Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10653775 | Solid State Communications | 2005 | 5 Pages |
Abstract
A simple method based on the thermal oxidation of Si wafers in presence of a mixture of MgO and graphite powder was developed for large-scale synthesis of very long amorphous silica nanowires. The synthesis was done with and without gold as the catalyst. Almost aligned uniform nanowires with diameters within 60-90Â nm and length up to few hundred micrometers were obtained using gold as the catalyst while bicycle chain like nanowires were obtained in absence of the catalyst. The growth sequence of the nanowires was observed through scanning electron microscope. Both forms of the nanowires emitted blue lights at 414Â nm (3Â eV) under excitation at 250Â nm.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Soumitra Kar, Subhadra Chaudhuri,