Material Piezoelectric materials
They produce an electric field when exposed to a change in dimension caused by an imposed mechanical force (piezoelectric or generator effect). Conversely, an applied electric field will produce a mechanical stress (electrostrictive or motor effect).

They transform energy from mechanical to electrical and vice-versa. The stress is very small, 0.1-0.3%. They are used for sensing purposes (e.g. microphone, transducer), and for actuating applications.

Similar to piezoelectric materials are electrostrictive and magnetostrictive materials used in high prescision actuation. They are ferromagnetic materials which experience an elastic strain when subjected to an electric or magnetic field respectively.
Category Responsive (smart) materials, Moving materials
Products Smart skis
Mothra plain
Acoustic transducer
Multilayer cofired actuator
Magnetostrictive linear motor
Smart skin
Similar materials Titanate Pb-La-Zi
Titanate, Pb-Zi
Lead metanobiate
Polyvinylidene fluoride (PVFD)
References Piezoelectric materials
EDO ceramics
Piezoelectric polymers
Photo Thomas Nissen (Computer graphics)
Copyright © 1996-2003 Torben Lenau
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