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Equivalent Nanocircuit Theory and Its Applications
A new methodology termed as equivalent nanocircuit (EN) theory is briefly introduced, and its recent important progress in designing metaâmaterial devices with peculiar characteristics in optical or infrared frequency domain is reviewed. Three representative ENâbased designs of infrared window metaâmaterials, such as Butterworth filter, metalâinsulatorâmetal absorber and designâsimplified TCOâbased superâflat absorber, are demonstrated. All these progresses clearly indicate that the EN theory provides an inspiring advancement on the way of designing more complicated metaâdevices
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