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

Abstract

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/μm. 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.

8 pages,5 figures,1 table

References in corpus (1)

• Electric Field Effect in Atomically Thin Carbon Films

Cited by in corpus (8)

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• Extraction of Linear Carbon Chains Unravels the Role of the Carbon Nanotube Host
• Templated direct growth of ultra-thin double-walled carbon nanotubes
• Oxidation stability of confined linear carbon chains, carbon nanotubes, and graphene nanoribbons as 1D nanocarbons
• Raman and XPS analyses of pristine and annealed N-doped double-walled carbon nanotubes