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Well-crystallized straight Si nanowires (SiNWs) were successfully prepared in large scale via a facile reaction between NaN 3 and Na 2 SiF 6 at 600°C without using any catalyst. Characterization by X-ray powder diffraction and transmission electron microscopy demonstrates that the as-obtained product is pure-phase cubic SiNWs with diameters of 40nm or so, and lengths of several...
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