4.8 Article

Optimized Large Hyperuniform Binary Colloidal Suspensions in Two Dimensions

Journal

PHYSICAL REVIEW LETTERS
Volume 125, Issue 6, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.125.068002

Keywords

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Funding

  1. National Science Foundation [DMR-1714722]
  2. Agencia Estatal de Investigacin [FIS2017-89361-C3-2-P]
  3. Fondo Europeo de Desarrollo Regional (FEDER) [FIS2017-89361-C3-2-P]
  4. European Unions Horizon 2020 Research and Innovation Staff Exchange programme under the Marie Skodowska-Curie Grant [734276]

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The creation of disordered hyperuniform materials with extraordinary optical properties (e.g., large complete photonic band gaps) requires a capacity to synthesize large samples that are effectively hyperuniform down to the nanoscale. Motivated by this challenge, we propose a feasible equilibrium fabrication protocol using binary paramagnetic colloidal particles confined in a 2D plane. The strong and long-ranged dipolar interaction induced by a tunable magnetic field is free from screening effects that attenuate long-ranged electrostatic interactions in charged colloidal systems. Specifically, we numerically find a family of optimal size ratios that makes the two-phase system effectively hyperuniform. We show that hyperuniformity is a general consequence of low isothermal compressibilities, which makes our protocol suitable to treat more general systems with other long-ranged interactions, dimensionalities, and/or polydispersity. Our methodology paves the way to synthesize large photonic hyperuniform materials that function in the visible to infrared range and hence may accelerate the discovery of novel photonic materials.

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