CLASSICAL ELECTROMAGNETICALLY-INDUCED TRANSPARENCY-LIKE SWITCHING CONTROLLED BY POLARIZATION IN METAMATERIALS

2013 ◽  
Vol 22 (01) ◽  
pp. 1350004 ◽  
Author(s):  
XING RI JIN ◽  
JINWOO PARK ◽  
HAIYU ZHENG ◽  
YOUNGPAK LEE ◽  
JOO YULL RHEE ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Electromagnetically Induced Transparency ◽  
Microwave Frequency ◽  
Dielectric Substrate ◽  
Frequency Region ◽  
Ring Resonators ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Incident Electromagnetic Wave ◽  
Induced Transparency

The classical electromagnetically-induced transparency (EIT)-like switching in metamaterials was experimentally demonstrated in the microwave-frequency region. The metameterial unit cell consists of two identical split-ring resonators, which are arranged on both sides of a dielectric substrate with 90°-rotation asymmetry. In our scheme, the classical EIT-like switching can be achieved by changing the polarization of the incident electromagnetic wave.

scholarly journals Electromagnetically induced transparency (EIT)-like transmission in side-coupled complementary split-ring resonators

2012 ◽  
Vol 20 (22) ◽  
pp. 24348 ◽  
Author(s):  
Yinghui Guo ◽  
Lianshan Yan ◽  
Wei Pan ◽  
Bin Luo ◽  
Kunhua Wen ◽  
...  
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Ring Resonators ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Induced Transparency

scholarly journals Tunable electromagnetically induced transparency based on terahertz graphene metamaterial

RSC Advances ◽  
2017 ◽  
Vol 7 (64) ◽  
pp. 40321-40326 ◽  
Author(s):  
Xunjun He ◽  
Yiming Huang ◽  
Xingyu Yang ◽  
Lei Zhu ◽  
Fengmin Wu ◽  
...  
Keyword(s):  
Relaxation Time ◽  
Fermi Energy ◽  
Electromagnetically Induced Transparency ◽  
Ring Resonators ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Induced Transparency

The terahertz EIT graphene metamaterial, consisting of two coupled split ring resonators placed in orthogonally twisted fashion, was proposed by patterning graphene. An actively controlled EIT peak can be obtained by changing relaxation time or Fermi energy of graphene.

scholarly journals Tunable Metamaterial with Gold and Graphene Split-Ring Resonators and Plasmonically Induced Transparency

Nanomaterials ◽  
2018 ◽  
Vol 9 (1) ◽  
pp. 7 ◽  
Author(s):  
Qichang Ma ◽  
Youwei Zhan ◽  
Weiyi Hong
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Transparency Window ◽  
Ring Resonators ◽  
Metamaterial Structure ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Electrostatic Gating ◽  
Tunable Metamaterial ◽  
Induced Transparency ◽  
Plasmonically Induced Transparency

In this paper, we propose a metamaterial structure for realizing the electromagnetically induced transparency effect in the MIR region, which consists of a gold split-ring and a graphene split-ring. The simulated results indicate that a single tunable transparency window can be realized in the structure due to the hybridization between the two rings. The transparency window can be tuned individually by the coupling distance and/or the Fermi level of the graphene split-ring via electrostatic gating. These results could find significant applications in nanoscale light control and functional devices operating such as sensors and modulators.

Wideband and multiband electromagnetically induced transparency in graphene metamaterials

2019 ◽  
Vol 33 (09) ◽  
pp. 1950068 ◽  
Author(s):  
Renxia Ning ◽  
Xiang Gao ◽  
Zhenhai Chen
Keyword(s):  
Communication Technology ◽  
Slow Light ◽  
Electromagnetically Induced Transparency ◽  
Microwave Frequency ◽  
Ring Resonators ◽  
Group Index ◽  
Frequency Range ◽  
Split Ring ◽  
Structure Lead ◽  
Induced Transparency

A multiband tunable electromagnetic induced transparency (EIT) effect in metamaterial at microwave frequency range is investigated. The sandwich structure contains silicon dioxide and gold layers. The metamaterial structure has multiband EIT phenomenon due to coupling with U-Shaped split-ring resonators (SRRs) and cut wire (CW). Two different modes can be obtained in CW and a single band EIT effects in SRRs. Results show that the different resonances in the structure lead to multiband EIT. By adding the finding of the graphene layer on top of the structures, EIT window can be changed obviously. It is shown that the graphene can adjust EIT phenomenon. The group index is calculated to exhibit the slow light effect. The demonstrated phenomenon can provide valuable variety of important applications, including microwave communication technology, microwave devices, slow light and switch devices.

scholarly journals Circularly Polarized Split Ring Resonator Loaded Slot Antenna

2018 ◽  
Vol 7 (5) ◽  
pp. 1-6 ◽  
Author(s):  
A. R. Parvathy ◽  
V. G. Ajay ◽  
M. Thomaskutty
Keyword(s):  
Ground Plane ◽  
Dielectric Substrate ◽  
Open Loop ◽  
Ring Resonators ◽  
Slot Antenna ◽  
Impedance Bandwidth ◽  
Split Ring ◽  
Circularly Polarized ◽  
Split Ring Resonators ◽  
Rectangular Slot

A compact circularly polarized printed slot antenna operating at 2.45 GHz is reported. The antenna consists of a pair of rotated square split ring resonators (SRR) inside a rectangular slot etched on the ground plane of an FR-4 dielectric substrate. A microstrip open-loop feed is etched on the backside of the dielectric substrate to feed the slot and the split ring resonators. The overall size of the antenna is 60x42x1.6 mm3. The measured -10dB impedance bandwidth is 10.48% (2.38-2.64 GHz) and the measured 3dB axial ratio (AR) bandwidth covers the entire impedance bandwidth.

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