Directional motion of dust particles at different gear structures in a plasma

被引：3

作者：

Dai, Chao-Xing ^{[1
]}

Song, Chao ^{[1
]}

Zhou, Zhi-Xiang ^{[1
]}

Sun, Wen-Tao ^{[1
]}

Guo, Zhi-Qiang ^{[1
]}

Liu, Fu-Cheng ^{[1
]}

He, Ya-Feng ^{[1
]}

机构：

[1] Hebei Univ, Coll Phys Sci & Technol, Hebei Key Lab Opt Elect Informat Mat, Baoding 071002, Peoples R China

来源：

CHINESE PHYSICS B | 2020年 / 29卷 / 02期

基金：

中国国家自然科学基金;

关键词：

dusty plasma; ratchet;

D O I：

10.1088/1674-1056/ab6109

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

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.

引用

页数：4

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