Friction of two-dimensional colloidal particles with magnetic dipole and Lennard–Jones interactions: A numerical study
Abstract We use Langevin simulations to study the sliding friction of two-dimensional colloidal particles on a substrate with randomly distributed point-like pinning centers. The colloidal particles are modeled to interact with each other through repulsive magnetic dipole and attractive Lennard–Jone...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2019-06-01
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| Series: | Friction |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/s40544-019-0282-6 |
| _version_ | 1811328677440389120 |
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| author | Zhongying Zhang Cange Wu Qi Zhang Yigang Cao |
| author_facet | Zhongying Zhang Cange Wu Qi Zhang Yigang Cao |
| author_sort | Zhongying Zhang |
| collection | DOAJ |
| description | Abstract We use Langevin simulations to study the sliding friction of two-dimensional colloidal particles on a substrate with randomly distributed point-like pinning centers. The colloidal particles are modeled to interact with each other through repulsive magnetic dipole and attractive Lennard–Jones potentials. The subsequent occurrence of superlubricity, wherein the average friction force equals to zero, is accompanied by the appearance of islands with clear boundaries in the microscopic colloidal structures for weak pinning substrates. Friction arises for strong pinning substrates, and the average friction force increases with the substrate pinning intensity, and further, the islands disperse into disordered plastic structures. Moreover, the average friction force decreases with the repulsion intensity between the colloidal particles, and superlubricity finally results when the repulsion becomes sufficiently strong. Superlubricity also occurs for sufficiently weak attraction between colloidal particles, with an increase in the attraction intensity between colloidal particles leading to a nonlinear increase in the average friction force. With increasing temperature, the average friction force firstly increases and subsequently decreases rapidly. The above results can provide a theoretical framework for biological self-organization via utilization of the friction properties of microscopic or mesoscopic colloidal systems. |
| first_indexed | 2024-04-13T15:29:11Z |
| format | Article |
| id | doaj.art-cbe1302a9b4c4d27accdd7ba5bba80f5 |
| institution | Directory Open Access Journal |
| issn | 2223-7690 2223-7704 |
| language | English |
| last_indexed | 2024-04-13T15:29:11Z |
| publishDate | 2019-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Friction |
| spelling | doaj.art-cbe1302a9b4c4d27accdd7ba5bba80f52022-12-22T02:41:25ZengSpringerOpenFriction2223-76902223-77042019-06-018466667310.1007/s40544-019-0282-6Friction of two-dimensional colloidal particles with magnetic dipole and Lennard–Jones interactions: A numerical studyZhongying Zhang0Cange Wu1Qi Zhang2Yigang Cao3School of Physics and Engineering, Zhengzhou UniversitySchool of Physics and Engineering, Zhengzhou UniversitySchool of Physics and Engineering, Zhengzhou UniversitySchool of Physics and Engineering, Zhengzhou UniversityAbstract We use Langevin simulations to study the sliding friction of two-dimensional colloidal particles on a substrate with randomly distributed point-like pinning centers. The colloidal particles are modeled to interact with each other through repulsive magnetic dipole and attractive Lennard–Jones potentials. The subsequent occurrence of superlubricity, wherein the average friction force equals to zero, is accompanied by the appearance of islands with clear boundaries in the microscopic colloidal structures for weak pinning substrates. Friction arises for strong pinning substrates, and the average friction force increases with the substrate pinning intensity, and further, the islands disperse into disordered plastic structures. Moreover, the average friction force decreases with the repulsion intensity between the colloidal particles, and superlubricity finally results when the repulsion becomes sufficiently strong. Superlubricity also occurs for sufficiently weak attraction between colloidal particles, with an increase in the attraction intensity between colloidal particles leading to a nonlinear increase in the average friction force. With increasing temperature, the average friction force firstly increases and subsequently decreases rapidly. The above results can provide a theoretical framework for biological self-organization via utilization of the friction properties of microscopic or mesoscopic colloidal systems.http://link.springer.com/article/10.1007/s40544-019-0282-6frictionsliding frictionsuperlubricityself-assembly |
| spellingShingle | Zhongying Zhang Cange Wu Qi Zhang Yigang Cao Friction of two-dimensional colloidal particles with magnetic dipole and Lennard–Jones interactions: A numerical study Friction friction sliding friction superlubricity self-assembly |
| title | Friction of two-dimensional colloidal particles with magnetic dipole and Lennard–Jones interactions: A numerical study |
| title_full | Friction of two-dimensional colloidal particles with magnetic dipole and Lennard–Jones interactions: A numerical study |
| title_fullStr | Friction of two-dimensional colloidal particles with magnetic dipole and Lennard–Jones interactions: A numerical study |
| title_full_unstemmed | Friction of two-dimensional colloidal particles with magnetic dipole and Lennard–Jones interactions: A numerical study |
| title_short | Friction of two-dimensional colloidal particles with magnetic dipole and Lennard–Jones interactions: A numerical study |
| title_sort | friction of two dimensional colloidal particles with magnetic dipole and lennard jones interactions a numerical study |
| topic | friction sliding friction superlubricity self-assembly |
| url | http://link.springer.com/article/10.1007/s40544-019-0282-6 |
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