NDLI: Fabrication and validation of a multi-channel type microfluidic chip for electrokinetic streaming potential devices

Content Provider	Royal Society of Chemistry (RSC)
Author	Chun, Myung-Suk Shim, Min Suk Choi, Nak Won
Copyright Year	2006
Abstract	To elaborate on the applicability of the electrokinetic micro power generation, we designed and fabricated the silicon-glass as well as the PDMS-glass microfluidic chips with the unique features of a multi-channel. Besides miniaturizing the device, the key advantage of our microfluidic chip utilization lies in the reduction in water flow rate. Both a distributor and a collector taking the tapered duct geometry are positioned aiming the uniform distribution of water flow into all individual channels of the chip, in which several hundreds of single microchannels are assembled in parallel. A proper methodology is developed accompanying the deep reactive ion etching as well as the anodic bonding, and optimum process conditions necessary for hard and soft micromachining are presented. It has been shown experimentally and theoretically that the silicon-based microchannel leads to increasing streaming potential and higher external current compared to those of the PDMS-based one. A proper comparison between experimental results and theoretical computations allows justification of the validity of our novel devices. It is useful to recognize that a material inducing a higher magnitude of zeta potential has an advantage for obtaining higher power density under the same external resistance.
Starting Page	302
Ending Page	309
Page Count	8
File Format	HTM / HTML PDF
ISSN	14730197
Volume Number	6
Issue Number	2
Journal	Lab on a Chip
DOI	10.1039/b514327f
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Subscribed
Subject Keyword	Chemical milling Microchannel (microtechnology) Electrokinetic phenomena Discrete uniform distribution Zeta potential Deep reactive-ion etching Micro Power Ion
Content Type	Text
Resource Type	Article
Subject	Chemistry Nanoscience and Nanotechnology Biochemistry Bioengineering Biomedical Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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