Traditional MEMS actuators have limited stroke and force characteristics. This paper describes the development of a novel hybrid actuation solution, which utilizes a micro-machined actuator array to provide switching of mechanical motion of a larger meso-scale piezo-electric actuator. One motivating application of this technology is the development of a tactile display, where discrete mechanical actuators apply vibratory excitation at discrete locations on the skin. Specifically, this paper describes the development fabrication and characterization of a 4 × 5 micro-actuator array of individual vibrating pixels for fingertip tactile communication. The individual pixels are turned ON and OFF by pairs of microscopic thermal actuators, while the main vibration is generated by a vibrating piezo-electric plate. A thermo-electric and non-linear thermo-elastic models have been developed to account for the temperature dependence of the electrical resistance and the lateral buckling of the hot, respectively. Comparison between analytical and finite element models indicated very good agreement, confirming that the buckling of the hot arm has most significant impact in the overall actuator performance. The fabrication sequence and the actuation performance of the array are also presented.
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ASME 2004 International Mechanical Engineering Congress and Exposition
November 13–19, 2004
Anaheim, California, USA
Conference Sponsors:
- Microelectromechanical Systems Division
ISBN:
0-7918-4714-4
PROCEEDINGS PAPER
Hybrid Micro-Meso Mechanical Switch Array for Tactile Displays Available to Purchase
Kalin V. Lazarov
Kalin V. Lazarov
University of Arizona
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Eniko T. Enikov
University of Arizona
Kalin V. Lazarov
University of Arizona
Paper No:
IMECE2004-60439, pp. 181-188; 8 pages
Published Online:
March 24, 2008
Citation
Enikov, ET, & Lazarov, KV. "Hybrid Micro-Meso Mechanical Switch Array for Tactile Displays." Proceedings of the ASME 2004 International Mechanical Engineering Congress and Exposition. Microelectromechanical Systems. Anaheim, California, USA. November 13–19, 2004. pp. 181-188. ASME. https://doi.org/10.1115/IMECE2004-60439
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