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      Non-equilibrium Strong Hyperuniform Fluids of Athermal Active Circle Swimmers with Giant Local Fluctuations

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          Abstract

          Disordered hyperuniform structures are an exotic state of matter that shares similar properties with crystals but has no long-range order, which exists in many systems in mathematics, physics, chemistry, and biological sciences. Although their importance has been brought to the fore in the past decade, the rational design of disordered strong hyperuniform colloidal structures remains challenging. Here, by using computer simulations and mean field theories, we discover a new type of dynamic disordered strong hyperuniform structures with giant local fluctuations in non-equilibrium 2D systems of athermal active circle swimmers. These new hyperuniform structures feature a special length scale, i.e., the size of circular motion of swimmers, below which giant local fluctuations are observed in the system. By developing a dynamic mean field theory, we clarify that the enhanced local fluctuations originate from an emergent non-equilibrium micro phase separation confined within the length scale of circular motion of swimmers. Our results suggest a new way of designing active colloidal swimmers to form novel disordered hyperuniform structures with tunable local fluctuations.

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          Author and article information

          Journal
          10 February 2018
          Article
          1802.03682
          34df32a3-75a9-450c-be06-fbcc79dd3c03

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

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          cond-mat.soft

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