Dong Lin, Si Liming, Xu Haoyang, Shen Qitao, Lv Xin, Zhuang Yaqiang, Zhang Qingle
Opt Express. 2022 Feb 28;30(5):8303-8316. doi: 10.1364/OE.452694.
In this paper, a conformal optical transparent metamaterial absorber (COTMA) is proposed based on the circuit analog optimization method (CAOM), which can effectively enhance the optimization speed in the metamaterial absorber structure design by quantifying the equivalent circuit parameters. The operating frequency band can be customized at any band through CAOM, such as microwave, terahertz, and near-infrared frequencies. Here, a five-square-patch structure absorber with transparency and flexible properties is achieved. The simulated and measured incident electromagnetic (EM) wave absorptions of COTMA can reach above 90% in 15.77 - 38.69 GHz band. Meanwhile, COTMA exhibits excellent conformal EM absorption, a thinner substrate (0.078 wavelength at 15.77 GHz), lower structure complexity and polarization independence, and it can also be adapted to the EM absorption of different curved screens. This design is expected to have potential applications for wearable electronics, curved surface screens and OLED displays.
本文基于电路模拟优化方法（CAOM）提出了一种共形光学透明超材料吸波器（COTMA），通过量化等效电路参数，可有效提高超材料吸波器结构设计中的优化速度。通过CAOM可在任何频段定制工作频段，如微波、太赫兹和近红外频率。在此，实现了一种具有透明性和柔性特性的五方贴片结构吸波器。COTMA的模拟和实测入射电磁波吸收率在15.77 - 38.69 GHz频段可达到90%以上。同时，COTMA表现出优异的共形电磁吸收、更薄的基板（在15.77 GHz时为0.078波长）、更低的结构复杂度和偏振无关性，并且还可适应不同曲面屏幕的电磁吸收。该设计有望在可穿戴电子设备、曲面屏幕和OLED显示器方面具有潜在应用。
