{"title":"Dynamic characteristics of drops on tilted hydrophobic ratchet surfaces","authors":"Xin-ran Dai, Zhi-hai Jia, Jiao Wang","doi":"10.1680/jsuin.21.00082","DOIUrl":null,"url":null,"abstract":"Asymmetric ratchet surfaces are used to manipulate drops which has received extensive attention due to their wide potential applications. In this paper, using aluminum sheets as substrates, some hydrophobic ratchet surfaces with different geometric parameters were prepared. The dynamic behavior of drops in the initial movement stage on the tilted surfaces was captured by a high-speed camera. Compared with the behavior on the flat tilted aluminum sheet, the velocity and acceleration of the drop on the tilted ratchet surfaces exhibit nonlinearly characteristics. The forces acting on the drop was analyzed and a theoretical model was proposed to elucidate the dynamic behavior, which was in agreement with our experimental results. Besides, by changing the tilt angle of the substrate, the geometric parameters of ratchets, and the size of drops, the factors that affect the drop movement were discussed.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":null,"pages":null},"PeriodicalIF":2.7000,"publicationDate":"2022-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Surface Innovations","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1680/jsuin.21.00082","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Asymmetric ratchet surfaces are used to manipulate drops which has received extensive attention due to their wide potential applications. In this paper, using aluminum sheets as substrates, some hydrophobic ratchet surfaces with different geometric parameters were prepared. The dynamic behavior of drops in the initial movement stage on the tilted surfaces was captured by a high-speed camera. Compared with the behavior on the flat tilted aluminum sheet, the velocity and acceleration of the drop on the tilted ratchet surfaces exhibit nonlinearly characteristics. The forces acting on the drop was analyzed and a theoretical model was proposed to elucidate the dynamic behavior, which was in agreement with our experimental results. Besides, by changing the tilt angle of the substrate, the geometric parameters of ratchets, and the size of drops, the factors that affect the drop movement were discussed.
Surface InnovationsCHEMISTRY, PHYSICALMATERIALS SCIENCE, COAT-MATERIALS SCIENCE, COATINGS & FILMS
CiteScore
5.80
自引率
22.90%
发文量
66
期刊介绍：
The material innovations on surfaces, combined with understanding and manipulation of physics and chemistry of functional surfaces and coatings, have exploded in the past decade at an incredibly rapid pace.
Superhydrophobicity, superhydrophlicity, self-cleaning, self-healing, anti-fouling, anti-bacterial, etc., have become important fundamental topics of surface science research community driven by curiosity of physics, chemistry, and biology of interaction phenomenon at surfaces and their enormous potential in practical applications. Materials having controlled-functionality surfaces and coatings are important to the manufacturing of new products for environmental control, liquid manipulation, nanotechnological advances, biomedical engineering, pharmacy, biotechnology, and many others, and are part of the most promising technological innovations of the twenty-first century.
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