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In this paper, a surface acoustic wave (SAW) mass sensors based on Lithium Niobate (LN) was tested through thermogravimetric analysis (TGA) process up to 450°C. The SAW sensor exhibited good stability and the resonant frequencies decreased linearly with the increase of temperature (the rate was about 5.3 KHz/°C) up to 500°C. PMMA A4 and C9 were deposited as the mass loadings during the TGA process...
A novel surface acoustic wave flow sensor is studied in this paper. ST-X cut quartz SAW delay line device is chosen for its ultra-high temperature stability. Test chamber is designed and built using acrylic plate and the SAW device is mounted on the chamber wall. Test Results show that SAW flow sensor has a linear relationship between the passing flow rate and system phase delay. The system has a...
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