Abstract
About this talk
The theory of wave scattering by many small impedance particles of arbitrary shapes is developed. The basic assumptions are: a d λ, where a is the characteristic size of particles, d is the smallest distance between the neighboring particles, λ is the wavelength.
This theory allows one to give a recipe for creating materials with a desired refraction coefficient. One can create material with negative refraction: the group veloc- ity in this material is directed opposite to the phase velocity. One can create a material with a desired wave focusing property. Quantum-mechanical scattering by many potentials with small supports is considered.
Speaker
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