piezoelectric crystal


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to piezoelectric crystal: piezoelectric effect, Piezoelectric transducer

piezoelectric crystal

Cardiac pacing A crystal that produces electrical signals when subjected to mechanical deformation; in pacing, PC sensors are used to detect motion, changes in pressure, etc, in certain rate-responsive pacemakers
References in periodicals archive ?
Forces from the sensing vane are transferred via the torque tubes to the piezoelectric crystal sensors, which are placed in the wall of the flowmeter out of the flow stream.
which focuses on the benefits and trade-off's of piezoelectric crystals and MEMS oscillators in high-reliability applications.
Conventional ultrasound scanners use piezoelectric crystals to create images of the inside of the body and send them to a computer to create sonograms.
It is noteworthy to mention at this stage that no previous investigations have been presented deriving explicit expressions for the deformed field components, or their angular variations near the tip of a crack, within a stack of nonuniformly loaded parallel cracks, even in hexagonal piezoelectric crystals or purely isotropic elastic, nor even when the loads are uniform.
Piezoelectric crystals transform pressure or motion into electricity when they are compressed or vibrated; phonograph needles are one common example.
The equipment falls under Chapter 85 of the GST Rate Schedule for Goods and include diodes, transistors and similar semiconductor devices, photosensitive semiconductor devices including photo voltaic cells, light emitting diodes ( LED) and mounted piezoelectric crystals.
Piezoelectricity is a well-studied electromechanical coupling effect in which the mechanical strain leads to electric polarization in piezoelectric crystals, or vice versa.
Ultrasound images are generated by emission of high frequency sound waves from piezoelectric crystals within the ultrasound probe.
Weihnacht, "Gyroscopic effect for SAW in common piezoelectric crystals," in Proceedings of the IEEE International Ultrasonics Symposium (IUS '09), pp.
The brush also has a ceramic covering to maximise heat retention and piezoelectric crystals which release ions to protect the hair and scalp.
McAlpine and his colleagues at Princeton have developed a way of converting everyday body movements into electricity using a flexible electricity-producing sheet of rubber imprinted with piezoelectric crystals that can be implanted in the body.
Piezoelectric crystals make formidable transducers--a key component of medical, commercial, and industrial probes.