piezoelectric effect

Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

Related to piezoelectric effect: Piezoelectric transducer

piezoelectric effect

piezoelectric effect (pīēˌzōĭlĕkˈtrĭk), voltage produced between surfaces of a solid dielectric (nonconducting substance) when a mechanical stress is applied to it. A small current may be produced as well. The effect, discovered by Pierre Curie in 1883, is exhibited by certain crystals, e.g., quartz and Rochelle salt, and ceramic materials. When a voltage is applied across certain surfaces of a solid that exhibits the piezoelectric effect, the solid undergoes a mechanical distortion. Piezoelectric materials are used in transducers, e.g., phonograph cartridges, microphones, and strain gauges, which produce an electrical output from a mechanical input, and in earphones and ultrasonic radiators, which produce a mechanical output from an electrical input. Piezoelectric solids typically resonate within narrowly defined frequency ranges; when suitably mounted they can be used in electric circuits as components of highly selective filters or as frequency-control devices for very stable oscillators.

piezoelectric effect

[pē¦ā·zō·ə′lek·trik i′fekt]

(solid-state physics)

The generation of electric polarization in certain dielectric crystals as a result of the application of mechanical stress.

The reverse effect, in which application of a voltage between certain faces of the crystal produces a mechanical distortion of the material.

piezoelectric effect

, piezoelectricity

Physics

a. the production of electricity or electric polarity by applying a mechanical stress to certain crystals

b. the converse effect in which stress is produced in a crystal as a result of an applied potential difference

Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

References in periodicals archive ?

The proposed characterization gives an idea about the parameters that directly influence the dielectric and mechanical proprieties in porous EVA copolymer films for reaching pseudo piezoelectric effects. Our study shows that the dielectric parameters improve with increasing the porosity.

Dielectric and Mechanical Optimization Properties of Porous Poly(ethylene-co-vinyl acetate) Copolymer Films for Pseudo-Piezoelectric Effect

Piezoelectric effect of PMN ceramic is generated by external force.

Quantitative Analysis of Damping Enhancement and Piezoelectric Effect Mechanism of CNTs/PMN/EP Composites

The increase in crystallinity results in an increase in elastic modulus around 3 times, and piezoelectric effect is found to be enhanced around 55%.

Polyvinylidene Difluoride Piezoelectric Electrospun Nanofibers: Review in Synthesis, Fabrication, Characterizations, and Applications

For a long time, the piezoelectric effect was only known for crystals.

Flexible Material Generates Electricity When Stressed

Keywords: piezoelectric effect, electricity, piezoelectric power, composite, generator.

PJEZOELEKTRINIO NANOKOMPOZITO NAUDOJIMAS ELEKTROS GAVYBAI

During acceleration the seismic mass exerts a force on the piezoelectric material beam resulting in the generation of a charge due to the piezoelectric effect. Piezoelectric accelerometers have many desirable features, such as extremely low power consumption, high sensitivity, inherent temperature stability, compatibility with CMOS manufacturing process [31-33], high Q in the range of 80 to 100, low damping, high output impedance, and wide operating temperature range (up to 300[degrees]C) [31, 34, 35].

Multiresonant Frequency Piezoelectric Energy Harvesters Integrated with High Sensitivity Piezoelectric Accelerometer for Bridge Health Monitoring Applications

To account for the piezoelectric effect, flexoelectric effect, and nonlocal mechanical and electrical effects, an electric Gibbs energy density Gb including the energy of elasticity, piezoelectricity, flexoelectricity, and couple stress was proposed by

Flexoelectric Effect on Vibration of Piezoelectric Microbeams Based on a Modified Couple Stress Theory

Thus, this mechanically induced electrical energy has great regulatory effect on the cellular and molecular levels." Which means that NASA's new bandage adds to the piezoelectric effect already produced in human cells, thus making wounds heal faster.

Science behind NASA's new electric bandage for faster wound healing

Elastic-viscoplastic material with internal state variable and piezoelectric effect, also called electro-elasto-viscoplastic material with internal state variable is given by

On a frictional contact problem with adhesion in piezoelectricity

Sensors using the piezoelectric effect can measure changes in pressure, sound, acceleration, temperature, strain, or force by converting them to an electrical charge.

Stress and charge: Piezoelectricity is the charge that accumulates in certain solid materials in response to applied mechanical stress. Andy Rye reviews the materials and recent applications

This is the first time anyone has shown the piezoelectric effect in atomically thin films, although the property has been predicted.

A generator in just two dimensions: researchers at Columbia University and Georgia Tech have demonstrated the world's thinnest electric generator, a film of molybdenum disulfide a few atoms thick

A reverse piezoelectric effect is used to create a motion in a piezo stack, with many layers of a piezoelectric material laminated with electrodes.

Smaller worlds: John Andrew Clarke of Queensgate Instruments looks at the shrinking world of nanopositioning