Electromagnetic Interactions in Plasmonic Nanoparticle Arrays

Abstract : Single two-dimensional planar silver arrays and one-dimensional linear gold chains of nanoparticles were investigated by dark-field surface plasmon spectroscopy and studied as a function of interparticle distance, particle size, and number of particles. In agreement with recent theoretical predictions, a red shift of the surface plasmon resonance occurring in two-dimensional arrays was found for lattice spacings below 200 nm. This red shift is associated with a significant broadening of the resonance and is attributed to the onset of near-field interactions. We found that the relative contributions of the long-range and short-range interactions in two-dimensional arrays of particles are fundamentally different to those occurring in individual linear chains.
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Submitted on : Wednesday, October 9, 2019 - 4:48:25 PM
Last modification on : Thursday, October 10, 2019 - 1:32:58 AM

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Alexandre Bouhelier, Renaud Bachelot, Jin Seo Im, Gary Wiederrecht, Gilles Lerondel, et al.. Electromagnetic Interactions in Plasmonic Nanoparticle Arrays. Journal of Physical Chemistry B, American Chemical Society, 2005, 109 (8), pp.3195-3198. ⟨10.1021/jp046224b⟩. ⟨hal-02309933⟩

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