title: A new dielectric metamaterial building block with a strong magnetic response in the sub-1.5-micrometer region: silicon colloid nanocavities.
abstract: A new dielectric metamaterial building block based on high refractive index silicon spherical nanocavities with Mie resonances appearing in the near infrared optical region is prepared and characterized. It is demonstrated both experimentally and theoretically that a single silicon nanocavity supports well-defined and robust magnetic resonances, even in a liquid medium environment, at wavelength values up to six times larger than the cavity radius.
authors.affiliation: Centro de Tecnologias Fisicas, Unidad Asociada ICMM/CSIC-UPV, Universidad Politecnica de Valencia, Av. Los Naranjos s/n, Valencia, 46022, Spain Instituto de Ciencia de Materiales de Madrid CSIC, Madrid, 28049, Spain. shilei@upv.es
authors.forename: Lei
authors.initials: L
authors.lastname: Shi
authors.forename: T Umut
authors.initials: TU
authors.lastname: Tuzer
authors.forename: Roberto
authors.initials: R
authors.lastname: Fenollosa
authors.forename: Francisco
authors.initials: F
authors.lastname: Meseguer
mesh_terms: D003102:Colloids / Q000737:chemistry*; D017097:Electric Impedance; D060526:Magnetic Fields; D008420:Manufactured Materials / Q000032:analysis*; D008422:Materials Testing; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure*; D012031:Refractometry; D012542:Scattering, Radiation; D012825:Silicon / Q000737:chemistry*
chemical_list: D003102:Colloids; D012825:Silicon