Strain pattern in supercooled liquids

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2016
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Hajnal, David
Klix, Christian L.
Keim, Peter
Fuchs, Matthias
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Physical Review Letters. 2016, 117(20), 208002. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.117.208002
Zusammenfassung

Investigations of strain correlations at the glass transition reveal unexpected phenomena. The shear strain fluctuations show an Eshelby-strain pattern [∼cos(4θ)/r2], characteristic of elastic response, even in liquids, at long times. We address this using a mode-coupling theory for the strain fluctuations in supercooled liquids and data from both video microscopy of a two-dimensional colloidal glass former and simulations of Brownian hard disks. We show that the long-ranged and long-lived strain signatures follow a scaling law valid close to the glass transition. For large enough viscosities, the Eshelby-strain pattern is visible even on time scales longer than the structural relaxation time τ and after the shear modulus has relaxed to zero.

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ISO 690ILLING, Bernd, Sebastian FRITSCHI, David HAJNAL, Christian L. KLIX, Peter KEIM, Matthias FUCHS, 2016. Strain pattern in supercooled liquids. In: Physical Review Letters. 2016, 117(20), 208002. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.117.208002
BibTex
@article{Illing2016-06-10T15:04:24ZStrai-37227,
  year={2016},
  doi={10.1103/PhysRevLett.117.208002},
  title={Strain pattern in supercooled liquids},
  number={20},
  volume={117},
  issn={0031-9007},
  journal={Physical Review Letters},
  author={Illing, Bernd and Fritschi, Sebastian and Hajnal, David and Klix, Christian L. and Keim, Peter and Fuchs, Matthias},
  note={Article Number: 208002}
}
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