Interfacial fluid rheology of soft particles
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866910289322049536 |
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| author | Schmidt, Maximilian M. Ruiz-Franco, José Bochenek, Steffen Camerin, Fabrizio Zaccarelli, Emanuela Scotti, Andrea |
| author_facet | Schmidt, Maximilian M. Ruiz-Franco, José Bochenek, Steffen Camerin, Fabrizio Zaccarelli, Emanuela Scotti, Andrea |
| contents | 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 non-monotonically with $ζ_{2D}$ at the interface, confirming long-sought predictions of reentrant behavior for Hertzian-like systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2308_15933 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Interfacial fluid rheology of soft particles Schmidt, Maximilian M. Ruiz-Franco, José Bochenek, Steffen Camerin, Fabrizio Zaccarelli, Emanuela Scotti, Andrea Soft Condensed Matter 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 non-monotonically with $ζ_{2D}$ at the interface, confirming long-sought predictions of reentrant behavior for Hertzian-like systems. |
| title | Interfacial fluid rheology of soft particles |
| topic | Soft Condensed Matter |
| url | https://arxiv.org/abs/2308.15933 |