Piezoelectric materials generate an electric charge when mechanically stressed. This phenomenon occurs in certain crystals, ceramics, and polymers, allowing them to convert mechanical energy into electrical energy and vice versa. Common applications include sensors, actuators, and energy harvesting devices. When pressure is applied to a piezoelectric material, its internal structure changes, creating an electrical potential. This property is utilized in various technologies, such as microphones, speakers, and ultrasonic devices. The ability to produce electricity from movement makes piezoelectric materials valuable in renewable energy solutions and advanced electronic systems.