Sliding Water Droplet on Oil Impregnated Surface and Dust Particle Mitigation
Self-cleaning of surfaces becomes challenging for energy harvesting devices because of the requirements of high optical transmittance of device surfaces. Surface texturing towards hydrophobizing can improve the self-cleaning ability of surfaces, yet lowers the optical transmittance. Introducing opti...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-02-01
|
| Series: | Molecules |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1420-3049/26/4/789 |
| _version_ | 1797415740315271168 |
|---|---|
| author | Saeed Bahatab Bekir Sami Yilbas Abba Abdulhamid Abubakar Ghassan Hassan Anwaruddin Siddiqui Mohammed Hussain Al-Qahtani Ahmet Z. Sahin Abdullah Al-Sharafi |
| author_facet | Saeed Bahatab Bekir Sami Yilbas Abba Abdulhamid Abubakar Ghassan Hassan Anwaruddin Siddiqui Mohammed Hussain Al-Qahtani Ahmet Z. Sahin Abdullah Al-Sharafi |
| author_sort | Saeed Bahatab |
| collection | DOAJ |
| description | Self-cleaning of surfaces becomes challenging for energy harvesting devices because of the requirements of high optical transmittance of device surfaces. Surface texturing towards hydrophobizing can improve the self-cleaning ability of surfaces, yet lowers the optical transmittance. Introducing optical matching fluid, such as silicon oil, over the hydrophobized surface improves the optical transmittance. However, self-cleaning ability, such as dust mitigation, of the oil-impregnated hydrophobic surfaces needs to be investigated. Hence, solution crystallization of the polycarbonate surface towards creating hydrophobic texture is considered and silicon oil impregnation of the crystallized surface is explored for improved optical transmittance and self-cleaning ability. The condition for silicon oil spreading over the solution treated surface is assessed and silicon oil and water infusions on the dust particles are evaluated. The movement of the water droplet over the silicon oil-impregnated sample is examined utilizing the high-speed facility and the tracker program. The effect of oil film thickness and the tilting angle of the surface on the sliding droplet velocity is estimated for two droplet volumes. The mechanism for the dust particle mitigation from the oil film surface by the sliding water droplet is analyzed. The findings reveal that silicon oil impregnation of the crystallized sample surface improves the optical transmittance significantly. The sliding velocity of the water droplet over the thick film (~700 µm) remains higher than that of the small thickness oil film (~50 µm), which is attributed to the large interfacial resistance created between the moving droplet and the oil on the crystallized surface. The environmental dust particles can be mitigated from the oil film surface by the sliding water droplet. The droplet fluid infusion over the dust particle enables to reorient the particle inside the droplet fluid. As the dust particle settles at the trailing edge of the droplet, the sliding velocity decays on the oil-impregnated sample. |
| first_indexed | 2024-03-09T05:53:52Z |
| format | Article |
| id | doaj.art-0ec54d9545794fc2b7c15403e664c295 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-09T05:53:52Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-0ec54d9545794fc2b7c15403e664c2952023-12-03T12:15:02ZengMDPI AGMolecules1420-30492021-02-0126478910.3390/molecules26040789Sliding Water Droplet on Oil Impregnated Surface and Dust Particle MitigationSaeed Bahatab0Bekir Sami Yilbas1Abba Abdulhamid Abubakar2Ghassan Hassan3Anwaruddin Siddiqui Mohammed4Hussain Al-Qahtani5Ahmet Z. Sahin6Abdullah Al-Sharafi7Mechanical Engineering Department, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran 31261, Saudi ArabiaMechanical Engineering Department, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran 31261, Saudi ArabiaMechanical Engineering Department, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran 31261, Saudi ArabiaMechanical Engineering Department, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran 31261, Saudi ArabiaMechanical Engineering Department, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran 31261, Saudi ArabiaMechanical Engineering