Work

Impact of resonator geometry and its coupling with ground plane on ultrathin metamaterial perfect absorbers

Year: 2012

Type: article

Abstract: We investigate the impact of resonator geometry and its coupling with ground plane on the performance of metamaterial perfect absorbers. Using a cross-resonator as an example structure, we find that the absorber thickness can be further reduced through modifying the geometric dimensions of the resonators. Numerical simulations and theoretical calculations reveal that destructive interference of multiple reflections is responsible for the near-unity absorption. The near-field coupling between the resonator array and ground plane can be significant. When this coupling is taken into account, the theoretical results calculated using the interference model are in excellent agreement with experiments and numerical simulations.

Source: Applied Physics Letters

DOI: 10.1063/1.4749823

Authors: Li Huang, Dibakar Roy Chowdhury, Suchitra Ramani, Matthew T. Reiten, Sheng-Nian Luo, Abul K. Azad, Antoinette J. Taylor, Hou-Tong Chen

Institutions: Harbin Institute of Technology, Los Alamos National Laboratory, Center for Integrated Nanotechnologies

Language: English

Topic: Metamaterials and Metasurfaces Applications

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W1987347949

FWCI: 6.62

Cites: 22

Cited by: 209

Related to: 10