| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
2D Materials – Preparation, Properties, Modeling & Applications
|
| Presentation Title |
Wafer-Scale Integration and Extraordinary Functional Properties of Q-Carbon Thin Films |
| Author(s) |
Naveen Narasimhachar Joshi, Pranay Kalakonda, Roger Narayan, Jagdish Narayan |
| On-Site Speaker (Planned) |
Naveen Narasimhachar Joshi |
| Abstract Scope |
We report the formation of Q-carbon thin films with wafer-scale integration via the PECVD technique and describe their outstanding functional properties. The structure, morphology, and bonding characteristics in Q-carbon were thoroughly investigated by Raman, XPS, TEM-EDS, and EELS studies, indicating a higher sp3 content (> 75%) in films, a characteristic feature of Q-carbon structures. We propose a detailed mechanism to describe the formation of Q-carbon thin films via the low-energy ion bombardment in the PECVD process. The isothermal magnetization measurements reveal a robust ferromagnetic ordering in Q-carbon with a coercivity of ~100 Oe at 300 K. Further, we show that silicon doping in Q-carbon enhances its antimicrobial properties by up to 57%, outweighing the performance of diamond-like carbon coatings. Thus, wafer-scale integration and discovery of exceptional functionalities in Q-carbon open new avenues for wafer-scale growth of epitaxial diamond films and applications in magnetic sensing and biomedical devices. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Thin Films and Interfaces, Magnetic Materials, Surface Modification and Coatings |