DOE OSTI · 1531721
Indefinite materials
Abstract
A compensating multi layer material includes two compensating layers adjacent to one another. A multi-layer embodiment of the invention produces sub-wavelength near-field focusing, but mitigates the thickness and loss limitations of the isotropic “perfect lens.” An antenna substrate comprises an indefinite material.
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Smith, David R., Schurig, David. 2012-02-21. Indefinite materials. https://www.osti.gov/biblio/1531721
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