Laminated tubular-channel ferroelectret systems from low-density Polyethylene Films and from Fluoroethylene-propylene Copolymer Films - A comparison
- A template-based lamination technique for the manufacture of ferroelectrets from uniform electret films was recently reported. In the present work, this technique is used to prepare similar ferroelectret structures from low-density polyethylene (LDPE) films and from fluoro-ethylene-propylene (FEP) copolymer films. A comparative analysis of the pressure-, temperature-, and frequency-dependent piezoelectric properties has been performed on the two ferroelectret systems. It is observed that the FEP ferroelectrets exhibit better piezoelectric responses and are thermally more stable. The difference between the piezoelectric d(33) coefficients of the two ferroelectret systems is partially explained here by their different elastic moduli. The anti-resonance peaks of both structures have been investigated by means of dielectric resonance spectroscopy and electroacoustic sound-pressure measurements. A difference of more than 10 kHz is observed between the anti-resonance frequencies of the two ferroelectret systems.
Author details: | Ruy Alberto Pisani AltafimORCiD, Dmitry RychkovORCiD, Werner WirgesORCiD, Reimund GerhardORCiDGND, Heitor Cury Basso, Ruy Alberto Pisani AltafimORCiD, Martin Melzer |
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ISSN: | 1070-9878 |
Title of parent work (English): | IEEE transactions on dielectrics and electrical insulation |
Publisher: | Inst. of Electr. and Electronics Engineers |
Place of publishing: | Piscataway |
Publication type: | Article |
Language: | English |
Year of first publication: | 2012 |
Publication year: | 2012 |
Release date: | 2017/03/26 |
Tag: | Ferroelectrets; electro-mechanical transducers; frequency response; piezoelectrets; piezoelectricity; static-pressure dependence; temperature dependence |
Volume: | 19 |
Issue: | 4 |
Number of pages: | 8 |
First page: | 1116 |
Last Page: | 1123 |
Funding institution: | CAPES; DAAD [PROBRAL D/08/11608]; European Union |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
Peer review: | Referiert |