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Topological vectors as a fingerprinting system for 2D-material flake distributions
npj 2D Materials and Applications ( IF 9.7 ) Pub Date : 2021-05-14 , DOI: 10.1038/s41699-021-00234-z
Joyce C. C. Santos , Mariana C. Prado , Helane L. O. Morais , Samuel M. Sousa , Elisangela Silva-Pinto , Luiz G. Cançado , Bernardo R. A. Neves

The production of 2D material flakes in large quantities is a rapidly evolving field and a cornerstone for their industrial applicability. Although flake production has advanced in a fast pace, its statistical characterization is somewhat slower, with few examples in the literature which may lack either modelling uniformity and/or physical equivalence to actual flake dimensions. The present work brings a methodology for 2D material flake characterization with a threefold target: (i) propose a set of morphological shape parameters that correctly map to actual and relevant flake dimensions; (ii) find a single distribution function that efficiently describes all these parameter distributions; and (iii) suggest a representation system—topological vectors—that uniquely characterizes the statistical flake morphology within a given distribution. The applicability of such methodology is illustrated via the analysis of tens of thousands flakes of graphene/graphite and talc, which were submitted to different production protocols. The richness of information unveiled by this universal methodology may help the development of necessary standardization procedures for the imminent 2D-materials industry.



中文翻译:

拓扑向量作为二维材料薄片分布的指纹识别系统

二维材料薄片的大量生产是一个快速发展的领域,也是其工业实用性的基石。尽管薄片的生产已快速发展,但其统计表征却有些慢,文献中很少有可能缺乏建模均匀性和/或与薄片实际尺寸物理等效的示例。当前的工作带来了具有三重目标的二维材料薄片表征的方法:(i)提出了一组形态学形状参数,可以正确地映射到实际和相关的薄片尺寸;(ii)找到一个可以有效描述所有这些参数分布的分布函数;(iii)提出一种表示系统-拓扑向量-可以在给定分布内唯一表征统计薄片状形态。通过分析成千上万的石墨烯/石墨和滑石粉片,说明了这种方法的适用性,这些片片已提交给不同的生产方案。这种通用方法揭示的丰富信息可能有助于为即将到来的2D材料行业开发必要的标准化程序。

更新日期:2021-05-14
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