Journal
THIN SOLID FILMS
Volume 515, Issue 23, Pages 8356-8359Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2007.03.034
Keywords
In2O3; nanowires; atomic structure; gas sensors
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Thin and densely packed In2O3 nanowires have been synthesised on alumina substrates via transport and condensation method, starting from nanoparticles of indium or palladium as catalysts for the condensation process. Indium catalyst promoted wires growth according to vapour-solid (VS) mechanism, while palladium catalyst leads to wires formation based on vapour-liquid-solid (VLS) condensation. Electron microscopy and related diffraction analysis demonstrated that the wires are monocrystalline, with atomically sharp termination of the lateral sides, and are free from extended defects. The sensing properties of nanowires bundles have been tested to acetone using the flow through technique in the temperature range between 100 and 500 degrees C. (C) 2007 Elsevier B.V. All rights reserved.
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