title: Monodisperse silicon nanocavities and photonic crystals with magnetic response in the optical region.
abstract: It is generally accepted that the magnetic component of light has a minor role in the light-matter interaction. The recent discovery of metamaterials has broken this traditional understanding, as both the electric and the magnetic field are key ingredients in metamaterials. The top-down technology used so far employs noble metals with large intrinsic losses. Here we report on a bottom-up approach for processing metamaterials based on suspensions of monodisperse full dielectric silicon nanocavities with a large magnetic response in the near-infrared region. Experimental results and theory show that silicon-colloid-based liquid suspensions and photonic crystals made of two-dimensional arrays of particles have strong magnetic response in the near-infrared region with small optical losses. Our findings might have important implications in the bottom-up processing of large-area low-loss metamaterials working in the near-infrared region.
authors.affiliation: Centro de Tecnologias Fisicas, Unidad Asociada ICMM/CSIC-UPV, Universidad Politecnica de Valencia, Av. Los Naranjos s/n, Valencia 46022, Spain.
authors.forename: Lei
authors.initials: L
authors.lastname: Shi
authors.forename: Justin T
authors.initials: JT
authors.lastname: Harris
authors.forename: Roberto
authors.initials: R
authors.lastname: Fenollosa
authors.forename: Isabelle
authors.initials: I
authors.lastname: Rodriguez
authors.forename: Xiaotang
authors.initials: X
authors.lastname: Lu
authors.forename: Brian A
authors.initials: BA
authors.lastname: Korgel
authors.forename: Francisco
authors.initials: F
authors.lastname: Meseguer