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Composite Metamaterials for THz Perfect Absorption
Author(s) -
Wang Yue,
Cui Zijian,
Zhu Dongying,
Yue Lisha
Publication year - 2019
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201970025
Subject(s) - metamaterial , absorption (acoustics) , terahertz radiation , composite number , materials science , interference (communication) , absorption band , transmission line , optoelectronics , metamaterial absorber , tunable metamaterials , optics , physics , telecommunications , computer science , composite material , channel (broadcasting)
Metamaterials By combining the three kinds of structures (rectangles, rings and cross structures) into one unit, a triple‐band THz absorber is successfully demonstrated. Three absorption peaks are observed at 0.537, 0.948, and 1.59 THz with the respective absorption of 95.7, 98.8, and 96%. The physical mechanism of the perfect absorption is elucidated by the interference theory combining with transmission line model. It is found that each structures produce perfect absorption with the same mechanism, but with different absorption frequencies, which has an important application in multi‐band THz absorption devices and thus provides guidance for the design of multi‐band composite metamaterials absorbers. More details can be found in article number 1800940 by Yue Wang, Zijian Cui, Dongying Zhu, and Lisha Yue.