论文标题
可渗透夹杂物的主动渗透压
Active osmotic-like pressure on permeable inclusions
论文作者
论文摘要
我们使用标准的最小活性布朗模型来研究由固定空心夹杂物上的活性流体产生的渗透样有效压力。这些夹杂物被渗透性（尽管不屈服）膜所包围，并且内含物的内部和外部区域具有不同的粒子运动强度。我们考虑矩形和磁盘状的包含物，并分析各种系统参数的影响，例如活性颗粒之间排除的体积相互作用，膜的硬度和活动颗粒密度对封闭膜上产生的有效压力。我们专注于中间至高运动强度的范围，并分析稳定状态下的有效压力。我们对包容性内部和外部区域产生的活性压力的发现表明，由于活性颗粒的积累相对较高，该区域的压力较高。
We use a standard minimal active Brownian model to investigate the osmotic-like effective pressure generated by active fluids on fixed hollow inclusions. These inclusions are enclosed by a permeable (albeit nonflexible) membrane, and the interior and exterior regions of the inclusions have different particle motility strengths. We consider both rectangular and disklike inclusions and analyze the effects of various system parameters, such as excluded volume interaction between active particles, hardness of membrane and active particle density, on the effective pressure produced on the enclosing membrane. We focus on the range of intermediate to high motility strengths and analyze the effective pressure in the steady state. Our findings for the active pressure produced in the interior and exterior regions of the inclusion indicate that the pressure is higher in the region with lower motility due to the relatively stronger accumulation of active particles.
