About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Printed Electronics and Additive Manufacturing of Advanced Functional Materials and Devices—From Processing Concepts to Applications
|
| Presentation Title |
Epitaxial nanodiamond and Q-carbon nanoballs designed structures formed by direct-laser-writing for quantum sensing |
| Author(s) |
Sumeer Khanna, Kishan Kumawat, Jagdish Narayan, Roger Narayan |
| On-Site Speaker (Planned) |
Sumeer Khanna |
| Abstract Scope |
We have created patterned structures of Q-carbon nanoballs and nanodiamonds by direct-laser-writing (DLW) of polymers, carbonization, and pulsed laser annealing. Specifically, we have written varying 2D and 3D patterns of polymeric structures by DLW process based on two-photon polymerization (2PP). These carbonized structures were turned into Q-carbon nanoballs or nanodiamonds by controlling the undercooling during nanosecond laser melting and fast non-equilibrium quenching. The size range (average) of nanoballs was determined to be 10-20 nm, and it was 3-7 nm for nanodiamonds. The laser annealed structures were characterized by Raman and XPS for bonding characteristics, and HRTEM/STEM (HAADF) for detailed structural characterization. The Raman spectra from Q-carbon nanoballs confirmed the characteristic double hump centered around the 1340 cm-1 and 1500 cm-1 peaks. These patterned Q-carbon nanoballs and nanodiamond structures will lead to new applications ranging from targeted drug delivery to quantum nano-sensing and quantum communication through magnons. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Electronic Materials, Nanotechnology, Polymers |