Book ChapterDOI
Introduction to Metamaterials
Tie Jun Cui,Ruopeng Liu,David R. Smith +2 more
- pp 1-19
TLDR
In this article, the authors discuss the important issues for the development and future of metamaterials, including the optical transformation, effective medium theory for periodic structures, broadband and low-loss metammaterials, and potential applications.Abstract:
There have been increasing interests in metamaterials in the past 10 years in the scientific communities. However, metamaterials are sometimes regarded as left-handed materials or negative refractive index materials by a lot of people including researchers. In fact, the rapid development in this exciting area has shown that metamaterials are far beyond left-handed materials. In this chapter, we will clarify what metamaterial is and report the recent progress on metamaterials. We also summarize the important issues for the development and future of metamaterials, including the optical transformation, effective medium theory for periodic structures, broadband and low-loss metamaterials, rapid design of metamaterials, and potential applications. The impact of computational electromagnetics on metamaterials is briefly discussed.read more
Citations
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Book
Finite element methods and their applications
TL;DR: In this paper, the authors propose the following Finite elements: Elementary Finite Elements, Nonconforming Finite Element, Discontinuous Finite element, Characteristic Finite Factor, Adaptive Finite factor, Solid Mechanics, Fluid Flow in Porous Media, Semiconductor Modeling.
Journal ArticleDOI
Reconfigurable near-IR metasurface based on Ge 2 Sb 2 Te 5 phase-change material
Alexej Pogrebnyakov,Jeremy A. Bossard,Jeremiah P. Turpin,J. David Musgraves,Hee Jung Shin,Clara Rivero-Baleine,Nikolas J. Podraza,Kathleen Richardson,Douglas H. Werner,Theresa S. Mayer +9 more
TL;DR: In this article, a reconfigurable metasurface made of Ge2Sb2Te5 phase change material was experimentally demonstrated in the 1.55 μm wavelength range.
Journal ArticleDOI
Quad band metamaterial absorber based on asymmetric circular split ring resonator for multiband microwave applications
Md. Moniruzzaman,Mohammad Tariqul Islam,Ghulam Muhammad,Mandeep Singh Jit Singh,Md. Samsuzzaman +4 more
TL;DR: In this paper, a modified asymmetric circular split ring resonator was proposed for microwave applications. But the resonator of the unit cell is structured with three concentric intercoupled circular split rings with dimensions modified to obtain maximum absorption peaks of 97.9%, 99.1, 99.5%, and 99.95% at 4.1 GHz.
Journal ArticleDOI
Polarization-dependent tunneled metamaterial structure with enhanced fields properties for X-band application
TL;DR: A modified RLC-based resonator with a large bandwidth of the negative refractive index (NRI) equal to almost 3.40 GHz has been realized in its operating region by adding a tunnel structure, and its electric and magnetic properties are determined by investigating the tunneling effect produced by a conventional split-ring resonator as discussed by the authors.
References
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Journal ArticleDOI
Numerical solution of initial boundary value problems involving maxwell's equations in isotropic media
Abstract: Maxwell's equations are replaced by a set of finite difference equations. It is shown that if one chooses the field points appropriately, the set of finite difference equations is applicable for a boundary condition involving perfectly conducting surfaces. An example is given of the scattering of an electromagnetic pulse by a perfectly conducting cylinder.
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
A perfectly matched layer for the absorption of electromagnetic waves
TL;DR: Numerical experiments and numerical comparisons show that the PML technique works better than the others in all cases; using it allows to obtain a higher accuracy in some problems and a release of computational requirements in some others.
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.