DukeSpace

Browsing by Duke-affiliated Author "Popa, Bogdan"

DukeSpace

Browsing by Duke-affiliated Author "Popa, Bogdan"

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  • Design of layered transformation-optics devices of arbitrary shape
    Popa, Bogdan; Cummer, Steven (AMER PHYSICAL SOC, 2010)
    Transformation-optics devices of arbitrary shapes usually result in material parameters inside the device that feature level sets of different shapes. Consequently, these devices cannot easily be implemented using a layered ...
  • Phase Conjugation and Negative Refraction using Nonlinear Active Metamaterials
    Katko, Alexander R.; Gu, Shi; Barrett, John P.; Popa, Bogdan; Cummer, Steven (AMER PHYSICAL SOC, 2010)
    We present an experimental demonstration of phase conjugation using nonlinear metamaterial elements. Active split-ring resonators loaded with varactor diodes are demonstrated theoretically to act as phase-conjugating or ...