose a new approach for tuning the Surface Plasmon (SP) resonance wavelength using hybrid nanoparticles. Our approach is based on nanoscale photopolymerization around metal nanoparticles. The enhanced optical near‐field of silver nanoparticles triggers local photopolymerization. As a result, atomic force microscopy reveals two nanoscale polymerized lobes around nanoparticles, with a controlled effective index distribution. A spectral breaking degeneracy of surface plasmon resonance of the nanoparticles has been demonstrated by polarized extinction spectroscopy.

Domaines: Matériaux; Polymères

Hicham Ibn El Ahrach, Renaud Bachelot, Gilles Lerondel, Alexandre Vial, Anne-Sophie Grimault, et al.. Controlling the plasmon resonance of single metal nanoparticles by near-field anisotropic nanoscale photopolymerization. Journal of Microscopy, 2008, 229 (3), pp.421-427. ⟨hal-00323560⟩