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Jeong, Hoon Eui
Multiscale Biomimetics & Manufacturing Lab
Research Interests
  • Biomimetics
  • Multiscale manufacturing
  • Micro/nanofabrication

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On the role of oxygen in fabricating microfluidic channels with ultraviolet curable materials

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Title
On the role of oxygen in fabricating microfluidic channels with ultraviolet curable materials
Other Titles
On the role of oxygen in fabricating microfluidic channels with ultraviolet curable materials
Author
Jeong, Hoon EuiSuh, Kahp Y.
Keywords
CAPILLARY-ELECTROPHORESIS; SURFACE MODIFICATION; SOLVENT-RESISTANT; FLOW LITHOGRAPHY; DEVICES; CHIP; POLY(DIMETHYLSILOXANE); MICROCHANNELS; SYSTEMS; POLYCARBONATE
Issue Date
2008-10
Publisher
ROYAL SOC CHEMISTRY
Citation
LAB ON A CHIP, v.8, no.11, pp.1787 - 1792
Abstract
We present the effects of oxygen on the irreversible bonding of a microchannel using an ultraviolet (UV) curable material of polyurethane acrylate (PUA). Microchannels were fabricated by bonding a top layer with impressions of a microfluidic channel and a bottom layer consisting of a PUA coating on a glass or a polyethylene terephthalate (PET) film substrate. The resulting channel is a homogeneous conduit of the PUA material. To find optimal bonding conditions, the bottom layer was cured under different oxygen concentration and UV exposure time at a constant UV intensity (10 mW cm(-2)). Our experimental and theoretical studies revealed that the channel bonding is severely affected by the concentration of oxygen either in the form of trapped air or permeated air out of the channel. In addition, an optimal UV exposure time is needed to prevent clogging or non-bonding of the channel
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DOI
10.1039/b810348h
ISSN
1473-0197
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