| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
2D Materials – Preparation, Properties, Modeling & Applications
|
| Presentation Title |
Synthesis and Characterization of Q-carbon Layer Growth on 3D Nanostructures |
| Author(s) |
Sumeer Khanna, Siba Sahoo, Jagdish Narayan, Roger Narayan |
| On-Site Speaker (Planned) |
Sumeer Khanna |
| Abstract Scope |
We report the fabrication of 3D nanostructure arrays by direct laser write technique which are subsequently phase transformed by two-step annealing process involving rapid thermal annealing (RTA) and pulse laser annealing (PLA) techniques. The RTA pyrolysis technique leads to direct graphitization of amorphous carbon (photopolymer) and the formation of Q-carbon layer on Si (100) is shown later by highly non-equilibrium laser synthesis. The presence of 2D graphitic and Q-carbon film (phases) is confirmed by confocal Raman spectroscopy relating to the sp2 (2D layer) and 3D sp3 tetrahedral bonding respectively. High-resolution scanning electron microscopy (HR-SEM) imaging reveals the specialized nanostructure features of Q-carbon ball formation. Electron energy loss spectra (EELS) from transmission electron microscopy (HR-TEM) provides further sp3 bonding information. Finally, we verify presence of ferromagnetic domains using superconducting quantum interference device (SQUID) magnetometry measurements. The electrical and optical properties of Q-carbon nanostructures are also characterized and discussed in this report. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Thin Films and Interfaces, Nanotechnology, Electronic Materials |