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Laser-treated Parchment Paper: An Inexpensive Microfluidic Platform

Published online by Cambridge University Press:  28 June 2011

Girish Chitnis,
Zhenwen Ding,
Chun-Li Chang,
Cagri A. Savran and
Babak Ziaie
Girish Chitnis
Affiliation:
School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47907
Zhenwen Ding
Affiliation:
Department of Physics, Purdue University, West Lafayette, IN 47907Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47907
Chun-Li Chang
Affiliation:
School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47907Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47907
Cagri A. Savran
Affiliation:
School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47907Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47907
Babak Ziaie
Affiliation:
School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47907Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47907
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Abstract

In this paper, we report on a method for fabricating an inexpensive microfluidic platform on parchment paper. Parchment paper was selected for this purpose due to its wide availability for culinary applications and hydrophobic silicone-based surface coating. We were able to selectively modify the surface structure and property (hydrophobic to hydrophilic) using a CO2 laser. The modified surface has highly-porous structure which helps to trap chemical and biological reagents for analysis. The treated surface is stable over time and can be used for aqueous droplet assembly. Finally, we demonstrated the applicability of this platform for performing chemical reaction using luminol-based hemoglobin detection.

Keywords

laser ablationmicrostructurefluidics

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References

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