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13 papers · 2 filters
Negative refraction in Al:ZnO/ZnO metamaterial in the near-infrared
Gururaj V. Naik, Jingjing Liu, Alexander V. Kildishev +2
Noble metals such as gold and silver are the primary metallic building blocks of metamaterial devices. Making subwavelength-sized structural elements from these metals seriously li…
Topological Transitions in Metamaterials
Harish N. S. Krishnamoorthy, Zubin Jacob, Evgenii Narimanov +2
The ideas of mathematical topology play an important role in many aspects of modern physics - from phase transitions to field theory to nonlinear dynamics (Nakahara M (2003) in Geo…
Darker than black: radiation-absorbing metamaterial
E. E. Narimanov, H. Li, Yu. A. Barnakov +2
We show that corrugated surfaces of hyperbolic metamaterials scatter light preferentially inside the media, resulting in a very low reflectance and ultimate dark appearance in the…
Beyond Stefan-Boltzmann Law: Thermal Hyper-Conductivity
Evgenii E. Narimanov, Igor I. Smolyaninov
We demonstrate that the broadband divergence of the photonic density of states in hyperbolic metamaterials leads to giant increase in radiative heat transfer, beyond the limit set…
A comparative study of semiconductor-based plasmonic metamaterials
Gururaj V. Naik, Alexandra Boltasseva
Recent metamaterial (MM) research faces several problems when using metal-based plasmonic components as building blocks for MMs. The use of conventional metals for MMs is limited b…
Semiconductors for Plasmonics and Metamaterials
Gururaj V. Naik, Alexandra Boltasseva
Plasmonics has conventionally been in the realm of metal-optics. However, conventional metals as plasmonic elements in the near-infrared (NIR) and visible spectral ranges suffer fr…