Self and collective correlation functions in a gel of tetrahedral patchy particles
Self and collective correlation functions in a gel of tetrahedral patchy particles
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DOI：
10.1080/00268976.2011.609148
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发表时间：
2011-01-01
影响因子：
1.7
通讯作者：
Sciortino, Francesco
中科院分区：
文献类型：
--
作者：
Rovigatti, Lorenzo;Sciortino, Francesco
我们讨论了密集的布朗动力学模拟的一个简单的模型四面体斑片状粒子的最佳网络密度区域的结果。这一选择使我们能够研究在很宽的温度范围内的结构和动力学的演变，而不会遇到任何相分离。在这个模型系统中的动力学的放缓是由渐进的键形成和增加的键寿命。虽然动态逮捕是不同的玻璃情况下，排除体积相互作用占主导地位，所产生的流体的自我和集体相关函数的衰减承担与玻璃系统中观察到的相似之处。
We discuss the results of intensive Brownian dynamics simulations of a simple model of tetrahedral patchy particles in the optimal network density region. This choice allows us to investigate the evolution of the structure and of the dynamics in a wide range of temperatures without encountering any phase separation. The slowing down of the dynamics in this model system is driven by the progressive bond formation and the increasing bond lifetime. Although dynamical arrest is different from the glass case, where excluded volume interactions are dominant, the decay of the self-and collective correlation functions of the resulting fluid bears similarities with that observed in glassy systems.