Deformation, restructuring, and un-jamming of concentrated droplets in large-amplitude oscillatory shear flows

Jung-Ren Huang, Thomas G. Mason

研究成果: 雜誌貢獻文章

9 引文 斯高帕斯(Scopus)

摘要

We employ large-amplitude shear oscillation light scattering (SOLS) to study average droplet deformation and positional restructuring in concentrated uniform oil-in-water emulsions. Three dimensionless scattering intensity anisotropy factors, defined using the primary and secondary Bragg peaks, which can result from partial shear-induced ordering, reflect the phase-dependent droplet deformation and tilting. These factors distinguish the soft force-chain buckling regime, where shear disorders the droplets, from the sliding hexagonally-close-packed layer regime, where shear induces positional order. Near and above the jamming limit of spherical particles, the shear-induced structures depend sensitively on the droplet volume fraction and the shear history.

原文英語
頁(從 - 到)2208-2214
頁數7
期刊Soft Matter
5
發行號11
DOIs
出版狀態已發佈 - 2009 七月 14

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics

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