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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2508.04244 |
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| _version_ | 1866918116021239808 |
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| author | Burger, Nikolaos A. Petrunin, Alexander V. Schweins, Ann E. Terry Ralf Scotti, Andrea |
| author_facet | Burger, Nikolaos A. Petrunin, Alexander V. Schweins, Ann E. Terry Ralf Scotti, Andrea |
| contents | Concentrated suspensions of small ultra-soft colloids (ultra-low crosslinked microgels) are investigated with scattering and steady shear rheology to capture their equilibrium dynamics. The suspensions lack dynamic arrest, although the slow relaxation time $τ_2$ follows exponential growth with increasing generalized packing fraction, $ζ$. The zero-shear viscosity grows weakly with $ζ$, and never diverges in contrast to other soft glass formers, e.g.~star-polymers, microgels, green particles. Their high compressibility allows these ultra-soft spheres to diffuse even in overcrowded environments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_04244 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Suspensions of small ultra-soft colloids remain liquids in overcrowded conditions Burger, Nikolaos A. Petrunin, Alexander V. Schweins, Ann E. Terry Ralf Scotti, Andrea Soft Condensed Matter Chemical Physics Concentrated suspensions of small ultra-soft colloids (ultra-low crosslinked microgels) are investigated with scattering and steady shear rheology to capture their equilibrium dynamics. The suspensions lack dynamic arrest, although the slow relaxation time $τ_2$ follows exponential growth with increasing generalized packing fraction, $ζ$. The zero-shear viscosity grows weakly with $ζ$, and never diverges in contrast to other soft glass formers, e.g.~star-polymers, microgels, green particles. Their high compressibility allows these ultra-soft spheres to diffuse even in overcrowded environments. |
| title | Suspensions of small ultra-soft colloids remain liquids in overcrowded conditions |
| topic | Soft Condensed Matter Chemical Physics |
| url | https://arxiv.org/abs/2508.04244 |