PIEZOELECTRIC SENSITIVITY MEASUREMENTS OF CELLULOSE NANOFIBRIL SENSORS

Satu Rajala, Maija Vuoriluoto, Orlando J. Rojas, Sami Franssila, Sampo Tuukkanen

Abstract

Piezoelectric sensitivity of cellulose nanofibril (CNF) film sensors was measured using a mechanical shaker and charge amplifier setup. In-house fabricated CNF film sensors showed 5-7 pC/N sensitivity in ambient conditions. The CNF film used here contained randomly oriented fibrils, and the piezoelectric response is expected to increase remarkably after film polarization and fibril alignment. The results obtained in this study suggest that nanocellulose film is a suitable sensor material for applications in various fields such as material sciences, electronics and biomedical diagnostics.

Keywords

cellulose nanofibrils, piezoelectric sensors, sensitivity measurement

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IMEKO-WC-2015-TC3-086.pdf

DOI

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IMEKO TC

TC3 - Measurement of Force, Mass, Torque, and Gravity

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