Issue 8, 2010
From the journal:

Lab on a Chip

High-speed multiphoton absorption polymerization: fabrication of microfluidic channels with arbitrary cross-sections and high aspect ratios†

George Kumi,a   Ciceron O. Yanez,b   Kevin D. Belfieldbc  and  John T. Fourkas*adef  

* Corresponding authors

a Department of Chemistry and Biochemistry, University of Maryland, College Park, College Park, MD, USA
E-mail: fourkas@umd.edu
Fax: +1 301-314-4121

b Department of Chemistry, University of Central Florida, Orlando, FL, USA

c CREOL The College of Optics and Photonics, University of Central Florida, Orlando, FL, USA

d Institute for Phsyical Science and Technology, University of Maryland, College Park, College Park, MD, USA

e Center for Nanophysics and Advanced Materials, University of Maryland, College Park, College Park, MD, USA

f Maryland NanoCenter, University of Maryland, College Park, College Park, MD, USA

Abstract

We demonstrate the use of high-speed, multiphoton absorption polymerization (MAP) for the fabrication of large-area microfluidic master structures. High-speed fabrication in SU8 without laser-induced damage is made possible by the use of a novel photoacid generator with a high two-photon-absorption cross-section. Master structures fabricated with MAP can be used to produce polydimethylsiloxane microchannels with high aspect ratios and/or arbitrary cross-sections. Microchannels with different cross-sections and heights can be combined readily in a single device. This fabrication technique significantly increases the diversity of channel architectures available for microfluidic devices.

Graphical abstract: High-speed multiphoton absorption polymerization: fabrication of microfluidic channels with arbitrary cross-sections and high aspect ratios

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Article information

DOI
https://doi.org/10.1039/B923377F
Article type
Paper
Submitted
09 Nov 2009
Accepted
08 Jan 2010
First published
21 Jan 2010

Lab Chip, 2010,10, 1057-1060

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High-speed multiphoton absorption polymerization: fabrication of microfluidic channels with arbitrary cross-sections and high aspect ratios

G. Kumi, C. O. Yanez, K. D. Belfield and J. T. Fourkas, Lab Chip, 2010, 10, 1057 DOI: 10.1039/B923377F

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