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dc.contributor.authorKashaninejad, Navid
dc.contributor.authorNam-Trung, Nguyen
dc.contributor.authorChan, Weng Kong
dc.date.accessioned2020-08-27T04:05:29Z
dc.date.available2020-08-27T04:05:29Z
dc.date.issued2020
dc.identifier.issn2227-7080
dc.identifier.doi10.3390/technologies8020029
dc.identifier.urihttp://hdl.handle.net/10072/396822
dc.description.abstractControlling the evaporation process of a droplet is of the utmost importance for a number of technologies. Also, along with the advances of microfabrication, micropatterned surfaces have emerged as an important technology platform to tune the wettability and other surface properties of various fundamental and applied applications. Among the geometrical parameters of these micropatterns, it is of great interest to investigate whether the arrangement of the patterns would affect the evaporation process of a sessile liquid droplet. To address this question, we fabricated four microhole arrays with different arrangements, quantified by the parameter of “eccentricity”. The results suggested that, compared to smooth substrates, the evaporation mode was not only affected by engineering the microhole arrays, but also by the eccentricity of these micropatterns. The values of contact angle hysteresis (CAH) were used to quantify and test this hypothesis. The CAH could partially explain the different evaporation modes observed on the microhole arrays with zero and non-zero values of eccentricity. That is, on microhole arrays with zero eccentricity, CAH of water droplets was comparatively low (less than 20 ° ). Consistently, during the evaporation, around 60% of the life span of the droplet was in the mixed evaporation mode. Increasing the eccentricity of the microhole arrays increases the values of CAH to above 20 ° . Unlike the increasing trend of CAH, the evaporation modes of sessile droplets on the microhole array with non-zero values of eccentricity were almost similar. Over 75% of the life span of droplets on these surfaces was in constant contact line (CCL) mode. Our findings play a significant role in any technology platform containing micropatterned surfaces, where controlling the evaporation mode is desirable
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherMDPI
dc.relation.ispartofpagefrom29
dc.relation.ispartofissue2
dc.relation.ispartofjournalTechnologies
dc.relation.ispartofvolume8
dc.subject.fieldofresearchNanotechnology
dc.subject.fieldofresearchElectrical engineering
dc.subject.fieldofresearchcode4018
dc.subject.fieldofresearchcode4008
dc.subject.keywordsScience & Technology
dc.subject.keywordsEngineering, Multidisciplinary
dc.subject.keywordsEngineering
dc.subject.keywordsdroplet evaporation
dc.titleEngineering Micropatterned Surfaces for Controlling the Evaporation Process of Sessile Droplets
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationKashaninejad, N; Nam-Trung, N; Chan, WK, Engineering Micropatterned Surfaces for Controlling the Evaporation Process of Sessile Droplets, Technologies, 2020, 8 (2), pp. 29
dcterms.licensehttp://creativecommons.org/licenses/by/4.0/
dc.date.updated2020-08-27T00:35:07Z
dc.description.versionVersion of Record (VoR)
gro.rights.copyright© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
gro.hasfulltextFull Text
gro.griffith.authorNguyen, Nam-Trung
gro.griffith.authorKashaninejad, Navid


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