A Survey on Gas Sensing Technology

Liu, Xiao; Cheng, Sitian; Hong, Liu; Hu, Sha; Zhang, Daqiang; Ning, Huansheng

doi:10.3390/s120709635

Cited by 1,241 publications

(741 citation statements)

References 155 publications

(148 reference statements)

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“…Till date, there are numerous reports on the undoped and doped metal oxide semiconducting sensors to sense different gases [9][10][11][12] . There are many reports on NO 2 gas sensors such as, SnO 2 13 , NiO 14 , ZnO [15][16][17] based sensors.…”

Section: Introductionmentioning

confidence: 99%

Effect of RF power on the structural, optical and gas sensing properties of RF-sputtered Al doped ZnO thin films

Srinatha

Kamble³

et al. 2016

RSC Adv.

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The effect of Radio Frequency (RF) power on the properties of magnetron sputtered Al doped ZnO thin films and the related sensor properties are investigated. A series of 2 wt% Al doped ZnO; Zn0.98Al0.02O (AZO) thin films prepared with magnetron sputtering at different RF powers, are examined. The structural results reveal a good adhesive nature of thin films with quartz substrates as well as increasing thickness of the films with raising RF power. Besides, the increasing RF power is found to improve the crystallinity and grains growth as confirmed by X-ray diffraction. On the other hand, the optical transmittance is significantly influenced by the RF power, where the transparency values achieved are higher than 82% for all the AZO thin films and the estimated optical band gap energy is found to decrease with RF power due to an increase in the crystallite size as well as the film thickness. In addition, the defect induced luminescence at low temperature (77 K) and room temperature (300 K) was studied through photoluminescence spectroscopy, it is found that the defect density of electronic states of Al 3+ ion found to increase with increase of RF power due to the increase in the thickness of the film and the crystallite size. The gas sensing behavior of AZO films was studied for NO2 at 350 °C. The AZO film shows good response towards NO2 gas and also a good relationship between the response and the NO2 concentration, which is modeled using an empirical formula. The sensing mechanism of NO2 is discussed.

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Section: Introductionmentioning

confidence: 99%

Effect of RF power on the structural, optical and gas sensing properties of RF-sputtered Al doped ZnO thin films

Srinatha

Kamble³

et al. 2016

RSC Adv.

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“…These cover three working mechanisms (Table IX; Gardner and Bartlett, 1999;Korel and Balaban, 2008;Liu et al, 2012;Schaller et al, 1998). …”

Section: Electronic Nosementioning

confidence: 99%

Food quality and safety monitoring using gas sensor array in intelligent packaging

et al. 2016

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If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.comEmerald is a global publisher linking research and practice to the benefit of society. The company manages a portfolio of more than 290 journals and over 2,350 books and book series volumes, as well as providing an extensive range of online products and additional customer resources and services.Emerald is both COUNTER 4 and TRANSFER compliant. The organization is a partner of the Committee on Publication Ethics (COPE) and also works with Portico and the LOCKSS initiative for digital archive preservation.*Related content and download information correct at time of download. Abstract Purpose -This paper aims to study different possibilities for implementing easy-to-use and cost-effective micro-systems to detect and trace expelled gases from rotten food. The paper covers various radio-frequency identification (RFID) technologies and gas sensors as the two promoting feasibilities for the tracing of packaged food. Monitoring and maintaining quality and safety of food in transport and storage from producer to consumer are the most important concerns in food industry. Many toxin gases, even in parts per billion ranges, are produced from corrupted and rotten food and can endanger the consumers' health. To overcome the issues, intelligent traceability of food products, specifically the packaged ones, in terms of temperature, humidity, atmospheric conditions, etc., has been paid attention to by many researchers. Design/methodology/approach -Food poisoning is a serious problem that affects thousands of people every year. Poisoning food must be recognized early to prevent a serious health problem. Contaminated food is usually detectable by odor. A small gas sensors and low-cost tailored to the type of food packaging and a communication device for transmitting alarm output to the consumer are key factors in achieving intelligent packaging. Findings -Conducting polymer composite, intrinsically conducting polymer and metal oxide conductivity gas sensors, metal-oxide-semiconductor field-effect transistor (MOSFET) gas sensors offer excellent discrimination and lead the way for a new generation of "smart sensors" which will mould the future commercial markets for gas sensors. Originality/value -Small size, low power consumption, short response time, wide operating temperature, high efficiency and small area are most important features of introduced system for using in package food.

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“…For instance, if sensors are separated from controllers or actuators, wireless connections are a cost-effective solution [16]. But low energy consumption will be a strict requisite for sensors [8] in that case. If sensors and controllers or actuators are not separated, connections may be wired or even sensors be integrated with controllers or actuators [3].…”

Section: Introductionmentioning

confidence: 99%

“…Regarding sensing technology, a variety of sensor types have been proposed for gas detection up to now [8], such as electrical/electronic, acoustic, optical spectrographic, and so on. Each type has its own advantages and disadvantages in terms of cost, energy consumption, selectivity, sensitivity, etc.…”

Section: Introductionmentioning

confidence: 99%

Colorimetric detection of hazardous gases using a remotely operated capturing and processing system

et al. 2015

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ElsevierMontes Robles, R.; Moragues Pons, ME.; Vivancos Bono, JL.; Ibáñez Civera, FJ.; Martínez Mañez, R.; Fraile Muñoz, R.; García Breijo, E. (2015). Colorimetric detection of hazardous gases using a remotely operated capturing and processing system. ISA Transactions. 59:434-442. doi:10.1016Transactions. 59:434-442. doi:10. /j.isatra.2015 AbstractThis paper presents an electronic system for the automatic detection of hazardous gases. The proposed system implements colorimetric sensing algorithms, thus providing a low-cost solution to the problem of gas sensing. It is remotely operated and it performs the tasks of image capturing and processing, hence obtaining colour measurements in RGB (Red-Green-Blue) space that are subsequently sent to a remote operator via the internet. A prototype of the system has been built to test its performance. Specifically, experiments have been carried out aimed at the detection of CO, CO 2 , NO, NO 2 , SO 2 and formaldehyde at diverse concentrations by using a chromogenic array composed by 13 active and 2 inert compounds. Statistical analyses of the results reveal a good performance of the electronic system and the feasibility of remote hazardous gas detection using colorimetric sensor arrays.

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A Survey on Gas Sensing Technology

Cited by 1,241 publications

References 155 publications

Effect of RF power on the structural, optical and gas sensing properties of RF-sputtered Al doped ZnO thin films

Effect of RF power on the structural, optical and gas sensing properties of RF-sputtered Al doped ZnO thin films

Food quality and safety monitoring using gas sensor array in intelligent packaging

Colorimetric detection of hazardous gases using a remotely operated capturing and processing system

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