Influence of ion flow on structure of monolayer crystal

The structure of the dusty crystal is studied by Langevin molecular dynamics simulation when the influence of ion flow is taken into account. The “Yukawa/point-wake” model is used to describe the particle-particle interaction and particle-wake interaction in the dust system. The particles arrange themselves compactly and orderly in the horizontal direction and present a highly ordered structure under some conditions. The formed dusty crystal is quasi two-dimensional but presents a “bowl” shaped structure. The results are helpful in understanding the structure of dusty crystal in the presence of ion flow in the dusty plasma system.