高折射率纳米盘自组织阵列中超均匀无序的定制光散射
Tailored Light Scattering through Hyperuniform Disorder in self-organized arrays of high-index Nanodisks
摘要：
在光散射应用中利用的纳米颗粒阵列通常仅以其成分的周期性或相当随机的排列为特征。对于周期性的情况下，光散射主要是由强的空间相关性的安排，由结构因子表示。对于随机情况，结构相关性相互抵消，并且光散射主要由单个散射体的散射性质决定，由形状因子表示。在这些极端的情况下，我们在这里显示，第一次，超均匀无序的自组织大面积阵列的高折射率纳米盘，使结构和形状因子影响所得的散射图案，提供新的手段来定制光散射。从我们的近超均匀界面的散射响应，可以利用在各种各样的应用，并构成了先进的光学材料的一类新的。
英文摘要：
Arrays of nanoparticles exploited in light scattering applications commonly only feature either a periodic or a rather random arrangement of its constituents. For the periodic case, light scattering is mostly governed by the strong spatial correlations of the arrangement, expressed by the structure factor. For the random case, structural correlations cancel each other out and light scattering is mostly governed by the scattering properties of the individual scatterer, expressed by the form factor. In contrast to these extreme cases, we show here, for the first time, that hyperuniform disorder in self-organized large-area arrays of high refractive index nanodisks enables both structure and form factor to impact the resulting scattering pattern, offering novel means to tailor light scattering. The scattering response from our nearly hyperuniform interfaces can be exploited in a large variety of applications and constitutes a novel class of advanced optical materials.
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