Open AccessTaming electromagnetic metamaterials for isotropic perfect absorbers
Author(s) -
Doan Tung Anh,
Do Thanh Viet,
Pham Thi Thu Trang,
Nguyễn Mạnh Thắng,
Ho Quang Quy,
Nguyễn Văn Hiếu,
Vũ Đình Lãm,
Nguyễn Thanh Tùng
Publication year - 2015
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.4926656
Subject(s) - metamaterial , isotropy , homogeneity (statistics) , resonator , split ring resonator , ground plane , dielectric , materials science , anisotropy , metamaterial absorber , finite element method , optics , physics , optoelectronics , computer science , tunable metamaterials , antenna (radio) , telecommunications , machine learning , thermodynamics
Conventional metamaterial absorbers, which consist of a dielectric spacer sandwiched between metamaterial resonators and a metallic ground plane, have been inherently anisotropic. In this paper, we present an alternative approach for isotropic perfect absorbers using symmetric metamaterial structures. We show that by systematically manipulating the electrically and magnetically induced losses, one can achieve a desired absorption without breaking the structural homogeneity. Finite integration simulations and standard retrieval method are performed to elaborate on our idea