Origin of Non-Gaussian Velocity Distribution Found in Freestanding Graphene Membranes

Autor: Yue Kai, Wenlong Xu, Bailin Zheng, Nan Yang, Kai Zhang, P. M. Thibado
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Complexity, Vol 2019 (2019)
Druh dokumentu: article
ISSN: 1076-2787
1099-0526
DOI: 10.1155/2019/6101083
Popis: In this study, an analytic derivation is made for the truncated Cauchy-Lorentz velocity distribution experimentally observed in freestanding graphene membranes. Three methods are used and discussed, including the Fokker-Planck-Kolmogorov equation, the maximum nonsymmetric entropy principle, and the Bayesian inference. From these results, a physical mechanism is provided for the non-Gaussian velocity distribution in terms of carbon atom arrangement in freestanding graphene. Moreover, a new theoretical foundation is proposed for future studies of the anomalous dynamics of carbon atoms in graphene membranes.
Databáze: Directory of Open Access Journals
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