Synthesis of Dielectric Nanospheres with Moderate‐Refractive‐Index and Applications in Photon Manipulating

Abstract

The nanostructures for photon manipulating (NSPMs) have attracted widespread attention owing to their ability to directionally control light propagations. The related research has also been developed from basic theoretical studies to various practical applications. Taking dielectric nanospheres with moderate-refractive-index as the building blocks is becoming a new trend to construct the NSPMs, because of their low processing cost and negligible light energy losses. In this review, we will summarize the synthetic methods towards dielectric nano-spheres with moderate-refractive-index and their light manipulating mechanism. Another specific focus of this review is devoted to the practical applications of the NSPMs composed of dielectric nanospheres with moderate-refractive-index, such as coloring, sensors, regulating luminescence, and surface enhanced Raman scattering. Finally, the challenges and outlook of the dielectric nanospheres with moderate-refractive-index in synthesis and applications will be considered.