Journal ArticleDOI
Experimental realization of an epsilon-near-zero metamaterial at visible wavelengths
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In this article, the optical phase advance during propagation can be very small in metamaterials with dielectric permittivities close to zero at visible wavelengths, and the authors show that the optical phases can be accelerated by very small amounts.Abstract:
Silver and silicon nitride metamaterial structures with dielectric permittivities close to zero are demonstrated at visible wavelengths. In such materials, the optical phase advance during propagation can be very small.read more
Citations
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Journal ArticleDOI
Near-zero refractive index photonics
Iñigo Liberal,Nader Engheta +1 more
TL;DR: In this paper, the underlying principles and unique optical applications of structures exhibiting near-zero dielectric permittivity and/or magnetic permeability are reviewed, and the timely relevance to nonlinear, non-reciprocal and non-local effects is highlighted.
Journal ArticleDOI
Extreme sensitivity biosensing platform based on hyperbolic metamaterials
Kandammathe Valiyaveedu Sreekanth,Yunus Alapan,Mohamed ElKabbash,Efe Ilker,Michael Hinczewski,Umut A. Gurkan,Antonio De Luca,Giuseppe Strangi,Giuseppe Strangi +8 more
TL;DR: This paper reports the ability of the metamaterial platform to detect ultralow-molecular-weight biomolecules at picomolar concentrations using a standard affinity model streptavidin-biotin.
Journal ArticleDOI
On-chip zero-index metamaterials
Yang Li,Shota Kita,Philip Munoz,Orad Reshef,Daryl I. Vulis,Mei Yin,Mei Yin,Marko Loncar,Eric Mazur +8 more
TL;DR: In this paper, an integrated on-chip integrated metamaterial with a refractive index of zero in the optical regime is presented, where light refracts perpendicular to the facets of a prism made of this metammaterial, directly demonstrating that the index of refraction is zero.
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Digital Metamaterials
TL;DR: In this paper, the authors investigate how one can synthesize an electromagnetic metamaterial with desired materials parameters, eg, with a desired permittivity, using only two elemental materials, which they call "metamaterial bits" with two distinct permittivities functions, as building blocks.
Journal ArticleDOI
Nonlinear optical effects in epsilon-near-zero media
TL;DR: Recently, a new class of materials with a vanishing permittivity, known as epsilon-near-zero (ENZ) materials, has been reported to exhibit unprecedented ultrafast nonlinear efficiencies within sub-wavelength propagation lengths as discussed by the authors.
References
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Journal ArticleDOI
Tunneling of electromagnetic energy through subwavelength channels and bends using ε-near-zero materials
TL;DR: It is demonstrated theoretically that electromagnetic waves can be "squeezed" and tunneled through very narrow channels filled with epsilon-near-zero (ENZ) materials and it is discussed that in some cases the isotropy of the ENZ material may not be an issue.
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Epsilon-near-zero metamaterials and electromagnetic sources: Tailoring the radiation phase pattern
TL;DR: In this paper, the authors investigate the response of epsilon-near-zero metamaterials and plasmonic materials to electromagnetic source excitation and propose the use of these media for tailoring the phase of radiation pattern of arbitrary sources.
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Topological Transitions in Metamaterials
Harish N. S. Krishnamoorthy,Harish N. S. Krishnamoorthy,Zubin Jacob,Evgenii E. Narimanov,Ilona Kretzschmar,Vinod M. Menon,Vinod M. Menon +6 more
TL;DR: An optical topological transition in strongly anisotropic metamaterials is uncovered that results in a dramatic increase in the photon density of states—an effect that can be used to engineer this interaction.
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Simultaneous Negative Phase and Group Velocity of Light in a Metamaterial
TL;DR: This work investigated the propagation of femtosecond laser pulses through a metamaterial that has a negative index of refraction for wavelengths around 1.5 micrometers and directly inferred the phase time delay from the interference fringes of a Michelson interferometer.
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Experimental verification of epsilon-near-zero metamaterial coupling and energy squeezing using a microwave waveguide.
Brian Edwards,Andrea Alù,Michael E. Young,Mário G. Silveirinha,Mário G. Silveirinha,Nader Engheta +5 more
TL;DR: This recently developed theory of energy squeezing and tunneling is experimentally verified through an ultranarrow waveguide channel that mimics zero-permittivity properties, showing an almost uniform phase along the narrow channel and weak dependence over its geometry.