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Oxygen Desorption from Single-Walled Carbon Nanotubes by Camera Flash

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Abstract:

In this paper, we report that the electrical conductance of single-walled carbon nanotubes networks decreases when the nanotubes are illuminated by camera flash in high vacuum up to 10−6 Torr. The decreasing conductance shows step-like characteristics at each illumination. The magnitude of conductance change step reduces gradually after each illumination; finally, the conductance reaches saturation. Controlled experiments in air, oxygen and nitrogen gas indicate that mechanism for these observations is photodesorption of molecular oxygen from singled-walled carbon nanotubes.

Keywords: ILLUMINATION; PHOTODESORPTION; SINGLE-WALLED CARBON NANOTUBE

Document Type: Research Article

DOI: https://doi.org/10.1166/jnn.2009.C155

Publication date: 2009-02-01

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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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