About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior at the Nanoscale VIII
|
| Presentation Title |
Micromechanical properties of single crystalline diamonds beyond fracture |
| Author(s) |
Ming Chen, Ralph Spolenak, Jeffrey M. Wheeler |
| On-Site Speaker (Planned) |
Ming Chen |
| Abstract Scope |
As the hardest known material, diamond represents the benchmark for the ultimate strength of materials. Its exceptional thermal conductivity, wide bandgap, and high carrier mobility also make it a promising semiconductor. Single crystalline (SC) diamonds are extremely brittle, often fracturing catastrophically under loading. Recent advances in strain engineering highlight opportunities to tailor diamond’s functional properties for microelectronics and quantum technologies. In this study, we investigate the micromechanical response of SC diamonds using in-situ microcompression inside a scanning electron microscope across a range of temperatures. Post-deformation analyzed via high-resolution transmission electron microscopy (HRTEM) reveals nanoscale defect structures that correlate with the observed mechanical behavior and measured mechanical data. We elucidate the effects of doping, crystalline orientation, and temperature on mechanical properties and associated defect behavior in SC diamonds, with implications for designing tougher, damage-tolerant hard materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Characterization, Nanotechnology |