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Abstract: Two types of homogeneous surface nanobubble populations, created by differentmeans, are analyzed statistically on both their sizes and spatial positions. Inthe first type created by droplet-deposition, case A the bubble size R isfound to be distributed according to a generalized gamma law with a preferredradius R*=20 nm. The radial distribution function shows a preferred spacing at~5.5 R*. These characteristics do not show up in comparable Monte-Carlosimulations of random packings of hard disks with the same size distributionand the same density, suggesting a structuring effect in the nanobubbleformation process. The nanobubble size distribution of the second populationtype created by ethanol-water exchange, case B is a mixture of two clearlyseparated distributions, hence, with two preferred radii. The local ordering isless significant, due to the looser packing of the nanobubbles.



Autor: Bram M. Borkent, Holger Schoenherr, Gerard Le Caer, Benjamin Dollet, Detlef Lohse

Fuente: https://arxiv.org/



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