Water droplet can mitigate dust from hydrophobized micro-post array surfaces
Abstract Water droplet rolling motion over the hydrophobized and optically transparent micro-post array surfaces is examined towards dust removal pertinent to self-cleaning applications. Micro-post arrays are replicated over the optically transparent polydimethylsiloxane (PDMS) surfaces. The influen...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2021-09-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-97847-7 |
| _version_ | 1818434121271083008 |
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| author | Abba Abdulhamid Abubakar Bekir Sami Yilbas Al-Qahtani Hussain Ghassan Hassan Johnny Ebaika Adukwu |
| author_facet | Abba Abdulhamid Abubakar Bekir Sami Yilbas Al-Qahtani Hussain Ghassan Hassan Johnny Ebaika Adukwu |
| author_sort | Abba Abdulhamid Abubakar |
| collection | DOAJ |
| description | Abstract Water droplet rolling motion over the hydrophobized and optically transparent micro-post array surfaces is examined towards dust removal pertinent to self-cleaning applications. Micro-post arrays are replicated over the optically transparent polydimethylsiloxane (PDMS) surfaces. The influence of micro-post array spacing on droplet rolling dynamics is explored for clean and dusty surfaces. The droplet motions over clean and dusty micro-post array surfaces are monitored and quantified. Flow inside the rolling droplet is simulated adopting the experimental conditions. Findings reveal that micro-post gap spacing significantly influences droplet velocity on clean and dusty hydrophobized surfaces. Air trapped within the micro-post gaps acts like a cushion reducing the three-phase contact line and interfacial contact area of the rolling droplet. This gives rise to increased droplet velocity over the micro-post array surface. Droplet kinetic energy dissipation remains large for plain and micro-post arrays with small gap spacings. A Rolling droplet can pick up dust particles from micro-post array gaps; however, few dust residues are observed for large gap spacings. Nevertheless, dust residues are small in quantity over hydrophobized micro-post array surfaces. |
| first_indexed | 2024-12-14T16:31:57Z |
| format | Article |
| id | doaj.art-c49dae276a0c4520a34e656de0106d93 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-14T16:31:57Z |
| publishDate | 2021-09-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-c49dae276a0c4520a34e656de0106d932022-12-21T22:54:34ZengNature PortfolioScientific Reports2045-23222021-09-0111111910.1038/s41598-021-97847-7Water droplet can mitigate dust from hydrophobized micro-post array surfacesAbba Abdulhamid Abubakar0Bekir Sami Yilbas1Al-Qahtani Hussain2Ghassan Hassan3Johnny Ebaika Adukwu4Mechanical Engineering Department, KFUPMMechanical Engineering Department, KFUPMMechanical Engineering Department, KFUPMMechanical Engineering Department, KFUPMMechanical Engineering Department, KFUPMAbstract Water droplet rolling motion over the hydrophobized and optically transparent micro-post array surfaces is examined towards dust removal pertinent to self-cleaning applications. Micro-post arrays are replicated over the optically transparent polydimethylsiloxane (PDMS) surfaces. The influence of micro-post array spacing on droplet rolling dynamics is explored for clean and dusty surfaces. The droplet motions over clean and dusty micro-post array surfaces are monitored and quantified. Flow inside the rolling droplet is simulated adopting the experimental conditions. Findings reveal that micro-post gap spacing significantly influences droplet velocity on clean and dusty hydrophobized surfaces. Air trapped within the micro-post gaps acts like a cushion reducing the three-phase contact line and interfacial contact area of the rolling droplet. This gives rise to increased droplet velocity over the micro-post array surface. Droplet kinetic energy dissipation remains large for plain and micro-post arrays with small gap spacings. A Rolling droplet can pick up dust particles from micro-post array gaps; however, few dust residues are observed for large gap spacings. Nevertheless, dust residues are small in quantity over hydrophobized micro-post array surfaces.https://doi.org/10.1038/s41598-021-97847-7 |
| spellingShingle | Abba Abdulhamid Abubakar Bekir Sami Yilbas Al-Qahtani Hussain Ghassan Hassan Johnny Ebaika Adukwu Water droplet can mitigate dust from hydrophobized micro-post array surfaces Scientific Reports |
| title | Water droplet can mitigate dust from hydrophobized micro-post array surfaces |
| title_full | Water droplet can mitigate dust from hydrophobized micro-post array surfaces |
| title_fullStr | Water droplet can mitigate dust from hydrophobized micro-post array surfaces |
| title_full_unstemmed | Water droplet can mitigate dust from hydrophobized micro-post array surfaces |
| title_short | Water droplet can mitigate dust from hydrophobized micro-post array surfaces |
| title_sort | water droplet can mitigate dust from hydrophobized micro post array surfaces |
| url | https://doi.org/10.1038/s41598-021-97847-7 |
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