D.T. Grubb, D.Y. Yoon
Polymer communications Guildford
Using polarized poly(vinylidene fluoride) films we have demonstrated a new method for determining the pyroelectric coefficient of thin polymer films. In contrast to previous techniques, we utilize the dielectric absorption of the sample itself by applying a radio-frequency pulse to generate heat uniformly throughout the film. The pyroelectric coefficient is obtained without any further calibration by measuring simultaneously the generated charge. Since a spatially uniform temperature increase is achieved in the order of milliseconds, the values obtained represent a true average of the bulk polarization regardless of its spatial distribution.
D.T. Grubb, D.Y. Yoon
Polymer communications Guildford
Cattien Nguyen, R. Beyers, et al.
ACS Spring 1999
J. Lüning, J. Stöhr, et al.
Macromolecules
Sanat K. Kumar, D. Ausserre, et al.
ACS Division of Polymer Chemistry Dallas Meeting 1989