Crossover from the coffee-ring effect to the uniform deposit caused by irreversible cluster-cluster aggregation
The coffee-ring effect for particle deposition near the three-phase line after drying a pinned sessile colloidal droplet has been suppressed or attenuated in many recent studies. However, there have been few attempts to simulate the mitigation of the effect in the presence of strong particle-particl...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2015
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| Online Access: | https://hdl.handle.net/10356/83652 http://hdl.handle.net/10220/39141 |
| _version_ | 1811694096508518400 |
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| author | Crivoi, Alexandru Duan, Fei Zhong, X. |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Crivoi, Alexandru Duan, Fei Zhong, X. |
| author_sort | Crivoi, Alexandru |
| collection | NTU |
| description | The coffee-ring effect for particle deposition near the three-phase line after drying a pinned sessile colloidal droplet has been suppressed or attenuated in many recent studies. However, there have been few attempts to simulate the mitigation of the effect in the presence of strong particle-particle attraction forces. We develop a three-dimensional stochastic model to investigate the drying process of a pinned colloidal sessile droplet by considering the sticking between particles, which was observed in the experiments. The Monte Carlo simulation results show that by solely promoting the particle-particle attraction in the model, the final deposit shape is transformed from the coffee ring to the uniform film deposition. This phenomenon is modeled using the colloidal aggregation technique and explained by the “Tetris principle,” meaning that unevenly shaped or branched particle clusters rapidly build up a sparse structure spanning throughout the entire domain in the drying process. The influence of the controlled parameters is analyzed as well. The simulation is reflected by the drying patterns of the nanofluid droplets through the surfactant control in the experiments. |
| first_indexed | 2024-10-01T07:02:09Z |
| format | Journal Article |
| id | ntu-10356/83652 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:02:09Z |
| publishDate | 2015 |
| record_format | dspace |
| spelling | ntu-10356/836522023-07-14T15:51:38Z Crossover from the coffee-ring effect to the uniform deposit caused by irreversible cluster-cluster aggregation Crivoi, Alexandru Duan, Fei Zhong, X. School of Mechanical and Aerospace Engineering The coffee-ring effect for particle deposition near the three-phase line after drying a pinned sessile colloidal droplet has been suppressed or attenuated in many recent studies. However, there have been few attempts to simulate the mitigation of the effect in the presence of strong particle-particle attraction forces. We develop a three-dimensional stochastic model to investigate the drying process of a pinned colloidal sessile droplet by considering the sticking between particles, which was observed in the experiments. The Monte Carlo simulation results show that by solely promoting the particle-particle attraction in the model, the final deposit shape is transformed from the coffee ring to the uniform film deposition. This phenomenon is modeled using the colloidal aggregation technique and explained by the “Tetris principle,” meaning that unevenly shaped or branched particle clusters rapidly build up a sparse structure spanning throughout the entire domain in the drying process. The influence of the controlled parameters is analyzed as well. The simulation is reflected by the drying patterns of the nanofluid droplets through the surfactant control in the experiments. MOE (Min. of Education, S’pore) Published version 2015-12-17T08:09:52Z 2019-12-06T15:27:34Z 2015-12-17T08:09:52Z 2019-12-06T15:27:34Z 2015 Journal Article Crivoi, A., Zhong, X., & Duan, F. (2015). Crossover from the coffee-ring effect to the uniform deposit caused by irreversible cluster-cluster aggregation. Physical Review E, 92, 032302-. 1539-3755 https://hdl.handle.net/10356/83652 http://hdl.handle.net/10220/39141 10.1103/PhysRevE.92.032302 en Physical Review E © 2015 American Physical Society. This paper was published in Physical Review E and is made available as an electronic reprint (preprint) with permission of American Physical Society. The published version is available at: [http://dx.doi.org/10.1103/PhysRevE.92.032302]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 9 p. application/pdf |
| spellingShingle | Crivoi, Alexandru Duan, Fei Zhong, X. Crossover from the coffee-ring effect to the uniform deposit caused by irreversible cluster-cluster aggregation |
| title | Crossover from the coffee-ring effect to the uniform deposit caused by irreversible cluster-cluster aggregation |
| title_full | Crossover from the coffee-ring effect to the uniform deposit caused by irreversible cluster-cluster aggregation |
| title_fullStr | Crossover from the coffee-ring effect to the uniform deposit caused by irreversible cluster-cluster aggregation |
| title_full_unstemmed | Crossover from the coffee-ring effect to the uniform deposit caused by irreversible cluster-cluster aggregation |
| title_short | Crossover from the coffee-ring effect to the uniform deposit caused by irreversible cluster-cluster aggregation |
| title_sort | crossover from the coffee ring effect to the uniform deposit caused by irreversible cluster cluster aggregation |
| url | https://hdl.handle.net/10356/83652 http://hdl.handle.net/10220/39141 |
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