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.

Founded in 1999, Hangzhou Freqcontrol Electronic Technology Ltd. is a China leading manufacturer of piezoelectric crystal wafers, substrates, components and single crystal growth. We, known as the "CQT Group" in global market, headquartered in Hangzhou, China, empowered by its manufacturing sites in Shanghai, Jiaxing and Deqin etc.

Our products are mainly used in RF Telecom, Semiconductor, Biotech, Optical engineering and frequency control industries. The monthly production capacity: 500K single quartz blanks (SC, AT, IT, FC, etc.), 20K quartz wafers (AT, ST, X, Z, etc.), 10K LiNbO3 wafers (3~8 inch), 10K glass wafers (Fused silica, Borofloat33, Corning, etc.), 8K LiTaO3 wafers (3~6 inch), and 100K filters/oscillators (VCXO, TCXO).

Our company vision is to be a reliable primary Microelectronic substrates supplier in today's world.

The CQT Group consists of five major plants with total floor area over 10,000 m². Our production machines include crystal growth furnace, wire saw, X-ray orientation, grinding machine, polishing machine, chamfering machine, CNC, REDOX chambers etc. Inspection equipment include Flatmaster 200, AOI, profilometer, optical imager, X-ray inspector etc. We are also equipped with Class 100 and 1000 clean rooms.

The CQT group is primarily known as the expert of hexagonal crystals, We master the manufacturing process of single & doubly rotated quartz blanks, and we can provide quartz of any orientation cut whether given by IRE , Miller index, Euler angle or conventional sign.

In addition to our leading quartz blank manufacturing capabilities, the last decade sees our major technological breakthroughs. We overcome the 3~6 inch ultra-thin wafer mass production barrier, obtained the reduction technology of black LiNbO3 & LiTaO3 wafers, and achieved 8 inch LiNbO3 wafer mass production successfully.

Competitive Advantages

1. Reliable partner: We are in this business for over 30 years, served over 200 customers in 20+ countries.
2. Complete production line: We do crystal orientation, wire cut, grinding, polishing, etching, flat/notch, surface inspecting, x-ray detecting etc. all in house!
3. State-of-the-art cleanroom: We have 3 Class1000 clean room, 1 Class100 work desk, complete wafer cleaning & drying process.
4. Efficient customer service: Prompt RFQ response & Order confirmation in 24 hrs, customization lead time in 4 weeks.