Piezo- and pyroelectricity in polymer electrets and their applications

Author

Das-Gupta, D.K.

Author_Institution

Sch. of Electron. Eng. & Comput. Syst., Univ. of Wales, Bangor, UK

fYear

1996

fDate

25-30 Sep 1996

Firstpage

807

Lastpage

812

Abstract

Typical thin film polymer space charge electret materials are polytetrafluoroethylene (FEP). The corresponding dipolar electret materials are polyvinylidene fluoride, PVDF, its copolymer with trifluoroethylene P(VDF-TxFE), odd nylons and several copolymers of vinylidene cyanide, VDCN. The dipolar electrets display piezo- and pyroelectric responses. The present paper reviews briefly the properties of PVDF, P(VDF-TxFE), odd nylon and VDCN electrets and some applications

Keywords

dielectric polarisation; electrets; ferroelectric materials; piezoelectric materials; piezoelectric transducers; polymer blends; polymer films; polymers; pyroelectric devices; pyroelectricity; ultrasonic transducers; PVDF-trifluoroethylene copoloymers; US transducers; dipolar electret materials; odd nylons; piezoelectricity; polymer electrets; polytetrafluoroethylene; polyvinylidene fluoride; pyroelectricity; thin film polymer space charge electret materials; vinylidene cyanide copolymers; Capacitive sensors; Dielectric materials; Electrets; Ferroelectric materials; Piezoelectric polarization; Polymer films; Pyroelectricity; Space charge; Strain measurement; Stress;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 1996. (ISE 9), 9th International Symposium on

Conference_Location

Shanghai

Print_ISBN

0-7803-2695-4

Type

conf

DOI

10.1109/ISE.1996.578211

Filename

578211