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Hydrophilic reentrant SLIPS enabled flow separation for rapid water harvesting

Water harvesting from air is desired for decentralized water supply wherever water is needed. When water vapor is condensed as droplets on a surface the unremoved droplets act as thermal barriers. A surface that can provide continual droplet-free areas for nucleation is favorable for condensation wa...

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Detalles Bibliográficos
Autores principales: Guo, Zongqi, Boylan, Dylan, Shan, Li, Dai, Xianming
Formato: Online Artículo Texto
Lenguaje:English
Publicado: National Academy of Sciences 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9457051/
https://www.ncbi.nlm.nih.gov/pubmed/36037348
http://dx.doi.org/10.1073/pnas.2209662119
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author Guo, Zongqi
Boylan, Dylan
Shan, Li
Dai, Xianming
author_facet Guo, Zongqi
Boylan, Dylan
Shan, Li
Dai, Xianming
author_sort Guo, Zongqi
collection PubMed
description Water harvesting from air is desired for decentralized water supply wherever water is needed. When water vapor is condensed as droplets on a surface the unremoved droplets act as thermal barriers. A surface that can provide continual droplet-free areas for nucleation is favorable for condensation water harvesting. Here, we report a flow-separation condensation mode on a hydrophilic reentrant slippery liquid-infused porous surface (SLIPS) that rapidly removes droplets with diameters above 50 μm. The slippery reentrant channels lock the liquid columns inside and transport them to the end of each channel. We demonstrate that the liquid columns can harvest the droplets on top of the hydrophilic reentrant SLIPS at a high droplet removal frequency of 130 Hz/mm(2). The sustainable flow separation without flooding increases the water harvesting rate by 110% compared to the state-of-the-art hydrophilic flat SLIPS. Such a flow-separation condensation approach paves a way for water harvesting.
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spelling pubmed-94570512022-09-09 Hydrophilic reentrant SLIPS enabled flow separation for rapid water harvesting Guo, Zongqi Boylan, Dylan Shan, Li Dai, Xianming Proc Natl Acad Sci U S A Physical Sciences Water harvesting from air is desired for decentralized water supply wherever water is needed. When water vapor is condensed as droplets on a surface the unremoved droplets act as thermal barriers. A surface that can provide continual droplet-free areas for nucleation is favorable for condensation water harvesting. Here, we report a flow-separation condensation mode on a hydrophilic reentrant slippery liquid-infused porous surface (SLIPS) that rapidly removes droplets with diameters above 50 μm. The slippery reentrant channels lock the liquid columns inside and transport them to the end of each channel. We demonstrate that the liquid columns can harvest the droplets on top of the hydrophilic reentrant SLIPS at a high droplet removal frequency of 130 Hz/mm(2). The sustainable flow separation without flooding increases the water harvesting rate by 110% compared to the state-of-the-art hydrophilic flat SLIPS. Such a flow-separation condensation approach paves a way for water harvesting. National Academy of Sciences 2022-08-29 2022-09-06 /pmc/articles/PMC9457051/ /pubmed/36037348 http://dx.doi.org/10.1073/pnas.2209662119 Text en Copyright © 2022 the Author(s). Published by PNAS. https://creativecommons.org/licenses/by-nc-nd/4.0/This open access article is distributed under Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND) (https://creativecommons.org/licenses/by-nc-nd/4.0/) .
spellingShingle Physical Sciences
Guo, Zongqi
Boylan, Dylan
Shan, Li
Dai, Xianming
Hydrophilic reentrant SLIPS enabled flow separation for rapid water harvesting
title Hydrophilic reentrant SLIPS enabled flow separation for rapid water harvesting
title_full Hydrophilic reentrant SLIPS enabled flow separation for rapid water harvesting
title_fullStr Hydrophilic reentrant SLIPS enabled flow separation for rapid water harvesting
title_full_unstemmed Hydrophilic reentrant SLIPS enabled flow separation for rapid water harvesting
title_short Hydrophilic reentrant SLIPS enabled flow separation for rapid water harvesting
title_sort hydrophilic reentrant slips enabled flow separation for rapid water harvesting
topic Physical Sciences
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9457051/
https://www.ncbi.nlm.nih.gov/pubmed/36037348
http://dx.doi.org/10.1073/pnas.2209662119
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