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...

Gold nanoclusters with a wide range of fluorescence characteristics generated in situ in polymer thin films: potential gas sensing application

2017 ◽  
Vol 46 (46) ◽  
pp. 16236-16243 ◽  
Author(s):  
U. Divya Madhuri ◽  
T. P. Radhakrishnan
Keyword(s):  
Thin Films ◽  
Potential Application ◽  
Gas Sensing ◽  
Gold Nanoclusters ◽  
Emission Characteristics ◽  
Gas Detectors ◽  
Fluorescence Characteristics ◽  
Wide Range ◽  
Sensing Application

Gold nanoclusters with variable emission characteristics are generated in situ in polymer films by mild thermal annealing and their potential application as gas detectors is demonstrated.

scholarly journals Carbon Dioxide Gas Sensor Based on Polyhexamethylene Biguanide Polymer Deposited on Silicon Nano-Cylinders Metasurface

2020 ◽  
Author(s):  
Muhammad Ali Butt ◽  
Nikolay Lvovich Kazanskiy ◽  
Svetlana Nikolaevna Khonina
Keyword(s):  
Gas Sensing ◽  
Polarized Light ◽  
Resonance Wavelength ◽  
Host Material ◽  
Perfect Absorber ◽  
Angle Of Incidence ◽  
Co2 Gas ◽  
Gas Concentration ◽  
Sensing Applications ◽  
Polyhexamethylene Biguanide

In this paper, we have numerically investigated a metasurface based perfect absorber design established on the impedance matching phenomena. The paper comprises of two parts. In the first part, the device performance of the perfect absorber is studied which is composed of a silicon Nano-cylindrical meta-atoms periodically arranged on the thin gold layer. The device design is unique which works for both x-oriented and y-oriented polarized light, besides independent of the angle of incidence. In the second part of the paper, CO2 gas sensing application is explored by depositing a thin layer of functional host material polyhexamethylene biguanide polymer on the metasurface. The refractive index of the host material decreases due to the absorption of the CO2 gas. As a result, the resonance wavelength of the perfect absorber performs a prominent blueshift. With the help of the proposed sensor design based on metasurface, the CO2 gas concentration range of 0-524 ppm is detected. The maximum sensitivity of ~17.3 pm/ppm is acquired for the gas concentration of 434 ppm. The study presented in this work explores the opportunity of utilizing metasurface perfect absorber for gas sensing applications by employing the functional host materials.

Glycothermal Synthesis of VO2(B) Nanoparticles for Gas Sensing Application

2020 ◽  
Vol 20 (3) ◽  
pp. 1946-1954 ◽  
Author(s):  
Hongmei Zhu ◽  
Zhengjie Zhang ◽  
Xuchuan Jiang
Keyword(s):  
Vanadium Dioxide ◽  
Gas Sensing ◽  
Operating Temperature ◽  
Environmental Safety ◽  
Vanadium Oxides ◽  
Good Sensitivity ◽  
Reaction Conditions ◽  
The Family ◽  
Sensing Application ◽  
Sensing Performance

This study represents a facile but efficient glycothermal method for synthesis of vanadium dioxide, VO2(B) nanoparticles with various geometries from spheres to rods, flakes or their agglomeration structures, by controlling reaction conditions (e.g., vanadium resources, reducing agents and surfactants). The as-prepared VO2(B) nanoparticles were characterized in microstructure and composition, and also examined in terms of gas sensing performance. It was found that the VO2(B) nanoparticles exhibit a good sensitivity towards alcohols (ethanol, isopropanol, and butanol) and acetone at the optimised operating temperature of 300 °C. The gas sensing performance was further compared with other vanadium oxides investigated previously, such as V2O5, Na1.08V3O8. The plausible gas sensing mechanism of the as-prepared nanoparticles was discussed in detail. This study would expand the family of vanadium oxides that can be made as potential sensors for applications in detecting environmental safety and human health.

scholarly journals Carbon Dioxide Gas Sensor Based on Polyhexamethylene Biguanide Polymer Deposited on Silicon Nano-Cylinders Metasurface

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 378
Author(s):  
Nikolay Lvovich Kazanskiy ◽  
Muhammad Ali Butt ◽  
Svetlana Nikolaevna Khonina
Keyword(s):  
Gas Sensing ◽  
Polarized Light ◽  
Resonance Wavelength ◽  
Host Material ◽  
Perfect Absorber ◽  
Angle Of Incidence ◽  
Co2 Gas ◽  
Gas Concentration ◽  
Sensing Applications ◽  
Polyhexamethylene Biguanide

In this paper, we have numerically investigated a metasurface based perfect absorber design, established on the impedance matching phenomena. The paper comprises of two parts. In the first part, the device performance of the perfect absorber—which is composed of silicon nano-cylindrical meta-atoms, periodically arranged on a thin gold layer—is studied. The device design is unique and works for both x-oriented and y-oriented polarized light, in addition to being independent of the angle of incidence. In the second part of the paper, a CO2 gas sensing application is explored by depositing a thin layer of functional host material—a polyhexamethylene biguanide polymer—on the metasurface. The refractive index of the host material decreases due to the absorption of the CO2 gas. As a result, the resonance wavelength of the perfect absorber performs a prominent blueshift. With the help of the proposed sensor design, based on metasurface, the CO2 gas concentration range of 0–524 ppm was detected. A maximum sensitivity of 17.3 pm/ppm was acquired for a gas concentration of 434 ppm. The study presented in this work explores the opportunity of utilizing the metasurface perfect absorber for gas sensing applications by employing functional host materials.

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.

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