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...

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Autores principales:	Abba Abdulhamid Abubakar, Bekir Sami Yilbas, Al-Qahtani Hussain, Ghassan Hassan, Johnny Ebaika Adukwu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c49dae276a0c4520a34e656de0106d93
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spelling	oai:doaj.org-article:c49dae276a0c4520a34e656de0106d932021-12-02T18:02:06ZWater droplet can mitigate dust from hydrophobized micro-post array surfaces10.1038/s41598-021-97847-72045-2322https://doaj.org/article/c49dae276a0c4520a34e656de0106d932021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-97847-7https://doaj.org/toc/2045-2322Abstract 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.Abba Abdulhamid AbubakarBekir Sami YilbasAl-Qahtani HussainGhassan HassanJohnny Ebaika AdukwuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-19 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q 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
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.
format	article
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
title	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_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_sort	water droplet can mitigate dust from hydrophobized micro-post array surfaces
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/c49dae276a0c4520a34e656de0106d93
work_keys_str_mv	AT abbaabdulhamidabubakar waterdropletcanmitigatedustfromhydrophobizedmicropostarraysurfaces AT bekirsamiyilbas waterdropletcanmitigatedustfromhydrophobizedmicropostarraysurfaces AT alqahtanihussain waterdropletcanmitigatedustfromhydrophobizedmicropostarraysurfaces AT ghassanhassan waterdropletcanmitigatedustfromhydrophobizedmicropostarraysurfaces AT johnnyebaikaadukwu waterdropletcanmitigatedustfromhydrophobizedmicropostarraysurfaces
_version_	1718378954064134144

Water droplet can mitigate dust from hydrophobized micro-post array surfaces

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