development and applications of piezoelectric crystals
development and applications of piezoelectric crystals
development and applications of piezoelectric crystals
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HISTORY OF PIEZOELECTRICITYDerived from the Greek word piezein, which means to squeeze or pressDiscovered in 1880 by Pierre <strong>and</strong> Jacques Curie while conducting a studyon effects <strong>of</strong> pressure on specific <strong>crystals</strong>In 1917 Paul Langevin used quartz <strong>crystals</strong> in an ultrasonic submarine todetect the amount <strong>of</strong> time it took to hear a returned echoThis led to more underwater <strong>applications</strong> <strong>of</strong> <strong>piezoelectric</strong> materialsAround 1965, Japanese scientists successfully developed the basics <strong>of</strong> theceramic <strong>piezoelectric</strong> disks which sparked the use <strong>of</strong> the disks around theworld <strong>and</strong> for a variety <strong>of</strong> <strong>applications</strong>Peizo materials are divided into four groups- generators, sensors, actuators,<strong>and</strong> transducers