Transport in a Stochastic Double Diffusivity Model


A recent study analyzed the role of stochastic perturbations on the interface dynamics of two interacting species within a double-diffusivity framework, involving double diffusion models. The model relied on a restricted translation–reflection (TR) symmetry manifold, leading to a single variable description. The present study generalizes this model for a TR symmetry violating system that does not permit reduction to a single variable dynamics, leading to a hitherto unseen stochastic resonance (SR), a mechanism that indicates discrete, rather than a continuous, mode of energy transport. The SR exhibited by the model captures the signature fast transport observed in stochastically driven dynamics of nanopolycrystals, that previous deterministic models failed to emulate. We show that the speed of transfer relates to the strength of energy cross-correlations between the two diffusing species communicating through interface dynamics that eventually drives the energy throughput and identifies the role of stochasticity in nanopolycrystalline transport.

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Divisions: College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > Systems analytics research institute (SARI)
College of Engineering & Physical Sciences > School of Computer Science and Digital Technologies > Applied Mathematics & Data Science
College of Engineering & Physical Sciences > School of Computer Science and Digital Technologies
College of Engineering & Physical Sciences > Engineering for Health
College of Engineering & Physical Sciences > Aston Centre for Artifical Intelligence Research and Application
Additional Information: This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit Funding: The authors acknowledge financial support from the H2020-MSCA-RISE-2016 program, grant no. 734485 “Fracture Across Scales and Materials, Processes and Disciplines (FRAMED)”. The last author is grateful to the support of FAU through a Mercator Fellow arrangement
Uncontrolled Keywords: Double diffusion,Interface dynamics,Nanopolycrystal,Stochastic,Condensed Matter Physics,Mechanics of Materials,Mechanical Engineering
Publication ISSN: 1572-9648
Last Modified: 23 May 2024 07:25
Date Deposited: 25 Jul 2023 15:55
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Related URLs: https://link.sp ... -x#article-info (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2023-08-03
Published Online Date: 2023-08-03
Accepted Date: 2023-06-20
Authors: Chattopadhyay, Amit (ORCID Profile 0000-0001-5499-6008)
Aifantis, Elias
Parisis, Konstantinos
Konstantinidis, Avraam



Version: Accepted Version

Access Restriction: Restricted to Repository staff only


Version: Published Version

License: Creative Commons Attribution

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