| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Characterization of Minerals, Metals and Materials 2024: Process-Structure-Property Relations and New Technologies
|
| Presentation Title |
Five-parameter Grain Boundary Character and Surface Character of Gold Nanoparticles Using Three-dimensional Orientation Mapping in the Transmission Electron Microscope |
| Author(s) |
Wanquan Zhu, Guilin Wu, Andrew Godfrey, Søren Schmidt, Qiongyao He, Zongqiang Feng, Tianlin Huang, Ling Zhang, Xiaoxu Huang |
| On-Site Speaker (Planned) |
Wanquan Zhu |
| Abstract Scope |
Nanoparticles exhibit unusual and desirable properties attributed to their high surface area and large length of grain-boundary surface terminations per volume. The properties of nanoparticles are directly influenced by their surface and grain boundary characteristics. In this study, three-dimensional orientation mapping in the transmission electron microscope (3D-OMiTEM) was utilized to reveal the crystallographic character of grain boundaries and surface of gold nanoparticles deposited on an amorphous carbon film. It is found that the microstructure predominantly comprises Σ 3, Σ 9, Σ 11 and Σ 27a boundaries. And the surface distribution of nanoparticles exhibits a slight peak on {111} planes and a valley on {205} planes. The grain boundary population and surface population are generally inversely correlated to the grain boundary energy and surface energy, respectively. The characterization capability of 3D-OMiTEM, which combines the 3D morphology and 3D crystallography, can provide valuable insights into the structure-property relationship of nanoparticles. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Thin Films and Interfaces, Characterization, Nanotechnology |