Journal ArticleDOI
Partial focusing of radiation by a slab of indefinite media
TLDR
In this article, a metamaterial composed of split ring resonators, designed to provide a permeability equal to −1 along the longitudinal axis, was shown to redirect s-polarized electromagnetic waves from a nearby source to a partial focus.Abstract:
Negative refraction can occur at the interface between vacuum and an indefinite medium—an anisotropic medium for which not all elements of the permittivity and permeability tensors have the same sign. We show experimentally and via simulations that a metamaterial composed of split ring resonators, designed to provide a permeability equal to −1 along the longitudinal axis, will redirect s-polarized electromagnetic waves from a nearby source to a partial focus. The dispersion characteristics of indefinite media prohibit the possibility of true aplanatic points for a planar slab; however, by contouring the surfaces aplanatic points may be realized, as well as other geometrical optical behavior.read more
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Journal ArticleDOI
Physics of negative refractive index materials
TL;DR: In this paper, the authors review the fundamental concepts and ideas of negative refractive index materials and present the ideas of meta-materials that enable the design of new materials with a negative dielectric permittivity, negative magnetic permeability, and negative fringes.
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
Graphene on hexagonal boron nitride as a tunable hyperbolic metamaterial
Siyuan Dai,Qiong Ma,Mengkun Liu,Mengkun Liu,Trond Andersen,Zhe Fei,Michael Goldflam,Martin Wagner,Kenji Watanabe,T. Taniguchi,Mark H. Thiemens,Fritz Keilmann,G.C.A.M. Janssen,Shou-En Zhu,Pablo Jarillo-Herrero,Michael M. Fogler,Dimitri Basov +16 more
TL;DR: It is shown, by direct nano-infrared imaging, that these hyperbolic polaritons can be effectively modulated in a van der Waals heterostructure composed of monolayer graphene on h-BN.
Journal ArticleDOI
Hyperbolic metamaterials and their applications
TL;DR: A comprehensive and updated picture of the field of hyperbolic metamaterials, from the foundations to the most recent progresses and future perspectives is provided in this article, where the topics discussed embrace theoretical aspects, practical realization and key challenges for applications such as imaging, spontaneous emission engineering, thermal, active and tunable hyperbola media.
Journal ArticleDOI
Subdiffractional focusing and guiding of polaritonic rays in a natural hyperbolic material
Siyuan Dai,Qiong Ma,Trond Andersen,Alexander McLeod,Zhe Fei,Mengkun Liu,Martin Wagner,Kenji Watanabe,Takashi Taniguchi,Mark H. Thiemens,Fritz Keilmann,Pablo Jarillo-Herrero,Michael M. Fogler,Dimitri Basov +13 more
TL;DR: In this paper, the authors demonstrate that hexagonal boron nitride, a natural mid-infrared hyperbolic material, can act as a "hyper-focusing lens" and as a multi-mode waveguide.
References
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Book
Principles of Optics
TL;DR: In this paper, the authors discuss various topics about optics, such as geometrical theories, image forming instruments, and optics of metals and crystals, including interference, interferometers, and diffraction.
Principles of Optics
TL;DR: In this article, the authors discuss various topics about optics, such as geometrical theories, image forming instruments, and optics of metals and crystals, including interference, interferometers, and diffraction.
Journal ArticleDOI
Negative Refraction Makes a Perfect Lens
TL;DR: The authors' simulations show that a version of the lens operating at the frequency of visible light can be realized in the form of a thin slab of silver, which resolves objects only a few nanometers across.
Journal ArticleDOI
The Electrodynamics of Substances with Simultaneously Negative Values of ∊ and μ
Journal ArticleDOI
Experimental Verification of a Negative Index of Refraction
TL;DR: These experiments directly confirm the predictions of Maxwell's equations that n is given by the negative square root ofɛ·μ for the frequencies where both the permittivity and the permeability are negative.
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