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 |
Process–Structure–Function relationships in laser-induced graphene for electrochemical sensing Applications |
| Author(s) |
Gustavo Miliao, Jonathan C Claussen, Raquel Soares, Zachary Johnson, Cicero C Pola, Carmen Gomes |
| On-Site Speaker (Planned) |
Carmen Gomes |
| Abstract Scope |
Graphene-based electrodes hold significant promise for electrochemical sensing. Laser-induced graphene (LIG) is a direct laser scribing method that converts spł-carbon-rich substrates into conductive sp2-hybridized carbon found in graphene. In this work, we systematically optimized LIG fabrication by tuning laser parameters such as power, focus, DPI, and scan repetitions. We demonstrate that tuning the surface chemistry and wettability of LIG significantly enhances sensor performance, increasing sensitivity and reducing signal drift. The fabricated LIG electrodes have been used across multiple applications, including foodborne pathogen detection and contaminants in food, environmental monitoring in soil and water, and monitoring of biomarkers for health diagnostics (salivary and urinary lactate, potassium, and ammonium). Additionally, LIG-based open microfluidic platforms have been developed for multiple, all-in-one analyte detection. All sensors demonstrated relevant detection limits and linear sensing ranges in real-world samples validated using standard methods. Such sensing results demonstrate the potential of LIG for point-of-service electroanalytical sensing platforms. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Electronic Materials, Nanotechnology |