Piezoelectric ceramics are very familiar to us. It is a kind of information functional ceramic material that can convert mechanical energy and electrical energy. In addition to piezoelectricity, piezoelectric ceramics also have dielectric properties, elasticity, etc. It is widely used in medical imaging, acoustic sensors, acoustic transducers, ultrasonic motors, etc.

In addition to being used in high-tech fields, piezoelectric ceramics are also widely used in daily life. For example, there are many friends who smoke around us. Under normal circumstances, we will put a lighter in our pocket. Most of the lighters in common use are ignited by piezoelectric ceramics through a tip discharge.

When we press the ignition button, the spring will push a heavy hammer to hit the piezoelectric ceramic column, generating a high-voltage spark of thousands of volts, and ignite the combustible gas.

Application of piezoelectric ceramics

Piezoelectric ceramics are widely used. Generally speaking, it can be divided into frequency control, transduction sensing and optoelectronic devices.