![]() ![]() ![]() ![]() However, this can work the other way around. Therefore, when the stress is released from the material, the electrical charge stops. One of the main features of piezoelectricity is that it is reversible. The piezoelectric effect is the generation of an electrical charge under an applied stress. Piezoelectric materials work by using the principles of the piezoelectric effect. In addition to sensor applications, the other main application of piezoresistive materials is piezoresistive resistors. Designers also use piezoelectric materials as power transducers, actuators, conductive adhesives and sealants, high-voltage power sources, and piezoelectric motors. These sensors are crucial in construction-based applications to measure if parts of a structure are deforming from too much stress. When piezo materials classified as either piezoelectric or piezoresistive are subjected to a stress and/or strain, the electrical charge or the resistivity (respectively) changes.Īlthough piezoelectric materials serve a wider range of applications than piezoresistors, both types of piezo materials are extremely useful in sensor applications, namely stress/strain sensors that can measure if a material is becoming mechanically deformed under an applied load. An applied stress and/or pressure to piezo materials causes a deformation in the crystal structure, which invokes a change in the electrical current across the material. In piezo materials, induced changes in their crystal structures at the atomic level govern their function. As in many areas of electronics, chemistry is the fundamental driver for how piezo materials work. ![]()
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