Department, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran 31261, Saudi ArabiaMechanical Engineering Department, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran 31261, Saudi ArabiaMechanical Engineering Department, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran 31261, Saudi ArabiaSelf-cleaning of surfaces becomes challenging for energy harvesting devices because of the requirements of high optical transmittance of device surfaces. Surface texturing towards hydrophobizing can improve the self-cleaning ability of surfaces, yet lowers the optical transmittance. Introducing optical matching fluid, such as silicon oil, over the hydrophobized surface improves the optical transmittance. However, self-cleaning ability, such as dust mitigation, of the oil-impregnated hydrophobic surfaces needs to be investigated. Hence, solution crystallization of the polycarbonate surface towards creating hydrophobic texture is considered and silicon oil impregnation of the crystallized surface is explored for improved optical transmittance and self-cleaning ability. The condition for silicon oil spreading over the solution treated surface is assessed and silicon oil and water infusions on the dust particles are evaluated. The movement of the water droplet over the silicon oil-impregnated sample is examined utilizing the high-speed facility and the tracker program. The effect of oil film thickness and the tilting angle of the surface on the sliding droplet velocity is estimated for two droplet volumes. The mechanism for the dust particle mitigation from the oil film surface by the sliding water droplet is analyzed. The findings reveal that silicon oil impregnation of the crystallized sample surface improves the optical transmittance significantly. The sliding velocity of the water droplet over the thick film (~700 µm) remains higher than that of the small thickness oil film (~50 µm), which is attributed to the large interfacial resistance created between the moving droplet and the oil on the crystallized surface. The environmental dust particles can be mitigated from the oil film surface by the sliding water droplet. The droplet fluid infusion over the dust particle enables to reorient the particle inside the droplet fluid. As the dust particle settles at the trailing edge of the droplet, the sliding velocity decays on the oil-impregnated sample.https://www.mdpi.com/1420-3049/26/4/789water dropletsilicon oil impregnationcrystallizationhydrophobicpolycarbonate |
| spellingShingle | Saeed Bahatab Bekir Sami Yilbas Abba Abdulhamid Abubakar Ghassan Hassan Anwaruddin Siddiqui Mohammed Hussain Al-Qahtani Ahmet Z. Sahin Abdullah Al-Sharafi Sliding Water Droplet on Oil Impregnated Surface and Dust Particle Mitigation Molecules water droplet silicon oil impregnation crystallization hydrophobic polycarbonate |
| title | Sliding Water Droplet on Oil Impregnated Surface and Dust Particle Mitigation |
| title_full | Sliding Water Droplet on Oil Impregnated Surface and Dust Particle Mitigation |
| title_fullStr | Sliding Water Droplet on Oil Impregnated Surface and Dust Particle Mitigation |
| title_full_unstemmed | Sliding Water Droplet on Oil Impregnated Surface and Dust Particle Mitigation |
| title_short | Sliding Water Droplet on Oil Impregnated Surface and Dust Particle Mitigation |
| title_sort | sliding water droplet on oil impregnated surface and dust particle mitigation |
| topic | water droplet silicon oil impregnation crystallization hydrophobic polycarbonate |
| url | https://www.mdpi.com/1420-3049/26/4/789 |
| work_keys_str_mv | AT saeedbahatab slidingwaterdropletonoilimpregnatedsurfaceanddustparticlemitigation AT bekirsamiyilbas slidingwaterdropletonoilimpregnatedsurfaceanddustparticlemitigation AT abbaabdulhamidabubakar slidingwaterdropletonoilimpregnatedsurfaceanddustparticlemitigation AT ghassanhassan slidingwaterdropletonoilimpregnatedsurfaceanddustparticlemitigation AT anwaruddinsiddiquimohammed slidingwaterdropletonoilimpregnatedsurfaceanddustparticlemitigation AT hussainalqahtani slidingwaterdropletonoilimpregnatedsurfaceanddustparticlemitigation AT ahmetzsahin slidingwaterdropletonoilimpregnatedsurfaceanddustparticlemitigation AT abdullahalsharafi slidingwaterdropletonoilimpregnatedsurfaceanddustparticlemitigation |