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Piezoelectric actuator having minimal displacement drift with temperature and high durability

  • US 20050258715A1
  • Filed: 05/19/2004
  • Published: 11/24/2005
  • Est. Priority Date: 05/19/2004
  • Status: Abandoned Application
First Claim
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1. A piezoelectric bending actuator comprising:

  • a first piezoelectric layer adapted to bend in response to an applied voltage;

    a second piezoelectric layer adapted to flatten in response to an applied voltage, the second piezoelectric layer mounted adjacent the first piezoelectric layer, the first and second piezoelectric layers moving opposite to each other in response to a change in temperature such that the piezoelectric bending actuator is stable over a range of temperatures.

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