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  Faceting and flattening of emulsion droplets : a mechanical model

García-Aguilar, I., Fonda, P., Sloutskin, E., & Giomi, L. (2021). Faceting and flattening of emulsion droplets: a mechanical model. Physical Review Letters, 126(3): 038001. doi:10.1103/PhysRevLett.126.038001.

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 Creators:
García-Aguilar, Ireth, Author
Fonda, Piermarco1, Author              
Sloutskin, Eli, Author
Giomi, Luca, Author
Affiliations:
1Reinhard Lipowsky, Theorie & Bio-Systeme, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863327              

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Free keywords: Buckling, Topological defects; Drops & Bubbles; Emulsions
 Abstract: When cooled down, emulsion droplets stabilized by a frozen interface of alkane molecules and surfactants have been observed to undergo a spectacular sequence of morphological transformations: from spheres to faceted liquid icosahedra, down to flattened liquid platelets. While generally ascribed to the interplay between the elasticity of the frozen interface and surface tension, the physical mechanisms underpinning these transitions have remained elusive, despite different theoretical pictures having been proposed in recent years. In this Letter, we introduce a comprehensive mechanical model of morphing emulsion droplets, which quantitatively accounts for various experimental observations, including the size scaling behavior of the faceting transition. Our analysis highlights the role of gravity and the spontaneous curvature of the frozen interface in determining the specific transition pathway.

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Language(s): eng - English
 Dates: 2021-01-212021
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: No review
 Degree: -

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Title: Physical Review Letters
  Abbreviation : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: - Volume / Issue: 126 (3) Sequence Number: 038001 Start / End Page: - Identifier: ISSN: 0031-9007

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Title: Condensed Matter: Materials Science
  Other : Materials Science
  Abbreviation : cond-mat.mtrl-sci
Source Genre: Journal
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Pages: - Volume / Issue: - Sequence Number: 2009.01218 Start / End Page: - Identifier: ISSN: arXiv:1701.06694