3D Printed Pressure Sensor Based on Surface Acoustic Wave Resonator
Abstract
This paper reports a 3-dimentional (3D) pressure sensor based on surface acoustic wave (SAW) resonators. The SAW resonators were designed and fabricated on 128°Y-X LiNbO3 substrate using the MEMS technology. The pressure sensing structure was 3D-printed using polyactic acid plastic, and two SAW resonators were integrated in the 3D-printed chamber structure for both temperature and pressure sensing. The SAW-based gas pressure sensors demonstrate a sensitivity of 589 ppm/MPa at the pressure range of 100-600 kPa and temperature of 40 °C.
© 2021 Baofa Hu, Zhiwei Li, Yuanjie Wan, Peng Zhou, Chunquan Zhang, Haisheng San, published by Slovak Academy of Sciences, Institute of Measurement Science
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