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The electroosmosis mechanism for fluid delivery in PDMS multi-layer microchannel

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Main Authors: Tijjani Adam, Shuwa, Uda, Hashim, Prof. Dr., Md. Eaqub, Ali, Dr., Leow, Pei Ling
Other Authors: tijjaniadam@yahoo.com.my
Format: Article
Language:English
Published: American Scientific Publishers All rights reserved. 2014
Subjects:
Diffusion
Electroosmosis
Microfluidic
Microlaboratories
Multi-layer microstructure
Online Access:http://dspace.unimap.edu.my:80/dspace/handle/123456789/32395
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spelling 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.
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Diffusion
Electroosmosis
Microfluidic
Microlaboratories
Multi-layer microstructure
spellingShingle 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
description 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
_version_ 1643796882831441920
score 13.222552

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