title: Effective medium theory for random media composed of two-layered spheres.
abstract: We study the effective index of random media composed of two-layered spheres by using the energy-density coherent potential approximation method. As expected from the Ewald-Oseen extinction theorem, in the long-wavelength limit, the optical properties of a random medium composed of two-layered spheres are identical to those of a random medium composed of the corresponding pure spheres, while in the Mie-scattering region, the single-scattering resonances lead to an overall shift of the effective refractive index with the modified volume fraction.
authors: Key Lab for Micro and Nanophotonic Structures (Ministry of Education), Department of Optical Science and Engineering, Fudan University, Shanghai, China.
authors: Hao
authors: H
authors: Zhang
authors: Pengfei
authors: P
authors: Zhu
authors: Yuchen
authors: Y
authors: Xu
authors: Heyuan
authors: H
authors: Zhu
authors: Min
authors: M
authors: Xu