Journal
SMART MATERIALS AND STRUCTURES
Volume 22, Issue 8, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0964-1726/22/8/085013
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Funding
- Smart-Mix Program (SmartPie) of the Netherlands Ministry of Economic Affairs
- Netherlands Ministry of Education, Culture and Science
- Vietnam National Foundation for Science and Technology Development (NAFOSTED) [103.02-2011.43]
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This research presents an optimization of piezoelectric membrane actuators by maximizing the actuator displacement. Membrane actuators based on epitaxial Pb(Zr, Ti)O-3 thin films grown on all-oxide electrodes and buffer layers using silicon technology were fabricated. Electrode coverage was found to be an important factor in the actuation displacement of the piezoelectric membranes. The optimum electrode coverage for maximum displacement was theoretically determined to be 39%, which is in good agreement with the experimental results. Dependences of membrane displacement and optimum electrode coverage on membrane diameter and PZT-film/Si-device-layer thickness ratio have also been investigated.
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