On
a pound-per-pound basis, carbon nanotube-based fibers invented at Rice
University have greater capacity to carry electrical current than copper
cables of the same mass, according to new research.
While individual nanotubes are capable of transmitting nearly 1,000
times more current than copper, the same tubes coalesced into a fiber
using other technologies fail long before reaching that capacity.
But a series of tests at Rice showed the wet-spun carbon nanotube
fiber still handily beat copper, carrying up to four times as much
current as a copper wire of the same mass.
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