Optimization and modulation of a multiband multimode metamaterial absorber and its application in healthy hotel indoor gas sensing

Abstract

Here, a multiple modes metamaterial absorber with four peaks was proposed and verified. All absorption peaks were excited by the multiple modes coupling between adjacent unit cells. By increasing the structural parameter D, absorption peaks were strengthened and shifteded to the low-frequency region. When the lattice constant P was increased, these peaks were decreased and shifteded to the high-frequency region. Similarly, when the dielectric layer thickness t₃ was gradually increased, these absorption peaks were weakened. Temperature was gradually increased, these absorption peaks were gradually reduced and shifteded to the high-frequency region. The multi-mode coupling effetct between unit cells was important to the performance of the metamaterial absorber.

KEYWORDS:

• Metamaterial
• metasurface
• healthy hotel
• absorbers

Acknowledgements

Authors’ contributions: Zhirong Li, Min Zhong, Liangyun Zang, Jiaqun Chen: Term, Conceptualization, Methodology, Software,Validation, Formal analysis, Investigation, Resources, Writing_review & editing, Visualization, Project administration.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This research was financially supported by the Young and Middle Teachers’ Basic Ability Improvement Project of Guangxi (No. KY2016YB453).