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.

Detection of internal defects in metal fibre composite materials using double-waveguide probe loaded with split-ring resonators

2019 ◽  
Vol 30 (12) ◽  
pp. 125013
Author(s):  
Xuexue Lei ◽  
Xiaoqing Yang ◽  
Junlong Chen ◽  
Hui Xiao ◽  
Jingyu Zhang ◽  
...  
Keyword(s):  
Composite Materials ◽  
Fibre Composite ◽  
Ring Resonators ◽  
Internal Defects ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Metal Fibre

scholarly journals Design and evaluation of split-ring resonators for aptamer-based biosensors

2018 ◽  
Vol 7 (1) ◽  
pp. 101-111 ◽  
Author(s):  
Tobias Reinecke ◽  
Johanna-Gabriela Walter ◽  
Tim Kobelt ◽  
André Ahrens ◽  
Thomas Scheper ◽  
...  
Keyword(s):  
Resonance Frequency ◽  
Split Ring Resonator ◽  
Target Protein ◽  
Ring Resonators ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Molecular Binding ◽  
Novel Approach ◽  
Highly Sensitive ◽  
Line Theory

Abstract. Split-ring resonators are electrical circuits, which enable highly sensitive readout of split capacity changes via a measurement of the shift in the resonance frequency. Thus, functionalization of the split allows the development of biosensors, where selective molecular binding causes a change in permittivity and therefore a change in split capacity. In this work, we present a novel approach using transmission line theory to describe the dependency between permittivity of the sample and resonance frequency. This theory allows the identification of all relevant parameters of a split-ring resonator and thus a target-oriented optimization process. Hereby all setup optimizations are verified with measurements. Subsequently, the split of a resonator is functionalized with aptamers and the sensor response is investigated. This preliminary experiment shows that introducing the target protein results in a shift in the resonance frequency caused by a permittivity change due to aptamer-mediated protein binding, which allows selective detection of the target protein.

scholarly journals Optically Tunable Terahertz Metasurfaces Using Liquid Crystal Cells Coated with Photoalignment Layers

Crystals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1100
Author(s):  
Yi-Hong Shih ◽  
Xin-Yu Lin ◽  
Harry Miyosi Silalahi ◽  
Chia-Rong Lee ◽  
Chia-Yi Huang
Keyword(s):  
Liquid Crystal ◽  
Resonance Frequency ◽  
Pump Beam ◽  
Frequency Tuning ◽  
Ring Resonators ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Terahertz Region ◽  
Crystal Cells ◽  
Terahertz Filter

An optically tunable terahertz filter was fabricated using a metasurface-imbedded liquid crystal (LC) cell with photoalignment layers in this work. The LC director in the cell is aligned by a pump beam and makes angles θ of 0, 30, 60 and 90° with respect to the gaps of the split-ring resonators (SRRs) of the metasurface under various polarized directions of the pump beam. Experimental results display that the resonance frequency of the metasurface in the cell increases with an increase in θ, and the cell has a frequency tuning region of 15 GHz. Simulated results reveal that the increase in the resonance frequency arises from the birefringence of the LC, and the LC has a birefringence of 0.13 in the terahertz region. The resonance frequency of the metasurface is shifted using the pump beam, so the metasurface-imbedded LC cell with the photoalignment layers is an optically tunable terahertz filter. The optically tunable terahertz filter is promising for applications in terahertz telecommunication, biosensing and terahertz imaging.

scholarly journals Tuning of resonance frequency in array of split-ring resonators in terahertz range

2014 ◽  
Vol 54 (1) ◽  
pp. 15-19 ◽  
Author(s):  
Gediminas Šlekas ◽  
Žilvinas Kancleris ◽  
Dalius Seliuta
Keyword(s):  
Resonance Frequency ◽  
Terahertz Range ◽  
Ring Resonators ◽  
Split Ring ◽  
Split Ring Resonators

Coupled ring resonator for microwave characterization of dielectric materials

2012 ◽  
Vol 4 (2) ◽  
pp. 241-246 ◽  
Author(s):  
Mahima Kapoor ◽  
K. S. Daya ◽  
G. S. Tyagi
Keyword(s):  
Dielectric Constant ◽  
Spirulina Platensis ◽  
Ring Resonator ◽  
Dielectric Materials ◽  
Split Ring Resonator ◽  
Ring Resonators ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Closed Ring

In this paper characterization of dielectric materials in liquid and powder phase using concentric closed and split ring resonators of length λ, λ/2, and λ/4 is reported. Experimental results have been validated by simulations and theoretically modeling. Sensitivity of the resonator with closed rings was maximum. Experimentally extracted values of dielectric constant of ferrite ranged from 14.05 to 15.1 with closed ring resonators and from 13.6 to 14.02 with split ring resonator, respectively. For spirulina platensis the dielectric constant was lying in the range 1.78–1.93 and 1.74–2.04 with closed ring and split ring resonators, respectively. The values extracted experimentally are in good agreement with simulation and theoretically found values. However, the values obtained from closed ring resonator were in agreement with the dielectric constant values of ferrite and spirulina platensis.

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.

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