Bianisotropic Photonic Metamaterials

Kriegler, C. E.; Rill, Michael Stefan; Lindén, Stefan; Wegener, Martin

doi:10.1109/jstqe.2009.2020809

Cited by 152 publications

(105 citation statements)

References 55 publications

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“…also [6,Eq. (22.4)] and [73][74][75]) 27) where 28) and V denotes the volume of the sample. Our identification of induced electromagnetic fields with electric and magnetic polarizations is indeed consistent with this approach, because Eq.…”

Section: )mentioning

confidence: 99%

Functional approach to electrodynamics of media

Starke

Schober

2015

Photonics and Nanostructures - Fundamentals and Applications

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In this article, we put forward a new approach to electrodynamics of materials. Based on the identification of induced electromagnetic fields as the microscopic counterparts of polarization and magnetization, we systematically employ the mutual functional dependencies of induced, external and total field quantities. This allows for a unified, relativistic description of the electromagnetic response without assuming the material to be composed of electric or magnetic dipoles. Using this approach, we derive universal (material-independent) relations between electromagnetic response functions such as the dielectric tensor, the magnetic susceptibility and the microscopic conductivity tensor. Our formulae can be reduced to well-known identities in special cases, but more generally include the effects of inhomogeneity, anisotropy, magnetoelectric coupling and relativistic retardation. If combined with the Kubo formalism, they would also lend themselves to the ab initio calculation of all linear electromagnetic response functions.

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Section: )mentioning

confidence: 99%

Functional approach to electrodynamics of media

Starke

Schober

2015

Photonics and Nanostructures - Fundamentals and Applications

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“…In a chiral medium, an electric field causes magnetic polarization, and a magnetic field induces an electrical polarization which is defined as magneto-electric coupling [14]. When a metamaterial involves chiral inclusions, it can be considered as a chiral metamaterial meaning that the effective chirality admittance (ζ) is non-zero.…”

Section: Introductionmentioning

confidence: 99%

Chiral Metamaterial Based Multifunctional Sensor Applications

Karaaslan¹,

Bakır²

2014

PIER

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Abstract-In this work, sensor abilities of a chiral metamaterial based on split ring resonators with double splits (SRDS) are demonstrated both theoretically and experimentally in X band range. This study is based on transmission measurements and simulations monitoring the resonance frequency changes with respect to the thickness of the sensing layer and permittivity values. Experimental and simulated results show that the resonance frequency of the chiral metamaterial based SRDS sensor is linearly related to the permittivity and the thickness of the sensor layer which creates a suitable approach for sensing environment and organic parameters. When the sensor layer filled with the related material, changes in the tissue temperature, sand humidity and calcium chloride density lead to resonance frequency changes. The physical mechanisms are explained by using both equivalent circuit model and the fundamental sensitivity theorem of chiral sensors. This is the first study investigating a sensing mechanism based on the chiral metamaterials in X band range.

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“…This originates from a decreased coupling between the SRRs. The resonance transmission amplitude of an SRR-based metamaterial is related to the strength of excited dipoles, which depends linearly on the induced current in the SRRs 38 . Stronger dipoles will lead to weaker transmission and stronger reflection at the resonant frequency 18 .…”

Section: Resultsmentioning

confidence: 99%

Voltage-tunable dual-layer terahertz metamaterials

et al. 2016

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This paper presents the design, fabrication, and characterization of a real-time voltage-tunable terahertz metamaterial based on microelectromechanical systems and broadside-coupled split-ring resonators. In our metamaterial, the magnetic and electric interactions between the coupled resonators are modulated by a comb-drive actuator, which provides continuous lateral shifting between the coupled resonators by up to 20 μm. For these strongly coupled split-ring resonators, both a symmetric mode and an anti-symmetric mode are observed. With increasing lateral shift, the electromagnetic interactions between the split-ring resonators weaken, resulting in frequency shifting of the resonant modes. Over the entire lateral shift range, the symmetric mode blueshifts bỹ 60 GHz, and the anti-symmetric mode redshifts by~50 GHz. The amplitude of the transmission at 1.03 THz is modulated by 74%; moreover, a 180°phase shift is achieved at 1.08 THz. Our tunable metamaterial device has myriad potential applications, including terahertz spatial light modulation, phase modulation, and chemical sensing. Furthermore, the scheme that we have implemented can be scaled to operate at other frequencies, thereby enabling a wide range of distinct applications.

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Bianisotropic Photonic Metamaterials

Cited by 152 publications

References 55 publications

Functional approach to electrodynamics of media

Functional approach to electrodynamics of media

Chiral Metamaterial Based Multifunctional Sensor Applications

Voltage-tunable dual-layer terahertz metamaterials

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