Dark mode tailored electromagnetically induced transparency in terahertz metamaterials

Jin, Kailong; Yan, Xiaona; Wang, Xiaoyan; Zhang, Wenjie; Jin, Zuanming; Dai, Yong; Ma, Guohong; Yao, Jianquan

doi:10.1007/s00340-019-7174-3

Cited by 14 publications

(6 citation statements)

References 37 publications

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“…e corresponding modulation methods are passive modulation and active modulation. Jin et al [38] designed a novel terahertz metamaterial structure consisting of a pair of subwavelength inverse U-shaped SRR resonators and tangential resonators to achieve the weak coupling region EIT effect. eoretical and simulation results show that the EIT-like phenomena can be trimmed by modulating the relative coupling distance between the broken filaments and SRRs or the mutual distance between the SRR pairs, as shown in Figure 5.…”

Section: Optimizing Metamaterials Structuresmentioning

confidence: 99%

Research Advance on the Sensing Characteristics of Refractive Index Sensors Based on Electromagnetic Metamaterials

Wang¹,

Wang²,

Wang³

2021

Advances in Condensed Matter Physics

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Among different sensing platforms, metamaterials composed of subwavelength or deep subwavelength sized metal resonance elements arrays that are etched on semiconductor substrates or dielectric substrates exhibit excellent characteristics due to the strong localization and enhancement of resonance electromagnetic fields. As a new type of detection method, metamaterial sensors can break through the resolution limit of traditional sensors for a small amount of substance and have the advantages of high sensitivity, fast response, and simple measurement. Significant enhancement of the sensing characteristics of metamaterial sensors was realized by optimizing microstructures (single split-ring, double split-ring, nested split-ring, asymmetric split-ring, three-dimensional split-ring, etc.), using ultrathin substrates or low-index substrate materials, etching away local substrate, and integrating microfluidic channel, etc. This paper mainly reviews the research advance on the improvement of sensing characteristics from optimizing resonance structures and changing substrate materials and morphology. Furthermore, the sensing mechanism and main characteristic parameters of metamaterial sensors are introduced in detail, and the development trend and challenge of metamaterial sensing applications are prospected. It is believed that metamaterial sensors will have potential broader application prospects in environmental monitoring, food safety control, and biosensing in the future.

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Section: Optimizing Metamaterials Structuresmentioning

confidence: 99%

Research Advance on the Sensing Characteristics of Refractive Index Sensors Based on Electromagnetic Metamaterials

Wang¹,

Wang²,

Wang³

2021

Advances in Condensed Matter Physics

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“…These materials possess controllable electromagnetic properties, enabling adjustment of the EIT phenomenon. Researchers have extensively explored this avenue [20][21][22][23][24][25][26][27][28][29]. For instance, Xiao et al explored the dynamic control of an EIT-like phenomenon in hybrid metamaterials by placing a monolayer of graphene beneath a metal-based dark resonator.…”

Section: Introductionmentioning

confidence: 99%

Active dual-control electromagnetically induced transparency analog in metal- vanadium dioxide-photosensitive silicon hybrid metamaterial

Shu,

Sun

2024

Mater. Res. Express

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We investigate an active dual-control metamaterial leveraging electromagnetically induced transparency (EIT), exploiting near-field interactions between electric and magnetic dipole resonances. Our hybrid strip element, combining metal and vanadium dioxide, generates electric dipole resonance, while split-ring resonators integrating metal and photosensitive silicon induce magnetic dipole resonance. Simulations confirm coupling validity and demonstrate dynamic adjustability of EIT via temperature and light intensity changes. EIT modulation transitions between transparent and non-resonant states due to temperature fluctuations, or resonant states with varying light intensity. Temperature adjustments dominate when both factors are altered. Analysis via a coupled oscillator model reveals modulation of damping rates as the origin of disappearance curve variations. This innovative design enhances tunable EIT metamaterial versatility, with implications for high transmission ratios and adaptable slow-light effects in terahertz applications.

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“…In section 3, the construction methods of passive EIT metamaterials in the microwave [78][79][80], terahertz [81,82], and optical frequencies [83][84][85] are reviewed. In section 4, many approaches of dynamically controllable EIT effects are discussed by introducing active materials into metamaterials such as graphenes [86][87][88][89][90], photosensitive materials [91][92][93], microelectromechanical systems (MEMs) [94], and phase change materials [95], etc. Following this, the properties of EIT metamaterial-based for refractive index sensing [96][97][98][99][100][101][102][103][104][105], slowing light [106][107][108][109][110][111][112][113], enhancing absorption [114][115][116][117][118] are also reviewed in section 5.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetically induced transparency metamaterials: theories, designs and applications

Zhu¹,

Dong²

2022

J. Phys. D: Appl. Phys.

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Electromagnetically induced transparency (EIT) stems from a quantum system, where an opaque atomic medium appears the narrow transparent state within a wide absorption area. This phenomenon can be achieved by quantum interference of pumping light and detecting light at different energy levels of transitions. In the generation process of EIT effect, in addition to transparent state, the atomic medium is usually accompanied with a strong dispersion effect, which will bright about a significant reduction of light velocity, thus realizing many important applications, such as slow light propagations. Although the EIT effect has many important applications, its application scenarios are greatly limited due to the fact that EIT realization usually requires specific and complicated conditions, such as refrigeration temperature, high intensity laser, etc. Recently, the analogue of EIT effect in metamaterial has attracted increasing attentions due to its advantages such as controllable room temperature and large operating bandwidth. Metamaterial analogue of EIT effect has become a new research focus. In this article, we review current research progresses on EIT metamaterials. Firstly, we describe the theoretical models for analyzing EIT metamaterials, including the mechanical oscillator model and the equivalent circuit model. Then, we describe the simulations, designs and experiments of passive EIT metamaterials with fixed structures and active EIT metamaterials with tunable elements. Furthermore, the applications of EIT metamaterials in the areas of slow lights, sensings, absorptions and other fields are also reviewed. Finally, the possible directions and key issues of future EIT metamaterial researches are prospected.

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Dark mode tailored electromagnetically induced transparency in terahertz metamaterials

Cited by 14 publications

References 37 publications

Research Advance on the Sensing Characteristics of Refractive Index Sensors Based on Electromagnetic Metamaterials

Research Advance on the Sensing Characteristics of Refractive Index Sensors Based on Electromagnetic Metamaterials

Active dual-control electromagnetically induced transparency analog in metal- vanadium dioxide-photosensitive silicon hybrid metamaterial

Electromagnetically induced transparency metamaterials: theories, designs and applications

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