First, achieving the desired movement from a
piezoelectric crystal often requires large voltages, though mercifully at low DC currents.
The performance of the wire sensor is almost comparable to that of a conventional
piezoelectric crystal accelerometer.
The lengths of the
piezoelectric crystals determine the fundamental frequency of oscillation.
A variation of this device uses
piezoelectric crystal switches in place of mechanical switches.
The
piezoelectric crystal is key to the design of neural dust.
A
piezoelectric crystal vibrates when an alternating voltage is applied to it, and almost all of the energy given to the material is converted into mechanical motion.
The results obtained in this study," the researchers say, "demonstrate that a
piezoelectric crystal coated with a specific antibody could be used as an analytical tool in gas-phase analysis.
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.
The FBG fiberoptic technology is far superior to traditional sensor technologies that use a transducer (a
piezoelectric crystal or thermocouple), and produce weaker signals.
E[acute accent]The basic SAW device is a thin metal film structure deposited on top of a
piezoelectric crystal substrate with no power supplies.
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.
