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Fog harvesting on micro-structured metal meshes: Effect of surface ageing
Micro and Nano Engineering Pub Date : 2024-01-03 , DOI: 10.1016/j.mne.2023.100236
Jasafa Showket , Shibangi Majumder , Nirbhay Kumar , Soumyadip Sett , Pallab Sinha Mahapatra
Micro and Nano Engineering Pub Date : 2024-01-03 , DOI: 10.1016/j.mne.2023.100236
Jasafa Showket , Shibangi Majumder , Nirbhay Kumar , Soumyadip Sett , Pallab Sinha Mahapatra
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Access to clean drinking water is a critical need for human societies. Intercepting atmospheric fog can help collect water from the atmosphere, even in situations of high-water scarcity in fog-prone areas. Metal meshes or screens are commonly used as fog collectors, where the mesh surfaces are often engineered to enhance water collection rates. Despite significant work over the past several decades, the ideal surface wettability desired in terms of surface roughness and functionalization for efficient fog harvesting is not well understood. The volume of water collected depends on the proportion of fog intercepted by the meshes and how effectively the deposited water droplets drain off into the collector. In this work, we employ scalable surface treatments such as chemical etching and atmospheric pressure vapor deposition on stainless steel meshes to alter the surface wettability. We evaluate the efficacy of fog harvesting on the wettability altered meshes, and compare their performance against untreated stainless steel meshes. We further investigate the effect of surface ageing on the wettability and fog collection performance. Our work not only offers valuable design guidelines for the development of effective fog collectors but also highlights the significant influence of the atmosphere in controlling wetting behaviour.
中文翻译:
微结构金属网上的雾收集:表面老化的影响
获得清洁饮用水是人类社会的迫切需求。拦截大气雾可以帮助从大气中收集水分,即使是在多雾地区严重缺水的情况下也是如此。金属网或筛网通常用作雾收集器,其中网表面通常经过设计以提高集水率。尽管在过去的几十年里进行了大量的工作,但在表面粗糙度和有效雾收集的功能化方面所需的理想表面润湿性尚不清楚。收集的水量取决于网格拦截的雾气比例以及沉积的水滴排入收集器的效率。在这项工作中,我们采用可扩展的表面处理,例如不锈钢网上的化学蚀刻和常压气相沉积,以改变表面润湿性。我们评估了雾收集对润湿性改变的网格的功效,并将其性能与未经处理的不锈钢网格进行了比较。我们进一步研究了表面老化对润湿性和集雾性能的影响。我们的工作不仅为开发有效的集雾器提供了有价值的设计指南,而且还强调了大气在控制润湿行为方面的重大影响。
更新日期:2024-01-03
中文翻译:
![](https://scdn.x-mol.com/jcss/images/paperTranslation.png)
微结构金属网上的雾收集:表面老化的影响
获得清洁饮用水是人类社会的迫切需求。拦截大气雾可以帮助从大气中收集水分,即使是在多雾地区严重缺水的情况下也是如此。金属网或筛网通常用作雾收集器,其中网表面通常经过设计以提高集水率。尽管在过去的几十年里进行了大量的工作,但在表面粗糙度和有效雾收集的功能化方面所需的理想表面润湿性尚不清楚。收集的水量取决于网格拦截的雾气比例以及沉积的水滴排入收集器的效率。在这项工作中,我们采用可扩展的表面处理,例如不锈钢网上的化学蚀刻和常压气相沉积,以改变表面润湿性。我们评估了雾收集对润湿性改变的网格的功效,并将其性能与未经处理的不锈钢网格进行了比较。我们进一步研究了表面老化对润湿性和集雾性能的影响。我们的工作不仅为开发有效的集雾器提供了有价值的设计指南,而且还强调了大气在控制润湿行为方面的重大影响。