Double-negative polarization-independent fishnet metamaterial in the visible spectrum.
We show that a second-order magnetic resonance present in the fishnet metamaterial can be enhanced so as to achieve simultaneous negative permittivity and permeability in the visible range. The double-negative behavior leads to reduced losses in this particular fishnet metamaterial. We also study the stacking of several functional layers, verifying the convergence of the refractive index.
García-Meca
C
C
Valencia Nanophotonics Technology Center, Universidad Politécnica de Valencia, 46022 Valencia, Spain. cargarm2@ntc.upv.es
Ortuño
R
R
Rodríguez-Fortuño
F J
FJ
Martí
J
J
Martínez
A
A