Recoil experiments determine the eigenmodes of viscoelastic fluids

Ginot, Félix; Caspers, Juliana; Reinalter, Luis-Frieder; Krishna Kumar, Karthika; Krüger, Matthias; Bechinger, Clemens

Recoil experiments determine the eigenmodes of viscoelastic fluids

Dateien

Ginot_2-4pyrdlqhzmen4.pdfGröße: 3.33 MBDownloads: 34

Datum

2022

Open Access-Veröffentlichung

Open Access Gold

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

New Journal of Physics. Institute of Physics Publishing (IOP). 2022, 24, 123013. eISSN 1367-2630. Available under: doi: 10.1088/1367-2630/aca8c7

Zusammenfassung

We experimentally investigate the transient recoil dynamics of a colloidal probe particle in a viscoelastic fluid after the driving force acting on the probe is suddenly removed. The corresponding recoil displays two distinct timescales which are in excellent agreement with a microscopic model which considers the probe particle to be coupled to two bath particles via harmonic springs. Notably, this model exhibits two sets of eigenmodes which correspond to reciprocal and non-reciprocal force conditions and which can be experimentally confirmed in our experiments. We expect our findings to be relevant under conditions where particles are exposed to non-steady shear forces as this is encountered e.g. in microfluidic sorting devices or the intermittent motion of motile bacteria within their natural viscoelastic surrounding.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

GINOT, Félix, Juliana CASPERS, Luis-Frieder REINALTER, Karthika KRISHNA KUMAR, Matthias KRÜGER, Clemens BECHINGER, 2022. Recoil experiments determine the eigenmodes of viscoelastic fluids. In: New Journal of Physics. Institute of Physics Publishing (IOP). 2022, 24, 123013. eISSN 1367-2630. Available under: doi: 10.1088/1367-2630/aca8c7

BibTex

@article{Ginot2022Recoi-59783,
  year={2022},
  doi={10.1088/1367-2630/aca8c7},
  title={Recoil experiments determine the eigenmodes of viscoelastic fluids},
  volume={24},
  journal={New Journal of Physics},
  author={Ginot, Félix and Caspers, Juliana and Reinalter, Luis-Frieder and Krishna Kumar, Karthika and Krüger, Matthias and Bechinger, Clemens},
  note={This project was funded by the Deutsche Forschungsgemeinschaft (DFG), Grant No. SFB 1432—Project ID 425217212 Article Number: 123013}
}

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Kommentar zur Publikation

This project was funded by the Deutsche Forschungsgemeinschaft (DFG), Grant No. SFB 1432—Project ID 425217212

Universitätsbibliographie

Ja

Begutachtet

Ja