46 citations · 61 across the 10 of their papers we have counts for
8 papers · 1 filter
Morphology and Dynamics of Self-interstitial Clusters in Irradiated Nickel
Ajay Annamareddy, Ibrahim Momohjimoh, Hangyu Li +3
Self-interstitial atom (SIA) clustering is a key early step in radiation damage evolution in face-centered cubic (FCC) metals, governing defect transport, recombination, and the lo…
Accurate Evaluation of Nanoscale Spatiotemporal Dynamics with Electron Correlation Microscopy
Po-Cheng Kung, Ajay Annamareddy, Mark D. Ediger +2
Electron correlation microscopy (ECM) can measure materials dynamics with nanoscale spatial resolution from intensity correlation functions. However, adopting X-ray photon correlat…
Asymmetric Energy Landscapes Control Diffusion in Glasses
Ajay Annamareddy, Bu Wang, Paul M. Voyles +2
While diffusion in crystalline solids is quantitatively understood through defect-mediated atomic hops, no comparable quantitative framework exists for glasses. In these systems, t…
How close are the classical two-body potentials to ab initio calculations? Insights from linear machine learning based force matching
Zheng Yu, Ajay Annamareddy, Dane Morgan +1
In this work, we propose a linear machine learning force matching approach that can directly extract pair atomic interactions from ab initio calculations in amorphous structures. T…
Distribution of atomic rearrangement vectors in a metallic glass
Ajay Annamareddy, Bu Wang, Paul M. Voyles +1
Short-timescale atomic rearrangements are fundamental to the kinetics of glasses and frequently dominated by one atom moving significantly (a rearrangement), while others relax onl…
Compositional Trends in Surface Enhanced Diffusion in Lead Silicate Glasses
Ajay Annamareddy, Manel Molina-Ruiz, Donez Horton-Bailey +4
In this work, we use molecular dynamics simulations to study the enhancement of surface over bulk diffusion (surface enhanced diffusion) in (PbO)x(SiO2)1-x glasses. This work is mo…
Mechanisms of bulk and surface diffusion in metallic glasses determined from molecular dynamics simulations
Ajay Annamareddy, Paul M. Voyles, John Perepezko +1
The bulk and surface dynamics of Cu50Zr50 metallic glass were studied using classical molecular dynamics (MD) simulations. As the alloy undergoes cooling, it passes through liquid,…
Factors correlating to enhanced surface diffusion in metallic glasses
Ajay Annamareddy, Yuhui Li, Lian Yu +2
The enhancement of surface diffusion (DS) over the bulk (DV) in metallic glasses (MGs) is well documented and likely to strongly influence the properties of glasses grown by vapor…