What is it about?
All "natural" materials such as glass, diamond and such have positive electrical permittivity, magnetic permeability and an index of refraction. In these new artificially fabricated materials - termed as negative index materials (NIM) or double negative (ONG) media or left handed (LH) materials or backward wave (BW) media - all these material parameters are negative.
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Why is it important?
Metamaterials are new artificial materials with unusual electromagnetic properties that are not found in naturally occurring materials. With these unusual material parameters, new kinds of miniaturized antennas and microwave components/devices can be created for the wireless communications and the defense industries.
Perspectives
Explains metamaterials in a clear and lucid way.
Rakhesh Singh Kshetrimayum
Indian Institute of Technology Guwahati
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This page is a summary of: A brief intro to metamaterials, IEEE Potentials, January 2005, Institute of Electrical & Electronics Engineers (IEEE),
DOI: 10.1109/mp.2005.1368916.
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