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Non-Markovian Methods in Glass Transition.

Authors
  • Torregrosa Cabanilles, Constantino1
  • Molina-Mateo, José1
  • Sabater I Serra, Roser1, 2
  • Meseguer-Dueñas, José María1, 2
  • Gómez Ribelles, José Luis1, 2
  • 1 Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, 46022 València, Spain. , (Spain)
  • 2 CIBER-BBN, Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine, 46022 València, Spain. , (Spain)
Type
Published Article
Journal
Polymers
Publisher
MDPI AG
Publication Date
Sep 02, 2020
Volume
12
Issue
9
Identifiers
DOI: 10.3390/polym12091997
PMID: 32887333
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

A model for the heterogeneity of local dynamics in polymer and other glass-forming materials is provided here. The fundamental characteristics of the glass transition phenomenology emerge when simulating a condensed matter open cluster that has a strong interaction with its heterogeneous environment. General glass transition features, such as non-exponential structural relaxations, the slowing down of relaxation times with temperature and specific off-equilibrium glassy dynamics can be reproduced by non-Markovian dynamics simulations with the minimum computer resources. Non-Markovian models are shown to be useful tools for obtaining insights into the complex dynamics involved in the glass transition phenomenon, including whether or not there is a need for a growing correlation length or the relationship between the non-exponentiality of structural relaxations and dynamic heterogeneity.

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