Alamin Dow, A. B., Schmid, U., & Kherani, N. P. (2011). Analysis and modeling of a piezoelectric energy harvester stimulated by β-emitting radioisotopes. Smart Materials and Structures, 20(11), 115019. https://doi.org/10.1088/0964-1726/20/11/115019
Electrical and Electronic Engineering; Mechanics of Materials; Condensed Matter Physics; General Materials Science; Atomic and Molecular Physics, and Optics; Civil and Structural Engineering; Signal Processing
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Abstract:
The analysis, modeling, and validation of a piezoelectric energy harvester utilizing a radioisotope source are presented and discussed. The device employs tritiated silicon as a radioisotope source to drive the charging and actuating cycles of the piezoelectric cantilever. Tritiated silicon emits energetic β particles which lead to charge partition, creating an electrostatic force between the tritiated substrate and the piezoelectric cantilever. Due to this continuous charge-discharge procedure, vibrational cycles are generated in the piezoelectric cantilever. The energy from the piezoelectric capacitor is appropriately rectified to provide electrical power to a microelectromechanical system (MEMS) device. The modeling results have been analyzed and compared with the available experimental results, showing a very good agreement. Thus, the analytical and modeling study can be applied to optimize piezoelectric energy harvester designs.
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Research Areas:
Materials Characterization: 10% Special and Engineering Materials: 20% Structure-Property Relationship: 15% Sensor Systems: 35% Sustainable and Low Emission Mobility: 10% Sustainable Production and Technologies: 10%
