Abstract Using a dusty plasma ratchet, one can realize the rectification of charged dust particle in a plasma. To obtain the ratchet potential dominating the rectification, here we perform quantitative simulations based on a two-dimensional fluid model of capacitively coupled plasma. Plasma parameters are firstly calculated in two typical cross sections of the dusty plasma ratchet which cut vertically the saw channel at different azimuthal positions. The balance positions of charged dust particle in the two cross sections then can be found exactly. The electric potentials at the two balance positions have different values. Using interpolation in term of a double-sine function from previous experimental measurement, an asymmetrical ratchet potential along the saw channel is finally obtained. The asymmetrical orientation of the ratchet potential depends on discharge conditions. Quantitative simulations further reproduce our previous experimental phenomena such as the rectification of dust particle in the dusty plasma ratchet.
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11975089 and 11875014), the Interdisciplinary Research Program of Natural Science of Hebei University (Grant No. DXK202010), and the Hebei Natural Science Fund (Grant Nos. A2021201003 and A2021201010).
Corresponding Authors:
Fu-Cheng Liu, Ya-Feng He
E-mail: hdlfc@hbu.edu.cn;heyf@hbu.edu.cn
Cite this article:
Shuo Wang(王硕), Ning Zhang(张宁), Shun-Xin Zhang(张顺欣), Miao Tian(田淼), Ya-Wen Cai(蔡雅文), Wei-Li Fan(范伟丽), Fu-Cheng Liu(刘富成), and Ya-Feng He(贺亚峰) Quantitative simulations of ratchet potential in a dusty plasma ratchet 2022 Chin. Phys. B 31 065202
[1] Feynman R P, Leighton R B and Sands M 1963 The Feynman Lectures on Physics (Reading, MA: Addison-Wesley) Vol. I [2] Hänggi P and Marchesoni F 2009 Rev. Mod. Phys.81 387 [3] Reimann P 2002 Phys. Rep.361 57 [4] Drexler C, Tarasenko S A, Olbrich P et al. 2013 Nat. Nanotech.8 104 [5] Salger T, Kling S, Hecking T et al. 2009 Science326 1241 [6] Grossert C, Leder M, Denisov S et al. 2016 Nat. Commun.7 10440 [7] Silva C C de S, Van de Vondel J, Morelle M et al. 2006 Nature440 651 [8] Arzola A V, Volke-Sepúlveda K and Mateos J L 2011 Phys. Rev. Lett.106 168104 [9] Roeling E M, Germs W C, Smalbrugge B et al. 2011 Nat. Mater.10 51 [10] Matthias S and Müller F 2003 Nature424 53 [11] He Y F, Ai B Q, Dai C X et al. 2020 Phys. Rev. Lett.124 075001 [12] Dai C X, Song C, Zhou Z X et al. 2020 Chin. Phys. B29 025203 [13] COMSOL Multiphysics version 5.3a, www.comsol.com
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
