Large Deflection Microactuators for Translation or Rotation

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An actuator is a type of motor that is used to move or control a system. These devices convert energy into motion. Thermal actuators usually require a relatively large amount of heat, while electrostatic actuators are usually constrained to operate in a clean environment.

Purdue University researchers have developed a novel type of piezoelectric microactuator that can produce large translational or rotational deflections while overcoming these limitations. Thus, the actuator requires less power and can operate in the aqueous conditions required by many biomedical applications.

Additionally, this piezoelectric actuator uses lateral deflection to create an 'S' shape upon actuation. This large deflection actuator has potential application in a variety of fields, including biomedical engineering, optics, micro/nanoassembly, or scanning probe microscopy.

Advantages:
-Produces large rotational or translational deflections
-Requires less power than thermoelectric actuators
-Operates in aqueous conditions not tolerated by electrostatic actuators
-Uses lateral deflection

Potential Applications:
-Materials
-Manufacturing
May 31, 2013
Utility Patent
United States
9,190,600
Nov 17, 2015

Nov 8, 2012
Provisional-Patent
United States
(None)
(None)
Purdue Office of Technology Commercialization
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