More is less in unpercolated active solids
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866910167780556800 |
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| author | Binysh, Jack Baardink, Guido Veenstra, Jonas Coulais, Corentin Souslov, Anton |
| author_facet | Binysh, Jack Baardink, Guido Veenstra, Jonas Coulais, Corentin Souslov, Anton |
| contents | A remarkable feat of active matter physics is that systems as diverse as collections of self-propelled particles, nematics mixed with molecular motors, and interacting robots can all be described by symmetry-based continuum theories. These descriptions rely on reducing complex effects of individual motors to a few key active parameters, which increase with activity. Here we discover a striking anomaly in the continuum description of non-reciprocal active solids, a ubiquitous class of active materials. We find that as microscopic activity increases, macroscale active response can vanish: more is less. In this highly active regime, non-affine and localized modes prevail and destroy the large-scale signature of microscopic activity. These modes exist in any dilute periodic structure and emerge in random lattices below a percolation transition. Our results unveil a counterintuitive facet of active matter, offering new principles for engineering materials far from equilibrium. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_18362 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | More is less in unpercolated active solids Binysh, Jack Baardink, Guido Veenstra, Jonas Coulais, Corentin Souslov, Anton Soft Condensed Matter Statistical Mechanics A remarkable feat of active matter physics is that systems as diverse as collections of self-propelled particles, nematics mixed with molecular motors, and interacting robots can all be described by symmetry-based continuum theories. These descriptions rely on reducing complex effects of individual motors to a few key active parameters, which increase with activity. Here we discover a striking anomaly in the continuum description of non-reciprocal active solids, a ubiquitous class of active materials. We find that as microscopic activity increases, macroscale active response can vanish: more is less. In this highly active regime, non-affine and localized modes prevail and destroy the large-scale signature of microscopic activity. These modes exist in any dilute periodic structure and emerge in random lattices below a percolation transition. Our results unveil a counterintuitive facet of active matter, offering new principles for engineering materials far from equilibrium. |
| title | More is less in unpercolated active solids |
| topic | Soft Condensed Matter Statistical Mechanics |
| url | https://arxiv.org/abs/2504.18362 |