| Pressure-driven flow in open fluidic channels. | |
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MedLine Citation:
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PMID: 21392774 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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At the boundary between a hydrophilic and hydrophobic surface coating a large contact angle hysteresis exists which can be used to retain fluid on a flat surface, a similar effect exists at the edge of a solid surface. In this work, pressure-driven flow is used to create fluid flow through a fluid volume confined along a 1mm wide strip of glass. Very high flow rates are shown to be achievable, reaching a value of 500μL/min over a 30mm length; at such values the maximum flow velocity is found through modeling to be 0.13m/s. By consideration of the minimum energy state the shape a certain fluid volume will adopt on a strip of material are well known for static fluids, we demonstrate flow through the two key types, the case resembling a section of a cylinder and the case of a pronounced bulge. This combination of fluid constrained though locations of high contact angle hysteresis combined with induced flow allows applications in detection of air-borne contaminants, the detection of changing fluid composition, and easy interfacing between microfluidic system and external tools. |
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Authors:
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Nicholas Davey; Adrian Neild |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-2-15 |
Journal Detail:
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Title: Journal of colloid and interface science Volume: - ISSN: 1095-7103 ISO Abbreviation: - Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-3-11 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0043125 Medline TA: J Colloid Interface Sci Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Elsevier Inc. All rights reserved. |
Affiliation:
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Department of Mechanical & Aerospace Engineering, Monash University, Clayton VIC 3800, Australia. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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