Coalescence preference in densely packed microbubbles.

Abstract:

:A bubble merged from two parent bubbles with different size tends to be placed closer to the larger parent. This phenomenon is known as the coalescence preference. Here we demonstrate that the coalescence preference can be blocked inside a densely packed cluster of bubbles. We utilized high-speed high-resolution X-ray microscopy to clearly visualize individual coalescence events inside densely packed microbubbles with a local packing fraction of ~40%. The surface energy release theory predicts an exponent of 5 in a relation between the relative coalescence position and the parent size ratio, whereas our observation for coalescence in densely packed microbubbles shows a different exponent of 2. We believe that this result would be important to understand the reality of coalescence dynamics in a variety of packing situations of soft matter.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Kim Y,Lim SJ,Gim B,Weon BM

doi

10.1038/srep07739

subject

Has Abstract

pub_date

2015-01-13 00:00:00

pages

7739

issn

2045-2322

pii

srep07739

journal_volume

5

pub_type

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