Dual-band metamaterial absorbers at terahertz frequency based on gold/parylene-C/silicide structure

Author

Yongzheng Wen ; Wei Ma ; Bailey, James ; Matmon, Guy ; Xiaomei Yu ; Aeppli, Gabriel

Author_Institution

Nat. Key Lab. of Sci. & Technol. on Micro/Nano Fabrication, Peking Univ., Beijing, China

fYear

2013

fDate

5-8 Nov. 2013

Firstpage

1191

Lastpage

1193

Abstract

We design, fabricate and characterize dual-band terahertz (THz) metamaterial absorbers with high absorption based on a structures consisting of a cobalt silicide (Co-Si) ground plane, a parylene-C dielectric spacer and a metal top layer. By combining two periodic metal resonators that couple separately within a single unit cell, a polarization-independent absorber with two distinct absorption peaks was obtained. By varying the thickness of the dielectric layer, we obtain absorptivity of 0.76 at 0.76THz and 0.97 at 2.30THz, which indicates the Co-Si ground plane absorbers present good performance.

Keywords

carbon; cobalt compounds; dielectric materials; gold; metamaterials; resonators; terahertz metamaterials; Au-C-Si; CoSi; cobalt silicide ground plane; dielectric layer; dual-band terahertz metamaterial absorbers; gold-parylene-C-silicide structure; ground plane absorbers; metal top layer; parylene-C dielectric spacer; periodic metal resonators; polarization-independent absorber; single unit cell; terahertz frequency; Absorption; Dielectrics; Dual band; Films; Metals; Metamaterials; Resonant frequency; Absorber; cobalt silicide; metamaterials; parylene-C; terahertz;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings (APMC), 2013 Asia-Pacific

Conference_Location

Seoul

Type

conf

DOI

10.1109/APMC.2013.6695067

Filename

6695067