Graphene-based inkjet printing of flexible bioelectronic circuits and sensors

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Proceedings titleProceedings of SPIE - The International Society for Optical Engineering
ConferenceMicromachining and Microfabrication Process Technology XVIII, 5 February 2013 through 7 February 2013, San Francisco, CA
Article number861204
SubjectElectrical conductivity; Electrically conductive inks; Emerging technologies; Ink-jet printing technologies; Molecular self assembly; Oxygen Reduction; Precision fabrication; Thermal reduction; Biosensors; Composite micromechanics; Electric conductivity; Electrolytic reduction; Flexible electronics; Ink jet printing; Microanalysis; Microfabrication; Micromachining; Technology; Graphene
AbstractBioelectronics involves interfacing functional biomolecules or living cells with electronic circuitry. Recent advances in electrically conductive inks and inkjet printing technologies have enabled bioelectronic devices to be fabricated on mechanically flexible polymers, paper and silk. In this research, non-conductive graphene-oxide (GO) inks are synthesized from inexpensive graphite powders. Once printed on the flexible substrate the electrical conductivity of the micro-circuitry can be restored through thermal reduction. Laser irradiation is one method being investigated for transforming the high resistance printed GO film into conductive oxygen reduced graphene-oxide (rGO). Direct laser writing is a precision fabrication process that enables the imprinting of conductive and resistive micro-features on the GO film. The mechanically flexible rGO microcircuits can be further biofunctionalized using molecular self-assembly techniques. Opportunities and challenges in exploiting these emerging technologies for developing biosensors and bioelectronic cicruits are briefly discussed. © 2013 Copyright SPIE.
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AffiliationNational Research Council Canada (NRC-CNRC)
Peer reviewedYes
NPARC number21270712
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Record identifier4c0dd762-b855-440c-89ac-b285701b5816
Record created2014-02-17
Record modified2016-05-09
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