Home Products Applications Catalog Custom/OEM Technical Information News International Sales Repairs Contact

Technical Information
PicoQ® Sensor Technology
Flexure Motion
Eliminating Coupled Motion
High Resolution Sensors
Nanopositioning Accuracy
>>Piezoactuator Information

Technical Papers
High-Speed Precision for 3-D Images
Long Range Motion with Nanometer Precision
Piezoresistive Sensors
Understanding Noise at the Nanometer Scale
Nanopositioning Resolution

   E-Mail Us

Piezoelectric materials change dimension when an electric field is applied. This change is quite small, ~0.1%, but large forces are generated, ~ 100-1000 N. Since the dimensional change is moderately proportional to the applied field, piezoelectric materials or piezoactuators, are ideal for positioning applications where nanometer sensitivity is required. A typical piezoelectric material is lead zirconium titanate (PZT).

In many ways, piezoelectric materials are similar to magnetic materials. Both exhibit hysteresis, a Curie Temperature and a poling direction. As the operating temperature approaches the Curie Temperature the actuators depole, the domains become unaligned, and the expansion with applied field is greatly reduced .Mad City Labs nanopositioning systems use multilayer piezoactuators. A multilayer piezoactuator is a stack of PZT thin films electrically connected in parallel. The thinner the film, the lower the voltage required for maximum expansion of the multilayer stack.

mclgen@madcitylabs.com       phone: 608.298.0855       fax: 608.298.9525

Copyright © 2023