Computer simulations of glasses: the potential energy landscape

Z Raza, B Alling, IA Abrikosov - Journal of Physics: Condensed …, 2015 - iopscience.iop.org
We review the current state of research on glasses, discussing the theoretical background
and computational models employed to describe them. This article focuses on the use of the …

Effect of the molar volume on the elastic properties of vinylic polymers: A static molecular modeling approach

N Metatla, A Soldera - Macromolecular theory and simulations, 2011 - Wiley Online Library
The effect of the molar volume on the mechanical properties of three polymers is computed
using molecular mechanics. It is demonstrated that elastic properties significantly depend on …

[HTML][HTML] Communication: Newton homotopies for sampling stationary points of potential energy landscapes

D Mehta, T Chen, JD Hauenstein… - The Journal of chemical …, 2014 - pubs.aip.org
One of the most challenging and frequently arising problems in many areas of science is to
find solutions of a system of multivariate nonlinear equations. There are several numerical …

Lumping analysis for the prediction of long-time dynamics: From monomolecular reaction systems to inherent structure dynamics of glassy materials

N Lempesis, DG Tsalikis, GC Boulougouris… - The Journal of …, 2011 - pubs.aip.org
In this work we develop, test, and implement a methodology that is able to perform, in an
automated manner,“lumping” of a high-dimensional, discrete dynamical system onto a lower …

Exploring the potential energy landscape of the Thomson problem via Newton homotopies

D Mehta, T Chen, JWR Morgan… - The Journal of chemical …, 2015 - pubs.aip.org
Locating the stationary points of a real-valued multivariate potential energy function is an
important problem in many areas of science. This task generally amounts to solving …

An inversion-relaxation approach for sampling stationary points of spin model Hamiltonians

C Hughes, D Mehta, DJ Wales - The Journal of chemical physics, 2014 - pubs.aip.org
Sampling the stationary points of a complicated potential energy landscape is a challenging
problem. Here, we introduce a sampling method based on relaxation from stationary points …

Temperature accelerated dynamics in glass-forming materials

DG Tsalikis, N Lempesis… - The Journal of …, 2010 - ACS Publications
In this work we propose a methodology for improving dynamical sampling in molecular
simulations via temperature acceleration. The proposed approach combines the novel …

Temporal disconnectivity of the energy landscape in glassy systems

N Lempesis, GC Boulougouris… - The Journal of Chemical …, 2013 - pubs.aip.org
An alternative graphical representation of the potential energy landscape (PEL) has been
developed and applied to a binary Lennard-Jones glassy system, providing insight into the …

Network topology of the states probed by a glassy polymer during physical aging

GG Vogiatzis, LCA van Breemen… - … Theory and Simulations, 2019 - Wiley Online Library
Trajectories of a long‐chain atactic polystyrene system, obtained from long Molecular
Dynamics simulations in the glassy state, are mapped onto a time series of inherent …

Tracking the dynamics of systems evolving through infrequent transitions in a network of discrete states

DN Theodorou, N Lempesis… - … Methods for Dynamics …, 2012 - books.google.com
Many physicochemical, materials, and biological systems whose dynamics is too slow to be
addressed via conventional molecular dynamics (MD) simulations can be considered as …