3D THz metamaterials from micro/nanomanufacturing

Moser, H. O.; Rockstuhl, Carsten

doi:10.1002/lpor.201000019

Cited by 68 publications

(47 citation statements)

References 214 publications

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“…Traditional planar metamaterials based on SRRs and their hybrid modifications have been extensively studied in recent years for demonstrating negative refraction, magnetoinductive waves, THz modulators and biological/chemical sensors [21][22][23][24][25][26][27][28].…”

Section: And References Therein)mentioning

confidence: 99%

Extremely high Q -factor metamaterials due to anapole excitation

et al. 2017

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We demonstrate that ideal anapole metamaterials have infinite Q-factor. We have designed and fabricated a metamaterial consisting of planar metamolecules which exhibit anapole behavior in the sense that the electric dipole radiation is almost cancelled by the toroidal dipole one, producing thus an extremely high Q-factor at the resonance frequency. The size of the system, at the mm range, and the parasitic magnetic quadrupole radiation are the factors limiting the size of the Q-factor. In spite of the very low radiation losses the local fields at the metamolecules are extremely high, of the order of 4 10 higher than the external incoming field.

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Section: And References Therein)mentioning

confidence: 99%

Extremely high Q -factor metamaterials due to anapole excitation

et al. 2017

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“…Although the described advantages, the artificial metamaterials inevitably suffer from narrow operating bandwidths due to resonances, extremely limiting their practical applications. [19][20][21][22][23][24][25][26][27] Latest developments show that periodicity is not obligatory for metamateirals if the resonance response of unit cells predominantly manipulate the propagation of electromagnetic wave, 28 indicating superiority in comparison to photonic and phonon crystals. Our group's previous work showed that the strong coupling effects among the periodic unit cells can be effectively weakened by introducing defects into LHMs to eliminate periodicity.…”

Section: Introductionmentioning

confidence: 99%

Review Article: The weak interactive characteristic of resonance cells and broadband effect of metamaterials

Zhao

Song

2014

AIP Advances

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Articles you may be interested inEffects of inter-resonator coupling in split ring resonator loaded metamaterial transmission lines J. Appl. Phys. 115, 194903 (2014); 10.1063/1.4876444 Broadband subwavelength imaging using non-resonant metamaterials Appl. Phys. Lett. 104, 073502 (2014); 10.1063/1.4865897Dispersion effects in Fakir's bed of nails metamaterial waveguides Metamaterials are artificial media designed to control electromagnetic wave propagation. Due to resonance, most present-day metamaterials inevitably suffer from narrow bandwidth, extremely limiting their practical applications. On the basis of tailored properties, a metamaterial within which each distinct unit cell resonates at its inherent frequency and has almost no coupling effect with the other ones, termed as weak interaction system, can be formulated. The total response of a weak interaction system can be treated as an overlap of the single resonance spectrum of each type of different unit cells. This intriguing feature therefore makes it possible to accomplish multiband or broadband metamaterials in a simple way. By introducing defects into metamaterials to form a weak interaction system, multiband and broadband electromagnetic metamaterials have first been experimentally demonstrated by our group. The similar concept can also be readily extended to acoustic and seismic metamaterials. C 2014 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.

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“…Up to now, due to fabrication limitation [35,36] , most plasmonic metamaterials exhibiting PIT have been demon strated in planar or multi-layered structures by electric coup ling rather than by magnetic coupling [28, 30, 37 -40] . Recently, a number of plasmonic structures with magnetic resonances have also been proposed because of their potential advantages [41,42] .…”

Section: Introductionmentioning

confidence: 99%

Magnetic plasmon induced transparency in three-dimensional metamolecules

Chen

Yang

et al. 2012

Nanophotonics

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In a laser-driven atomic quantum system, a continuous state couples to a discrete state resulting in quantum interference that provides a transmission peak within a broad absorption profi le the so-called electromagnetically induced transparency (EIT). In the fi eld of plasmonic metamaterials, the subwavelength metallic structures play a role similar to atoms in nature. The interference of their near-fi eld coupling at plasmonic resonance leads to a plasmon induced transparency (PIT) that is analogous to the EIT of atomic systems. A sensitive control of the PIT is crucial to a range of potential applications such as slowing light and biosensor. So far, the PIT phenomena often arise from the electric resonance, such as an electric dipole state coupled to an electric quadrupole state. Here we report the fi rst three-dimensional photonic metamaterial consisting of an array of erected U-shape plasmonic gold nanostructures that exhibits PIT phenomenon with magnetic dipolar interaction between magnetic meta molecules. We further demonstrate using a numerical simulation that the coupling between the different excited pathways at an intermediate resonant wavelength allows for a π phase shift resulting in a destructive interference. A classical RLC circuit was also proposed to explain the coupling effects between the bright and dark modes of EIT-like electromagnetic spectra. This work paves a promising approach to achieve magnetic plasmon devices.

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3D THz metamaterials from micro/nanomanufacturing

Cited by 68 publications

References 214 publications

Extremely high Q -factor metamaterials due to anapole excitation

Extremely high Q -factor metamaterials due to anapole excitation

Review Article: The weak interactive characteristic of resonance cells and broadband effect of metamaterials

Magnetic plasmon induced transparency in three-dimensional metamolecules

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