A material capable of transducing mechanical output to electrical signals or, alternatively, electrical signals to mechanical output. Piezoelectric devices are used in microsystems.
Becoming electrically polarised when subject to the mechanical stress; quartz for example produces an electric charge when squeezed.
A material that generates an electric charge when mechanically deformed. Conversely, when an external electric field is applied to piezoelectric materials they mechanically deform.
The generation of electricity from dielectric crystals that are subject to stress, or generation of stress from such crystals from an applied voltage.
A crystal property which causes a voltage to be developed across the crystal when mechanical stress is applied, or vice-versa.
having to do with systems driven by the effect of certain crystals, such as lead-zirconate-titanate, and other materials, which expand and contract in an alternating (charged) electrical field.
Material that produces an electrical response to a mechanical force.
the property of certain materials with the ability to change shape in an applied electric field; e.g. quartz is a naturally piezoelectric material. Typically, even in 'highly active' materials such as PZT (an optimised piezoelectric material) the effect is very small, of the order of 10-9 metre/Volt.
Having the ability to generate a voltage when mechanical force is applied, or to produce a mechanical force when a voltage is applied, as in a piezoelectric crystal.
A mineral that vibrates regularly when an electric current passes through it.
Electric current generated by pressure upon certain bony crystals
a dielectric material in which polarization is induced by the application of external forces.
Any material which provides a conversion between mechanical and electrical energy. For a piezoelectric crystal, if mechanical stresses are applied on two opposite faces, electrical charges appear on some other pair of faces.
Electrical current generated by mechanical stress in quartz and certain other crystals. ("Dorland's Illustrated Medical Dictionary," 24th Edition, W.B. Saunders Company, 1965.)
Transformation of mechanical force to electricity, or conversely, transformation of electricity to mechanical force.
A crystal-type device that generates a small voltage when placed under mechanical stress. A detonation sensor can be piezoelectric.
When mechanical pressure is applied to one of these materials, the crystalline structure produces a voltage proportional to the pressure. Conversely, when an electric field is applied, the structure changes shape producing dimensional changes in the material. The amount of deformation is proportional to the applied electric field and the d33 coefficient of the material.
