Heterogeneous response and non-Markovianity in the microrheology of semisolid viscoelastic materials
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866913878596648960 |
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| author | Azevedo, T. N. Rizzi, L. G. |
| author_facet | Azevedo, T. N. Rizzi, L. G. |
| contents | Recent works indicate that heterogeneous response and non-Markovianity may yield recognizable hallmarks in the microrheology of semisolid viscoelastic materials. Here we perform numerical simulations using a non-Markovian overdamped Langevin approach to explore how the microrheology experienced by probe particles immersed in an effective semisolid material can be influenced by its micro-heterogeneities. Our results show that, besides affecting the mean squared displacement, the time-dependent diffusion coefficient, and the shear moduli, the micro-heterogeneities lead to displacement distributions that deviate from the usual Gaussian behavior. In addition, our study provides an analytical way to characterize the micro-heterogeneities of semisolid viscoelastic materials through their microrheology. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2506_05311 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Heterogeneous response and non-Markovianity in the microrheology of semisolid viscoelastic materials Azevedo, T. N. Rizzi, L. G. Soft Condensed Matter Materials Science Statistical Mechanics Recent works indicate that heterogeneous response and non-Markovianity may yield recognizable hallmarks in the microrheology of semisolid viscoelastic materials. Here we perform numerical simulations using a non-Markovian overdamped Langevin approach to explore how the microrheology experienced by probe particles immersed in an effective semisolid material can be influenced by its micro-heterogeneities. Our results show that, besides affecting the mean squared displacement, the time-dependent diffusion coefficient, and the shear moduli, the micro-heterogeneities lead to displacement distributions that deviate from the usual Gaussian behavior. In addition, our study provides an analytical way to characterize the micro-heterogeneities of semisolid viscoelastic materials through their microrheology. |
| title | Heterogeneous response and non-Markovianity in the microrheology of semisolid viscoelastic materials |
| topic | Soft Condensed Matter Materials Science Statistical Mechanics |
| url | https://arxiv.org/abs/2506.05311 |