Controlled crystallinity and crystallographic orientation of Cu nanowires fabricated inion-track templates

Abstract

The hallmark of materials science is the ability to tailor the structures of a givenmaterial to provide a desired response. In this work, the structures involvingcrystallinity and crystallographic orientation of Cu nanowires electrochemicallyfabricated in ion-track templates have been investigated as a function of fabricationcondition. Both single crystalline and polycrystalline nanowires were obtained byadjusting applied voltages and temperatures of electrochemical deposition. Theanti-Hall–Petch effect was experimentally evidenced in the polycrystalline nanowires.The dominant crystallographic orientations of wires along [111], [100], or [110]directions were obtained by selecting electrochemical deposition conditions, i.e.,H2SO4 concentration in electrolyte, applied voltage, and electrodeposition temperature.