{HEAD ~ This patent specification} relates generally to the propagation of {TAIL ~ electromagnetic radiation} and, more particularly, to composite materials capable of exhibiting negative effective permeability and negative effective permittivity with respect to incident electromagnetic radiation 
{ HEAD ~ This patent specification } relates generally to the propagation of { TAIL ~ electromagnetic radiation } and , more particularly , to composite materials capable of exhibiting negative effective permeability and negative effective permittivity with respect to incident electromagnetic radiation
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