NEGATIVE-INDEX METAMATERIALS
Harvey_NIM
Harvey_NIM
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<strong>NEGATIVE</strong>-<strong>INDEX</strong> <strong>METAMATERIALS</strong><br />
• Optical properties of materials are governed by the<br />
electric permittivity ε and the magnetic permeability µ<br />
• Any collection of objects with size and spacing 0<br />
Electrical plasmas,<br />
metals, thin wire<br />
structures<br />
Double Negative<br />
Materials<br />
ε < 0, µ < 0<br />
Negative-Index<br />
metamaterials, not<br />
found in nature<br />
µ<br />
Double positive<br />
media<br />
ε > 0, µ > 0<br />
dielectrics<br />
Mu-negative<br />
materials<br />
ε > 0, µ < 0<br />
Gyromagnetic<br />
materials, magnetic<br />
plasmas?<br />
Classification of materials based on<br />
dielectric and magnetic properties<br />
ε<br />
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