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A Fluidically Tunable Metasurface Absorber for Flexible Large-Scale Wireless Ethanol Sensor Applications

机译:用于柔性大规模无线乙醇传感器应用的流体可调超表面吸收器

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摘要

In this paper, a novel flexible tunable metasurface absorber is proposed for large-scale remote ethanol sensor applications. The proposed metasurface absorber consists of periodic split-ring-cross resonators (SRCRs) and microfluidic channels. The SRCR patterns are inkjet-printed on paper using silver nanoparticle inks. The microfluidic channels are laser-etched on polydimethylsiloxane (PDMS) material. The proposed absorber can detect changes in the effective permittivity for different liquids. Therefore, the absorber can be used for a remote chemical sensor by detecting changes in the resonant frequencies. The performance of the proposed absorber is demonstrated with full-wave simulation and measurement results. The experimental results show the resonant frequency increases from 8.9 GHz to 10.04 GHz when the concentration of ethanol is changed from 0% to 100%. In addition, the proposed absorber shows linear frequency shift from 20% to 80% of the different concentrations of ethanol.
机译:在本文中,提出了一种新型的柔性可调超表面吸收器,用于大规模远程乙醇传感器应用。拟议的超表面吸收器由周期性的开口环交叉谐振器(SRCR)和微流体通道组成。 SRCR模式是使用银纳米粒子墨水喷墨打印在纸上的。微流体通道在聚二甲基硅氧烷(PDMS)材料上进行激光蚀刻。提出的吸收器可以检测不同液体的有效介电常数的变化。因此,通过检测共振频率的变化,该吸收器可以用于远程化学传感器。通过全波仿真和测量结果证明了所提出的吸收器的性能。实验结果表明,当乙醇浓度从0%变为100%时,谐振频率从8.9 GHz增加到10.04 GHz。另外,提出的吸收器显示出从不同浓度的乙醇的20%到80%的线性频移。

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