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 |
Scalable Fabrication of LIGMIS: Laser-Induced Graphene Microfluidic Integrated Sensors for Point-of-Need Monitoring |
| Author(s) |
Nathan Jared, Gustavo Miliao, Ethan Leung, Griffin Ellis, Carmen Gomes, Jonathan Claussen |
| On-Site Speaker (Planned) |
Jonathan Claussen |
| Abstract Scope |
Microfluidic–electrochemical integration is critical for real-time analyte detection in biomedical and environmental settings. Conventional paper-based platforms using wax printing or photolithography face scalability and conductivity limitations. We present Laser-Induced Graphene Microfluidic Integrated Sensors (LIGMIS), a one-step, maskless process that simultaneously forms hydrophilic microchannels, hydrophobic barriers, and conductive electrodes from LIG on polyimide substrates. LIGMIS incorporates features such as bifurcated reservoirs for capillary flow control, surface coatings to preserve wettability, and modular sensing zones for targeted nanoparticle metallization and biofunctionalization. The architecture is compatible with flexible and wearable substrates, expanding its utility for decentralized diagnostics. We demonstrate its use for soil and water nutrient ions, pesticide residues, and salivary biomarkers (calcium, uric acid). This scalable, low-cost platform enables point-of-need sensing across diverse environments. LIG and printed graphene properties are tuned with the laser to enhance sensor surface area, electrical conductivity, and sensor stability for improved performance and reliability. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Electronic Materials, Nanotechnology |