 This research paper explains how the introduction of silver into a porous SiO2 microsphere matrix can create a random metamaterial with precise control over electromagnetic properties. Silver was used to restrict its distribution within the interstices of the SiO2 microspheres, resulting in a plasma-like behavior of the silver network. This plasma-like behavior caused the material to exhibit negative permittivity and negative permeability, which can be adjusted by varying the amount of silver and the frequency of the applied signal. Additionally, the authors explain how the material's negative permittivity and negative permeability can be controlled by varying the frequency of the applied signal. Furthermore, they demonstrate how the material can be used to enhance absorption and selectively filter out certain frequencies. This article was authored by Peitao Xia, Zidong Zhang, Zhongyang Wang, and others.