How Is Negative Permittivity Achieved Using the Wire-Mesh Method?

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    Negative Permittivity
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falcao
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could anyone offer a decent explanation of how a negative permittivity (dielectric constant) is obtained using the wire-mesh method.. i understand the process with plasmons and metals but this one seems a bit beyond me at the moment <<! any thoughts??:biggrin:
 
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even any thoughts on metamaterials in general would be nice