中国物理B ›› 2025, Vol. 34 ›› Issue (10): 105203-105203.doi: 10.1088/1674-1056/adf17c
Effect of the confinement on two-dimensional complex plasmas with the shear force
Haoyu Qi(齐颢与)1,2,†, Yang Liu(刘阳)1,3,†, Shaohuang Bian(卞少皇)4, Runing Liang(梁儒宁)1, Dan Zhang(张丹)1, and Feng Huang(黄峰)1,‡
- 1 College of Science, China Agricultural University, Beijing 100083, China;
2 Office for Science and Technology, Northwest University, Xi'an 710069, China;
3 Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universit?t, D-24098 Kiel, Germany;
4 College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China
Effect of the confinement on two-dimensional complex plasmas with the shear force
Haoyu Qi(齐颢与)1,2,†, Yang Liu(刘阳)1,3,†, Shaohuang Bian(卞少皇)4, Runing Liang(梁儒宁)1, Dan Zhang(张丹)1, and Feng Huang(黄峰)1,‡
- 1 College of Science, China Agricultural University, Beijing 100083, China;
2 Office for Science and Technology, Northwest University, Xi'an 710069, China;
3 Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universit?t, D-24098 Kiel, Germany;
4 College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China
摘要： Langevin molecular dynamics simulations reveal the impact of confinement strength on the structure and dynamics of a two-dimensional complex plasma under constant shear force. Structural analysis via Voronoi diagrams and the local bond-order parameter $|\varPsi_6|$ shows that stronger confinement enhances hexagonal order and mitigates shear-induced disorder. Dynamical properties, determined by mean-square displacement (MSD) and the velocity autocorrelation function (VACF), indicate that the shear-induced superdiffusion weakens with increasing confinement strength. The entropy change ($\Delta{S}$) shows that strong confinement ($\omega > 1$) balances particle dynamics between shear and shear-free regions, thereby stabilizing the system. These findings highlight the interplay between confinement and shear force.
中图分类号: (Dusty or complex plasmas; plasma crystals)
- 52.27.Lw