Bandaru P R, Daraio C, Jin S, Rao A M
Materials Science Program, Department of Mechanical Engineering, University of California, San Diego, La Jolla, California 92093-0411, USA.
Nat Mater. 2005 Sep;4(9):663-6. doi: 10.1038/nmat1450. Epub 2005 Aug 14.
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. This is the first time that such switching and logic functionalities have been experimentally demonstrated in Y-junction nanotubes without the need for an external gate. A class of nanoelectronic architecture and functionality, which extends well beyond conventional field-effect transistor technologies, is now possible.
基于碳纳米管的电子器件作为分子电子技术中硅基器件的纳米级替代品具有巨大潜力。在此，我们展示了Y型结碳纳米管形态中显著的电开关行为的证据。我们观察到电流从导通状态到截止状态的突然调制，推测这是由缺陷和结的拓扑结构介导的。Y型结三个分支中电子电流的相互作用被证明是一种潜在新逻辑器件的基础。这是首次在无需外部栅极的Y型结纳米管中通过实验证明这种开关和逻辑功能。现在，一类超越传统场效应晶体管技术的纳米电子架构和功能成为可能。
