Fig. 3

Dependence of the thermal and electrical conductivities on the applied current and temperature for a fixed SWCNT amount (four layers) and treatment time (1 min). a Map of the fractional increase in thermal and electrical conductivities as a function of current density and temperature. As discussed in the text, the fractional improvement is the same, which makes the simultaneous mapping of both properties possible. b Thermal (upper) and electrical (lower) conductivity improvement profiles for fixed current density as a function of the applied temperature