论文标题
玻璃过渡附近的准夹层胶体硬球液体的动态特性
Dynamic properties of quasi-confined colloidal hard-sphere liquids near the glass transition
论文作者
论文摘要
通过考虑准限制的液体,可以分解由于分层和局部填料之间的竞争而产生的约束流体的复杂行为,在这种液体沿着限制方向恢复转化不变性的情况下,在该液体上进行了周期性边界条件。该系统提供了一种研究限制和本地顺序相关长度量表的相互作用的方法。我们为准夹层液体提供了玻璃转变(MCT)的模式耦合理论,并阐述了数值实现的有效方法。将MCT中的非连接性参数与硬球体流体的计算机模拟结果进行了比较。我们评估非平衡状态图并研究集体中间散射函数。对于这两种方法,都观察到非单调行为,具体取决于限制长度。
The complex behavior of confined fluids arising due to a competition between layering and local packing can be disentangled by considering quasi-confined liquids, where periodic boundary conditions along the confining direction restore translational invariance. This system provides a means to investigate the interplay of the relevant length scales of the confinement and the local order. We provide a mode-coupling theory of the glass transition (MCT) for quasi-confined liquids and elaborate an efficient method for the numerical implementation. The nonergodicity parameters in MCT are compared to computer-simulation results for a hard-sphere fluid. We evaluate the nonequilibrium-state diagram and investigate the collective intermediate scattering function. For both methods, nonmonotonic behavior depending on the confinement length is observed.