The Ultimate Strength of Carbon Nanotubes

SSCP 9710489 Bernholc这项研究的目的是探索影响纳米管材料的最终机械性能和极限的基本化学和物理现象。理论方法和超级计算机的最新进展使模拟破裂和破坏机制成为可能。在将要进行的模拟中，由数百个原子组成的纳米管碎片的长度将缓慢增加，直到破裂。这些模拟的结果将确定失效的原子和电子机制，并提供对纳米管强度及其温度依赖性的可靠定量估计。%新证据表明，碳纳米管是已知的最坚固的材料，有可能在许多对美国经济至关重要的领域实现独特的应用。这项研究将包括使用微操作器直接测量纳米管绳的强度。研究结果将为纳米管基超强材料及其应用的研究和开发提供基础。

SSCP 9710489 Bernholc The objective of this study is to explore fundamental chemical and physical phenomena that influence the ultimate mechanical properties and limits of nanotube-based materials. Recent advances in theoretical methods and supercomputers make simulations of breakage and failure mechanisms feasible. In the simulations to be undertaken, the length of a nanotube fragment consisting of several hundred atoms will be slowly increased until breakage. The results of these simulations will identify atomistic and electronic mechanisms of failure, and provide quantitatively reliable estimates of the strength of nanotubes and their temperature dependence. %%% New evidence suggests that carbon nanotubes are the strongest materials known, potentially enabling unique applications in many areas critical to the U.S. economy. This research will involve direct measurements of the strength of nanotube ropes using micromanipulators. The results will provide the foundation for research and development of nanotube based superstrong materials and their applications ***