About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
2024 Technical Division Student Poster Contest
|
Presentation Title |
SPG-15: Mechanistic Investigation of Twinned Copper Nanowires as a Multi-functional Materials |
Author(s) |
Hsin-Yu Chen, Chien-Neng Liao |
On-Site Speaker (Planned) |
Hsin-Yu Chen |
Abstract Scope |
We have successfully controlled the density and orientation of twins in pulse-electrodeposited nano-twinned copper nanowires (nt-CuNWs) embedded in high aspect-ratio Cu vias (aspect ratio > 150) created by porous anodic aluminum oxide (AAO). We utilized in-situ/ex-situ TEM measurements from room temperature to 700 °C annealing and found a significang change in the twin boundary/grain boundary interface. To understand the underlying mechanism, molecular dynamics simulations were performed and we found that dislocation density decrease due to the existence of twin boundary. Besides thermal stability, the twinned Cu also exhibited special oxidation behavior in the twin boundary junction due to the special geometry, which was investigated by TEM and density functional theory (DFT). We believe the twin boundary can greatly change the intrinsic properties of materials, broaden their applicability and make materials multi-functional. |
Proceedings Inclusion? |
Undecided |
Keywords |
Copper / Nickel / Cobalt, Characterization, Modeling and Simulation |