论文标题
在二维中优化了大型超明显的二进制胶体悬浮液
Optimized Large Hyperuniform Binary Colloidal Suspensions in Two Dimensions
论文作者
论文摘要
具有潜在非凡光学特性的无序超平均材料的创建需要能力合成有效直至纳米级的超均匀样品的大型样品。在这一挑战中，我们提出了一种使用二进制超级磁性胶体颗粒限制在2D平面中的制造方案。由可调磁场引起的强且长度的偶极相互作用没有筛选效应，可减弱带电的胶体系统中长期静电相互作用。具体而言，我们发现了一个最佳尺寸比率的家族，该家族使两相系统有效地均匀。我们表明，超均匀性是低等热压缩性的总体结果，这使得我们的协议适合具有其他长期软相互作用，尺寸和/或多分散性的系统。我们的方法铺平了合成大型光子超平均材料的方式，这些材料在可见的红外范围内起作用，因此可能会加速发现新型光子材料。
The creation of disordered hyperuniform materials with potentially extraordinary optical properties requires a capacity to synthesize large samples that are effectively hyperuniform down to the nanoscale. Motivated by this challenge, we propose a fabrication protocol using binary superparamagnetic 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 attenuates long-ranged electrostatic interactions in charged colloidal systems. Specifically, we 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 systems with other long-ranged soft 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.
