Collective motion of pulsating active particles in confined structures
The collective motion of pulsating active particles with periodic size contraction is investigated in a two-dimensional asymmetric channel. Our findings reveal that changes in particle size can act as a non-equilibrium driving force, disrupting the system’s thermodynamic equilibrium and leading to t...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/ad23a5 |
| _version_ | 1797319199578652672 |
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| author | Wan-hua Liu Wei-jing Zhu Bao-quan Ai |
| author_facet | Wan-hua Liu Wei-jing Zhu Bao-quan Ai |
| author_sort | Wan-hua Liu |
| collection | DOAJ |
| description | The collective motion of pulsating active particles with periodic size contraction is investigated in a two-dimensional asymmetric channel. Our findings reveal that changes in particle size can act as a non-equilibrium driving force, disrupting the system’s thermodynamic equilibrium and leading to the transformation of self-contraction motion into directional motion in the asymmetric channel. The specific direction of motion is dictated by the symmetrical properties of the channel. Furthermore, our study identifies an optimal degree of channel opening (or self-pulsation frequency) at which the average velocity reaches its peak value. At lower frequencies, the average velocity demonstrates a peak function in relation to the self-pulsation amplitude (or particle number density). Conversely, at higher frequencies, the average velocity increases with the self-pulsation amplitude (or particle number density). The system exhibits three distinct states: the arrested ordered state, disordered state, and cycling ordered state. Notably, particle rectification reaches its optimum in the disordered state. |
| first_indexed | 2024-03-08T04:03:24Z |
| format | Article |
| id | doaj.art-3aa50f21acd34d45aa9beb0ca5cd1a05 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-08T04:03:24Z |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-3aa50f21acd34d45aa9beb0ca5cd1a052024-02-09T09:19:48ZengIOP PublishingNew Journal of Physics1367-26302024-01-0126202301710.1088/1367-2630/ad23a5Collective motion of pulsating active particles in confined structuresWan-hua Liu0Wei-jing Zhu1Bao-quan Ai2https://orcid.org/0000-0002-3033-8630Key Laboratory of Atomic and Subatomic Structure and Quantum Control (Ministry of Education), Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of Matter, School of Physics, South China Normal University , Guangzhou 510006, People’s Republic of ChinaSchool of Photoelectric Engineering, Guangdong Polytechnic Normal University , Guangzhou 510665, People’s Republic of ChinaKey Laboratory of Atomic and Subatomic Structure and Quantum Control (Ministry of Education), Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of Matter, School of Physics, South China Normal University , Guangzhou 510006, People’s Republic of China; Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, and Guangdong-Hong Kong Joint Laboratory of Quantum Matter, South China Normal University , Guangzhou 510006, People’s Republic of ChinaThe collective motion of pulsating active particles with periodic size contraction is investigated in a two-dimensional asymmetric channel. Our findings reveal that changes in particle size can act as a non-equilibrium driving force, disrupting the system’s thermodynamic equilibrium and leading to the transformation of self-contraction motion into directional motion in the asymmetric channel. The specific direction of motion is dictated by the symmetrical properties of the channel. Furthermore, our study identifies an optimal degree of channel opening (or self-pulsation frequency) at which the average velocity reaches its peak value. At lower frequencies, the average velocity demonstrates a peak function in relation to the self-pulsation amplitude (or particle number density). Conversely, at higher frequencies, the average velocity increases with the self-pulsation amplitude (or particle number density). The system exhibits three distinct states: the arrested ordered state, disordered state, and cycling ordered state. Notably, particle rectification reaches its optimum in the disordered state.https://doi.org/10.1088/1367-2630/ad23a5pulsating active particlescollective motionratchet |
| spellingShingle | Wan-hua Liu Wei-jing Zhu Bao-quan Ai Collective motion of pulsating active particles in confined structures New Journal of Physics pulsating active particles collective motion ratchet |
| title | Collective motion of pulsating active particles in confined structures |
| title_full | Collective motion of pulsating active particles in confined structures |
| title_fullStr | Collective motion of pulsating active particles in confined structures |
| title_full_unstemmed | Collective motion of pulsating active particles in confined structures |
| title_short | Collective motion of pulsating active particles in confined structures |
| title_sort | collective motion of pulsating active particles in confined structures |
| topic | pulsating active particles collective motion ratchet |
| url | https://doi.org/10.1088/1367-2630/ad23a5 |
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