The electroosmosis mechanism for fluid delivery in PDMS multi-layer microchannel
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2014
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my.unimap-323952014-04-08T09:02:12Z The electroosmosis mechanism for fluid delivery in PDMS multi-layer microchannel Tijjani Adam, Shuwa Uda, Hashim, Prof. Dr. Md. Eaqub, Ali, Dr. Leow, Pei Ling tijjaniadam@yahoo.com.my uda@unimap.edu.my eaqubali@um.edu.my leowpl@fke.utm.my Diffusion Electroosmosis Microfluidic Microlaboratories Multi-layer microstructure Link to publisher's homepage at http://www.aspbs.com/ Here we reported on fabrication of multi-layer microstructures that takes the advantage of electroosmosis to mix fluids. Microlaboratories for biochemical applications often require rapid mixing of different fluid streams. At the microscale, flow is usually highly ordered laminar flow and the lack of turbulence makes diffusion the primary mechanism for mixing. While diffusional mixing of small molecules can occur in a matter of seconds over distances of tens of micrometers, mixing of larger molecules such as peptides, proteins, and high molecular- weight nucleic acids can require equilibration times from minutes to hours over comparable distances. Such delays are impractically long for many chemical analyses. These problems have led to an intense search for more efficient mixers for microfluidic systems most microscale mixing devices are either passive mixers that use geometrical stirring ctive mixers that use moving parts or external forces, such as pressure or electric field. In a passive mixer, one way of increasing the mixing is by "shredding" two or several fluids into very thin alternating layers, which decreases the average diffusion length for the molecules between the different fluids. Another way of improving mixing efficiency is to use active mixers with moving parts that stir the fluids. At the microscale level moving parts in an active mixer are very fragile. One alternative solution which we explored is to use electroosmotic effects to achieve a mixing effect that is perpendicular to the main direction of the flow. 2014-03-06T08:26:14Z 2014-03-06T08:26:14Z 2013-01 Article Advanced Science Letters, vol. 19(1), 2013, pages 12-15 1936-6612 http://www.ingentaconnect.com/content/asp/asl/2013/00000019/00000001/art00003?token=005c1b5d89d445429b45c5f3b3b474666483f25737b6e6e4642384f582a2f433e402c3568263c2b5ae61a433f0b3 http://dspace.unimap.edu.my:80/dspace/handle/123456789/32395 en American Scientific Publishers All rights reserved. |
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English |
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Diffusion Electroosmosis Microfluidic Microlaboratories Multi-layer microstructure |
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Diffusion Electroosmosis Microfluidic Microlaboratories Multi-layer microstructure Tijjani Adam, Shuwa Uda, Hashim, Prof. Dr. Md. Eaqub, Ali, Dr. Leow, Pei Ling The electroosmosis mechanism for fluid delivery in PDMS multi-layer microchannel |
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Link to publisher's homepage at http://www.aspbs.com/ |
| author2 |
tijjaniadam@yahoo.com.my |
| author_facet |
tijjaniadam@yahoo.com.my Tijjani Adam, Shuwa Uda, Hashim, Prof. Dr. Md. Eaqub, Ali, Dr. Leow, Pei Ling |
| format |
Article |
| author |
Tijjani Adam, Shuwa Uda, Hashim, Prof. Dr. Md. Eaqub, Ali, Dr. Leow, Pei Ling |
| author_sort |
Tijjani Adam, Shuwa |
| title |
The electroosmosis mechanism for fluid delivery in PDMS multi-layer microchannel |
| title_short |
The electroosmosis mechanism for fluid delivery in PDMS multi-layer microchannel |
| title_full |
The electroosmosis mechanism for fluid delivery in PDMS multi-layer microchannel |
| title_fullStr |
The electroosmosis mechanism for fluid delivery in PDMS multi-layer microchannel |
| title_full_unstemmed |
The electroosmosis mechanism for fluid delivery in PDMS multi-layer microchannel |
| title_sort |
electroosmosis mechanism for fluid delivery in pdms multi-layer microchannel |
| publisher |
American Scientific Publishers All rights reserved. |
| publishDate |
2014 |
| url |
http://dspace.unimap.edu.my:80/dspace/handle/123456789/32395 |
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1643796882831441920 |
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13.214268 |