TSMR Thickness Shear Mode Resonator Sensor With Crystalline Quartz Plate

A quartz pressure sensor for downhole oilfield applications consists of a quartz piezoelectric resonator hermetically sealed between two quartz end caps. The resonatorand endcaps are made of quartz which is AT cut. An AT cut is preferred because it has the smallest temperature response compared to other available cuts. The quartz resonator is AT cut biconvex thickness shear mode. BonTek is capable of fabricating with high quality both the end caps and the quartz resonators.

Squeezing on a diameter of a TSMR disc aligned along the crystallographic direction causes an AT-cut resonator to increase in frequency, while a BT-cut resonator decreases in frequency. These frequency shifts, due to a static stress bias, occur due to nonlinear effects acting through the third-order elastic stiffness coefficients. The stress pattern in the center of the resonator disc is compressive along the axis of force application and tensile orthogonal to the axis of force application.

FAQs:

1. Q: What are the products you mainly work on?

A: We look at ourselves as the piezo wafer specialist. We are the very first to work with Single Crystal Quartz in China about 30 years ago. Then gradually we step in the field of LiNbO3, LiTaO3, Quartz glass, LGS, CTGS etc. Especially, if you are looking for a piezo quartz supplier, we are the ultimate choice! We export millions of quartz blanks each year because we master the AT, SC and IT cuts with superior angle precision.

2. Q: Can you accept product customization?

A: Yes, of course. We can fabricate as per your request. In addition, we are so experienced with piezo wafers that we can provide you relevant suggestions if you are not 100% sure about your choice. Besides, we do have some standard wafers in stock, please check with us.