Volume 110, Number 3, May 2015
|Number of page(s)||6|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||18 May 2015|
Visualization of topological landscape in shear-flow dynamics of amorphous solids
1 WPI Advanced Institute for Materials Research, Tohoku University - Sendai 980-8577, Japan
2 Office of Society-Academia Collaboration for Innovation, Kyoto University - Gokasho, Uji, Kyoto 611-0011, Japan
3 Graduate School of Information Sciences, Tohoku University - Sendai 980-8579, Japan
4 State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University - Shanghai 200030, PRC
Received: 19 August 2014
Accepted: 27 April 2015
A potential energy landscape (PEL) gives rise to diverse non-equilibrium dynamics in complex systems. In this study, we visualize the topological landscape of a steady-state flow under shear deformation in a model metallic glass. We use the “state space network” as the best predictor of state transitions in terms of statistical model selection. The proposed scheme visualizes the underlying PEL regarding α transitions associated with irreversible cage-breaking events as the cooperative motion of clusters. By characterizing the topological property of the state space network, we observe characteristics of a small-world network. The proposed scheme has a significant potential to enable the understanding of the underlying mechanisms of glass physics, and is analogous to biological networks.
PACS: 81.05.Kf – Glasses (including metallic glasses) / 02.70.Ns – Molecular dynamics and particle methods / 02.50.-r – Probability theory, stochastic processes, and statistics
© EPLA, 2015
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