Space-charge-enhanced electromechanical response in thin-film polyurethane elastomers
- 21 July 1997
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 71 (3), 386-388
- https://doi.org/10.1063/1.119545
Abstract
We show that the large electrical-field-induced strain response observed in certain polyurethane elastomers is a thin-film effect. Based on the frequency dispersion of the strain response in samples with different thicknesses and the thermally stimulated discharge current on samples with different processing conditions, we suggest that the charge injection, an interface effect, which results in a nonuniform space-charge distribution and, hence, a nonuniform electric-field distribution across the sample thickness, is responsible for the enhanced electromechanical response in thin polyurethane samples.Keywords
This publication has 9 references indexed in Scilit:
- An experimental investigation of electromechanical responses in a polyurethane elastomerJournal of Applied Physics, 1997
- Space charge in polyethylene/ionomer blendsIEEE Transactions on Dielectrics and Electrical Insulation, 1995
- Ionic behavior of dc conduction in polyetheretherketoneIEEE Transactions on Dielectrics and Electrical Insulation, 1995
- Heat treatment effects on the metal-polymer interface and space-charge formation in thin metallized polyethylene terephthalate filmsJournal of Applied Physics, 1994
- Clamping effect on the piezoelectric properties of poly(vinylidene fluoride-trifluoroethylene) copolymerFerroelectrics, 1993
- Observation of charge behavior in multiply low-density polyethyleneJournal of Applied Physics, 1993
- Effect of polymer matrices on charge transport in molecularly doped polymersJournal of Applied Physics, 1993
- Injection-limited trap modulated hopping conduction in carbonyl doped polyethyleneJournal of Applied Physics, 1992
- Effects of space charge on electrical conduction in high-density polyethyleneJournal of Physics D: Applied Physics, 1985