Numerical evaluation of the dielectric polarization distribution from thermal‐pulse data

作者: F. I. Mopsik , A. S. DeReggi

DOI: 10.1063/1.331212

关键词:

摘要: A method for numerically carrying out the Fourier analysis thermal‐pulse experiment is given. It shown that it possible to obtain polarization distribution across thickness of a thin film (25 μm) within limits set by experimental data. For such films, resolution 0.1 possible. Results are given using charge measurement rather than voltage measurement. The effect finite‐width pulse cut off coefficients in way as smooth any distribution. Pulsing sample alternately on both sides greatly increase experiment. PVF2 and P(VF2‐TFE) copolymer show interesting details can be found

参考文章(10)
James Ward Brown, Ruel Vance Churchill, Fourier series and boundary value problems ,(1938)
Richard Courant, David Hilbert, Methods of Mathematical Physics ,(1947)
A. S. DeReggi, C. M. Guttman, F. I. Mopsik, G. T. Davis, M. G. Broadhurst, Determination of Charge or Polarization Distribution across Polymer Electrets by the Thermal Pulse Method and Fourier Analysis Physical Review Letters. ,vol. 40, pp. 413- 416 ,(1978) , 10.1103/PHYSREVLETT.40.413
Heinz von Seggern, Thermal‐pulse technique for determining charge distributions: Effect of measurement accuracy Applied Physics Letters. ,vol. 33, pp. 134- 137 ,(1978) , 10.1063/1.90282
P. Laurençeau, G. Dreyfus, J. Lewiner, New Principle for the Determination of Potential Distributions in Dielectrics Physical Review Letters. ,vol. 38, pp. 46- 49 ,(1977) , 10.1103/PHYSREVLETT.38.46
R. E. Collins, Distribution of charge in electrets Applied Physics Letters. ,vol. 26, pp. 675- 677 ,(1975) , 10.1063/1.88032
G. M. Sessler, J. E. West, D. A. Berkley, G. Morgenstern, Determination of Spatial Distribution of Charges in Thin Dielectrics Physical Review Letters. ,vol. 38, pp. 368- 371 ,(1977) , 10.1103/PHYSREVLETT.38.368
R. E. Collins, Measurement of charge distribution in electrets Review of Scientific Instruments. ,vol. 48, pp. 83- 91 ,(1977) , 10.1063/1.1134854
R. E. Collins, Analysis of spatial distribution of charges and dipoles in electrets by a transient heating technique Journal of Applied Physics. ,vol. 47, pp. 4804- 4808 ,(1976) , 10.1063/1.322521
R. E. Collins, Practical application of the thermal pulsing technique to the study of electrets Journal of Applied Physics. ,vol. 51, pp. 2973- 2986 ,(1980) , 10.1063/1.328109