title: Trapping waves with terahertz metamaterial absorber based on isotropic Mie resonators.
abstract: Quasi-monodisperse dielectric particles organized in a periodic hexagonal network on an aluminum surface are exploited numerically and experimentally as a single-layered near-perfect absorber in the terahertz regime. Of particular interest are titanium dioxide (TiO(2)) microspheres because of their large dielectric permittivity and isotropic shape leading to Mie resonances with insensitive polarization. Absorption higher than 80% at normal incidence covering two distinct ranges of frequencies is demonstrated experimentally. Furthermore, the performance of the metamaterial absorber is kept over a wide range of incident angles.
authors.forename: Riad
authors.initials: R
authors.lastname: Yahiaoui
authors.forename: Kenichiro
authors.initials: K
authors.lastname: Hanai
authors.forename: Keisuke
authors.initials: K
authors.lastname: Takano
authors.forename: Tsubasa
authors.initials: T
authors.lastname: Nishida
authors.forename: Fumiaki
authors.initials: F
authors.lastname: Miyamaru
authors.forename: Makoto
authors.initials: M
authors.lastname: Nakajima
authors.forename: Masanori
authors.initials: M
authors.lastname: Hangyo