Identifying Individual Single-Walled and Double-Walled Carbon Nanotubes by Atomic Force Microscopy
Identifying Individual Single-Walled and Double-Walled Carbon Nanotubes by Atomic Force Microscopy
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DOI：
10.1021/nl801106p
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发表时间：
2008-11-01
期刊：
影响因子：
10.8
通讯作者：
Minot, Ethan D.
中科院分区：
文献类型：
--
作者：
DeBorde, Tristan;Joiner, J. Caleb;Minot, Ethan D.
我们发现，形成碳纳米管的同心石墨烯圆柱体的数量可以通过挤压原子力显微镜尖端和硅衬底之间的管来确定。单壁纳米管(双壁纳米管)的压缩高度大约是石墨层间间距的两(四)倍。测量的压缩力与预测的石墨烯弯曲模数一致，并为识别单个单壁和双壁纳米管提供了一个力学信号。
We show that the number of concentric graphene cylinders forming a carbon nanotube can be found by squeezing the tube between an atomic force microscope tip and a silicon substrate. The compressed height of a single-walled nanotube (double-walled nanotube) is approximately two (four) times the interlayer spacing of graphite. Measured compression forces are consistent with the predicted bending modulus of graphene and provide a mechanical signature for identifying individual single-walled and double-walled nanotubes.