Effect of Interparticle Attraction on a Complex Plasma With a Directional Flow

In this article, the effect of attraction between particles on a 2-D complex plasma system by applying a local directional flow is investigated by Langevin molecular dynamics simulation. The structures and dynamics of the system are studied. The steady-state particle distribution and Voronoi diagram are used to represent the system structural property. The particle speed statistical distribution, mean square displacement and trajectories are used to investigate the system dynamical property. The particles' kinetic energy evolves as the time under different interparticle attractions are compared. The trajectories of individual particles by initially locating inside or outside the flow are given to show the detailed influence of attraction on different particles at different locations. These results indicate that the system properties can be influenced by different interparticle attractions by considering a directional flow.