Working Mechanism and Progress of Electromagnetic Metamaterial Perfect Absorber

Electromagnetic metamaterials are artificial subwavelength composites with periodic structures, which can interact strongly with the incident light to achieve effective control of the light field. Metamaterial absorbers can achieve nearly 100% perfect absorption of incident light at a specific frequ...

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Bibliographic Details
Published inPhotonics Vol. 10; no. 2; p. 205
Main Authors Liu, Xiajun, Xia, Feng, Wang, Mei, Liang, Jian, Yun, Maojin
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.02.2023
Subjects
Absorbers
Absorbers (materials)
Absorption
Broadband
coherent absorption
electromagnetic metamaterials
Electromagnetism
Impedance matching
Incident light
Light
Metamaterials
narrow band absorbers
Narrowband
Network switches
Optical properties
Optics
perfect absorption
Periodic structures
Permeability
Switches
terahertz
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Summary:Electromagnetic metamaterials are artificial subwavelength composites with periodic structures, which can interact strongly with the incident light to achieve effective control of the light field. Metamaterial absorbers can achieve nearly 100% perfect absorption of incident light at a specific frequency, so they are widely used in sensors, optical switches, communication, and other fields. Based on the development history of metamaterials, this paper discusses the research background and significance of metamaterial perfect absorbers. Some perfect absorption mechanisms, such as impedance matching and coherent perfect absorption, are discussed. According to the functional division, the narrowband, dual frequency, multi-frequency, broadband, and tunable metamaterial perfect absorbers are briefly described.
ISSN:2304-6732
2304-6732
DOI:10.3390/photonics10020205