NATURE NEGATIVE? The apparent lack of negative refractive index materials in nature is surprising because some of the constructed metamaterials closely resemble diatom silica fustules, with periodic photonic crystals and a band gap. And closely resemble other naturally occurring photonic crystals.
https://lnkd.in/eBgqN6u
linkedin post 2022-06-29 05:12:48
Nigel Fleming
September 21, 2022