Affiliation:
1. Anhui University of Science and Technology
2. Zaozhuang University
Abstract
In this paper, a multifunctional terahertz (THz) absorber based on Dirac semimetal and vanadium dioxide (
V
O
2
) is proposed. By modulating the temperature of
V
O
2
, the absorber can be switched between the narrow band and wide band. When
V
O
2
is in the metallic state, the absorber has a broadband absorption effect with a bandwidth of approximately 4 THz. It has the advantages of insensitivity to polarization and wide-angle absorption. When
V
O
2
is in the insulating state, the absorber has two absorption peaks with absorptivity exceeding 90% and sensitivities of 297.7 and 402 GHz/RIU, and thus can be used as a highly sensitive sensor for cell detection. When the Fermi level of the Dirac semimetal is changed, the absorption characteristics can be modulated. The absorber has broad application prospects in multifunctional modulated devices.
Funder
Anhui University of Science and Technology
The Special Funding of the Taishan Scholar Project
Shandong Youth Entrepreneurship Team Science and Technology Planning Team
Natural Science Foundation of Shandong Province
National Key Research and Development Program of China
National Natural Science Foundation of China
Subject
Atomic and Molecular Physics, and Optics,Engineering (miscellaneous),Electrical and Electronic Engineering
Cited by
11 articles.
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