Very High Q-Factor Based On G-Shaped Resonator Type Metamaterial Absorber

2018 ◽  
pp. 160 ◽  
Author(s):  
Khalid Saeed Lateef Al-Badri
Keyword(s):  
Resonance Frequency ◽  
Metamaterial Absorber ◽  
Q Factor ◽  
High Q ◽  
Image Sensing ◽  
At Resonance ◽  
Band Filter ◽  
Simulation Results ◽  
Very High ◽  
Triple Band

High Q-factor based on absorption can be achieved by tuning (the reflection and the transition percentage). In this work, the simple design and simulated in S-band have been investigated. The simulation results of G-shape resonator are shown triple band of absorption peaks 60%, 91.5%, and 70.3%) at resonance frequency 2.7 GHz, 3.26 GHz, and 4.05 GHz respectively. The results exhibited very high of the Q-factor ( 271 ) at resonance frequency ( 3.26 GHz ).  The high Q-factor can be used to enhance the sensor sensing, narrowband band filter and  image sensing.

scholarly journals Theoretical Investigation of a Simple Design of Triple-Band Terahertz Metamaterial Absorber for High-Q Sensing

2019 ◽  
Vol 9 (7) ◽  
pp. 1410 ◽  
Author(s):  
Tao Chen ◽  
Runyu Zhao ◽  
Ben-Xin Wang
Keyword(s):  
Refractive Index ◽  
Narrow Band ◽  
Metamaterial Absorber ◽  
Resonance Absorption ◽  
Simple Design ◽  
Perfect Absorption ◽  
High Q ◽  
Au Film ◽  
Resonance Modes ◽  
Triple Band

This paper presents a simple metamaterial design to achieve the triple-band near-perfect absorption response that can be used in the area of sensor application. The introduced absorber consists of an array of Au strip and a bulk flat Au film separated by an insulator dielectric layer. Three narrow-band resonance absorption peaks are obtained by superposing three different modes (a fundamental mode resonance and two high-order responses) of the Au strip. These resonance modes (in particular of the last two modes) have large sensitivity to the changes of the surrounding index, overlayer thickness and the refractive index of the overlayer.

scholarly journals Enhanced FANO Structure Based on Tip-Field-Enhancement Theory

2019 ◽  
Vol 9 (23) ◽  
pp. 5009
Author(s):  
Tianchi Zhou ◽  
Bo Zhang ◽  
Yaxin Zhang ◽  
Chao Shu ◽  
Shixiong Liang ◽  
...  
Keyword(s):  
Electromagnetic Fields ◽  
Potential Application ◽  
Field Enhancement ◽  
Antenna Design ◽  
Q Factor ◽  
Split Ring ◽  
High Q ◽  
Time Harmonic ◽  
Microfluidic Sensors ◽  
Simulation Results

High-Q metasurfaces have attracted much interest owing to their potential application in biological sensors. FANO is a type of high-Q factor metasurface. However, it is difficult to achieve large resonant intensity and a high-Q factor at the same time. In this paper, by sharpening the tips of the asymmetrical split-ring FANO structure and letting more charges stack at the tips to enhance tip coupling, the Q factor was significantly improved without sacrificing too much resonant intensity. Simulation results showed that the Q factor increased up to 2.4 times, while the resonant intensity stayed higher than 20 dB, and the experiment results agreed with the simulations. This indicated that the tip-field-enhancement theory can be applied in time-harmonic electromagnetic-fields, and the method proposed here can be used to increase the sensitivity and accuracy of microfluidic sensors. Additionally, other types of research, such as on antenna design, could benefit from this theory.

scholarly journals Deformed microcavities with very high Q-factors and directional farfield emission

2020 ◽  
Vol 238 ◽  
pp. 01006
Author(s):  
Arne Behrens ◽  
Martí Bosch ◽  
Martina Hentschel ◽  
Stefan Sinzinger
Keyword(s):  
Surface Roughness ◽  
State Of The Art ◽  
Whispering Gallery Mode ◽  
Q Factor ◽  
Tapered Fiber ◽  
High Q ◽  
Whispering Gallery ◽  
Q Factors ◽  
Very High

We report the design and optimized fabrication of deformed whispering gallery mode resonators in silica with solely ICP-RIE. This allows us to control the morphology of the resonators more freely and results in low surface roughness. The light was coupled into the resonator using a state of the art tapered fiber approach and we determined the Q-factor in the range of 105

scholarly journals Design of the ultra-thin perfect metamaterial absorber with high Q-factor

2013 ◽  
Vol 62 (24) ◽  
pp. 244101
Author(s):  
Li Si-Jia ◽  
Cao Xiang-Yu ◽  
Gao Jun ◽  
Zheng Qiu-Rong ◽  
Yang Qun ◽  
...  
Keyword(s):  
Metamaterial Absorber ◽  
Q Factor ◽  
High Q ◽  
Perfect Metamaterial Absorber

A very high Q-factor inductor using MEMS technology

2010 ◽  
Author(s):  
N. Khalid ◽  
K. Shah ◽  
J. Singh ◽  
H. P. Le ◽  
J. Devlin ◽  
...  
Keyword(s):  
Q Factor ◽  
High Q ◽  
Mems Technology ◽  
Very High

Triple-band high Q factor Fano resonances in bilayer THz metamaterials

2016 ◽  
Vol 370 ◽  
pp. 116-121 ◽  
Author(s):  
Chunfeng Ding ◽  
Liang Wu ◽  
Degang Xu ◽  
Jianquan Yao ◽  
Xiaohong Sun
Keyword(s):  
Q Factor ◽  
Fano Resonances ◽  
High Q ◽  
Triple Band
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