Method for obtaining natural material with negative refractive index and its application

摘要

The object of the invention is to obtain natural material with a negative refraction factor characterised by the mixing of at least two powdered chemicals, of which at least one compound has negative dielectric permeability values in the common frequency range; and second negative magnetic permeability values, after which the mixture of the compounds is pre-pressed and the resulting scrubbing is subjected to a basic pressing,the pressing is carried out under high pressure conditions. The material obtained by this method is used, inter alia, as an electromagnetic shield, antenna, absorber, superlens, or electromagnetic wave filter.