| Integrated Elastomeric Components for Autonomous Regulation of Sequential and Oscillatory Flow Switching in Microfluidic Devices. | |
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MedLine Citation:
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PMID: 20526435 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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A critical need for enhancing usability and capabilities of microfluidic technologies is the development of standardized, scalable, and versatile control systems1,2. Electronically controlled valves and pumps typically used for dynamic flow regulation, although useful, can limit convenience, scalability, and robustness3-5. This shortcoming has motivated development of device-embedded non-electrical flow-control systems. Existing approaches to regulate operation timing on-chip, however, still require external signals such as timed generation of fluid flow, bubbles, liquid plugs or droplets, or an alteration of chemical compositions or temperature6-16. Here, we describe a strategy to provide device-embedded flow switching and clocking functions. Physical gaps and cavities interconnected by holes are fabricated into a three-layer elastomer structure to form networks of fluidic gates that can spontaneously generate cascading and oscillatory flow output using only a constant flow of Newtonian fluids as the device input. The resulting microfluidic substrate architecture is simple, scalable, and should be applicable to various materials. This flow-powered fluidic gating scheme brings the autonomous signal processing ability of microelectronic circuits to microfluidics where there is the added diversity in current information of having distinct chemical or particulate species and richness in current operation of having chemical reactions and physical interactions. |
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Authors:
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Bobak Mosadegh; Chuan-Hsien Kuo; Yi-Chung Tung; Yu-Suke Torisawa; Tommaso Bersano-Begey; Hossein Tavana; Shuichi Takayama |
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Publication Detail:
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Type: JOURNAL ARTICLE |
Journal Detail:
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Title: Nature physics Volume: 6 ISSN: 1745-2473 ISO Abbreviation: - Publication Date: 2010 Jun |
Date Detail:
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Created Date: 2010-7-13 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101235387 Medline TA: Nat Phys Country: - |
Other Details:
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Languages: ENG Pagination: 433-437 Citation Subset: - |
Affiliation:
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Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, Michigan 48109-2099, USA. |
Export Citation:
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Descriptor/Qualifier:
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| Grant Support | |
ID/Acronym/Agency:
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R01 HL084370-04//NHLBI NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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