电阻式触摸屏
超材料
材料科学
光电子学
氧化铟锡
宽带
超材料吸收剂
光学
吸收(声学)
等效电路
横截面
不透明度
极化(电化学)
薄膜
物理
可调谐超材料
化学
电压
纳米技术
电气工程
物理化学
复合材料
结构工程
工程类
量子力学
作者
Harsh Sheokand,Saptarshi Ghosh,Gaganpreet Singh,Mondeep Saikia,Kumar Vaibhav Srivastava,J. Ramkumar,S. Anantha Ramakrishna
摘要
In this paper, an optically transparent metamaterial with broadband absorption is presented theoretically and demonstrated experimentally. The design comprises of structures made of resistive films of indium-tin-oxide and the metamaterial exhibits over 10 dB absorption in the frequency range of 6.06–14.66 GHz. The novelty of the structure lies in its large absorption bandwidth along with a reduced thickness and optical transparency compared to broadband absorbers reported earlier. Besides, the proposed design is polarization-insensitive and gives rise to angular independent absorption for both transverse electric and transverse magnetic polarizations. The absorption mechanism in the structure has been studied by deriving an equivalent circuit model as well as analyzing several design parameters. Finally, a prototype of the proposed structure has been fabricated and measured, which shows good agreement with the simulated results.
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