Journal
APPLIED PHYSICS LETTERS
Volume 88, Issue 10, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2184990
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Bi nanotubes embedded in anodic alumina membranes were fabricated by pulsed electrodeposition. Scanning electron microscope, x-ray diffraction, and high-resolution transmission electron microscope analyses revealed that the Bi nanotubes are highly oriented and single crystalline. Electronic transport measurements proved that there is a metal-semiconductor transition of Bi nanotube arrays with the decrease of the wall thickness of the nanotubes, and this transition depends only on the wall thickness and is independent of the diameter of the nanotubes. The quantum confinement effect is believed to play an important role in determining transport properties. The Bi nanotubes may find applications in thermoelectric nanodevices. (c) 2006 American Institute of Physics.
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