(a) Schematic of the direct spinning process. The liquid feedstock, in which small quantities of ferrocene and thiophene are dissolved, is mixed with hydrogen and injected into the hot zone, where an aerogel of CNTs form. This aerogel is captured and wound out of the hot zone continuously as a fiber or film. (b) SEM image of a fiber. (c) Well-aligned MWNTs within the fiber [23].
