论文标题
使用合并的实验和仿真技术对无序的一组分胶体纳米粒子上甲型的结构颜色进行建模
Modeling Structural Colors from Disordered One-Component Colloidal Nanoparticle-based Supraballs using Combined Experimental and Simulation Techniques
论文作者
论文摘要
鸟类中的明亮，饱和的结构颜色激发了自组装，无序的组装纳米颗粒的合成，这些纳米颗粒具有不同的粒子间距和折射率。然而，由于多种散射和强吸收的影响，预测组装纳米颗粒的颜色，从而指导其合成，仍然具有挑战性。在这里，我们使用一种计算方法首先从小角度散射测量值重建纳米颗粒的组装结构，然后将重建的结构输入到有限差分的时间域方法中，以预测其颜色和反射率。通过将其预测与实验测量的反射率进行比较，并为具有所需的光学和光热特性的反向工程胶体组件进行比较，可以成功验证这种计算方法。
Bright, saturated structural colors in birds have inspired synthesis of self-assembled, disordered arrays of assembled nanoparticles with varied particle spacings and refractive indices. However, predicting colors of assembled nanoparticles, and thereby guiding their synthesis, remains challenging due to the effects of multiple scattering and strong absorption. Here, we use a computational approach to first reconstruct the nanoparticles' assembled structures from small-angle scattering measurements and then input the reconstructed structures to a finite-difference time-domain method to predict their color and reflectance. This computational approach is successfully validated by comparing its predictions against experimentally measured reflectance and provides a pathway for reverse engineering colloidal assemblies with desired optical and photothermal properties.
