Abstract：
:Liquid foams are classified into a dry foam and a wet foam, empirically judging from the liquid fraction or the shape of the gas bubbles. It is known that physical properties such as elasticity and diffusion are different between the dry foam and the wet foam. Nevertheless, definitions of those states have been vague and the dry-wet transition of foams has not been clarified yet. Here we show that the dry-wet transition is closely related to rearrangement of the gas bubbles, by simultaneously analysing the shape change of the bubbles and that of the entire foam in two dimensional foam. In addition, we also find a new state in quite low liquid fraction, which is named "superdry foam". Whereas the shape change of the bubbles strongly depends on the change of the liquid fraction in the superdry foam, the shape of the bubbles does not change with changing the liquid fraction in the dry foam. Our results elucidate the relationship between the transitions and the macroscopic mechanical properties.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Furuta Y,Oikawa N,Kurita Rdoi
10.1038/srep37506subject
Has Abstractpub_date
2016-11-22 00:00:00pages
37506issn
2045-2322pii
srep37506journal_volume
6pub_type
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