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Large-area, vertically aligned silicon nanowire arrays have been successfully fabricated on (001)Si substrates via the redox reactions between silicon and silver ions in the aqueous solution of AgNO3/HF. From SEM and TEM observations, the typical widths of the synthesized SiNWs are in the range of 30-200 nm. The lengths of SiNWs could be tuned from several to tens of micrometers by adjusting the reaction...
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