Gas sensitive material on the basis of cholesteric-nematic mixture doped carbon nanotubes for optoelectronic NH<sub>3</sub> gas sensor

Petryshak, Vasyl; Vistak, Maria; Sushynkyi, Orest Y.; Mikityuk, Z.; Barylo, Hryhoriy I.; Kalimoldayev, Maksat; Kisała, Piotr; Annabaev, A.

doi:10.1117/12.2281015

Cited by 2 publications

(1 citation statement)

References 11 publications

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“…The use of optical and acoustic waves is the basis of a number of measurement systems [4][5][6] . The basis of the resonant control method is the study of the parameters and characteristics of standing acoustic waves that arise in the environment due to the interference of the incident and reflected shockwaves.…”

Section: Principle Of Operationmentioning

confidence: 99%

Design and implementation of ultrasonic self-oscillating and optical meters of media parameters

Bilynsky

Ogorodnik

Lazarev

et al. 2022

Photonics Applications in Astronomy, Communications, Industry, and High Energy Physics Experiments 2022

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The aim of the research is to improve the technical parameters of ultrasonic meters by using the phenomenon of resonance and standing wave. The basis of the resonance method is the using standing acoustic waves arising in the medium due to the interference of the incident and reflected acoustic waves. The paper proposes a mathematical model of the ultrasonic resonance method for measuring parameters of liquid and gaseous media, which can be used for measuring control of parameters such as density, temperature, thickness, flow velocity, and others. To test the adequacy of the proposed model of ultrasonic wave propagation, its computer simulation and experimental studies were carried out. The air was chosen as the test medium (temperature 20° С, velocity 343m/s, atmospheric pressure 1atm). The time diagrams of the signal at the receiver for a distance of 34.3mm, when the resonance condition was satisfied, and for a distance of 34.73mm, when the ant resonance condition was satisfied, were modeled according to the proposed mathematical model. The dependence of the amplitude of the signal at the receiver is given for signal frequencies of 170–20kHz with a transmitter-to-receiver distance of 35.85mm and a sound speed of 340.8m/s. The simulation results confirm the adequacy of the purposed mathematical model. This allows proposing a new class of self-oscillating ultrasonic methods for measuring and control of medium parameters. The block diagram and the principle of operation of the auto-oscillating ultrasound meters for measuring the thickness, and gas temperature of test objects are described.

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Section: Principle Of Operationmentioning

confidence: 99%

Design and implementation of ultrasonic self-oscillating and optical meters of media parameters

Bilynsky

Ogorodnik

Lazarev

et al. 2022

Photonics Applications in Astronomy, Communications, Industry, and High Energy Physics Experiments 2022

View full text Add to dashboard Cite

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Optical sensor based on liquid crystals for detecting the amino acids concentration in aqueous solutions

Zynovii

Vistak

Barylo

et al. 2021

Molecular Crystals and Liquid Crystals

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Gas sensitive material on the basis of cholesteric-nematic mixture doped carbon nanotubes for optoelectronic NH₃ gas sensor

Cited by 2 publications

References 11 publications

Design and implementation of ultrasonic self-oscillating and optical meters of media parameters

Design and implementation of ultrasonic self-oscillating and optical meters of media parameters

Optical sensor based on liquid crystals for detecting the amino acids concentration in aqueous solutions

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Gas sensitive material on the basis of cholesteric-nematic mixture doped carbon nanotubes for optoelectronic NH3 gas sensor

Cited by 2 publications

References 11 publications

Design and implementation of ultrasonic self-oscillating and optical meters of media parameters

Design and implementation of ultrasonic self-oscillating and optical meters of media parameters

Optical sensor based on liquid crystals for detecting the amino acids concentration in aqueous solutions

Contact Info

Product

Resources

About

Gas sensitive material on the basis of cholesteric-nematic mixture doped carbon nanotubes for optoelectronic NH₃ gas sensor