Westfälische Wilhelms-Universität Münster, Institut für Physikalische Chemie, Corrensstraße 28/30, 48149 Münster, Germany.
J Chem Phys. 2013 Mar 28;138(12):12A518. doi: 10.1063/1.4772627.
Molecular dynamics simulations of a glass-forming model system are performed under application of a microrheological perturbation on a tagged particle. The trajectory of that particle is studied in its underlying potential energy landscape. Discretization of the configuration space is achieved via a metabasin analysis. The linear and nonlinear responses of drift and diffusive behavior can be interpreted and analyzed in terms of a continuous time random walk. In this way, the physical origin of linear and nonlinear response can be identified. Critical forces are determined and compared with predictions from literature.
对模型体系进行玻璃化转变的分子动力学模拟，在标记粒子上施加微流变学摄动。研究该粒子在其潜在的势能景观中的轨迹。通过代谢池分析对构形空间进行离散化。可以根据连续时间随机行走来解释和分析漂移和扩散行为的线性和非线性响应。通过这种方式，可以确定线性和非线性响应的物理起源。确定临界力并与文献中的预测进行比较。
