Abstract In the presented work, the features of mechanical stiffness of carbon nanoparticles (nanodiamonds and fullerenes) in a wide range of sizes are considered. The enhancement of nanodiamonds stiffness (comparing to bulk diamond) is studied and explained in the terms of average bond stiffness k 0 . It is shown that k 0 can be useful in the description of various carbon nanostructures and gives reliable estimates of their incompressibility. Moreover, we found that k 0 can be well estimated based only on relaxed atomic geometry.

中文翻译：

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纳米级碳：超高刚度和不可压缩性的明确定义

摘要 在目前的工作中，考虑了各种尺寸的碳纳米粒子（纳米金刚石和富勒烯）的机械刚度特征。纳米金刚石刚度的增强（与大块金刚石相比）被研究和解释为平均键刚度 k 0 。结果表明，k 0 可用于描述各种碳​​纳米结构，并给出其不可压缩性的可靠估计。此外，我们发现仅基于松弛原子几何可以很好地估计 k 0 。