Physical Embodiment Enables Information Processing Beyond Explicit Sensing in Active Matter
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866914217815179264 |
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| author | Paul, Diptabrata Milosevic, Nikola Scherf, Nico Cichos, Frank |
| author_facet | Paul, Diptabrata Milosevic, Nikola Scherf, Nico Cichos, Frank |
| contents | Living microorganisms have evolved dedicated sensory machinery to detect environmental perturbations, processing these signals through biochemical networks to guide behavior. Replicating such capabilities in synthetic active matter remains a fundamental challenge. Here, we demonstrate that synthetic active particles can adapt to hidden hydrodynamic perturbations through physical embodiment alone, without explicit sensing mechanisms. Using reinforcement learning to control self-thermophoretic particles, we show that they learn navigation strategies to counteract unobserved flow fields by exploiting information encoded in their physical dynamics. Remarkably, particles successfully navigate perturbations that are not included in their state inputs, revealing that embodied dynamics can serve as an implicit sensing mechanism. This discovery establishes physical embodiment as a computational resource for information processing in active matter, with implications for autonomous microrobotic systems and bio-inspired computation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_17921 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Physical Embodiment Enables Information Processing Beyond Explicit Sensing in Active Matter Paul, Diptabrata Milosevic, Nikola Scherf, Nico Cichos, Frank Soft Condensed Matter Robotics Data Analysis, Statistics and Probability Living microorganisms have evolved dedicated sensory machinery to detect environmental perturbations, processing these signals through biochemical networks to guide behavior. Replicating such capabilities in synthetic active matter remains a fundamental challenge. Here, we demonstrate that synthetic active particles can adapt to hidden hydrodynamic perturbations through physical embodiment alone, without explicit sensing mechanisms. Using reinforcement learning to control self-thermophoretic particles, we show that they learn navigation strategies to counteract unobserved flow fields by exploiting information encoded in their physical dynamics. Remarkably, particles successfully navigate perturbations that are not included in their state inputs, revealing that embodied dynamics can serve as an implicit sensing mechanism. This discovery establishes physical embodiment as a computational resource for information processing in active matter, with implications for autonomous microrobotic systems and bio-inspired computation. |
| title | Physical Embodiment Enables Information Processing Beyond Explicit Sensing in Active Matter |
| topic | Soft Condensed Matter Robotics Data Analysis, Statistics and Probability |
| url | https://arxiv.org/abs/2508.17921 |