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The acoustic wave (AW) sensors can response to a physical, chemical, or biological stimulus in a sensitive and real-time manner, so they have drawn increasing attraction in recent years. Among the AW sensors, the piezoelectric ones show a lot of extraordinary merits such as high resolution, wide frequency and temperature ranges, high stability, low power consumption, and low cost, and they are able...
In this paper, the elastic, piezoelectric, and dielectric constants of Ca3TaGa3Si2O14 (CTGS) single crystals were fully characterized from room temperature to 800°C according to IEEE standard methods. The sensitivity and stability of the temperature sensors based on CTGS crystals were also investigated. One of the elastic stiffness constants-c11E shows the highest temperature sensitivity. The results...
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...
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