Current induced polycrystalline-to-crystalline transformation in vanadium dioxide nanowires.

ABSTRACT: Vanadium dioxide (VO₂) exhibits a reversible insulator-metal phase transition that is of significant interest in energy-efficient nanoelectronic and nanophotonic devices. In these applications, crystalline materials are usually preferred for their superior electrical transport characteristics as well as spatial homogeneity and low surface roughness over the device area for reduced scattering. Here, we show applied electrical currents can induce a permanent reconfiguration of polycrystalline VO₂ nanowires into crystalline nanowires, resulting in a dramatically reduced hysteresis across the phase transition and reduced resistivity. Low currents below 3 mA were sufficient to cause the local temperature in the VO₂ to reach about 1780 K to activate the irreversi

SUBMITTER: Jeong J 

PROVIDER: S-EPMC5125010 | biostudies-literature | 2016 Nov

REPOSITORIES: biostudies-literature