Synthesis of gold-silica composite nanowires through solid-liquid-solid phase growth |
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Authors: | Paulose Maggie Varghese Oomman K Grimes Craig A |
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Affiliation: | Department of Electrical Engineering & Materials Research Institute, 217 Materials Research Laboratory, Pennsylvania State University, University Park, Pennsylvania 16802, USA. |
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Abstract: | Nanoscale wires of silicon oxide, and silicon oxide with embedded gold-silicide nanospheres, are synthesized by heating of a gold-coated silicon wafer at temperatures of 1000 degrees C or above, with the resulting wires having diameters ranging from 30 to 150 nm and lengths of approximately 1 mm. This simple fabrication process should make possible economical bulk production of nanowires. Studies indicate that the growth of these gold-silica composite nanowires occurs directly on the silicon wafer by a solid-liquid-solid mechanism. |
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