scholarly journals Broadband selection of EHF radiation of metamaterial surface obtained by photolithography

2021 ◽  
Vol 2140 (1) ◽  
pp. 012012
Author(s):  
K V Bilinskiy ◽  
K V Dorozhkin ◽  
V D Moskalenko ◽  
G E Kuleshov ◽  
A V Badin ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Time Domain ◽  
Optical Methods ◽  
Ring Resonators ◽  
Electromagnetic Response ◽  
Frequency Range ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Experimental Researches ◽  
Selection Of

Abstract In paper results of research of metamaterial surface based on split-ring resonators obtained by photolithography are presented. Numerical simulation of electromagnetic response of the created structure are shown. Experimental researches of the transmission coefficient using quasi-optical methods of continuous and time-domain spectroscopy in the frequency range from 34 to 200 GHz were carried out. Area of broadband screening in the EHF range has been found.

Tunable and switchable resonance in optically-controlled nested metamaterials at terahertz frequencies

2016 ◽  
Vol 30 (03) ◽  
pp. 1650011
Author(s):  
Yong-Li Che ◽  
Xiao-Long Cao ◽  
Jian-Quan Yao
Keyword(s):  
Gallium Arsenide ◽  
Quartz Substrate ◽  
Optical Excitation ◽  
Ring Resonators ◽  
Metallic State ◽  
Frequency Range ◽  
Metamaterial Structure ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Terahertz Frequencies

The asymmetrical nested metamaterial, composed of two split-ring resonators (SRRs) and two embedded gallium arsenide (GaAs) islands placed in the two SRRs, has been elaborately designed on quartz substrate. Its tunable and switchable resonances at terahertz (THz) frequencies are numerically demonstrated here based on different conductivities of GaAs, which can be transformed from semiconductor to metallic state through appropriate optical excitation. Without photoexcitation, our designed metamaterial has three resonance peaks in the range of monitored frequency range, and they are located at 0.813, 1.269 and 1.722 THz, respectively. As the conductivity of the two GaAs islands increases, different new resonances appear and constantly strengthen. Finally, four new resonant points are generated, at 0.432, 0.948, 1.578 and 1.875 THz, respectively. At the same time, the metamaterial structure is changed from the original nested mode to a new integral mode. Applying reversible changing conductivity of semiconductor to push the conversion of resonance, this asymmetrical nested design provides a new instance in application and development of additional THz devices.

Analytical circuit model for split ring resonators in the far infrared and optical frequency range

Metamaterials ◽  
2009 ◽  
Vol 3 (2) ◽  
pp. 57-62 ◽  
Author(s):  
V. Delgado ◽  
O. Sydoruk ◽  
E. Tatartschuk ◽  
R. Marqués ◽  
M.J. Freire ◽  
...  
Keyword(s):  
Far Infrared ◽  
Circuit Model ◽  
Ring Resonators ◽  
Optical Frequency ◽  
Frequency Range ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Optical Frequency Range

Graphene-based optical modulator realized in metamaterial split-ring resonators operating in the THz frequency range

2014 ◽  
Author(s):  
Riccardo Degl'Innocenti ◽  
David S. Jessop ◽  
Yash D. Shah ◽  
Juraj Sibik ◽  
Axel Zeitler ◽  
...  
Keyword(s):  
Ring Resonators ◽  
Optical Modulator ◽  
Frequency Range ◽  
Split Ring ◽  
Split Ring Resonators

Terahertz electromagnetic response of split ring resonators

2008 ◽  
Author(s):  
Ziyu Yan ◽  
Xue Jiang ◽  
Qingli Zhou ◽  
Cunlin Zhang
Keyword(s):  
Ring Resonators ◽  
Electromagnetic Response ◽  
Split Ring ◽  
Split Ring Resonators

scholarly journals Effects of Microstructure Variations on Macroscopic Terahertz Metafilm Properties

2007 ◽  
Vol 2007 ◽  
pp. 1-10 ◽  
Author(s):  
John F. O'Hara ◽  
Evgenya Smirnova ◽  
Abul K. Azad ◽  
Hou-Tong Chen ◽  
Antoinette J. Taylor
Keyword(s):  
Ring Resonator ◽  
Single Layer ◽  
Split Ring Resonator ◽  
Ring Resonators ◽  
Terahertz Frequency ◽  
Structural Components ◽  
Frequency Range ◽  
Terahertz Frequency Range ◽  
Split Ring ◽  
Split Ring Resonators

The properties of planar, single-layer metamaterials, or metafilms, are studied by varying the structural components of the split-ring 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 transmission-line/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.

Properties and Numerical Simulation of Electromagnetic Meta-Materials (SRR) Based on Ceramic Substrate

2008 ◽  
Vol 368-372 ◽  
pp. 570-572
Author(s):  
Bo Du ◽  
Q. Zhao ◽  
Ji Zhou ◽  
L. Kang
Keyword(s):  
Numerical Simulation ◽  
Dielectric Constant ◽  
Composite Materials ◽  
Resonance Frequency ◽  
Ceramic Substrate ◽  
Ring Resonators ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Theoretical Design ◽  
Permittivity And Permeability

Electromagnetic meta-materials are artificial and periodical materials which both the permittivity and permeability are simultaneously negative. Electromagnetic meta-materials represent a new concept where composite materials are designed to display particular properties. The work which we had finished includes theoretical design and numerical simulation of the structure, fabrication of the samples and measurement of the properties. We designed electromagnetic meta-materials which composed by periodic split ring resonators (SRR) based on ceramics and then researched the influence by microwave guide. It is showed that the resonance frequency of meta-materials can be adjusted by dielectric constant and thickness of ceramic substrate.

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