用于检测三乙胺的 Full-LIG 无线无电池柔性传感器

Alessio Mostaccio;Gianni Antonelli;Rosamaria Capuano;Corrado Di Natale;Eugenio Martinelli;Gaetano Marrocco
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引用次数: 0

摘要

低成本检测和定量测量挥发性化合物对于保持大批量食品的质量和完整性至关重要。激光诱导石墨烯(LIG)无需额外的导体,就能制造出兼容包装的无线传感和无电池设备。在这里,所提出的设备是一个灵活、完全集成的 868-MHz 天线和数字间电容器,通过可变的激光参数,同时最大限度地提高辐射性能和倾卸传感设备上的射频感应电流。我们深入研究了两个器件之间的几何集成,以减少妨碍测量稳定性和准确性的寄生电容。由此产生的装置只有信用卡大小,可通过标准超高频射频识别(RFID)协议在 1.6 米范围内读取。通过在电容器上涂覆适合与三乙胺化合物发生反应的化学交互材料(CIM)(PEGDA),对传感能力进行了测试。应用标准的机器学习技术,可以在受控环境中识别不同浓度(从10%到45%)的胺,识别率为$\mathbf {RMSE}\approxeq 5$和$R^{2} =0.8$。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Full-LIG Wireless Batteryless Flexible Sensor for the Detection of Triethylamine
Low-cost detection and quantitative measurement of volatile compounds are crucial in preserving the quality and integrity of food in mass volumes. A packaging-compatible wireless sensing and batteryless device can be entirely done of laser-induced graphene (LIG) which does not require additional conductors. Here, the proposed device is a flexible and fully integrated 868-MHz antenna and interdigital capacitor made by variable lasing parameters to simultaneously maximize the radiation performance and dump the RF-induced currents on the sensing device. The geometrical integration among the two devices is deeply investigated to reduce the parasitic capacitances that hinder the stability and accuracy of the measurement. The resulting device has the size of a credit card and can be read from up to 1.6 m through a standard UHF radio frequency identification (RFID) protocol. The sensing capabilities are tested by coating the capacitor with a chemical interactive material (CIM) (PEGDA) suitable to react to triethylamine compounds. Application of standard machine learning techniques permits to identify different concentrations (from 10% to 45%) of amine in a controlled environment with an $\mathbf {RMSE}\approxeq 5$ and $R^{2} =0.8$ .
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