Tailoring silicon for dew water harvesting panels

Autor: Xiaoyi Liu, Joachim Trosseille, Anne Mongruel, Frédéric Marty, Philippe Basset, Justine Laurent, Laurent Royon, Tianhong Cui, Daniel Beysens, Tarik Bourouina
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: iScience, Vol 24, Iss 7, Pp 102814- (2021)
Druh dokumentu: article
ISSN: 2589-0042
DOI: 10.1016/j.isci.2021.102814
Popis: Summary: Dew water, mostly ignored until now, can provide clean freshwater resources, just by extracting the atmospheric vapor available in surrounding air. Inspired by silicon-based solar panels, the vapor can be harvested by a concept of water condensing panels. Efficient water harvesting requires not only a considerable yield but also a timely water removal from the surface since the very beginning of condensation to avoid the huge evaporation losses. This translates into strict surface properties, which are difficult to simultaneously realize. Herein, we study various functionalized silicon surfaces, including the so-called Black Silicon, which supports two droplet motion modes—out-of-plane jumping and in-plane sweeping, due to its unique surface morphology, synergistically leading to a pioneering combination of above two required characteristics. According to silicon material's scalability, the proposed silicon-based water panels would benefit from existing infrastructures toward dual functions of energy harvesting in daytime and water harvesting in nighttime.
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