| Autonomous microfluidic control by chemically actuated micropumps and its application to chemical analyses. | |
| | |
MedLine Citation:
|
PMID: 20669895 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
|
Autonomous control of microfluidic transport was realized through the use of chemically actuated diaphragm micropumps connected to a network of controlling flow channels. A hydrogen peroxide (H(2)O(2)) solution was transported in the controlling flow channel by capillary action. Upon the solution's arrival at the lower compartment of a micropump filled with manganese dioxide (MnO(2)) powder, a volume change that accompanied the production of oxygen caused by the catalytic decomposition of H(2)O(2) induced inflation of the diaphragm. This in turn caused the movement of a solution in another network of flow channels formed in the upper layer. Micropumps that only exert pressure were also fabricated. By positioning the micropumps at appropriate locations in conjunction with additional flow-delaying components, the ejection of solutions from the reservoir of each micropump could be initiated at coordinated times. Furthermore, the solutions could be transported by the application of pressure from other micropumps. In other words, the information for switching from one micropump to another could be described on the chip in the form of a network of flow channels. This autonomous processing of solutions was demonstrated for enzymatic analyses of H(2)O(2), glucose, and lactate. |
| | |
Authors:
|
Atsushi Takashima; Kenichi Kojima; Hiroaki Suzuki |
Related Documents
:
|
9422805 - Effects of oral administration of different doses of purified micronized flavonoid frac... 16298875 - Toxicological screening for the effects of short-term exposure of sidestream cigarette ... 7739255 - The regional capillary distribution of retrograde blood cardioplegia in explanted human... 2638665 - Comparative study of capillary and arterial, blood gas values in plastic and glass syri... 7869015 - Monospecific antivenin therapy in russell's viper bite. 7948385 - Sequential morphological changes of the constrictive basilar artery in a canine model o... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Analytical chemistry Volume: 82 ISSN: 1520-6882 ISO Abbreviation: Anal. Chem. Publication Date: 2010 Aug |
Date Detail:
|
Created Date: 2010-08-13 Completed Date: 2010-12-15 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0370536 Medline TA: Anal Chem Country: United States |
Other Details:
|
Languages: eng Pagination: 6870-6 Citation Subset: - |
Affiliation:
|
Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Robust and photocontrollable DNA capsules using azobenzenes.
Next Document: Direct Aerobic Photo-Oxidative Synthesis of Aromatic Methyl Esters from Methyl Aromatics via Dimethy...