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Bioelectronics 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.
Dogan Sinar,George K. Knopf, andSuwas Nikumb
"Graphene-based inkjet printing of flexible bioelectronic circuits and sensors", Proc. SPIE 8612, Micromachining and Microfabrication Process Technology XVIII, 861204 (9 March 2013); https://doi.org/10.1117/12.2003936
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Dogan Sinar, George K. Knopf, Suwas Nikumb, "Graphene-based inkjet printing of flexible bioelectronic circuits and sensors," Proc. SPIE 8612, Micromachining and Microfabrication Process Technology XVIII, 861204 (9 March 2013); https://doi.org/10.1117/12.2003936