Topological Control on the Structural Relaxation of Atomic Networks under Stress
Name
PhysRevLett.119.035502.pdf
Size
444.22 KB
Format
Adobe PDF
Checksum (MD5)
0b847e2c269d656bc3f9b141205c3b87
Author(s)
Bauchy, Mathieu
Wang, Mengyi
Yu, Yingtian
Wang, Bu
Krishnan, N. M. Anoop
Masoero, Enrico
Ulm, Franz-Josef
Pellenq, Roland Jm
Date Issued
July 2017
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Bauchy, Mathieu et al. “Topological Control on the Structural Relaxation of Atomic Networks under Stress.” Physical Review Letters 119.3 (2017): n. pag.
Version
Final published version
Abstract
Upon loading, atomic networks can feature delayed irreversible relaxation. However, the effect of composition and structure on relaxation remains poorly understood. Herein, relying on accelerated molecular dynamics simulations and topological constraint theory, we investigate the relationship between atomic topology and stress-induced structural relaxation, by taking the example of creep deformations in calcium silicate hydrates (C─S─H), the binding phase of concrete. Under constant shear stress, C─S─H is found to feature delayed logarithmic shear deformations. We demonstrate that the propensity for relaxation is minimum for isostatic atomic networks, which are characterized by the simultaneous absence of floppy internal modes of relaxation and eigenstress. This suggests that topological nanoengineering could lead to the discovery of nonaging materials.
MIT Department
Massachusetts Institute of Technology. Department of Civil and Environmental Engineering
MultiScale Materials Science for Energy and Environment, Joint MIT-CNRS Laboratory
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevLett.119.035502
