@article{5efce42d62d04afe82098281c3298755,
title = "Hydrophilic slippery surface enabled coarsening effect for rapid water harvesting",
abstract = "Water harvesting through the condensation of vapor in air has the potential to alleviate water scarcity in arid regions around the globe. When water vapor is condensed on a cooled surface, tiny water droplets act as thermal barriers. Thus, they must be removed rapidly for efficient water harvesting. Passive technologies for droplet removal rely on in-site growth and direct contact of densely distributed droplets. However, it is challenging to remove submicrometer droplets that lead to a poor water harvesting rate. Here, we present a coarsening effect to rapidly remove water droplets with diameters <20 μm from the hydrophilic slippery liquid-infused porous surface (SLIPS). We quantitatively study the driving and drag forces to enhance the rapid droplet size evolution. The self-propelled coarsening effect enables rapid droplet removal regardless of surface orientations, showing a promising approach compared to those on PEGylated hydrophilic surface, hydrophobic SLIPS, and superhydrophobic surface in water harvesting.",
keywords = "coarsening, condensation, droplet, slippery surface, water harvesting",
author = "Zongqi Guo and Lei Zhang and Deepak Monga and Stone, {Howard A.} and Xianming Dai",
note = "Funding Information: Z.G., D.M., and X.D. acknowledge the National Science Foundation (award no. 1929677 ), and the Young Investigator Program at the Army Research Office (award no. W911NF1910416 ). L.Z. and X.D. acknowledge the startup funding support by the University of Texas at Dallas (UT Dallas ). This project was partially funded by the Office of Research at UT Dallas through the Core Facility Voucher Program . X.D. acknowledges the discussion with Jonathan Boreyko at the 71 st Annual Meeting of the American Physical Society{\textquoteright}s Division of Fluid Dynamics (DFD). Z.G. and X.D. acknowledge the discussion with Ping He. Jyotirmoy Sarma{\textquoteright}s proofreading is greatly appreciated. Funding Information: Z.G. D.M. and X.D. acknowledge the National Science Foundation (award no. 1929677), and the Young Investigator Program at the Army Research Office (award no. W911NF1910416). L.Z. and X.D. acknowledge the startup funding support by the University of Texas at Dallas (UT Dallas). This project was partially funded by the Office of Research at UT Dallas through the Core Facility Voucher Program. X.D. acknowledges the discussion with Jonathan Boreyko at the 71st Annual Meeting of the American Physical Society's Division of Fluid Dynamics (DFD). Z.G. and X.D. acknowledge the discussion with Ping He. Jyotirmoy Sarma's proofreading is greatly appreciated. X.D. conceived the research. X.D. and H.A.S. supervised the research. Z.G. and X.D. designed the experiments. Z.G. and L.Z. carried out the experiments. Z.G. D.M. and X.D. analyzed the data. Z.G. H.A.S. and X.D. developed the droplet movement model. Z.G. D.M. and X.D. developed the heat transfer model. Z.G. L.Z. D.M. H.A.S. and X.D. wrote and revised the manuscript. The authors declare no competing interests. Publisher Copyright: {\textcopyright} 2021 The Author(s)",
year = "2021",
month = apr,
day = "21",
doi = "10.1016/j.xcrp.2021.100387",
language = "English (US)",
volume = "2",
journal = "Cell Reports Physical Science",
issn = "2666-3864",
publisher = "Cell Press",
number = "4",
}