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 |
High-temperature annealing of direct-laser-written 3D structures for phase transformation into nanodiamond and Q-carbon |
| Author(s) |
Sumeer Khanna, Kishan Kumawat, Jagdish Narayan, Roger Narayan |
| On-Site Speaker (Planned) |
Sumeer Khanna |
| Abstract Scope |
Direct-laser-writing (DLW) or 3D printing is rapidly evolving as a versatile method for fabricating microscale and nanoscale complex 3D and 2D planar polymer structures for quantum computing, superconducting devices, selective coatings, and biomedical sensors. Here, we present varying planar block patterns, vertical rods, buckyball, waveguide and pillar-and-scaffold geometric patterned structures. The novelty of our work is optimization of structural dimensions and fine tuning of process recipes incorporating two-step high-temperature thermal annealing (carbonization) and subsequent PLA. Carbonization involved rapidly heating structures up to 700-900 deg. C for 1-3 minutes in inert Ar in a tube furnace and consequent fast quenching to room temperature. Phase transformation from amorphous carbon to highly ordered crystalline nanodiamond or amorphous Q-carbon was obtained by controlling undercooling of liquid carbon formed during the highly non-equilibrium pulsed laser annealing (PLA) process. Nanodiamond phase developed shows promising optical, electrical, magnetic and mechanical properties which are ideal for aforesaid applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nanotechnology, Electronic Materials, Thin Films and Interfaces |