About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
2D Materials – Preparation, Properties, Modeling & Applications
|
| Presentation Title |
Epitaxial diamond grown on Si substrates using a 2D buffer layer of Yttria stabilised Zirconia (YSZ). |
| Author(s) |
Siba Sundar Sahoo, Fahad Munshe, Sriram Srinivasan, Sachin Kadian, Roger Narayan, Jagdish Narayan |
| On-Site Speaker (Planned) |
Siba Sundar Sahoo |
| Abstract Scope |
We provide insights pertaining to ultrafast melting and quenching using ArF excimer laser, which can lead to the formation of microdiamonds and Q-carbon composites from a-C films. The distinct structures of Q-carbon have a higher density (>60%) than diamond and can act as a seed layer for diamond growth by CVD techniques. In the current work, we have optimised laser melting and quenching times for the conversion of a-C to achieve microdiamond crystallites, which grow epitaxially to [100]YSZ 2D films. The study uses laser-matter interaction simulations coupled with atomistic ab-initio modelling to study the conversion methodology of a-C to Q-carbon and diamond. We carried out Raman spectroscopy to understand the composition of Q-carbon-diamond composite, and HAADF Z-contrast imaging to validate the phase structure. We also used HFCVD to grow a large area diamond from the 2D film and study the thermal and electronic properties of the diamond film grown heteroepitaxially. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Thin Films and Interfaces, Nanotechnology, Modeling and Simulation |