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Biosensors 2016, 6(3), 30; doi:10.3390/bios6030030

Improved Manufacturing Performance of Screen Printed Carbon Electrodes through Material Formulation

SPECIFIC, College of Engineering, Swansea University, Fabian Way, SA1 8AN Swansea, UK
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Academic Editors: Donatella Albanese and Roberto Pilloton
Received: 21 April 2016 / Revised: 4 June 2016 / Accepted: 16 June 2016 / Published: 27 June 2016
(This article belongs to the Special Issue Screen-Printed Electrodes and Sensors)
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Abstract

Printed carbon graphite materials are the primary common component in the majority of screen printed sensors. Screen printing allows a scalable manufacturing solution, accelerating the means by which novel sensing materials can make the transition from laboratory material to commercial product. A common bottleneck in any thick film printing process is the controlled drying of the carbon paste material. A study has been undertaken which examines the interaction between material solvent, printed film conductivity and process consistency. The study illustrates that it is possible to reduce the solvent boiling point to significantly increase process productivity while maintaining process consistency. The lower boiling point solvent also has a beneficial effect on the conductivity of the film, reducing the sheet resistance. It is proposed that this is a result of greater film stressing increasing charge percolation through greater inter particle contact. Simulations of material performance and drying illustrate that a multi layered printing provides a more time efficient manufacturing method. The findings have implications for the volume manufacturing of the carbon sensor electrodes but also have implications for other applications where conductive carbon is used, such as electrical circuits and photovoltaic devices. View Full-Text
Keywords: screen printing; carbon electrodes; manufacturing screen printing; carbon electrodes; manufacturing
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Jewell, E.; Philip, B.; Greenwood, P. Improved Manufacturing Performance of Screen Printed Carbon Electrodes through Material Formulation. Biosensors 2016, 6, 30.

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