Collection of Particles on Cold Surfaces: A Review
Xiaoyu Zhang, Zongwei Gan, Yuzhong Li
Abstract
Particles in gas always have a tendency to move upward and be collected on cold surfaces. This behavior, which has resulted from the interaction of several mechanisms, including Brownian diffusion, inertial impaction, interception, thermophoresis, and diffusiophoresis, is complex. These mechanisms have been previously investigated profoundly. However, a systematic summary is scarce, and inconsistent statements and misunderstandings about these mechanisms have been observed in previous works. To understand the behavior of particle collection on cold surfaces well, the status of these mechanisms has been reviewed, and a mechanism coordinator chart has been established in this paper. Meanwhile, the discrimination of diffusiophoresis in different fields has been analyzed. The research status of the behavior of particle collection on cold surfaces in three types of scenarios has been introduced. Finally, future research directions concerning this topic have been suggested.