Altering the coffee-ring effect by adding a surfactant-like viscous polymer solution
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Seo, Changdeok | - |
dc.contributor.author | Jang, Daeho | - |
dc.contributor.author | Chae, Jongjin | - |
dc.contributor.author | Shin, Sehyun | - |
dc.date.accessioned | 2021-09-03T08:13:14Z | - |
dc.date.available | 2021-09-03T08:13:14Z | - |
dc.date.created | 2021-06-16 | - |
dc.date.issued | 2017-03-29 | - |
dc.identifier.issn | 2045-2322 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/84101 | - |
dc.description.abstract | A uniform deposition of the suspended particles in an evaporating droplet is necessary in many research fields. Such deposition is difficult to achieve, because the coffee-ring effect dominates the internal flow in a droplet. The present study adopts a biocompatible, surfactant-like polymer (Polyethylene glycol, PEG) to break the coffee-ring effect and obtain a relatively uniform deposition of the microparticles with yielding multi-ring pattern over a droplet area. Movements of the suspended particles in evaporating droplets and deposition patterns of them on a glass substrate were analyzed with microscopic images and video files. The PEG in the droplets successfully altered the coffee-ring effect because of the surface tension variation, which induced a centripetal Marangoni flow. Balancing these two phenomena apparently generated the Marangoni vortex. For PEG solution droplets, the pinning-depinning process during evaporation was periodically repeated and multiple rings were regularly formed. In conclusion, adding a surfactant-like viscous polymer in a droplet could provide a uniform coating of suspended particles, such as cells and various biomaterials, which would be essentially required for droplet assays of biomedical applications. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | NATURE PUBLISHING GROUP | - |
dc.subject | SESSILE DROPLET | - |
dc.subject | EVAPORATION | - |
dc.subject | SUPPRESSION | - |
dc.subject | SUBSTRATE | - |
dc.subject | PATTERNS | - |
dc.subject | DEPOSITS | - |
dc.subject | PROFILE | - |
dc.subject | STAINS | - |
dc.subject | FLOW | - |
dc.subject | FILM | - |
dc.title | Altering the coffee-ring effect by adding a surfactant-like viscous polymer solution | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Shin, Sehyun | - |
dc.identifier.doi | 10.1038/s41598-017-00497-x | - |
dc.identifier.scopusid | 2-s2.0-85016717983 | - |
dc.identifier.wosid | 000397729900006 | - |
dc.identifier.bibliographicCitation | SCIENTIFIC REPORTS, v.7 | - |
dc.relation.isPartOf | SCIENTIFIC REPORTS | - |
dc.citation.title | SCIENTIFIC REPORTS | - |
dc.citation.volume | 7 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalWebOfScienceCategory | Multidisciplinary Sciences | - |
dc.subject.keywordPlus | SESSILE DROPLET | - |
dc.subject.keywordPlus | EVAPORATION | - |
dc.subject.keywordPlus | SUPPRESSION | - |
dc.subject.keywordPlus | SUBSTRATE | - |
dc.subject.keywordPlus | PATTERNS | - |
dc.subject.keywordPlus | DEPOSITS | - |
dc.subject.keywordPlus | PROFILE | - |
dc.subject.keywordPlus | STAINS | - |
dc.subject.keywordPlus | FLOW | - |
dc.subject.keywordPlus | FILM | - |
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