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 |
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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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