Title :
Piezo- and pyroelectricity in polymer electrets and their applications
Author_Institution :
Sch. of Electron. Eng. & Comput. Syst., Univ. of Wales, Bangor, UK
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;
Conference_Titel :
Electrets, 1996. (ISE 9), 9th International Symposium on
Conference_Location :
Shanghai
Print_ISBN :
0-7803-2695-4
DOI :
10.1109/ISE.1996.578211
