Single Synthetic Crystal Quartz SiO2 is grown by hydrothermal method inautoclaves. It has trigonal crystal structure with right-handed or left-handedmodification. Quartz crystals have low stress birefringence and high refractiveindex homogeneity. The optical transmission range of crystal quartz is0.2-2.5microns. Due to its piezoelectric properties, low thermal expansion, good mechanical parameters and excellent optical characteristics, crystalquartz is widely used in electronics, precision and laser optics, fibercommunications, X-ray optics, pressure sensors and etc. Single crystal quartz wafer is an excellentsubstrate for microwave filters for wireless communication industries. We canprovide high quality quartz wafers for both research and industries productionat the lowest price. Quartz crystal is an important electronicmaterial. A quartz chip cut in a certain direction will produce an electricfield or charge proportional to the stress when subjected to mechanical stress, a phenomenon known as the positive piezoelectric effect. Conversely, when aquartz wafer is subjected to an electric field, it will generate a strainproportional to the electric field, which is known as the inverse piezoelectriceffect. Positive and inverse effects are called piezoelectric effects. Quartzcrystal not only has the piezoelectric effect, but also has the fine mechanicalcharacteristic, the electrical characteristic and the temperaturecharacteristic. The resonators, oscillators and filters designed,
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