Electromechanical response of cellular electret films

22 November 1999

journal article
Published by AIP Publishing in Applied Physics Letters

Vol. 75 (21) , 3405-3407
https://doi.org/10.1063/1.125308

Abstract

Charged polypropylene films with a cellular structure show pseudopiezoelectric properties. Measurements of the direct and inverse electromechanical transducer constants of such films, relating to the operation as sensors and as actuators, respectively, yield values of ≈200 pC/N. These values can be explained with a theoretical model by assuming reasonable charge distributions and charge densities. The experimental and the theoretical results show the reciprocity of the transducer constants.

Keywords

GAUSSIAN PROCESSES
ELECTRODES
CHARGE DISTRIBUTION
YOUNG S MODULUS
SENSORS
YOUNGS MODULUS
ACTUATORS
SOLIDS
CHARGE DENSITY
THERMAL STABILITY
ELECTRETS

This publication has 1 reference indexed in Scilit:

High surface-charge stability of porous polytetrafluoroethylene electret films at room and elevated temperatures
Journal of Physics D: Applied Physics, 1999