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Applicant:
Indian Institute of Technology (IIT) Patna 
Author:
Tamoghna Chakrabarti , Rajdip Mukherjee 
Corresponding Authors:
Tamoghna Chakrabarti 
DOI #:
https://doi.org/10.1016/j.commatsci.2019.109115 
Title:
Effect of Heterogeneous Particle Size on Nanostructure Evolution: A Phase-field Study 
Journal:
Computational Materials Science 
Year:
2019 
Volume:
169 
Page:
NA 
Keywords:
Nano-particle, Inverse Ostwald ripening, Thin film, Phase-field, Nano-porous 
Abstract:
The evolution pathways of nanostrutures at high temperature depends on different thermodynamic (e.g. interfacial energies) and kinetic parameters (e.g. interface diffusivities). In nano-regime, difference in interface curvature provides essential driving force for nanostructure evolution. Phase-field method is a model for interfaces which can correctly capture capillarity-driven phenomena. In this work, we employ a three dimensional phase-field model to study nanostructure evolution for (a) two/three particle (nano-size) systems and (b) nanoparticles arranged in multilayers, for different interface diffusivities and particle sizes. For three particle systems, different unconventional evolution pathways, such as seperation between particles and inverse Ostwald ripening are observed. For multilayer systems, these evolution pathways are found to be interacting in a complex manner. This study provides necessary insights for tailoring nanoporous structures by judiciously choosing initial size distribution of nanoparticles in a multilayer setting 
Entered by:
Venkata Dantham on 2020-08-04 
 
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