Patent ID: 8623509

Claim:
A conductive carbon composite material comprising: particles of a cylindrical form of conductive carbon with an aspect ratio larger than one; particles of a planar form of conductive carbon with an aspect ratio larger than one, wherein the total area of the particles of the planar form of conductive carbon is of the same order of magnitude as the product of the number of particles of the cylindrical form of conductive carbon present and of an area established by the mean square radius of gyration of the particles of the cylindrical form of conductive carbon, wherein the particles of the cylindrical form of conductive carbon and the planar form of conductive carbon are dispersed in one another in the mass ratio from 1:100 to 100:1, and wherein the combination of the cylindrical form of conductive carbon and the planar form of conductive carbon provides a sensitivity to the change in electrical resistance in response to a temperature change, the change in electrical resistance in response to the temperature change corresponding to a monotonic function of temperature which is a linear approximation of the electrical resistance as a function of temperature.