A titanium dioxide-based thick film gas sensor for propanol

Vishwakarma, Ankit Kumar; Sharma, A. K.; Mishra, Ashok Kumar; Yadava, Lallan

doi:10.1016/j.mlblux.2023.100184

Cited by 4 publications

(4 citation statements)

References 19 publications

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“…The sensitivity is defined as the slopes of response vs. the gas concentration in ppm. Sensitivity is calculated by the following formula: 25,26 where R a is the resistance in clean air and R g is the resistance in the presence of vapors. The response of the fabricated sensors, S 1 , S 2 , and S 3 , are measured with varying concentrations (0–5000 ppm) of the target gases, acetone, ethanol, and propanol, at a fixed operating temperature of 200 °C.…”

Section: Resultsmentioning

confidence: 99%

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Study of the response behavior of a CdS–SnO₂ thick film for high selectivity towards propanol gas

Vishwakarma,

Sharma,

Yadava

2024

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

“…The sensitivity is dened as the slopes of response vs. the gas concentration in ppm. Sensitivity is calculated by the following formula: 25,26 Sð%Þ ¼…”

Section: Gas Sensing Responsementioning

confidence: 99%

Study of the response behavior of a CdS–SnO₂ thick film for high selectivity towards propanol gas

Vishwakarma,

Sharma,

Yadava

2024

RSC Adv.

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“…When test gases are expose to air oxygen molecules adsorbed on the surface of SnO 2 and capture electron from conduction band of SnO 2 to gives chemisorbed oxygen species as O -, O -2 , O 2at operating temperature. When oxygen ions adsorbed on the surface reach saturation, the surface of the particles forms an electron depletion layer (Vishwakarma et al 2023). The chemisorption reaction is O 2-+ e -→ 2O -(at 150 0 C to 400 0 C).…”

Section: Sensing Mechanismmentioning

confidence: 99%

Sensing performance of lead monoxide (PbO) doped tin oxide thick film gas sensor

Vishwakarma,

Sharma,

Mishra

et al. 2023

Preprint

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Gas sensors based on metal oxide nanostructures are in demand for the safety of human health and protection from environmental pollution. This type of sensors is more attractive in modern life for electronic devices because of low cast, more efficient, high reliability, fast response, more selective, and simplicity. In this paper we report undoped and PbO doped SnO2 thick film to study its microstructural and sensing behaviours. Three samples have been fabricated using screen printing technique on an alumina substrate and this is SnO2 (S1) and 1wt% PbO doped SnO2 (S2 and S3) at 800 0C and 900 0C. XRD and AFM techniques are used to observe the structural behaviours and it is found that the crystallite size decreases with PbO doping. The sensing properties such as sensing response, selectivity and transient time of the deposited thick films were studied at 200°C for various test gases such as ethanol, LPG and acetone concentrations (0–5000 ppm level). We also found that the response of sensor S3 to the test gas ethanol is ~ 3.38 times of LPG and ~ 1.95 times that of acetone. The response and recovery times of the ethanol gas for S3 sensor are 41s and 125s, respectively. Therefore, the deposited sensor S3 is a more suitable sensor for the test gas ethanol than LPG and acetone at 200 0C.

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“…Although the traditional spectroscopic methods have been proven to be effective, they often involve intricate sample preparation procedures and lack the agility required for speedy onsite measurements. In response to these challenges, the demand for highly sensitive and selective temperature sensors has become imperative across various manufacturing sectors 2,4 . The limitations of conventional techniques, coupled with high cost and the necessity for skilled operators, accentuate the urgency of developing innovative approaches for the detection of propanol and its temperature.…”

mentioning

confidence: 99%

Fano resonance in one-dimensional quasiperiodic topological phononic crystals towards a stable and high-performance sensing tool

Almawgani,

Makhlouf Fathy,

E. Alfassam

et al. 2024

Sci Rep

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Phononic crystals (PnCs) emerge as an innovative sensor technology, especially for high-performance sensing applications. This study strives to advance this field by developing new designs of PnC structures that exhibit stability in the face of construction imperfections and deformations, focusing on the evolution of topological PnCs (TPnCs). These designs could be promising to overcome the problem of instability involved in most of the theoretical PnC sensors when they emerge in experimental verification. In particular, the fabrication process of any design could collide with some fluctuations in controlling the size of each component. Thus, Fano resonance is introduced through a one-dimensional (1D) quasiperiodic TPnC. To the best of the author’s knowledge, this study is the first to observe Fano modes in liquid cavities through 1D PnCs. Various quasiperiodic PnC designs are employed to detect the temperature of alcohols (specifically propanol) across an extensive temperature range (160–240 °C). The effects of many geometrical parameters on the sensor stability, such as material thicknesses, are studied. Numerical findings demonstrated that the designed quasiperiodic topological PnCs based on Fibonacci sequence of the second order proved superior performance. This sensing tool provides sensitivity, quality factor and figure-of-merit values of 104,533.33 Hz/°C, 223.69 and 0.5221 (/°C), respectively, through temperature detection of propanol in the range of 160–240 °C.

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A titanium dioxide-based thick film gas sensor for propanol

Cited by 4 publications

References 19 publications

Study of the response behavior of a CdS–SnO₂ thick film for high selectivity towards propanol gas

Study of the response behavior of a CdS–SnO₂ thick film for high selectivity towards propanol gas

Sensing performance of lead monoxide (PbO) doped tin oxide thick film gas sensor

Fano resonance in one-dimensional quasiperiodic topological phononic crystals towards a stable and high-performance sensing tool

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A titanium dioxide-based thick film gas sensor for propanol

Cited by 4 publications

References 19 publications

Study of the response behavior of a CdS–SnO2 thick film for high selectivity towards propanol gas

Study of the response behavior of a CdS–SnO2 thick film for high selectivity towards propanol gas

Sensing performance of lead monoxide (PbO) doped tin oxide thick film gas sensor

Fano resonance in one-dimensional quasiperiodic topological phononic crystals towards a stable and high-performance sensing tool

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Study of the response behavior of a CdS–SnO₂ thick film for high selectivity towards propanol gas

Study of the response behavior of a CdS–SnO₂ thick film for high selectivity towards propanol gas