Center for Nanochemistry, Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
Nano Lett. 2011 May 11;11(5):2173-7. doi: 10.1021/nl200843g. Epub 2011 Apr 4.
We present an approach for measuring the water flow rate through individual ultralong carbon nanotubes (CNTs) using field effect transistors array defined on individual tubes. Our work exhibits a rate enhancement of 882-51 and a slip length of 53-8 nm for CNTs with diameters of 0.81-1.59 nm. We also found that the enhancement factor does not increase monotonically with shrinking tube diameter and there exists a discontinuous region around 0.98-1.10 nm. We believe that these single-tube level results would help understand the intrinsic nanofluidics of water in CNTs.
我们提出了一种使用单个管上定义的场效应晶体管阵列来测量通过单个超长碳纳米管 (CNT) 的水流量的方法。我们的工作显示，对于直径为 0.81-1.59nm 的 CNT，速率增强为 882-51，滑移长度为 53-8nm。我们还发现，增强因子不会随着管直径的缩小而单调增加，在 0.98-1.10nm 左右存在一个不连续区域。我们相信这些单管水平的结果将有助于理解 CNT 中水分子的内在纳流。
