Background of Piezoelectric Sensors

  • Gautschi G
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Abstract

Piezoelectricity is understood as a linear electromechanical interaction between the mechanical and the electrical state in crystals without a center of symmetry. The direct piezoelectric effect is present when a mechanical deformation of the piezoelectric material produces a proportional change in the electric polarization of that material, i.e. electric charge appears on certain opposite faces of the piezoelectric material when it is mechanically loaded. The converse piezoelectric effect means that mechanical stress proportional to an acting external electric field is induced in the piezoelectric material, i.e. the material is deformed when an electric voltage is applied.

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Gautschi, G. (2002). Background of Piezoelectric Sensors. In Piezoelectric Sensorics (pp. 5–11). Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-662-04732-3_2

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