Abstract
A high-temperature sensor based on a metamaterial unit cell is proposed in this paper. The wireless passive temperature sensing method is based on the electromagnetic backscatter principle, and thus has the advantages of higher quality, lower environmental interference, and anti-low frequency interference. We developed a finite-element method-based model for the sensor via high-frequency simulation software (HFSS). A double split-ring resonator (SRR) with an outer ring length of 13 mm was designed on alumina ceramic substrate. The sensor was fabricated at 2.42 GHz using micromechanical technology and screen printing technology. When the temperature increased from 28 to 1100 °C, the resonant frequency decreased from 2.417 to 2.320 GHz with an average sensitivity of 95.63 kHz/°C. As the sensor is easily designed and fabricated, it can be used for chipless radio frequency identification (RFID) tags by simply changing the size of rings. Furthermore, emerging 3D printing technology and commercial desktop inkjet printers will be used to realize the rapid low-cost preparation of the sensor, enabling its wide range of applications in aerospace, military, manufacturing, transportation, and other fields.
Highlights
High-temperature sensing is in great demand in the aerospace and manufacturing industries.Real-time sensing and in situ temperature monitoring are critical in improving the working efficiency of devices and ensuring the safe operation of equipment
When the blade of a turbine engine runs at a high speed, an increase in the surface temperature causes the blade to deform [5,6]
We propose a novel approach for pushing the temperature limits of the devices by combining a metamaterial unit cell with high-temperature co-fired ceramic (HTCC) technology and chipless radio frequency identification (RFID) technology
Summary
High-temperature sensing is in great demand in the aerospace and manufacturing industries.Real-time sensing and in situ temperature monitoring are critical in improving the working efficiency of devices and ensuring the safe operation of equipment. High-temperature sensing is in great demand in the aerospace and manufacturing industries. The excessively high temperature of a furnace wall or pipe wall can lead to its deformation or bursting, which will reduce work efficiency and cause safety risks [1,2]. When the blade of a turbine engine runs at a high speed, an increase in the surface temperature causes the blade to deform [5,6]. The applications of high-temperature sensors that are stable and function in temperatures up to 1000 ◦ C are extensive. Such sensors are required to be small, easy to manufacture, inexpensive, and highly reliable
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