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Soft Surface: Droplets on Soft Surfaces Exhibit a Reluctance to Coalesce due to an Intervening Wetting Ridge (Adv. Mater. Interfaces 17/2020)
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2020-09-11 , DOI: 10.1002/admi.202070098
Rishav Roy 1 , Robert L. Seiler 2 , Justin A. Weibel 1 , Suresh V. Garimella 1
Affiliation  

It is an everyday observation that water droplets condensing on a rigid substrate coalesce immediately upon touching. Soft surfaces, however, possess unique properties that create an illusionary effect in this situation, making it appear that droplets can touch and form a dense pattern instead of coalescing. In article number 2000731 Rishav Roy, Suresh V. Garimella, and coworkers demonstrate that this reluctance to coalesce is a consequence of deformation of the soft surfaces to form intervening ridges between the droplets. The cover art illustrates the topography of droplet ‘footprints’ after they are removed from a cryogenically fixed soft substrate.
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中文翻译:

软质表面:由于存在中间的润湿脊,软质表面上的液滴表现出不愿意聚结的作用(材料研究接口17/2020)

每天观察到,在刚性基材上凝结的水滴在接触后会立即聚结。但是,柔软的表面具有独特的性能,在这种情况下会产生幻觉效果,使液滴似乎可以接触并形成致密的图案,而不是聚结。Rishav Roy,Suresh V. Garimella和同事在文章编号2000731中证明,这种不愿聚结的原因是软表面变形而在小滴之间形成中间的隆起。封面插图显示了从低温固定的软质基材上除去液滴后的“足迹”的形貌。
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更新日期:2020-09-11
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