Transmission of stress induced electric signals in dielectric media
| Autor: | M. S. Lazaridou, Nicholas V. Sarlis, P. Kapiris, Panayiotis A. Varotsos |
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| Rok vydání: | 1998 |
| Předmět: | |
| Zdroj: | Journal of Applied Physics. 83:60-70 |
| ISSN: | 1089-7550 0021-8979 |
| DOI: | 10.1063/1.366702 |
| Popis: | The conditions under which pressure (stress) variations on solids, containing charged defects, can lead to the emission of transient electric signals, are discussed. The resulting electric field E varies as 1/d3 (where d denotes the distance from the emitting source), in the simple case when the surrounding medium is homogeneous and isotropic. We show that this behavior changes to 1/d when studying the electric field within a cylindrical channel of radius R and infinite length having conductivity appreciably larger than that of the host medium; this holds up to a certain (reduced) distance d/R, which increases versus the conductivity ratio. We also investigate the variation of the electric field, versus the distance, inside a layer of width w and infinite extent having conductivity appreciably larger than that of the host medium; we then find that the electric field decreases as 1/d2, in a wide range of distances up to a certain value of d/w, which is controlled by the conductivity ratio. In both conducti... |
| Databáze: | OpenAIRE |
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