Voronoi cells A 2D structure created by the random sequential addition of particles to a system. Each polygon (Voronoi cell) represents the location of a particle and the space-filling tessellation is called a Voronoi diagram. The colour of each cell represents the weight of a charge-like parameter. (Courtesy: Salvatore Torquato/Physical Review X/CC BY 4.0)"> Voronoi cells A 2D structure created by the random sequential addition of particles to a system. Each polygon (Voronoi cell) represents the location of a particle and the space-filling tessellation is called a Voronoi diagram. The colour of each cell represents the weight of a charge-like parameter. (Courtesy: Salvatore Torquato/Physical Review X/CC BY 4.0) By including weights associated with particles, researchers in the US, South Korea and Germany have generalized significantly the concept of hyperuniformity of multi-particle systems. Hyperuniformity refers to a structural property in which at large enough length scales there is hidden order.…