椭球形粒子扩散动力学的研究进展

Research Progress on Diffusion Dynamics of Ellipsoidal Particles

椭球形粒子作为一类重要的各向异性粒子,在生物、化工以及材料等领域有着广泛的应用。对椭球形粒子的扩散动力学进行深入地研究,不仅可以增进人们对各向异性粒子扩散动力学中基本科学问题的理解,而且可以为含各向异性粒子材料的设计与加工提供理论依据。因此,椭球形粒子的扩散问题一直是粒子扩散研究的焦点。虽然椭球形粒子扩散动力学的研究已经有一百多年的历史,其相关理论、实验和模拟研究工作很多,并取得了较大的进展,但是,系统的综述性文章相对较少。本文系统地总结了椭球形粒子扩散动力学的相关工作,包括:不同流体力学边界条件下椭球形粒子的扩散动力学和平动与转动扩散的耦合行为等。此外,本文还分析了椭球形粒子扩散动力学领域存在的关键科学问题,并对该领域研究方向进行了展望。

As one of the important anisotropic particles,ellipsoidal particles have widespread range of applications in biology,chemical engineering and materials. Further research on the diffusion dynamics of ellipsoidal particles not only contributes to our understanding of the diffusion dynamics of anisotropic particles,but also provides theoretical guidance for the design of materials containing anisotropic particles. Therefore,the diffusion dynamics of ellipsoidal particles has been a research focus in the diffusion of particles over 100 years and extensive theoretical,experimental and simulation studies have been conducted. Although significant progress has been made,systemic reviews on this field are rarely published up to now. In this review,we summarize the diffusion dynamics of ellipsoidal particles,including the relationship between size and diffusion properties of ellipsoidal particles under different hydrodynamic boundary conditions and the coupling effect of translational and rotational motion. Furthermore,we analyze the existing problems in this field and discuss the research trends briefly.