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HANMO DU1, XIN ZHANG1, JIA LIU1, HONGYAN MENG1,2, SHUANG YANG1, YACHEN GAO1,*
A terahertz (THz) metasurface absorber using double-layer graphene achieves broadband absorption with over 90% absorptance in 5.02–9.13 THz, offering a 4.11 THz bandwidth. Finite-difference time-domain (FDTD) simulations reveal that the combined effects of disk- and square-shaped graphene enable modulation of absorptance at low and high frequencies by adjusting the Fermi energy ( ), achieving absorption intensity from 11% to 100%. The absorber maintains broadband performance under varying SiO2 thickness, azimuthal angles, and incident angles, ensuring robustness and tunability.
Tunable, Terahertz, Graphene, Broadband absorption.
HANMO DU, XIN ZHANG, JIA LIU, HONGYAN MENG, SHUANG YANG, YACHEN GAO, Broadband terahertz absorber with various tunable functions based on double-layer graphene, Optoelectronics and Advanced Materials - Rapid Communications, 19, 5-6, May-June 2025, pp.235-244 (2025).
Submitted at: Dec. 13, 2024
Accepted at: June 3, 2025
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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