Ultra-Thin Double-Walled Carbon Nanotubes A Novel Nanocontainer for Preparing Atomic Wires

Details Ultra-Thin Double-Walled Carbon Nanotubes A Novel Nanocontainer for Preparing Atomic Wires Ultra-Thin Double-Walled Carbon Nanotubes A Novel Nanocontainer for Preparing Atomic Wires

2011-05-14

arxiv.org/abs/1105.2855v1

Physics

Condensed Matter

Materials Science

8 pages,5 figures,1 table

Scientific paper

10.1007/s12274-011-0132-y

Double-walled carbon nanotubes (DWCNTs) with high graphitization have been synthesized by hydrogen arc discharge. The obtained DWCNTs have a narrow distribution of diameters of both the inner and outer tubes, and more than half of the DWCNTs have inner diameters in the range 0.6-1.0 nm. Field electron emission from a DWCNT cathode to an anode has been measured, and the emission current density of DWCNTs reached 1 A/cm2 at an applied field of about 4.3 V/{\mu}m. After high-temperature treatment of DWCNTs, long linear carbon chains (C-chains) can be grown inside the ultra-thin DWCNTs to form a novel C-chain@DWCNT nanostructure, showing that these ultra-thin DWCNTs are an appropriate nanocontainer for preparing truly one-dimensional nanostructures with one-atom-diameter.

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