If the electric field vary linearly(e.g.along thickness) in a piezoelectric material , it is said that there is electrical locking in piezoelectricity.
what does it mean electrical locking in piezoelectricity?
Piezoelectric locks are used in piezoelectric motors, relying on the positive strain in piezoelectric ceramics in the direction of applied electric field. The locking mechanism is related to the hysteresis form of the polarisation in these material as function of applied electric field (the polarisation vector retains a non-vanishing value on removing the applied electric field). See Figs 1.3 (a) and (b) in the attached page.
https://www.americanpiezo.com/knowledge-center/piezo-theory/piezoelectricity.html
https://en.wikipedia.org/wiki/Piezoelectric_motor#Locking_mechanisms
- Badges
- Science topic
- Similar topics
- Physics
- Condensed Matter Physics