论文标题
有效的流体动力半径不是常数
The effective hydrodynamic radius is not a constant
论文作者
论文摘要
通常假定有效的流体动力半径是通过其变体测试Stokes-Einstein关系的常数。我们已经使用正苯基和KOB-Andersen模型进行了分子动力学模拟，以检查假设，并发现有效的流体动力半径不是恒定的，但随着温度降低而降低。 Stokes-Einstein关系的变体未建立，但是Stokes-Instein关系通过考虑有效的水动力半径的变化是有效的。我们建议在使用变体测试Stokes-Einstein关系时认真评估假设。
The effective hydrodynamic radius is usually assumed to be a constant in testing the Stokes-Einstein relation by its variants. We have performed molecular dynamics simulations with ortho-terphenyl and Kob-Andersen model to examine the assumption and found the effective hydrodynamic radius is not a constant but decreases with decreasing temperature. The variant of Stokes-Einstein relation is not established but Stokes-Einstein relation is valid by considering the changes of the effective hydrodynamic radius. We propose the assumption should be seriously evaluated when using variants to test Stokes-Einstein relation.
