PREMS team is happy to announce that a recent article has been selected for the cover of The Journal of Physical Chemistry Letters, highlighting their work on Plamsonic.
Title : Engineering Plasmonic Surface Lattice Resonances via a Nanoparticle Filling Factor
Kartikey Pandey, Lynda Dehbi, Macilia Braïk, Abderrahmane Belkhir, Sarra Gam-Derouich, Claire Mangeney, Abdelaziz Mezeghrane, and Nordin Félidj
Abstract :
Dielectric photonic crystals exhibit scale-invariant band structures, enabling similar operation across size regimes. Although metallic nanoparticle arrays are generally dispersive, surface lattice resonances (SLRs) in the coherent coupling regime show analogous behavior. Using experiments and FDTD simulations, we demonstrate that the SLR wavelength is governed by the filling factor. Distinct 2D nanoparticle arrays with identical filling factors and lattice periods along the Rayleigh-anomaly direction support SLRs at the same wavelength. This geometrical rule enables rational design of plasmonic substrates for sensing, photocatalysis, and surface-enhanced spectroscopies.