Electrical-Thermal Switching in Carbon-Black–Polymer Composites as a Local Effect

D. Azulay, M. Eylon, O. Eshkenazi, D. Toker, M. Balberg, N. Shimoni, O. Millo, I. Balberg

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Following the lack of microscopic information about the intriguing well-known electrical-thermal switching mechanism in carbon-black–polymer composites, we applied atomic force microscopy in order to reveal the local nature of the process and correlated it with the characteristics of the widely used commercial switches. We conclude that the switching events take place in critical interparticle tunneling junctions that carry most of the current. The macroscopic switched state is then a result of a dynamic-stationary state of fast switching and slow reconnection of the corresponding junctions.

Original languageAmerican English
Pages (from-to)4
Number of pages1
JournalPhysical Review Letters
Issue number23
StatePublished - 2003


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