3D Printed Pressure Sensor Based on Surface Acoustic Wave Resonator
DOI:
https://doi.org/10.2478/msr-2021-0011Keywords:
surface acoustic wave, 3D printing, gas pressure sensor, LiNbO3Abstract
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.
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