| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Shear rheology of confined double rings of dust particles in a dusty plasma |
| Miao Tian(田淼)1,†, Jiaqi Li(李佳琪)1,†, Xuebo Yu(于雪波)1, Xue Liu(刘雪)1, Shaopeng Li(李绍鹏)1, Qing Li(李庆)1, Fucheng Liu(刘富成)1,3, and Yafeng He(贺亚峰)1,2,3,‡ |
1 College of Physical Science and Technology, Hebei University, Baoding 071002, China;
2 Hebei Research Center of the Basic Discipline for Computational Physics, Baoding 071002, China;
3 Hebei Key Laboratory of High-Precision Computation and Application of Quantum Field Theory, Baoding 071002, China |
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Abstract Shear rheology is a fundamental property of soft matter, which can be deformed. Although the shear rheology of fluids has been well studied at the macroscopic scale, understanding the microscopic processes of rheology at the single-particle level remains a challenging issue. Dusty plasma serves as an ideal platform for exploring microscopic dynamics of system at the individual particle level. Here, we study the shear rheology of confined double rings of strongly coupled dust particles in a dusty plasma. The outer ring is actively driven to rotate using laser illumination. Depending on the particle number, the inner ring may passively rotate following the outer ring at different angular speeds, resulting in shear rheology. The number of dust particles influences particle arrangement, which is characterized by the pair correlation function, bond-orientational order parameter, and triangle skewness. That further alters structural stability, significantly affecting the shear rheology.
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Received: 06 August 2024
Revised: 22 September 2024
Accepted manuscript online: 10 October 2024
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PACS:
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52.27.Lw
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(Dusty or complex plasmas; plasma crystals)
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47.57.-s
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(Complex fluids and colloidal systems)
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83.60.Rs
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(Shear rate-dependent structure (shear thinning and shear thickening))
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 12275064 and 12475203), the Natural Science Foundation of Hebei Province, China (Grant No. A2024201020), the Regional Key Projects of the National Natural Science Foundation of China (Grant No. U23A20678), the Scientific Research and Innovation Team Project of Hebei University (Grant No. IT2023B03), and the Post-graduate’s Innovation Fund Project of Hebei University (Grant No. HBU2024BS007). |
Corresponding Authors:
Yafeng He
E-mail: heyf@hbu.edu.cn
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Cite this article:
Miao Tian(田淼), Jiaqi Li(李佳琪), Xuebo Yu(于雪波), Xue Liu(刘雪), Shaopeng Li(李绍鹏), Qing Li(李庆), Fucheng Liu(刘富成), and Yafeng He(贺亚峰) Shear rheology of confined double rings of dust particles in a dusty plasma 2024 Chin. Phys. B 33 125201
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