论文标题
准固定硬球流体的静态特性
Static properties of quasi-confined hard-sphere fluids
论文作者
论文摘要
限制的流体由于分层和局部包装而显示出复杂的行为。在这里，我们通过将硬球液限制在圆柱体的表面上来消除这些效果，因此圆周仅在几个颗粒直径上延伸。我们将计算机模拟中测量的静态结构因子和压力与液态状态理论中的Percus-Yevick闭合进行了比较。静态因子峰的非单调演化和压力在限制长度变化后观察到压力，类似于两个板之间限制的液体。这表明密度曲线和粒子相关性可能不会在实际的限制液体中本质上连接。
Confined fluids display complex behavior due to layering and local packing. Here, we disentangle these effects by confining a hard-sphere fluid to the surface of a cylinder, such the circumference extends only over a few particle diameters. We compare the static structure factor and the pressure measured in computer simulations to the Percus-Yevick closure in liquid state theory. A non-monotonic evolution of the static-structure-factor peak and the pressure is observed upon variation of the confining length, similar to a liquid confined between two plates. This indicates that the density profile and the particle correlations may not be intrinsically connected in real confined liquids.
