论文标题
有效的斑块颗粒在临界流体中的相互作用
Effective Pair Interaction of Patchy Particles in Critical Fluids
论文作者
论文摘要
我们研究了两个浸入二元液体混合物接近其临界点的二元液体混合物中的球形胶体之间的临界卡西米尔相互作用。每个胶体的表面更喜欢一种混合物，除了一个任意大小的圆形斑块，而其他物种则是首选的。对于此类对象，我们在Derjaguin近似中计算了描述临界Casimir电位的缩放函数，并使用它来得出作用在两个胶体上的力和扭矩的所有组件的缩放函数。将结果与可用的实验数据进行比较。此外，得出了电势的缩放函数与力和扭矩的缩放函数之间的一般关系。
We study the critical Casimir interaction between two spherical colloids immersed in a binary liquid mixture close to its critical demixing point. The surface of each colloid prefers one species of the mixture with the exception of a circular patch of arbitrary size, where the other species is preferred. For such objects we calculate, within the Derjaguin approximation, the scaling function describing the critical Casimir potential, and we use it to derive the scaling functions for all components of the forces and torques acting on both colloids. The results are compared with available experimental data. Moreover, the general relation between the scaling function for the potential and the scaling functions for the force and the torque is derived.
