Journal article

The liquid-glass-jamming transition in disordered ionic nanoemulsions

  • Braibanti, Marco Department of Physics, University of Fribourg, Switzerland
  • Kim, Ha Seong Department of Chemistry - Biochemistry, University of California, Los Angeles, USA
  • Şenbil, Nesrin Department of Physics, University of Fribourg, Switzerland
  • Pagenkopp, Matthew J. Department of Chemistry - Biochemistry, University of California, Los Angeles, USA
  • Mason, Thomas G. Department of Chemistry - Biochemistry, University of California, Los Angeles, USA
  • Scheffold, Frank Department of Physics, University of Fribourg, Switzerland
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    08.11.2017
Published in:
  • Scientific Reports. - 2017, vol. 7, no. 1, p. 13879
English In quenched disordered out-of-equilibrium many-body colloidal systems, there are important distinctions between the glass transition, which is related to the onset of nonergodicity and loss of low-frequency relaxations caused by crowding, and the jamming transition, which is related to the dramatic increase in elasticity of the system caused by the deformation of constituent objects. For softer repulsive interaction potentials, these two transitions become increasingly smeared together, so measuring a clear distinction between where the glass ends and where jamming begins becomes very difficult or even impossible. Here, we investigate droplet dynamics in concentrated silicone oil-in-water nanoemulsions using light scattering. For zero or low NaCl electrolyte concentrations, interfacial repulsions are soft and longer in range, this transition sets in at lower concentrations, and the glass and the jamming regimes are smeared. However, at higher electrolyte concentrations the interactions are stiffer, and the characteristics of the glass-jamming transition resemble more closely the situation of disordered elastic spheres having sharp interfaces, so the glass and jamming regimes can be distinguished more clearly.
Faculty
Faculté des sciences et de médecine
Department
Département de Physique
Language
  • English
Classification
Physics
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/306492
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