Green paper-based piezoelectronics for sensors and actuators

We report a novel biodegradable piezoelectric composite fabricated from paper and the piezoelectric salt, sodium potassium tartrate tetrahydrate (Rochelle salt, which we term PiezoSalt). The piezoelectric composite is non-toxic and is fabricated free of environmentally harmful solvents by impregnati...

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Bibliographic Details
Published in:Sensors and actuators. A. Physical. 2016-06, Vol.244, p.285-291
Main Authors: Lemaire, E., Moser, R., Borsa, C.J., Briand, D.
Format: Article
Language:English
Subjects:
Actuators
Biodegradability
Biodegradable
Composite
Constants
Piezoelectric
Piezoelectricity
Rochelle salt
Sensors
Sodium
Sustainable
Transducers
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Summary:We report a novel biodegradable piezoelectric composite fabricated from paper and the piezoelectric salt, sodium potassium tartrate tetrahydrate (Rochelle salt, which we term PiezoSalt). The piezoelectric composite is non-toxic and is fabricated free of environmentally harmful solvents by impregnating PiezoSalt into a paper matrix through the crystallization of a concentrated PiezoSalt brine solution. The composite exhibits an effective piezoelectric constant between 3 and 25 pCN−1, dielectric constant of 7, mass density of 625kgm−3, and a Young’s modulus between 7 and 8GPa. When directly actuated, cm-scale cantilevers consisting of PiezoSalt paper produced clearly audible sound waves, illustrating one potential application. PiezoSalt paper composite provides a scalable, high throughput approach for biodegradable sensors and transducers with unsurpassed environmentally friendly processing.
ISSN:0924-4247
1873-3069
DOI:10.1016/j.sna.2016.04.024