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Sensors 2016, 16(11), 1795; doi:10.3390/s16111795

Comparison of Ultrasonic Welding and Thermal Bonding for the Integration of Thin Film Metal Electrodes in Injection Molded Polymeric Lab-on-Chip Systems for Electrochemistry

Department of Micro- and Nanotechnology, Technical University of Denmark, Kongens Lyngby 2800, Denmark
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Author to whom correspondence should be addressed.
Academic Editors: Amine Miled and Jesse Greener
Received: 5 September 2016 / Revised: 6 October 2016 / Accepted: 14 October 2016 / Published: 27 October 2016
(This article belongs to the Special Issue Microfluidics-Based Microsystem Integration Research)
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Abstract

We compare ultrasonic welding (UW) and thermal bonding (TB) for the integration of embedded thin-film gold electrodes for electrochemical applications in injection molded (IM) microfluidic chips. The UW bonded chips showed a significantly superior electrochemical performance compared to the ones obtained using TB. Parameters such as metal thickness of electrodes, depth of electrode embedding, delivered power, and height of energy directors (for UW), as well as pressure and temperature (for TB), were systematically studied to evaluate the two bonding methods and requirements for optimal electrochemical performance. The presented technology is intended for easy and effective integration of polymeric Lab-on-Chip systems to encourage their use in research, commercialization and education. View Full-Text
Keywords: ultrasonic welding; metal electrodes; injection molding; electrochemistry; microfluidics ultrasonic welding; metal electrodes; injection molding; electrochemistry; microfluidics
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Matteucci, M.; Heiskanen, A.; Zór, K.; Emnéus, J.; Taboryski, R. Comparison of Ultrasonic Welding and Thermal Bonding for the Integration of Thin Film Metal Electrodes in Injection Molded Polymeric Lab-on-Chip Systems for Electrochemistry. Sensors 2016, 16, 1795.

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