Sensing application of metamaterial perfect absorber based on nanodisk array

2019 ◽  
Author(s):  
Shuwen Chu ◽  
Huizhen Yuan ◽  
Xuhui Zhang ◽  
Huixuan Gao ◽  
Li Yu ◽  
...  
Keyword(s):  
Perfect Absorber ◽  
Sensing Application ◽  
Metamaterial Perfect Absorber

A voltage-controllable VO2 based metamaterial perfect absorber for CO2 gas sensing application

Nanoscale ◽  
2022 ◽  
Author(s):  
Xiaocan Xu ◽  
Ruijia Xu ◽  
Yu-Sheng Lin
Keyword(s):  
Vanadium Dioxide ◽  
Potential Application ◽  
Gas Sensing ◽  
Perfect Absorber ◽  
Co2 Gas ◽  
Tuning Mechanism ◽  
Gas Molecules ◽  
Sensing Application ◽  
Temperature Manipulation ◽  
Metamaterial Perfect Absorber

Vanadium dioxide (VO2) based metamaterial perfect absorbers (MPAs) have high potential application values in sensing gas molecules. However, such tuning mechanism via temperature manipulation lacks the compatibility to the electronic...

Reversibly-propagational metamaterial absorber for sensing application

2018 ◽  
Vol 32 (04) ◽  
pp. 1850044 ◽  
Author(s):  
Bui Son Tung ◽  
Bui Xuan Khuyen ◽  
Young Joon Yoo ◽  
Joo Yull Rhee ◽  
Ki Won Kim ◽  
...  
Keyword(s):  
Oblique Incidence ◽  
Geometrical Structure ◽  
Incident Angle ◽  
Metamaterial Absorber ◽  
Perfect Absorber ◽  
Perfect Absorption ◽  
Great Magnitude ◽  
X Band ◽  
Sensing Application ◽  
Metamaterial Perfect Absorber

We investigated a reversibly-propagational metamaterial perfect absorber (MPA) for X band using two separated identically-patterned copper layers, which were deposited on continuous dielectric FR-4 layers. By adjusting oblique incidence, two separated resonances are excited, then come close to each other and is finally merged to be a perfect absorption peak at 10.1 GHz. The nature of resonance is the quadrupole mode instead of the fundamental resonances in common MPAs. The mechanism of perfect absorption is the coupling of two quadrupole resonances at their superposition, leading to an enhancement of energy absorption. Finally, we numerically presented the capability of sensing thin resonant substance using the proposed MPA. The characteristic resonance of substance, which does not appear on the absorption spectrum at the limited thickness of bare substance layer, is detected with a great magnitude of signal by exploiting the absorption resonance of MPA. Our work provides another way to obtain the reversibly-propagational absorption by controlling the incident angle instead of the geometrical structure, and might be useful for the potential devices based on MPA such as detectors and sensors.

Numerical investigation of a tunable metamaterial perfect absorber consisting of two-intersecting graphene nanoring arrays

2019 ◽  
Vol 383 (24) ◽  
pp. 3030-3035 ◽  
Author(s):  
Chunlian Cen ◽  
Yubin Zhang ◽  
Cuiping Liang ◽  
Xifang Chen ◽  
Zao Yi ◽  
...  
Keyword(s):  
Numerical Investigation ◽  
Perfect Absorber ◽  
Tunable Metamaterial ◽  
Metamaterial Perfect Absorber

scholarly journals Flexible Broadband Metamaterial Perfect Absorber Based on Graphene-Conductive Inks

Photonics ◽  
2021 ◽  
Vol 8 (10) ◽  
pp. 440
Author(s):  
Le Van Long ◽  
Nguyen Sy Khiem ◽  
Bui Son Tung ◽  
Nguyen Thanh Tung ◽  
Trinh Thi Giang ◽  
...  
Keyword(s):  
Impedance Matching ◽  
Optical Filters ◽  
Wide Frequency Range ◽  
Absorption Feature ◽  
Perfect Absorber ◽  
Frequency Range ◽  
Absorption Mechanism ◽  
Polarization Insensitive ◽  
Metamaterial Perfect Absorber ◽  
High Absorption

In this work, we proposed a flexible broadband metamaterial perfect absorber (FBMPA) by exploiting a pasted conductive-graphene ink on a polyimide substrate. For the flat FBMPA, an absorption over 90% was found to cover a wide frequency range (from 7.88 to 18.01 GHz). The high-absorption feature was polarization-insensitive and regarded as stable with respect to the oblique incidence up to 30 degrees of electromagnetic wave. The high absorption was maintained well even when the absorber was wrapped. That is, the FBMPA was attached to cylindrical surfaces (with the varying radius from 4 to 50 cm). For both flat and curved states, the absorption mechanism was explained by the perfect impedance matching and the dielectric loss of the proposed absorber. Our work provides the groundwork for the commercialization of future meta-devices such as sensors, optical filters/switchers, photodetectors, and energy converters.

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