PREMS team is happy to announce that a recent article has been selected for the cover of Cover Nano Letters, highlighting their work on Plamsonic.
Title : Broadeningthe PlasmonicSpectral Range of MetallicMetasurfacesUsingDual-MaterialArray
M. Dewynter, A. Sraj, J. Loze, J. Béal, P. Cheng, K. Pandey, A. Chevillot-Biraud, N. Felidj, and A.-L. Baudrion
Abstract :
“Plasmonic nanoparticle arrays support localized and lattice resonances that confine light, enhance scattering, and produce narrow spectral features for sensing and light emission. While monometallic arrays are well studied, bimetallic systems remain largely unexplored. Here, we demonstrate checkerboard arrays of gold and aluminum nanoparticles that support broadband surface lattice modes via hybridization of their distinct plasmonic responses. Experiments and simulations show that gold and aluminum dipolar resonances couple through a shared Rayleigh anomaly in the near-infrared, extending aluminum’s plasmonic response far beyond its conventional range. This previously unreported coupling mechanism enables broadband, high-performance plasmonic arrays for advanced sensing and telecommunications.”