Large-scale "surface-programmed assembly" of pristine vanadium oxide nanowire-based devices

A method, surface-programmed assembly, for high-precision assembly and alignment of a large number of pristine V₂O₅ nanowires on solid substrates, was reported. Positively charged surface molecualr patterns are utilized to direct the assembly of negatively charged nanowires on various surfaces including Au and Si₂. Using the method, the fabrication of a large number of nanowire-based circuit structures was demonstrated and their functions were confirmed. V₂O₅ nanowires with a specific length can be prepared by mixing ammonium meta-vanadate and acidic ion-exchange resin keeping the misture for a certain time period. .