Publikation:

Autonomously Probing Viscoelasticity in Disordered Suspensions

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2020

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Abaurrea-Velasco, Clara
de Graaf, Joost

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http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1g7q02u4hj5lu3
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https://doi.org/10.1103/PhysRevLett.125.258002
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Published

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Physical Review Letters. American Physical Society (APS). 2020, 125(25), 258002. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.125.258002

Zusammenfassung

Recent experiments show a strong rotational diffusion enhancement for self-propelled microrheological probes in colloidal glasses. Here, we provide microscopic understanding using simulations with a frictional probe-medium coupling that converts active translation into rotation. Diffusive enhancement emerges from the medium’s disordered structure and peaks at a second-order transition in the number of contacts. Our results reproduce the salient features of the colloidal glass experiment and support an effective description that is applicable to a broader class of viscoelastic suspensions.

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530 Physik

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ISO 690ABAURREA-VELASCO, Clara, Celia LOZANO, Clemens BECHINGER, Joost DE GRAAF, 2020. Autonomously Probing Viscoelasticity in Disordered Suspensions. In: Physical Review Letters. American Physical Society (APS). 2020, 125(25), 258002. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.125.258002
BibTex
@article{AbaurreaVelasco2020Auton-52315,
  year={2020},
  doi={10.1103/PhysRevLett.125.258002},
  title={Autonomously Probing Viscoelasticity in Disordered Suspensions},
  number={25},
  volume={125},
  issn={0031-9007},
  journal={Physical Review Letters},
  author={Abaurrea-Velasco, Clara and Lozano, Celia and Bechinger, Clemens and de Graaf, Joost},
  note={Article Number: 258002}
}
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