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dc.citation.endPage 742 -
dc.citation.number 4 -
dc.citation.startPage 738 -
dc.citation.title LAB ON A CHIP -
dc.citation.volume 11 -
dc.contributor.author Mosadegh, Bobak -
dc.contributor.author Tavana, Hossein -
dc.contributor.author Lesher-Perez, Sasha Cai -
dc.contributor.author Takayama, Shuichi -
dc.date.accessioned 2023-12-22T06:36:35Z -
dc.date.available 2023-12-22T06:36:35Z -
dc.date.created 2013-06-19 -
dc.date.issued 2011-02 -
dc.description.abstract The use of polydimethylsiloxane (PDMS) in microfluidic devices is extensive in academic research. One of the most fundamental treatments is to expose PDMS to plasma oxidation in order to render its surface temporarily hydrophilic and capable of permanent bonding. Here, we show that changes in the surface chemistry induced by plasma oxidation can spatially be counteracted very cleanly and reliably in a scalable manner by subsequent microcontact printing of residual oligomers from a PDMS stamp. We characterize the surface modifications through contact angle, atomic force microscopy, X-ray photoelectron spectroscopy, and bond-strength measurements. We utilize this approach for negating the bonding of a flexible membrane layer within an elastomeric valve and demonstrate its effectiveness by integration of over one thousand normally closed elastomeric valves within a single substrate. In addition, we demonstrate that surface energy patterning can be used for "open microfluidic" applications that utilize spatial control of surface wetting -
dc.identifier.bibliographicCitation LAB ON A CHIP, v.11, no.4, pp.738 - 742 -
dc.identifier.doi 10.1039/c0lc00112k -
dc.identifier.issn 1473-0197 -
dc.identifier.scopusid 2-s2.0-79551625865 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/2760 -
dc.identifier.url https://pubs.rsc.org/en/Content/ArticleLanding/2011/LC/C0LC00112K#!divAbstract -
dc.identifier.wosid 000286765700024 -
dc.language 영어 -
dc.publisher ROYAL SOC CHEMISTRY -
dc.title High-density fabrication of normally closed microfluidic valves by patterned deactivation of oxidized polydimethylsiloxane -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Biochemical Research Methods; Chemistry, Multidisciplinary; Chemistry, Analytical; Nanoscience & Nanotechnology -
dc.relation.journalResearchArea Biochemistry & Molecular Biology; Chemistry; Science & Technology - Other Topics -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -

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