About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Self-organizing Nano-architectured Materials
|
Presentation Title |
A General Elastic Model for Self-Assembled Metal-oxide Vertical Aligned Nanocomposite (VAN) Thin Films |
Author(s) |
Kyle Starkey , Ahmad Ahmad, Juanjuan Lu , Robynne-Lynn Paldi , Haiyan Wang, Anter El-Azab |
On-Site Speaker (Planned) |
Ahmad Ahmad |
Abstract Scope |
In recent years in the field of nanotechnology, complex functional metal-oxide-based vertically aligned nanocomposite (VAN) thin films have gained interest due to their interesting physical properties and strong anisotropy. Despite the experimental demonstrations of various metal-oxide VAN films, modeling efforts that capture the complex two-phase structures and the mechanical coupling along the interfaces are very scarce. We present a new model that simulates the elastic deformation of two-phase nanocomposites and the mechanical coupling as a function of the interfacial density of pillar/matrix, pillar/substrate, and matrix/substrate, considering the epitaxial relationships between the two phases. The model accounts for the lattice mismatch between materials, curvature effects at the interface, and common line forces at the intersection of phase boundaries using concentrated surface and line body forces. The model can be used to predict a favorable potential two-phase system for future experimental demonstrations by calculating the total thermodynamic energy of different film morphologies. |
Proceedings Inclusion? |
Undecided |
Keywords |
Nanotechnology, Thin Films and Interfaces, Modeling and Simulation |