About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
2D Materials – Preparation, Properties, Modeling & Applications
|
| Presentation Title |
Laser-Induced Bandgap Engineering of Graphitic Carbon Surfaces |
| Author(s) |
Naveen Narasimhachar Joshi, Sriram Srinivasan, Pranay Kalakonda, Fahad Munshe, John Prater, Roger Narayan, Jagdish Narayan |
| On-Site Speaker (Planned) |
Naveen Narasimhachar Joshi |
| Abstract Scope |
In this talk, I will present how nanosecond pulsed laser annealing (NPLA) enables non-equilibrium engineering of graphitic carbon surfaces with tunable electronic and optical properties. By precisely controlling laser energy density and the associated undercooling during rapid melt-quench processing, the near-surface bonding configuration can be systematically modified, allowing controlled graphitization and bandgap engineering without altering the bulk material. Structural evolution is investigated using Raman spectroscopy and X-ray photoelectron spectroscopy, while UV-Vis absorption and photoluminescence measurements reveal systematic changes in optical bandgap, disorder, and defect-induced electronic states. The relationship between bonding evolution and optical response is established, demonstrating a versatile pathway for tailoring functional carbon surfaces. The process is fully compatible with conventional semiconductor and photovoltaic manufacturing, providing a scalable strategy for integrating engineered carbon materials into next-generation optoelectronic, photonic, sensing, and radiation-detection technologies. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Thin Films and Interfaces, Surface Modification and Coatings, Electronic Materials |