Fig. 1. Schematic picture of the CNTs forming a conductive path. A continuous network of CNTs is formed when the percolation threshold is reached. To measure the Joule heating power, the sample is placed between two electrodes and an external potential is applied. A thermocouple allows to evaluate the temperature increase. Both electrical resistances contributions to the percolative path, the intrinsic (Rint) and contact one (Rcon), are emphasized.
