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Synthesis and Characterization of Cu Nanotubes and Nanothreads by Electrical Arc Evaporation

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Abstract:

We report the formation and characterization of copper nanostructures, nanotubules and nanothreads, which were obtained by electrical arc evaporation of Cu electrodes under varied conditions of He ambience. Electrical arc evaporation was done with ~10 V and (~50-100 A) DC current. The current was used in a pulse mode. The evaporated material was condensed on a formvarcoated Cu grid mounted on a liquid N2-cooled specimen holder. Transmission electron microscopy was employed to characterize the condensed materials. These investigations revealed that the condensed materials consisted of the mentioned nanostructures. Nanotubes and nanothreads are formed for a He pressure in the chamber corresponding to ~140 and ~500 torr, respectively. Extensive electron microscopic investigations showed that the diameter of the nanotubes varied from ~5 nm to ~50 nm and their length from 2 m to 3 m.

Keywords: ARC EVAPORATION; CU NANOTUBES; NANOTHREADS

Document Type: Short Communication

DOI: http://dx.doi.org/10.1166/jnn.2003.196

Publication date: June 1, 2003

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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