About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Printed Electronics and Additive Manufacturing of Advanced Functional Materials and Devices—From Processing Concepts to Applications
|
| Presentation Title |
Hybrid Integration of Laser-Induced Graphene and Direct-Ink-Written Silver for Flexible Electrochemical Sensors |
| Author(s) |
Rourke Sylvain, Hugh Hanlon, Verdict Vera, Smitha Rao, Yixin Liu |
| On-Site Speaker (Planned) |
Yixin Liu |
| Abstract Scope |
We present a scalable fabrication strategy for flexible electrochemical sensors that integrates laser-induced graphene (LIG) with direct-ink-written (DIW) silver. Porous, conductive LIG was patterned on polyimide substrates via ambient CO2 laser scribing. Conductive silver ink was then printed using a DIW process optimized for adhesion and low-temperature curing, forming robust carbon-metal junctions. A three-electrode configuration was implemented with LIG as the working and counter electrodes, and DIW silver as the pseudo-reference, leads, and contact pads to enhance electrical performance and durability. A batch-printing protocol was developed to fabricate nine sensors per batch, significantly improving device-to-device and batch-to-batch reproducibility. The hybrid electrodes were further functionalized with nanocatalysts and molecularly imprinted polymers, demonstrating ultra-high sensitivity for glucose and cortisol detection. This approach provides a cost-effective and scalable platform for producing durable, high-performance biosensors, suitable for wearable and other emerging health monitoring applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Electronic Materials, Nanotechnology, Polymers |