title: On the dielectric function tuning of random metal-dielectric nanocomposites for metamaterial applications.
abstract: The potential of random metal-dielectric nanocomposites as constituent elements of metamaterial structures is explored. Classical effective medium theories indicate that these composites can provide a tunable negative dielectric function with small absorption losses. However, the tuning potential of real random composites is significantly lower than the one predicted by classical theories, due to the underestimation of the spectral range where topological resonances take place. This result suggests that a random mixture consisting of a metal matrix with embedded isolated dielectric inclusions is a promising design guideline for the fabrication of tunable composites for metamaterial purposes.
authors.affiliation: Ruđer Bosković Institute, Zagreb, Croatia. jsancho@irb.hr
authors.forename: Jordi
authors.initials: J
authors.lastname: Sancho-Parramon
authors.forename: Vesna
authors.initials: V
authors.lastname: Janicki
authors.forename: Hrvoje
authors.initials: H
authors.lastname: Zorc
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D008670:Metals / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry*; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation
chemical_list: D008670:Metals