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Nonreciprocal rotating power flow within plasmonic nanostructures
Artur R. Davoyan, Nader Engheta
We theoretically explore the notion of nonreciprocal near-zone manipulation of electromagnetic fields within subwavelength plasmonic nanostructures embedded in magneto-optical mate…
Optical isolation with epsilon-near-zero metamaterials
Arthur R. Davoyan, Ahmed Mahmoud, Nader Engheta
We suggest a principle for isolation of circularly polarized waves in magnetically active extreme-parameter metamaterials. Using theoretical analysis and numerical simulations, we…
PT Metamaterials via Complex-Coordinate Transformation Optics
Giuseppe Castaldi, Silvio Savoia, Vincenzo Galdi +2
We extend the transformation-optics paradigm to a complex spatial coordinate domain, in order to deal with electromagnetic metamaterials characterized by balanced loss and gain, gi…
Transformation Electronics: Tailoring Electron's Effective Mass
Mario G. Silveirinha, Nader Engheta
The speed of integrated circuits is ultimately limited by the mobility of electrons or holes, which depend on the effective mass in a semiconductor. Here, building on an analogy wi…
A Metamaterial-Inspired Model for Electron Waves in Bulk Semiconductors
Mario G. Silveirinha, Nader Engheta
Based on an analogy with electromagnetic metamaterials, we develop an effective medium description for the propagation of electron matter waves in bulk semiconductors with a zincbl…
Analytical Study of Sub-Wavelength Imaging by Uniaxial Epsilon-Near-Zero Metamaterial Slabs
Giuseppe Castaldi, Silvio Savoia, Vincenzo Galdi +2
We discuss the imaging properties of uniaxial epsilon-near-zero metamaterial slabs with possibly tilted optical axis, analyzing their sub-wavelength focusing properties as a functi…