Preliminary study of multi-layer space-charge electrets with piezoelectric properties from porous and non-porous Teflon films

Author

Gerhard-Multhaupt, R. ; Xia, Zhongfu ; Kunstler, W. ; Pucher, A.

Author_Institution

Dept. of Phys., Potsdam Univ., Germany

fYear

1999

fDate

1999

Firstpage

273

Lastpage

276

Abstract

Non-uniform electrets consisting of at least one “soft” porous and at least one “hard” nonporous Teflon PTFE film were investigated for their piezoelectric properties. Two, three, or four films were corona-charged and assembled in various multi-layer stacks. Quasi-static piezoelectric responses of the same order as in ferroelectric fluoropolymers could be obtained in the best cases. As expected, the observed piezoelectric coefficients scale linearly with the charge density and also strongly depend on the respective layer geometry

Keywords

dielectric thin films; electrets; piezoelectric thin films; polymer films; porous materials; space charge; charge density; corona-charged; multi-layer space-charge electrets; multi-layer stacks; nonporous Teflon films; piezoelectric properties; porous Teflon films; quasi-static piezoelectric responses; respective layer geometry; Assembly; Electrets; Electrodes; Ferroelectric films; Physics; Piezoelectric films; Polymers; Pyroelectricity; Solids; Thermal stresses;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 1999. ISE 10. Proceedings. 10th International Symposium on

Conference_Location

Athens

Print_ISBN

0-7803-5025-1

Type

conf

DOI

10.1109/ISE.1999.832040

Filename

832040