Abstract
Standing fibrous carbon nanostructures have been synthesized from graphite substrates without a catalyst using pulsed laser deposition (PLD). Sharpened carbon nanostructures with a diameter of 2–10 nm, a length of 30–180 nm, and a tip angle of 25° were grown on the substrate surface. Transmission electron microscopy revealed that the sharpened carbon nanostructure consists of a few graphite sheets with a good crystallinity. At a low temperature of 500 °C, short and conical carbon nanostructures, which are similar to carbon nanohorns, were densely grown at the surface of the graphite substrate.
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