Metamaterial with randomized patterns for negative refraction of electromagnetic waves

Chen, H.; Ran, Lixin; Wang, D.; Huangfu, Jiangtao; Jiang, Qian; Kong, Jin Au

doi:10.1063/1.2165088

Cited by 34 publications

(15 citation statements)

References 23 publications

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“…Metafilms can be thought of as the bridge between three-dimensional (3D) metamaterials and the so-called frequency-selective surfaces [8]. The functionality of frequency-selective surfaces is based on the periodicity of the constituent elements, and is described by coherent wave interference concepts such as Bloch waves or Floquet modes [8][9][10]. Conversely, metafilms function on the same basis as metamaterials; their macroscopic properties depend mostly on the structure of the subwavelength resonators, and not necessarily on their periodic distribution.…”

Section: Introductionmentioning

confidence: 99%

Effects of Microstructure Variations on Macroscopic Terahertz Metafilm Properties

O’Hara

Смирнова

Azad

et al. 2007

Active and Passive Electronic Components

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The properties of planar, single-layer metamaterials, or metafilms, are studied by varying the structural components of the splitring resonators used to comprise the overall medium. Measurements and simulations reveal how minor design variations in split-ring resonator structures can result in significant changes in the macroscopic properties of the metafilm. A transmissionline/circuit model is also used to clarify some of the behavior and design limitations of the metafilms. Though our results are illustrated in the terahertz frequency range, the work has broader implications, particularly with respect to filtering, modulation, and switching devices.

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Section: Introductionmentioning

confidence: 99%

Effects of Microstructure Variations on Macroscopic Terahertz Metafilm Properties

O’Hara

Смирнова

Azad

et al. 2007

Active and Passive Electronic Components

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“…Since the experimental demonstration of the existence of negative refraction inside metamaterial composed of rings and wires was reported in 2001 [1], several studies aimed at verifying the existence of negative index metamaterials (NIMs) have been reported and exhibited [2][3][4][5][6][7][8]. The phenomenon of negative refraction, predicted to occur in NIMs obtained by a structured square split resonant ring and metal wire (SSRR-MW) metamaterial with simultaneously negative permittivity and negative permeability, has an important application in the electromagnetic fields.…”

Section: Introductionmentioning

confidence: 99%

Multiple frequency bands of square split resonant rings and metal wire metamaterial

Gao

Zhang

et al. 2013

Appl. Opt.

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This work presents experimental measurements of two square split resonant ring and metal wire (SSRR-MW) samples with different cell sizes at microwave frequencies. The geometrical sizes of the metamaterial cells are found to play an important role in the resonant frequency. Cells with different geometrical sizes are chosen to stack into a two-layer or three-layer metamaterial unit to realize the multiple negative passbands. The effective parameters of three separate SSRR-MW models (a one-layer unit, a two-layer unit, and a three-layer unit) are retrieved from the simulation data. The composed models exhibit two or three negative bands by overlapping the passbands of original cells and broadening the overall bandwidth. The recovered parameters show good agreement with the theoretical analysis.

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“…30,33,58,59 Subsequently, Gorkunov et al 60 theoretically demonstrated that the randomly distributed defects could profoundly influence the resonant properties of metamaterials, and the existence of defects might result in multiband magnetic responses. Then, Chen et al 61 experimentally confirmed negative refraction via a metamaterial with randomized contour patterns. Later, Yannopapas 62 further proposed a disordered binary photonic alloy composed of polaritonic and plasmonic microspheres that could achieve negative refractive index.…”

Section: The Defect Effect Of Lhmsmentioning

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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Metamaterial with randomized patterns for negative refraction of electromagnetic waves

Cited by 34 publications

References 23 publications

Effects of Microstructure Variations on Macroscopic Terahertz Metafilm Properties

Effects of Microstructure Variations on Macroscopic Terahertz Metafilm Properties

Multiple frequency bands of square split resonant rings and metal wire metamaterial

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

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