| Light-Governed Capillary Flow in Microfluidic Systems. | |
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MedLine Citation:
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PMID: 23015307 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Light-based flow systems for point-of-care devices are of interest because, in principle, sunlight could be used to operate them, potentially allowing for high functionality with minimal device complexity and expense. A light-operated method to drive flow using poly(N-isopropylacrylamide), a 'smart' polymer that changes wettability as a function of temperature, is introduced. It is grafted onto a carbon black-polydimethylsiloxane surface, which converts light into a thermal pattern that valves flow at user-defined locations. Flow rates are demonstrated ranging from 4 μL min(-1) at 25 °C to 0.1 μL min(-1) at 40 °C. The valving dynamics are also characterised, and a response time of less than 4 s is shown. Light-operated flow could provide the simple architecture and advanced functionality needed in low-resource point-of-care devices. |
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Authors:
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Li Jiang; David Erickson |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-9-27 |
Journal Detail:
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Title: Small (Weinheim an der Bergstrasse, Germany) Volume: - ISSN: 1613-6829 ISO Abbreviation: Small Publication Date: 2012 Sep |
Date Detail:
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Created Date: 2012-9-27 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101235338 Medline TA: Small Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
Affiliation:
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Cornell University, 240 Upson Hall, Ithaca, New York 14853, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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