Abstract Floating catalyst chemical vapor deposition (FCCVD) can produce buckypaper, a kind of CNT film, at large-scale with low cost. However, individual CNTs in the buckypaper are mostly randomly oriented, which significantly limits their electrical and mechanical properties. Here we report an innovative approach, water-assisted shear stretching (WASS), which can significantly improve CNT alignments and consequently enhance the electrical and mechanical properties. In addition, we define a unique “alignment factor” to quantify the alignment degree, and to estimate the effect of alignment on the mechanical and electrical properties of CNT assemblies. The high mechanical strength and excellent electrical conductivity of the WASS-processed buckypaper enhance their potential for applications in new electronic technologies and high-strength lightweight aerospace structures.

中文翻译：

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一种通过水辅助剪切拉伸排列碳纳米管的新方法

摘要 浮动催化剂化学气相沉积（FCCVD）可以低成本大规模生产巴克纸，一种碳纳米管薄膜。然而，巴克纸中的单个碳纳米管大多是随机取向的，这极大地限制了它们的电气和机械性能。在这里，我们报告了一种创新方法，水辅助剪切拉伸（WASS），它可以显着改善 CNT 排列，从而增强电气和机械性能。此外，我们定义了一个独特的“对齐因子”来量化对齐程度，并估计对齐对 CNT 组件的机械和电气性能的影响。