About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
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Computational Thermodynamics and Kinetics
|
Presentation Title |
Morphological Evolution of Surface Instabilities during Vapor Co-deposition of Phase-separating Alloy Films |
Author(s) |
Rahul Raghavan, Pei En Chen, Yang Jiao, Kumar Ankit |
On-Site Speaker (Planned) |
Kumar Ankit |
Abstract Scope |
The current understanding of how interfacial energies and surface contact angles influence nanostructural evolution and associated defects in vapor-deposited films is fairly limited. In view of this knowledge gap, we adopt a three-dimensional phase-field approach to numerically investigate the role of seed morphology and contact angles on the morphological evolution of surface protuberances in phase-separating alloy films. Film nanostructures are quantified using a statistical morphological descriptor, namely, n-point polytope functions, which provides a host of insights into the kinetic pathways while unraveling a hidden length scale correlation present at all contact angles. Using this technique, we decompose different symmetry features into canonical polytope symmetry groups to detect potentially distinct convergence and dynamics of evolution of different symmetry groups that comprise the film nanostructure. |
Proceedings Inclusion? |
Planned: |
Keywords |
Phase Transformations, Computational Materials Science & Engineering, Thin Films and Interfaces |