MXene-based ultra-thin film for terahertz radiation shielding

作者：Qiming Zou, Wenyu Guo, Long Zhang, Liting Yang, Zhenyu Zhao, Feng Liu, Xiang Ye, Yi Zhang, Wangzhou Shi · 发表于：Nanotechnology · 年份：2020 · DOI：10.1088/1361-6528/abb6a7 · 被引用次数：25 · 研究领域：Terahertz technology and applications、Metamaterials and Metasurfaces Applications、Topological Materials and Phenomena

Abstract We have successfully fabricated Ti-based MXenes flakes, Ti 3 C 2 T x , by chemical etching, then prepared it as an organic dispersion and finally spin-coated it on polyimide plastic substrate for terahertz wave shielding. The shielding effectivity of the 12 μ m ultra-thin film can reach up to 17 dB measured by the terahertz time-domain spectra. We can attribute the excellent phenomenon to the intrinsic absorption of triple-layered Ti 3 C 2 , due to the similar double-peak type refraction curves, which have been respectively observed from the experimental samples and the simulation ones. High conductivity and strong THz absorption indicate the Ti 3 C 2 T x MXene is the absorptive electromagnetic shielding material. Comparing with other kinds of THz shielding materials, the Ti-based MXenes might be a potential candidate for the next generation of ultra-thin and lightweight THz shielding.