Tunable selective plasmonic angle-large metamaterial absorber

Throughout this research we substantiate that a film, a specially built thin one, having a certain configuration, can deal with incoming electromagnetic-EM waves that “hits” the film, in a very discerning manner, within the range of ultraviolet- UV to far infrared. Configuration we built has on bottom a layer of a conducting material under a layer of a insulator having on top a pattern of “dots” of conducting material. Making adjustments regarding the dimensions, the materials of dots, we accomplished absorption resonances wavelength values of 0.35, 1.3, 12, 51microns. The specular spectra of the reflectivity is angle-conditioned evidenced by visible-toUV spectrometers[1]. The absorption highest values goes from 83% to98%. Applications for that kind of absorbers are represented by thermal detectors. There is a proportionality relation between surface structures linear dimension, the dielectric permittivity and the wavelength resonance. The dipolar plasma resonance image dipoles in the ground plane and the dipolar plasma resonance in the surface structures are coupled. Thus generates a circuit resonant LCR that describes the resonances of absorption[1].