Given an increasing trend of average diameter versus working voltage 14 , 15 and the effect of an extender cap on working voltage 16 , the resolution of PAN fiber can be improved to near-nanometer scale using the touch and retract mode of the droplet at the ejector needle tip and a rotating drum in NFES 17 – 19 .
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Continuously superior-strong carbon nanofibers by additive nanostructuring and carbonization of polyacrylonitrile jetting.
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