title: Polarization-independent dual-band perfect absorber utilizing multiple magnetic resonances.
abstract: We propose a dual-band metamaterial perfect absorber at microwave frequencies. Using a planar metamaterial, which consists of periodic metallic donut-shape meta-atoms at the front separated from the metallic plane at the back by a dielectric layer, we demonstrate the multi-plasmonic high-frequency perfect absorptions induced by the third-harmonic as well as the fundamental magnetic resonances. The origin of the induced multi-plasmonic perfect absorption was elucidated. It was also found that the perfect absorptions at dual peaks are persistent with varying polarization.
authors: Young Joon
authors: YJ
authors: Yoo
authors: Young Joo
authors: YJ
authors: Kim
authors: Pham
authors: P
authors: Van Tuong
authors: Joo Yull
authors: JY
authors: Rhee
authors: Ki Won
authors: KW
authors: Kim
authors: Won Ho
authors: WH
authors: Jang
authors: Y H
authors: YH
authors: Kim
authors: H
authors: H
authors: Cheong
authors: Youngpak
authors: Y
authors: Lee