Zhuang Shulei, Li Xinyu, Yang Tong, Sun Lu, Kosareva Olga, Gong Cheng, Liu Weiwei
Institute of Modern Optics, Nankai University, Tianjin Key Laboratory of Micro-Scale Optical Information Science and Technology, Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Tianjin 300350, China.
Faculty of Physics, Lomonosov Moscow State University, Leninskie Gory, 119991 Moscow, Russia.
Micromachines (Basel). 2022 Aug 1;13(8):1239. doi: 10.3390/mi13081239.
The paper reports an absorption-transmission multifunctional tunable metamaterial based on graphene. Its pattern graphene layer can achieve broadband absorption, while the frequency selective layer can achieve the transmission of specific band. Furthermore, the absorption and transmission can be controlled by applying voltage to regulate the chemical potential of graphene. The analysis results show that the absorption of the metamaterial is adjustable from 22% to 99% in the 0.72 THz~1.26 THz band and the transmittance is adjustable from 80% to 95% in 2.35 THz. The metamaterial uses UV glue as the dielectric layer and PET (polyethylene terephthalate) as the flexible substrate, which has good flexibility. Moreover, the metamaterial is insensitive to incident angle and polarization angle, which is beneficial to achieve excellent conformal properties.
该论文报道了一种基于石墨烯的吸收-透射多功能可调超材料。其图案化石墨烯层可实现宽带吸收，而频率选择层可实现特定频段的透射。此外，通过施加电压调节石墨烯的化学势可控制吸收和透射。分析结果表明，该超材料在0.72太赫兹至1.26太赫兹频段的吸收率可在22%至99%之间调节，在2.35太赫兹时的透射率可在80%至95%之间调节。该超材料使用紫外胶作为介电层，以聚对苯二甲酸乙二酯（PET）作为柔性衬底，具有良好的柔韧性。此外，该超材料对入射角和偏振角不敏感，有利于实现优异的共形特性。
