中国物理B ›› 2020, Vol. 29 ›› Issue (2): 25203-025203.doi: 10.1088/1674-1056/ab6109

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

Directional motion of dust particles at different gear structuresin a plasma

Chao-Xing Dai(戴超星), Chao Song(宋超), Zhi-Xiang Zhou(周志向), Wen-Tao Sun(孙文涛), Zhi-Qiang Guo(郭志强), Fu-Cheng Liu(刘富成), Ya-Feng He(贺亚峰)   

  1. Hebei Key Laboratory of Optic-electronic Information Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
  • 收稿日期:2019-08-21 修回日期:2019-10-29 出版日期:2020-02-05 发布日期:2020-02-05
  • 通讯作者: Fu-Cheng Liu, Ya-Feng He E-mail:hdlfc@hbu.edu.cn;heyf@hbu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11975089), the Program for National Defense Science and Technology Innovation Special Zone of China, and the Program for Young Top-Notch Talents of Hebei Province of China.

Directional motion of dust particles at different gear structuresin a plasma

Chao-Xing Dai(戴超星), Chao Song(宋超), Zhi-Xiang Zhou(周志向), Wen-Tao Sun(孙文涛), Zhi-Qiang Guo(郭志强), Fu-Cheng Liu(刘富成), Ya-Feng He(贺亚峰)   

  1. Hebei Key Laboratory of Optic-electronic Information Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
  • Received:2019-08-21 Revised:2019-10-29 Online:2020-02-05 Published:2020-02-05
  • Contact: Fu-Cheng Liu, Ya-Feng He E-mail:hdlfc@hbu.edu.cn;heyf@hbu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11975089), the Program for National Defense Science and Technology Innovation Special Zone of China, and the Program for Young Top-Notch Talents of Hebei Province of China.

摘要: Directional motion of dust particles in a dusty plasma ratchet is observed experimentally. The dusty plasma ratchet consists of two concentric gears with asymmetric sawtooth. It is found that the sawtooth number affects the directional motion of dust particles along the saw channel. With the increase of the sawtooth number, the particle velocity increases firstly and then decreases, and there is an optimum number of the sawtooth which could induce fast rotation of dust particles. The velocities of dust particles change as they are flowing along the saw channel. We also explore the force acting on the dust particle experimentally.

关键词: dusty plasma, ratchet

Abstract: Directional motion of dust particles in a dusty plasma ratchet is observed experimentally. The dusty plasma ratchet consists of two concentric gears with asymmetric sawtooth. It is found that the sawtooth number affects the directional motion of dust particles along the saw channel. With the increase of the sawtooth number, the particle velocity increases firstly and then decreases, and there is an optimum number of the sawtooth which could induce fast rotation of dust particles. The velocities of dust particles change as they are flowing along the saw channel. We also explore the force acting on the dust particle experimentally.

Key words: dusty plasma, ratchet

中图分类号:  (Dusty or complex plasmas; plasma crystals)

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