What Is a Piezoelectric Sensor?

Piezoelectric sensors are sensors that make use of the piezoelectric effect produced by some dielectric forces. The so-called piezoelectric effect refers to the phenomenon that when a dielectric material undergoes deformation (including bending and expansion deformation) under the action of a certain direction, due to the internal charge polarization phenomenon, a charge will be generated on its surface. Piezoelectric materials can be divided into piezoelectric single crystal, piezoelectric polycrystalline and organic piezoelectric materials. The most commonly used piezoelectric sensors are the various types of piezoelectric ceramics and quartz crystals in piezoelectric single crystals. Other piezoelectric single crystals include lithium niobate, lithium tantalate, lithium gallate, and bismuth germanate, which are suitable for high-temperature radiation environments.