Table 1.

Characterization of three, four and five CNT-layer membranes comparing the temperatures achieved as a function of membrane thickness (number of layers) and the functionalization where hydrophobic refers to the membrane in its pristine state while hydrophilic refers to a similar membrane after plasma functionalization.

CNT layers	Type of CNTs	Current (mA)	Power (W)	Temp (°C)
3	Hydrophobic	79	1.11	94
	Hydrophilic	74	1.04	74
4	Hydrophobic	125	1.75	108
	Hydrophilic	89	1.25	87
5	Hydrophobic	121	1.69	132

Note: Current between the electrodes and power consumed increased with the number of layers.