Electronic micropositioning with ferroelastic-ferroelectrics.
The change in crystal shape which accompanies domain wall motion in a coupled ferroelastic-ferroelectric crystal such as beta-gadolinium molybdate can be utilized for precise micropositioning under electronic control. The displacement available from such a crystal is 10 to 100 times greater than a piezoelectric element of similar dimensions can provide.
Lemons
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Bell Laboratories, Holmdel, NJ 07733, USA.
Coldren
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