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Laser micro-engineering of functionalised cyclic olefin polymers for microfluidic applications

McCann, Ronán and Bagga, Komal and Stalcup, Apryll and Vázquez, Mercedes and Brabazon, Dermot (2015) Laser micro-engineering of functionalised cyclic olefin polymers for microfluidic applications. In: SPIE DSS, 20-24 Apr 2015, Baltimore, MD..

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Abstract

Direct-write laser processing has been demonstrated to be capable of both surface patterning of micro- and nanoscale structures on polymer surfaces without significant modification of the surface chemistry or optical transmission of the laser processed area. In this work, the creation of microchannels via direct-write laser processing of 188 μm thickness cyclic olefin polymers is demonstrated, along with a route towards channel functionalization. Cyclic olefin polymers (COP) are an emerging class of polymers noted for their high chemical resistance, biocompatibility and higher optical transparency when compared to other common polymers. These properties make them excellent substrates for the fabrication of microfluidic devices. This paper presents the first investigation into infrared laser processing of COP using a 1064 nm Nd:YAG laser. Scanning electron microscopy and Raman spectroscopy were utilized to investigate the morphology and composition of these laser textured surfaces. A route for functionalization of these substrates for chemical and biological speciation and separation was examined using carbon nanoparticles. The nanoparticles were produced using pulsed laser ablation in liquid (PLAL) which has been reported as a fast and adaptable method for nanoparticle production. The nanoparticles produced were using transmission electron microscopy while the coating of substrates with these CNPs was examined using SEM. These results are discussed in the context of development of a new route for achieving surfaces optimized for microfluidicbased separations and speciation.

Item Type:Conference or Workshop Item (Paper)
Event Type:Conference
Refereed:No
Subjects:Physical Sciences > Thin films
Engineering > Materials
Physical Sciences > Lasers
Physical Sciences > Nanotechnology
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Science and Health > School of Chemical Sciences
Research Initiatives and Centres > Irish Separation Science Cluster (ISSC)
Research Initiatives and Centres > Advanced Processing Technology Research Centre (APTRC)
Research Initiatives and Centres > National Centre for Plasma Science and Technology (NCPST)
Published in:Proc. SPIE 9351, Laser-based Micro- and Nanoprocessing IX. 9351. Society of Photo-Optical Instrumentation Engineers (SPIE).
Publisher:Society of Photo-Optical Instrumentation Engineers (SPIE)
Official URL:http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=2206127
Copyright Information:© 2016 SPIE
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
ID Code:21300
Deposited On:03 Aug 2016 12:11 by Ronan McCann. Last Modified 10 Jan 2018 16:44

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