We report the direct synthesis of strong, highly conducting, and transparent single-walled carbon nanotube (SWNT) films. Systematically, tests reveal that the directly synthesized films have superior electrical and mechanical properties compared with the films made from a solution-based filtration process: the electrical conductivity is over 2000 S/cm and the strength can reach 360 MPa. These values are both enhanced by more than 1 order. We attribute these intriguing properties to the good and long interbundle connections. Moreover, by the help of an extrapolated Weibull theory, we verify the feasibility of reducing the interbundle slip by utilizing the long-range intertube friction and estimate the ultimate strength of macroscale SWNTs without binding agent.
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机译：我们报告了强，高导电性和透明的单壁碳纳米管（SWNT）薄膜的直接合成。系统地测试表明，与通过溶液过滤工艺制成的薄膜相比，直接合成的薄膜具有优异的电气和机械性能：电导率超过2000 S / cm，强度可以达到360 MPa。这些值都增加了1个以上的量级。我们将这些有趣的属性归因于良好的和较长的束间连接。此外，借助外推威布尔理论，我们验证了利用长管间摩擦力降低束缚滑移的可行性，并估计了无粘合剂的大型单壁碳纳米管的极限强度。
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