{"title":"Substrate viscosity-dependent droplet behavior on slippery surface","authors":"Swithin Hanosh , Sajan D. George","doi":"10.1016/j.colsurfa.2024.135811","DOIUrl":null,"url":null,"abstract":"<div><div>The interaction of droplets with surfaces that exhibit slippery behavior is not only an interesting natural phenomenon but also finds applications in diverse areas. Contrary to the commonly used liquid-infused surface for slippery surface fabrication, in this paper, a slippery surface is made by mixing the two components of polydimethylsiloxane and silicone oil in a ratio of 1:4. The study reveals the viscosity of the silicone oil in the mixture is found to have a profound effect on the suppression of the coffee-ring effect and sliding angle dependent velocity behavior. The droplet impact studies on the fabricated slippery surface illustrate that the viscosity of the silicone oil in the matrix plays an important role in the droplet dynamics on the surface, whether it is oscillation or partial rebound. In addition, the dimension of the droplet splitting during the partial rebound regime can be controlled by varying the Weber number. The present approach of creating slippery surfaces and controlling the droplet dynamics on its surface by varying the viscosity can find a plethora of applications, ranging from open microfluidics to medical devices.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"706 ","pages":"Article 135811"},"PeriodicalIF":4.9000,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S092777572402675X","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The interaction of droplets with surfaces that exhibit slippery behavior is not only an interesting natural phenomenon but also finds applications in diverse areas. Contrary to the commonly used liquid-infused surface for slippery surface fabrication, in this paper, a slippery surface is made by mixing the two components of polydimethylsiloxane and silicone oil in a ratio of 1:4. The study reveals the viscosity of the silicone oil in the mixture is found to have a profound effect on the suppression of the coffee-ring effect and sliding angle dependent velocity behavior. The droplet impact studies on the fabricated slippery surface illustrate that the viscosity of the silicone oil in the matrix plays an important role in the droplet dynamics on the surface, whether it is oscillation or partial rebound. In addition, the dimension of the droplet splitting during the partial rebound regime can be controlled by varying the Weber number. The present approach of creating slippery surfaces and controlling the droplet dynamics on its surface by varying the viscosity can find a plethora of applications, ranging from open microfluidics to medical devices.
期刊介绍:
Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena.
The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.