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Piezoelectricity in unpoled hydroxyapatite ceramics
Date
2024
Abstract
Piezoelectric Sensors have gained significant importance in recent years due to conversion of mechanical stress into electrical current. Hydroxyapatite is excellent biocompatible, non-toxic and piezoelectric material for biomedical applications. In this paper, pellets of hydroxyapatite are prepared by Spark Plasma Sintering (SPS) by two different powders. The samples were characterized by the X-Ray diffractometer (XRD), Atomic Force Microscope (AFM), Piezometer and Piezo-response Microscope. Macroscopically these ceramics show weak longitudinal piezoelectricity. Local piezoelectric coefficients showed both in plane and out of plane piezoelectricity with magnitude as high as 4-5pC/N. Further improvements and tuning of piezoelectric properties are possible through thermoelectric poling and creating proper resonator structure for use as sensors and actuators.
Supervisor
Description
Publisher
University of Limerick
Citation
20th Sensors and Their Applications Conference, 2024, Paper No: 55
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Paper_55.pdf
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