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 inSensors and actuators. A. Physical. Vol. 244; pp. 285 - 291
Main Authors Lemaire, E., Moser, R., Borsa, C.J., Briand, D.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 15.06.2016
Subjects
Actuators
Biodegradability
Biodegradable
Composite
Constants
Piezoelectric
Piezoelectricity
Rochelle salt
Sensors
Sodium
Sustainable
Transducers
Paper
Rochelle salt
Biodegradable
Composite
Sustainable
Piezoelectric
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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.
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ISSN:0924-4247
1873-3069
DOI:10.1016/j.sna.2016.04.024