Cheng Chin-Hsiang, Chen Yi-Shen, Tsai Hsin-Yu, Liang Yu-Ling, Lin David T W, Chen Yitung
Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan City 70101, Taiwan.
Institute of Mechatronic System Engineering, National University of Tainan, Tainan City 700301, Taiwan.
Materials (Basel). 2022 Jun 10;15(12):4133. doi: 10.3390/ma15124133.
The present study is intended to develop and test a cost-effective and efficient printing method for fabricating flexible metamaterial film with high electromagnetic wave absorptivity. The film can be easily applied to the surfaces with curved aspects. Firstly, numerical parametric study of the absorption characteristics of the film is performed for the range of frequency varying from 2.0 to 9.0 GHz based on commercial software package. Secondly, the flexible metamaterial films are fabricated, and experiments are conducted. The flexible metamaterial film consists of a flexible dielectric film made of polyimide (PI) and an array of split-ring resonators. The split-ring resonators of different geometric dimensions are fabricated on the PI film surface by using a silver nanoparticles ink jet printer. The performance of the flexible structure is then measured and dependence of operation frequency with higher absorptivity on the dimensions of the split-ring resonators is investigated. A comparison between the numerical and experimental data shows that the numerical predictions of the operation frequency with higher absorptivity closely agree with the experimental data.
本研究旨在开发并测试一种经济高效的印刷方法,用于制造具有高电磁波吸收率的柔性超材料薄膜。该薄膜可轻松应用于具有曲面的表面。首先,基于商业软件包,对频率范围为2.0至9.0 GHz的薄膜吸收特性进行数值参数研究。其次,制造柔性超材料薄膜并进行实验。柔性超材料薄膜由聚酰亚胺(PI)制成的柔性介电薄膜和一系列裂环谐振器组成。通过使用银纳米颗粒喷墨打印机在PI薄膜表面制造不同几何尺寸的裂环谐振器。然后测量柔性结构的性能,并研究具有较高吸收率的工作频率与裂环谐振器尺寸之间的关系。数值数据与实验数据的比较表明,具有较高吸收率的工作频率的数值预测与实验数据密切吻合。