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Nanoliter deposition on star-shaped hydrophilic–superhydrophobic patterned surfaces

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Chang, Bo
dc.contributor.author Kivinen, Oskari
dc.contributor.author Pini, Ivana
dc.contributor.author Levkin, Pavel A.
dc.contributor.author Ras, Robin
dc.contributor.author Zhou, Quan
dc.date.accessioned 2018-09-04T11:13:49Z
dc.date.available 2018-09-04T11:13:49Z
dc.date.issued 2018-08-16
dc.identifier.citation Chang , B , Kivinen , O , Pini , I , Levkin , P A , Ras , R & Zhou , Q 2018 , ' Nanoliter deposition on star-shaped hydrophilic–superhydrophobic patterned surfaces ' , Soft Matter , vol. 14 , no. 36 , pp. 7500-7506 . https://doi.org/10.1039/C8SM01288A en
dc.identifier.issn 1744-683X
dc.identifier.issn 1744-6848
dc.identifier.other PURE UUID: a6dbf7ec-5af2-4251-9d84-330f317b9d6f
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/a6dbf7ec-5af2-4251-9d84-330f317b9d6f
dc.identifier.other PURE LINK: https://pubs.rsc.org/en/content/articlelanding/2018/sm/c8sm01288a
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/27521731/SCI_Chang_Nanoliter_Manuscript_post_print.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/33815
dc.description | openaire: EC/H2020/725513/EU//SuperRepel
dc.description.abstract Nanoliter sized droplet deposition has gained increasing importance in many biomedical, chemical, and microfluidic applications and in materials synthesis. In this paper, we report a simple method for rapid and high-throughput deposition of nanoliter-sized droplets by dragging a larger droplet on star-shaped hydrophilic–superhydrophobic patterned surfaces. Dragging a droplet on the patterned surface causes water to adhere to hydrophilic patterns. As the larger mother droplet detaches from a star-shaped pattern, a small daughter droplet is deposited on the pattern. Star-shaped hydrophilic patterns with a distinct number of spikes are fabricated and investigated. Systematic tests are carried out to study the influence of different process parameters including the volume of a mother droplet, the dragging velocity, the number of spikes and the dragging directions to the deposition process. The results indicate that creating microarrays by dragging large droplets on patterned hydrophilic–superhydrophobic surfaces yield a reliable, cost-efficient, high-accuracy and easily scalable deposition. The volume of the daughter droplet grows with the velocity of the mother droplet and the number of spikes in a pattern, and decreases with the volume of the mother droplet. en
dc.format.extent 7
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation info:eu-repo/grantAgreement/EC/H2020/725513/EU//SuperRepel
dc.relation.ispartofseries SOFT MATTER en
dc.rights openAccess en
dc.title Nanoliter deposition on star-shaped hydrophilic–superhydrophobic patterned surfaces en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Applied Physics
dc.contributor.department Karlsruhe Institute of Technology
dc.contributor.department Soft Matter and Wetting
dc.contributor.department Department of Electrical Engineering and Automation
dc.contributor.department Department of Bioproducts and Biosystems en
dc.identifier.urn URN:NBN:fi:aalto-201809044935
dc.identifier.doi 10.1039/C8SM01288A
dc.date.embargo info:eu-repo/date/embargoEnd/2019-08-16

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