The Ultimate Strength of Carbon Nanotubes

碳纳米管的极限强度

• 批准号: 9710489
• 负责人: Jerzy Bernholc
• 金额: $ 5万
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-07-15 至 1998-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9710489&HistoricalAwards=false
• 关键词: Ultimate; Strength; Carbon; Nanotubes

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 ***

SSCP 9710489 Bernholc 本研究的目的是探索影响最终机械性能的基本化学和物理现象， 性能 和 限制 的 纳米管材料。 理论方法的最新进展 而超级计算机使断裂和失效机制的模拟成为可能。 在即将进行的模拟中，由数百个原子组成的纳米管碎片的长度将缓慢增加，直到断裂。 这些模拟的结果将确定失效的原子和电子机制，并提供纳米管强度及其温度依赖性的定量可靠估计。 %新建 有证据表明，碳纳米管是 已知最强的材料， 在对美国经济至关重要的许多领域的独特应用。 这项研究将涉及使用显微操作器直接测量纳米管绳的强度。 结果将为研究提供基础 纳米管基超强材料及其应用的研究与开发 *