A highly selective ammonia gas sensor using surface-ruthenated zinc oxide

Aslam, M.; Chaudhary, Vandna; Mulla, I.S.; Sainkar, S. R.; Mandale, A.B.; Belhekar, A.A.; Vijayamohanan, K.

doi:10.1016/s0924-4247(99)00050-3

Cited by 132 publications

(72 citation statements)

References 23 publications

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“…A comprehensive collection of absorption cross sections for most common atmospheric gases molecules can be accessed from the Max Planck Institute, MPI Mainz UV-VIS database [7]. The data from this database [6] vary from source to source and they depend on [7] and Vaghjiani (1993) [8] are shown in Figure 1.…”

Section: Theorymentioning

confidence: 99%

“…Breathing sensors for halitosis are also reported and developed previously but they are using different technology such as MEMs and MOS sensor which have their own drawbacks as discussed in previous paper [5]. One of the main disadvantages is that they are not selective to single gas detection alone especially when measuring the gas in the presence of water vapor [6]. Therefore a development of a new breathing sensor that is selective to single gas detection is necessary and can be a great alternative to the current existing commercial sensors.…”

Section: Introductionmentioning

confidence: 99%

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Spectra comparison for an optical breathing gas sensor development

Nurulain¹,

Radin²,

Suzalina³

et al. 2017

AIP Conference Proceedings

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Section: Theorymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Spectra comparison for an optical breathing gas sensor development

Nurulain¹,

Radin²,

Suzalina³

et al. 2017

AIP Conference Proceedings

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“…[11][12][13][14][15] Non-linear bistable dynamics model possesses 3 basic elements: a bistabl model, a weak coherent input, and outer stimulation:…”

Section: Non-linear Bistable Dynamics Modelmentioning

confidence: 99%

“…[1][2][3] Many researchers develop novel materials to fabricate ammonia gas sensors. [4][5][6][7][8][9][10][11][12][13] Since the discovery of the catalytic effect of SnO2 in 1962, many studies have been conducted to improve sensor's functions. 14,15 Since proposed by Benzi in 1981 for the earth ice age disciplinarian explanation, 16 bistable dynamic model has been widely applied in fields, such as signal detection, electrical circuits, biological modeling, neural systems, et al [17][18][19][20] It is interesting that, under certain circumstances, an extra dose of noise can actually help the performance of some devices, by eliminating the internal noise in the system.…”

Section: Introductionmentioning

confidence: 99%

Ammonia quantitative analysis model based on miniaturized Al ionization gas sensor and non-linear bistable dynamic model

2015

Bioengineered

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To cite this article: Rongfei Ma (2015) Ammonia quantitative analysis model based on miniaturized Al ionization gas sensor and non-linear bistable dynamic model, Bioengineered, 6:3, 149-152, DOI: 10.1080/21655979.2015 Keywords: ammonia, Al plate sensor, gas sensor, gas ionization, non-linearIn this paper, ammonia quantitative analysis based on miniaturized Al ionization gas sensor and non-linear bistable dynamic model was proposed. Al plate anodic gas-ionization sensor was used to obtain the current-voltage (I-V) data. Measurement data was processed by non-linear bistable dynamics model. Results showed that the proposed method quantitatively determined ammonia concentrations.

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“…Methods for direct gas concentration measurement that are more suitable for miniaturization have been shown, like tin oxide film [8] or conducting polymer-film gas sensors [9]. These methods have been applied to measure ammonia concentrations [10]- [12] but most of them showed poor selectivity and inadequate detection limits and are thus not suited.…”

mentioning

confidence: 99%

Selective low concentration ammonia sensing in a microfluidic lab-on-a-chip

et al. 2006

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Abstract-In the medical community, there is a considerable interest in a diagnostic breath analyzer for ammonia that is selectively enough to measure in exhaled air and small enough for the small volumes available in such an application. An indirect measurement system for low gaseous ammonia concentrations has been miniaturized and integrated on a chip in order to reach this goal. The detection limit of the system was calculated to be 1.1 parts per billion (ppb). The response time was determined to be 1.6 min with a gas flow of 50 ml/min. The required gas volume for one measurement is therefore sufficiently small, although sampling assistance is required for breath analysis. The selectivity of the system is sufficient to measure ammonia concentrations in the low-ppb range. The system is even sufficiently selective to be used in environments that contain elevated carbon dioxide levels, like exhaled air. The lower ammonia concentration expected in diagnostic breath analysis applications, 50 ppb, was demonstrated to be detectable.

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A highly selective ammonia gas sensor using surface-ruthenated zinc oxide

Cited by 132 publications

References 23 publications

Spectra comparison for an optical breathing gas sensor development

Spectra comparison for an optical breathing gas sensor development

Ammonia quantitative analysis model based on miniaturized Al ionization gas sensor and non-linear bistable dynamic model

Selective low concentration ammonia sensing in a microfluidic lab-on-a-chip

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