Low voltage single crystal actuators

Xiaoning Jiang, Paul W. Rehrig, Jun Luo, Wesley S. Hackenberger, Shujun Zhang, Thomas R. Shrout

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations


In this paper low voltage single crystal actuators were investigated using thin PMN-PT plates for applications requiring low voltage, large strain, low profile and/or actuation at cryogenic temperatures. Firstly, single crystal thickness effect on piezoelectric properties was studied by investigating the relationship between electromechanical coupling coefficient of PMN-PT crystals and the crystal thickness. It was found that electromechanical coupling coefficient (k t) of 50 μm, 75 μm and 100 μm PMN-PT single crystal thin plates are 0.5, 0.51, and 0.55, respectively, which are slightly lower than that of bulk single crystal (0.6). A couple of single crystal actuators were then assembled using crystal plates with thickness of 150-200 μm. These actuators were characterized by measuring strain vs. electric field at room temperature and cryogenic temperatures. A 3 mm × 3 mm × 19 mm single crystal stack actuator showed a 21 μm stroke at room temperature under 150 V, and a 10 μm stroke at 60 K under 200 V. A 5 mm × 5 mm × 12 mm single crystal actuator showed 13.5 μm stroke at room temperature under 150 V, and 6 μm stroke at 77 K under 150 V. These low voltage actuators hold promising for space precise positioning and adaptive structures and cryogenic SEM, SPM and STM applications.

Original languageEnglish (US)
Title of host publicationSmart Structures and Materials 2006 - Active Materials
Subtitle of host publicationBehavior and Mechanics
StatePublished - 2006
EventSmart Structures and Materials 2006 - Active Materials: Behavior and Mechanics - San Diego, CA, United States
Duration: Feb 27 2006Mar 2 2006

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherSmart Structures and Materials 2006 - Active Materials: Behavior and Mechanics
Country/TerritoryUnited States
CitySan Diego, CA

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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