Arc-discharge synthesized multiwalled carbon nanotubes (AD-MWNT), or related MWNTs, exhibit a good quality compared to the more common type of MWNT synthesized by catalytic chemical vapor deposition methods. Yet experimental measurements on these are rather few and typically have not correlated data from different measurement techniques. Here, the authors report Raman spectroscopy, scanning probe microscopy, conductivity measurements, and force microscopy on single AD-MWNTs. The results demonstrate the high quality of AD-MWNTs and are compatible with the view of them as the best approximation of MWNTs as an assembly of defect-free concentric individual single-walled carbon nanotubes. The authors also demonstrate conductance measurements over a step on the surface of an AD-MWNT, which is due to an abruptly broken outer layer(s), whereby the interlayer resistance is measured.

中文翻译：

---

用多种测量技术探测单个电弧放电合成的多壁碳纳米管

与通过催化化学气相沉积方法合成的更常见类型的 MWNT 相比，电弧放电合成的多壁碳纳米管 (AD-MWNT) 或相关的 MWNT 表现出良好的质量。然而，关于这些的实验测量相当少，并且通常没有来自不同测量技术的相关数据。在这里，作者报告了单个 AD-MWNT 的拉曼光谱、扫描探针显微镜、电导率测量和力显微镜。结果证明了 AD-MWNT 的高质量，并且与将它们视为 MWNT 作为无缺陷同心单个单壁碳纳米管组件的最佳近似的观点相一致。作者还展示了 AD-MWNT 表面台阶上的电导测量，这是由于外层突然破裂，