New perspectives for direct PDMS microfabrication using a CD-DVD laser

A simple and inexpensive alternative to high-power lasers for the direct fabrication of microchannels and rapid prototyping of poly-dimethylsiloxane (PDMS) is presented. By focusing the infrared laser beam of a commercial, low-power CD-DVD unit on absorbing carbon micro-cluster additives, highly loc...

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Bibliographic Details
Published in:Lab on a chip 2013-12, Vol.13 (24), p.4848-4854
Main Authors: Hautefeuille, M, Cabriales, L, Pimentel-Domínguez, R, Velázquez, V, Hernández-Cordero, J, Oropeza-Ramos, L, Rivera, M, Carreón-Castro, M P, Grether, M, López-Moreno, E
Format: Article
Language:English
Subjects:
Beams (radiation)
Cadmium
Carbon
Chemical Phenomena
Combustion
Compact Disks
Dimethylpolysiloxanes - chemistry
Focusing
Hydrophobic and Hydrophilic Interactions
Incandescence
Lasers
Microtechnology - instrumentation
Silicone resins
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Summary:A simple and inexpensive alternative to high-power lasers for the direct fabrication of microchannels and rapid prototyping of poly-dimethylsiloxane (PDMS) is presented. By focusing the infrared laser beam of a commercial, low-power CD-DVD unit on absorbing carbon micro-cluster additives, highly localized PDMS combustion can be used to etch the polymer, which is otherwise transparent at such wavelengths. Thanks to a precise and automated control of laser conditions, laser-induced incandescence is originated at the material surface and produces high-resolution micropatterns that present properties normally induced with lasers of much greater energies in PDMS: formation of in situ nanodomains, local fluorescence and waveguide patterns. An extensive study of the phenomenon and its performance for PDMS microfabrication are presented.
ISSN:1473-0197
1473-0189
DOI:10.1039/c3lc51041g