Abstract
Internally charged closed-cell polymer electrets exhibit ferroelectric-like behavior and have been called ferroelectrets. They are attractive for soft electroactive transducers, the high compressibility leads to d33 transducer coefficients exceeding those of ferroelectric polymers. A technique for the measurement of the elastic modulus and the transducer coefficient of ferroelectrets is reported. The elastic behavior of ferroelectretic polypropylene foams is correlated with the piezoelectric-like properties. Prestress treatments linearize the transducer properties.
Original language | English |
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Article number | 031910 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 86 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2005 |
MoE publication type | A1 Journal article-refereed |
Keywords
- polymer foams
- ferroelectric materials
- electrets
- elastic moduli
- stress-strain relations
- electromechanical effects
- compressibility