Droplet Impinging Behavior on Surfaces with Wettability Contrasts

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dc.contributor.authorFarshchian, Bahador
dc.contributor.authorPierce, Jacoby
dc.contributor.authorBeheshti, Mohammad S.
dc.contributor.authorPark, Sunggook
dc.contributor.authorKim, Namwon
dc.date.accessioned2019-08-19T18:57:47Z
dc.date.available2019-08-19T18:57:47Z
dc.date.issued2018-08
dc.description.abstractHeterogeneous substrates with moderate and extreme wettability contrasts were fabricated by comprising of superhydrophobic/hydrophilic and superhydrophobic/extremely hydrophilic surfaces, respectively. The interactions of water droplets impinging on the surfaces with sharp wettability contrasts were investigated experimentally. The impinging droplets that slightly touch the hydrophilic or extremely hydrophilic areas on each substrate exhibit a directional rebounding towards the more wetting surfaces, i.e., hydrophilic or extremely hydrophilic surface. The trajectory and landing distance of the rebounded droplets were tailored by controlling the releasing height of the droplet, wetting contrast across the border, and portion of the droplet touching the more wetting surface of the substrates with wettability contrasts. The landing distance of the droplet increases with the increased releasing height and higher wettability contrast across the border. Increasing the portion of the impinging droplet touching the more wetting surface of the heterogeneous substrates leads to the shorter landing distance of rebounded droplets.
dc.description.departmentEngineering
dc.description.departmentMaterials Science, Engineering, and Commercialization
dc.description.versionThis is the accepted manuscript version of an article published in Microelectronic Engineering.
dc.formatText
dc.format.extent17 pages
dc.format.medium1 file (.pdf)
dc.identifier.citationFarshchian, B., Pierce, J., Kim, Beheshti, M. S., Park, S., & Kim, N. (2018). Droplet impinging behavior on surfaces with wettability contrasts. Microelectronic Engineering, 195, pp. 50–56.
dc.identifier.doihttps://doi.org/10.1016/j.mee.2018.03.019
dc.identifier.urihttps://hdl.handle.net/10877/8524
dc.language.isoen
dc.publisherElsevier
dc.sourceMicroelectronic Engineering, 2018, Vol. 195, pp. 50-56.
dc.subjectdirectional rebounding
dc.subjectIngram School of Engineering
dc.titleDroplet Impinging Behavior on Surfaces with Wettability Contrasts
dc.typeArticle

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