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Optical nonlocality in multilayered hyperbolic metamaterials based on Thue-Morse superlattices
Silvio Savoia, Giuseppe Castaldi, Vincenzo Galdi
We show that hyperbolic electromagnetic metamaterials implemented as multilayers based on two material constituents arranged according to Thue-Morse (ThM) aperiodic sequence may ex…
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…
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…