Author/Authors :
Adriaanse، نويسنده , , L.J. and Faneyte، نويسنده , , I.-P. and Martens، نويسنده , , H.C.F. and Reedijk، نويسنده , , J.A. and Brom، نويسنده , , H.B. and Michels، نويسنده , , M.A.J. and Brokken-Zijp، نويسنده , , J.C.M.، نويسنده ,
Abstract :
In disordered systems, the dependence of the DC conductivity on the electric field E increases when the temperature is lowered. We studied the non-ohmic conductivity σ(E) of a series of carbon-black/polymer composites as a function of temperature T and concentration p. The low-temperature results indicate that the strength of E affects the path along which conduction proceeds through the materials. The new characteristic length scale is a few times larger than found in the zero electric-field limit.
