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 Repjournal_title
Scientific reportsauthors
Kim Y,Lim SJ,Gim B,Weon BMdoi
10.1038/srep07739subject
Has Abstractpub_date
2015-01-13 00:00:00pages
7739issn
2045-2322pii
srep07739journal_volume
5pub_type
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