基于类汞电磁诱导透明液体超材料单元的高优值温度传感

High-FOM Temperature Sensing Based on Hg-EIT-Like Liquid Metamaterial Unit.

作者信息

Li Jian, Zhou Yuedan, Peng Fengwei, Chen Dexu, Xian Chengwei, Kuang Pengjun, Ma Liang, Wei Xueming, Huang Yongjun, Wen Guangjun

机构信息

School of Information and Communication Engineering, Sichuan Provincial Engineering Research Center of Communication Technology for Intelligent IoT, University of Electronic Science and Technology of China, Chengdu 611731, China.

Guangxi Key Laboratory of Wireless Wideband Communication and Signal Processing, Guilin University of Electronic Technology, Guilin 541004, China.

出版信息

Nanomaterials (Basel). 2022 Apr 19;12(9):1395. doi: 10.3390/nano12091395.

DOI:10.3390/nano12091395

PMID:35564104

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9103140/

Abstract

High-performance temperature sensing is a key technique in modern Internet of Things. However, it is hard to attain a high precision while achieving a compact size for wireless sensing. Recently, metamaterials have been proposed to design a microwave, wireless temperature sensor, but precision is still an unsolved problem. By combining the high-quality factor (Q-factor) feature of a EIT-like metamaterial unit and the large temperature-sensing sensitivity performance of liquid metals, this paper designs and experimentally investigates an Hg-EIT-like metamaterial unit block for high figure-of-merit (FOM) temperature-sensing applications. A measured FOM of about 0.68 is realized, which is larger than most of the reported metamaterial-inspired temperature sensors.

摘要

高性能温度传感是现代物联网中的一项关键技术。然而，在实现无线传感的紧凑尺寸的同时，很难获得高精度。最近，超材料已被用于设计微波无线温度传感器，但精度仍是一个未解决的问题。通过结合类电磁诱导透明（EIT）超材料单元的高品质因数（Q因子）特性和液态金属的高温度传感灵敏度性能，本文设计并通过实验研究了一种用于高优值（FOM）温度传感应用的类汞-EIT超材料单元块。实现了约0.68的实测优值，这比大多数已报道的受超材料启发的温度传感器都要大。