• search hit 45 of 708
Back to Result List

Controlled inflation of voids in cellular polymer ferroelectrets : optimizing electromechanical transducer properties

  • When exposed to sufficiently high electric fields, polymer-foam electret materials with closed cells exhibit ferroelectric-like behavior and may therefore be called ferroelectrets. In cellular ferroelectrets, the influence of the cell size and shape distributions on the application-relevant properties is not yet understood. Therefore, controlled inflation experiments were carried out on cellular polypropylene films, and the resulting elastical and electromechanical parameters were determined. The elastic modulus in the thickness direction shows a minimum with a corresponding maximum in the electromechanical transducer coefficient. The resonance frequency shifts as a function of the elastic modulus and the relative density of the inflated cellular films. Therefore, the transducer properties of cellular ferroelectrets can be optimized by means of controlled inflation. (C) 2004 American Institute of Physics

Export metadata

Additional Services

Search Google Scholar Statistics
Metadaten
Author details:Michael WegenerORCiDGND, Werner WirgesORCiD, Reimund GerhardORCiDGND, M. Dansachmüller, R. Schwödiauer, Simona Bauer-Gogonea, Siegfried BauerGND, Mika Paajanen, Hannu Minkkinen, J. Raukola
Publication type:Article
Language:English
Year of first publication:2004
Publication year:2004
Release date:2017/03/25
Source:Applied Physics Letters. - 84 (2004), S. 392 - 394
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie
Peer review:Referiert
Institution name at the time of the publication:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik
Accept ✔
This website uses technically necessary session cookies. By continuing to use the website, you agree to this. You can find our privacy policy here.