Adhesion of impure ice on surfaces
Adhesion of impure ice on surfaces
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不纯的冰粘附在表面上
DOI：
10.1039/d3mh01440a
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发表时间：
2024
影响因子：
13.3
通讯作者：
Anand, Sushant
中科院分区：
文献类型：
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作者：
Chatterjee, Rukmava;Thanjukutty, Rajith Unnikrishnan;Carducci, Christopher;Neogi, Arnab;Chakraborty, Suman;Bapu, Vijay Prithiv;Banik, Suvo;Sankaranarayanan, Subramanian K.;Anand, Sushant
不受欢迎的冰的积累会危及北极地区船舶对高空飞行飞机的操作安全，从而对寒冷气候下的现代生活产生有害影响。冰和大多数功能表面之间顽固的强附着力使得除冰是一件既耗费能量又危险的事情。因此，在过去的几十年里，大量的努力都是针对被动泄冰面的发展。传统上，这种对冰粘附的研究几乎总是基于纯水固化的冰。然而，在所有实际情况下，冻结的水都溶解了污染物；到目前为止，冰的粘附性研究仍然难以捉摸。在这里，我们阐明了天然水体中常见的各种杂质（盐、表面活性剂和溶剂）对冰在常见结构材料上的粘附所起的基本作用。我们阐明了不同的冷冻温度和污染物浓度如何显著改变冰的粘附强度，使其变得超级滑或非常粘附。杂质在冰中的夹带随着冻结速率的变化而变化，随后的粘附强度随着冷却温度的降低而增加。我们讨论了原位生成的富溶质液体层和夹在冰和底物之间的纳米水状无序冰层在这些观测背后可能起的作用。我们的工作为非纯水到冰转化的基本性质提供了有用的见解，并有助于建立各种自然现象的知识库，以及为交通、基础设施和能源系统提供广泛的防冰技术的合理设计。
The undesirable buildup of ice can compromise the operational safety of ships in the Arctic to high-flying airplanes, thereby having a detrimental impact on modern life in cold climates. The obstinately strong adhesion between ice and most functional surfaces makes ice removal an energetically expensive and dangerous affair. Hence, over the past few decades, substantial efforts have been directed toward the development of passive ice-shedding surfaces. Conventionally, such research on ice adhesion has almost always been based on ice solidified from pure water. However, in all practical situations, freezing water has dissolved contaminants; ice adhesion studies of which have remained elusive thus far. Here, we cast light on the fundamental role played by various impurities (salt, surfactant, and solvent) commonly found in natural water bodies on the adhesion of ice on common structural materials. We elucidate how varying freezing temperature & contaminant concentration can significantly alter the resultant ice adhesion strength making it either super-slippery or fiercely adherent. The entrapment of impurities in ice changes with the rate of freezing and ensuing adhesion strength increases as the cooling temperature decreases. We discuss the possible role played by the in situ generated solute enriched liquid layer and the nanometric water-like disordered ice layer sandwiched between ice and the substrate behind these observations. Our work provides useful insights into the elementary nature of impure water-to-ice transformation and contributes to the knowledge base of various natural phenomena and rational design of a broad spectrum of anti-icing technologies for transportation, infrastructure, and energy systems.