| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Printed Electronics and Additive Manufacturing: Advanced Functional Materials, Processing Concepts, and Emerging Applications
|
| Presentation Title |
Enhancing Electrical Conductivity of Laser-Induced Graphene Electrodes by Relasing and Dual-Wavelength Control |
| Author(s) |
Soumalya Ghosh, Moataz Abdulhafez, Thomas Kisiel, Mostafa Bedewy |
| On-Site Speaker (Planned) |
Soumalya Ghosh |
| Abstract Scope |
Laser-induced Graphene (LIG) is promising for various flexible electronics. Here, we show unprecedented process control by independently controlling speeds of multistep lasing sequence. We enhance the electrical conductivity by an order of magnitude (from around 0.14 Ω.cm to 0.08 Ω.cm). This modulates graphitization and optimizes surface morphology, allowing fine-tuning of conductivity and crystallinity. Our work provides insights into the fabrication of high performance microelectrodes using our multistep approach for electrochemical sensing. In addition, we show that utilizing a UV laser (356 nm) for initial pre-treatment, followed by an NIR laser (1064 nm) for final carbonization, we achieve high-quality carbonization (D/G ratio of 0.6 from Raman spectroscopy) without substrate damage. This new dual-wavelength technique enables the fabrication of miniaturized designs and the processing of substrates invisible to certain wavelengths, presenting a significant advancement in fabrication of implantable devices such as neural probes. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Electronic Materials, Nanotechnology, |