326 research outputs found
What are the left-handed media and what is interesting about them?
We review the intensively discussed ideas about wave propagation and
refraction in media where both electric permittivity and magnetic permeability
are negative. The criticism against negative refraction as violating the
causality principle is considered. Starting from the initial wave equations,
refraction of beams at the boundary of a left-handed medium is analyzed. The
physics of a perfect lens formed by a flat layer of a left-handed material is
considered.Comment: 21 pages, 8 figure
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