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    • 6. 发明申请
    • NANOTUBES AND DEVICES FABRICATED THEREFROM
    • US20090283751A1
    • 2009-11-19
    • US12335430
    • 2008-12-15
    • Peidong YangArunava MajumdarRong FanRohit Karnik
    • Peidong YangArunava MajumdarRong FanRohit Karnik
    • H01L29/66G01N27/00
    • H01L29/775B82Y10/00G01N27/4145G01N27/4146H01L29/0673
    • Nanofluidic devices incorporating inorganic nanotubes fluidly coupled to channels or nanopores for supplying a fluid containing chemical or biochemical species are described. In one aspect, two channels are fluidly interconnected with a nanotube. Electrodes on opposing sides of the nanotube establish electrical contact with the fluid therein. A bias current is passed between the electrodes through the fluid, and current changes are detected to ascertain the passage of select molecules, such as DNA, through the nanotube. In another aspect, a gate electrode is located proximal the nanotube between the two electrodes thus forming a nanofluidic transistor. The voltage applied to the gate controls the passage of ionic species through the nanotube selected as either or both ionic polarities. In either of these aspects the nanotube can be modified, or functionalized, to control the selectivity of detection or passage.
    • 描述了纳入流体耦合到通道或纳米孔的无机纳米管的纳米流体装置,用于提供含有化学或生化物质的流体。 在一个方面,两个通道与纳米管流体互连。 在纳米管的相对侧上的电极与其中的流体建立电接触。 通过流体在电极之间通过偏置电流,并且检测电流变化以确定通过纳米管的选择分子例如DNA的通过。 在另一方面,栅极位于两个电极之间的纳米管附近,从而形成纳米流体晶体管。 施加到栅极的电压控制离子物质通过通过选择为离子极性之一或两者的纳米管的通过。 在这些方面的任一个中,可以修饰或官能化纳米管以控制检测或通过的选择性。