Directional motion of dust particles at different gear structures in a plasma
Dai Chao-Xing, Song Chao, Zhou Zhi-Xiang, Sun Wen-Tao, Guo Zhi-Qiang, Liu Fu-Cheng, He Ya-Feng
       

Dependence of the ratio of the maximum to minimum angular velocities on the sawtooth number. Gas pressure: 30 Pa, RF power: 30 W.