Metamaterials are engineered composites with bespoke electromagnetic, acoustic, or mechanical properties not found in natural materials. They consist of periodic arrays of unit cells designed at micro- and nano-scales to manipulate waves—such as light, sound, or radio frequencies—in novel ways. Key advantages include negative refractive index, ultra-high sensitivity, and tailored band... https://www.patreon.com/posts/metamaterials-to-130594975