3D printed sensors offer tremendous possibilities towards creating inexpensive devices for environmental contaminant detection that are simple and quick. This presentation will describe development and optimization of 3D printed hydrogel-based biosensors with incorporated receptor molecules and transduction interfaces.  The sensors display target specific detection capabilities with improved sensitivity, stability and disposability as compared to existing sensors. To 3D print these biosensors, an extrusion-based 3D bioprinter and computer aided designing software were used along with a novel bioink formulation, which contains nanoparticles having tunable redox, optical and catalytic properties. The optimum hydrogel composite provides good mechanical properties to the printed biosensors enabling them to be used in a wide range of applications. Further, the proposed biosensors can analyze low analyte concentrations, are reagent-less and are highly portable making them appealing in the area of wearable devices, flexible and portable bioelectronics, field monitoring and lab-on-chip technology. Examples of applications of this technology for food safety and environmental monitoring will be provided.

Scalable 3D printed hydrogel-based biosensors for environmental applications

2019 Spring National Meeting

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