Novel electrical switching behaviour and logic in carbon nanotube Y-junctions

摘要

Carbon-nanotube-based electronics offers significant potential as a nanoscale alternative to silicon-based devices for molecular electronics technologies.Here,we show evidence for a dramatic electrical switching behaviour in a Y-junction carbon-nanotube morphology.We observe an abrupt modulation of the current from an on- to an off-state,presumably mediated by defects and the topology of the junction.The mutual interaction of the electron currents in the three branches of the Y-junction is shown to be the basis for a potentially new logic device.