Main Scope

&meta;ετα = meta = beyond (Greek)

Metamaterials are engineered composites that exhibit superior properties that are not found in nature and not observed in the constituent materials.

Electromagnetic properties

natural materials	man-made materials

What is a metamaterial?

• Metamaterial is an artificial material which electromagnetic properties (ε, μ) can be controlled.
• It is made up of periodic arrays of metallic resonant elements.
• Both the size of the element and the unit cell are small relative to the wavelength.

Why is it important?

Because it makes possible the manipulation of fields and waves at a subwavelength scale.

Metallic inclusions

Size of element << λ d << λ

Examples of resonant elements:

Swiss-Roll

Split Ring Resonator

Capacitively Loaded Ring

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