Ultra-wideband, polarization-insensitive flexible metamaterial absorber base on laser printed graphene using equivalent circuit design method

Yize Li, Yixian Fang, Yihe Huang, Kewen Pan, Xiaoyu Xiao, Xuzhao Liu, Lin Li, Zhirun Hu

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, an ultra-wideband, angle and polarization-insensitive laser assisted graphene metamaterial absorber is presented. The design consists of double graphene resistive layers with the combination of three dielectric substrates. The graphene imbedded nano-magnetic material Fe3O4 has been synthesisedby laser direct writing technology, which demonstrates a high degree of uniformity with deviations less than 6% for different designed values of sheet resistance. Numerical simulation and analytical studies were carried out in order to analyze the absorption mechanism. The measured results confirm that the absorber operates from 1.32 to 17.9 GHz with over 90% absorptivity. The absorber achieves 173% fractional absorption bandwidth with a thickness of 0.068λL.
Original languageEnglish
Article number118166
JournalCarbon
Volume212
Early online date24 May 2023
DOIs
Publication statusPublished - 1 Aug 2023

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