Topological melting in networks of granular materials

Alalwan, Najlaa and Arenas, Alex and Estrada, Ernesto (2019) Topological melting in networks of granular materials. Journal of Mathematical Chemistry, 57 (3). 875–894. ISSN 0259-9791 (https://doi.org/10.1007/s10910-018-0988-0)

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Abstract

Granular materials represent a vast category of particle conglomerates with many areas of industrial applications. Here we represent these materials by graphs which capture their topological organization and ordering. Then, using the communicability function—a topological descriptor representing the thermal Green function of a network of harmonic oscillators—we prove the existence of a universal topological melting transition in these graphs. This transition resembles the melting process occurring in solids. We show here that crystalline-like granular materials melts at lower temperatures and display a sharper transition between solid to liquid phases than the random spatial graphs, which represent amorphous granular materials. In addition, we show the evolution mechanism of melting in these granular materials. In the particular case of crystalline materials the process starts by melting a central core of the crystal which then growth until the whole material is in the liquid phase. We provide experimental confirmation from published literature about this process.

  • Item type:Article
    ID code:70922
    Dates:
    Date
    Event
    31 March 2019
    Published
    3 December 2018
    Published Online
    28 November 2018
    Accepted
    Notes:This is a post-peer-review, pre-copyedit version of an article published in Journal of Mathematical Chemistry. The final version is available online at: https://doi.org/10.1007/s10910-018-0988-0
    Subjects:Science > Mathematics
    Department:Faculty of Science > Mathematics and Statistics
    Depositing user: Pure Administrator
    Date deposited:16 Dec 2019 16:45
    Last modified:09 Apr 2024 01:12
    URI:https://strathprints.strath.ac.uk/id/eprint/70922
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