Maximilian M. Schmidt¹, José Ruiz-Franco^2*, Steffen Bochenek¹, Fabrizio Camerin³, Emanuela Zaccarelli^4,5*, Andrea Scotti^6*

1 Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52074 Aachen, Germany

2 Physical Chemistry and Soft Matter, Wageningen University and Research, Stippeneng 4, 6708WE Wageningen, The Netherlands

3 Soft Condensed Matter & Biophysics, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands

4 CNR Institute of Complex Systems, Uos Sapienza, Piazzale Aldo Moro 2, 00185 Roma, Italy

5 Department of Physics, Sapienza University of Rome, Piazzale Aldo Moro 2, 00185 Roma, Italy

6 Department of Biomedical Science, Faculty of Health and Society, Malmö University, SE-205 06 Malmö, Sweden

* Corresponding authors emails: jmruizfranco@gmail.com, emanuela.zaccarelli@cnr.it, andrea.scotti@mau.se

DOI10.24435/materialscloud:df-x5 [version v1]

Publication date: Jan 24, 2024

How to cite this record

Maximilian M. Schmidt, José Ruiz-Franco, Steffen Bochenek, Fabrizio Camerin, Emanuela Zaccarelli, Andrea Scotti, Interfacial fluid rheology of soft particles, Materials Cloud Archive 2024.14 (2024), https://doi.org/10.24435/materialscloud:df-x5

Description

In situ interfacial rheology and numerical simulations are used to investigate microgel monolayers in a wide range of packing fractions, ζ_2D. The heterogeneous particle compressibility determines two flow regimes characterized by distinct master curves. To mimic the microgel architecture and reproduce experiments, an interaction potential combining a soft shoulder with the Hertzian model is introduced. In contrast to bulk conditions, the elastic moduli vary nonmonotonically with ζ_2D at the interface, confirming long-sought predictions of reentrant behavior for Hertzian-like systems.

Materials Cloud sections using this data

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Keywords

microgels liquid-liquid interfaces softness and elasticity elastic properties Hertzian model