Super-Arrhenius behavior of molecular glass formers

被引：10
|
作者：
Singh, Ankit [1 ]
Singh, Yashwant [1 ]
机构：
[1] Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India
来源：
PHYSICAL REVIEW E | 2019年 / 99卷 / 03期
关键词：
VISCOUS-LIQUIDS; HARD; SUSPENSIONS; RELAXATION; DEPENDENCE; TRANSITION; VISCOSITY; DYNAMICS;
D O I：
10.1103/PhysRevE.99.030101
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
A theory is developed to calculate values of the potential-energy barriers to structural relaxation in molecular glass formers from the data of static pair-correlation function. The barrier height is shown to increase due to an increase in the number of "stable bonds" a particle forms with its neighbors and the energy of each bond as liquids move deeper into the supercooled (supercompressed) region. We present results for a system of hard spheres and compare calculated values of the structural relaxation time with experimental and simulation results.
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页数：4
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