Engineering approaches to improvement of conductometric gas sensor parameters. Part 2: Decrease of dissipated (consumable) power and improvement stability and reliability

Korotcenkov, Ghenadii; Cho, B.K.

doi:10.1016/j.snb.2014.03.069

Cited by 94 publications

(51 citation statements)

References 252 publications

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“…For the results shown in Fig. 6, a maximum deviation of temperature about 3% was found, meaning a difference of 1.35 • C at 45 • C. Such a deviation is comparable to the uncertainty in the temperature set-point of standard heating elements [1,40].…”

Section: Limitationsmentioning

confidence: 61%

“…Conductometric gas sensors usually operate at high temperatures, typically from 100 • C to 500 • C [1], in order to optimize the sensor signal by tuning the chemical processes occurring at the surface of the active material. To that end, sensors are equipped with external heaters, which are the most energetically demanding component of the device.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Self-heating effects in large arrangements of randomly oriented carbon nanofibers: Application to gas sensors

Monereo¹,

Prades²,

Cirera³

2015

Sensors and Actuators B: Chemical

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a b s t r a c t Herein, we prove that self-heating effects occur in sensor films made of randomly oriented nanoparticles (electro-sprayed, drop-casted and paint-brushed films of carbon nanofibers). A 2-point calibration method, reliable enough to overcome the lack of reproducibility of low cost fabrication methods, is also proposed. Self-heating operation makes possible reaching temperatures up to 250 • C with power consumptions in the range of tens of mW. For certain low-temperature applications (<100 • C) typical power consumptions are as low as tens of W. The method is suitable to modulate the response towards gases, such as humidity, NH 3 or NO 2 . This approach overcomes the complex fabrication requirements of previous self-heating investigations and opens the door to use this effect in cost-effective devices.

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Section: Limitationsmentioning

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Self-heating effects in large arrangements of randomly oriented carbon nanofibers: Application to gas sensors

Monereo¹,

Prades²,

Cirera³

2015

Sensors and Actuators B: Chemical

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“…ZnO, SnO 2 , WO 3 , TiO 2 , In 2 O 3 , etc. besides functional polymers owing to their high sensitivity and fast response [1][2][3][4][5][6]. Major limitations in usage of these metal oxides as gas sensors are their high operating temperature and low selectivity [7,8].…”

Section: Introductionmentioning

confidence: 99%

Rapid synthesis and characterization of hybrid ZnO@Au core–shell nanorods for high performance, low temperature NO 2 gas sensor applications

Ponnuvelu

Pullithadathil

Prasad

et al. 2015

Applied Surface Science

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“…In the following, we report on experiments that had been carried out with the aim of assessing the feasibility of small and inexpensive MOX gas sensors to serve as backend vapor detectors [38,39,40,41,42]. As a first result, we show that combinations of thermal solid-vapor converters with MOX gas sensors are able to detect explosives particle residue (Section 4.1) and illicit drugs (Section 4.2) with sufficient sensitivity to live up to the demands of security threat detection.…”

Section: Metal-oxide-based Security Sensor Systemsmentioning

confidence: 99%

Solid-State Gas Sensors: Sensor System Challenges in the Civil Security Domain

et al. 2016

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The detection of military high explosives and illicit drugs presents problems of paramount importance in the fields of counter terrorism and criminal investigation. Effectively dealing with such threats requires hand-portable, mobile and affordable instruments. The paper shows that solid-state gas sensors can contribute to the development of such instruments provided the sensors are incorporated into integrated sensor systems, which acquire the target substances in the form of particle residue from suspect objects and which process the collected residue through a sequence of particle sampling, solid-vapor conversion, vapor detection and signal treatment steps. Considering sensor systems with metal oxide gas sensors at the backend, it is demonstrated that significant gains in sensitivity, selectivity and speed of response can be attained when the threat substances are sampled in particle as opposed to vapor form.

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Engineering approaches to improvement of conductometric gas sensor parameters. Part 2: Decrease of dissipated (consumable) power and improvement stability and reliability

Cited by 94 publications

References 252 publications

Self-heating effects in large arrangements of randomly oriented carbon nanofibers: Application to gas sensors

Self-heating effects in large arrangements of randomly oriented carbon nanofibers: Application to gas sensors

Rapid synthesis and characterization of hybrid ZnO@Au core–shell nanorods for high performance, low temperature NO 2 gas sensor applications

Solid-State Gas Sensors: Sensor System Challenges in the Civil Security Domain

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