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Journal articles on the topic 'Gas sensors'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

VM, Aroutiounian. "Hydrogen Peroxide Gas Sensors." Physical Science & Biophysics Journal 5, no. 2 (2021): 1–22. http://dx.doi.org/10.23880/psbj-16000194.

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The results of studies of many types of semiconductor H 2 O 2 sensors are discussed in this review of 195 articles about hydrogen peroxide. The properties of electrochemical detectors, sensors based on organic and inorganic materials, graphene, and nano-sensors are analyzed. Optical and fluorescent sensors, detectors made of porous materials, quantum dots, fibers, and spheres are briefly discussed. The results of our studies in the YSU of hydrogen peroxide sensors made from solid solutions of carbon nanotubes with semiconducting metal oxides are also presented in the review. The fundamentals o

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Stetter, Joseph R., and Tamara Russ. "(Invited) Past, Present and Future for Electrochemical Gas Sensors in Energy Applications." ECS Meeting Abstracts MA2024-01, no. 51 (2024): 2750. http://dx.doi.org/10.1149/ma2024-01512750mtgabs.

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The markets for modern low-cost electrochemical gas sensors have been growing for longer than sensors have been around. Energy markets for gas sensors include the oil, gas and electricity industries as well as the new developing and fast growing green energy sectors. The primary gases to detect include combustible hydrocarbons, oxygen, and toxic gases. Specifically, we are interested in methane (blue and green), ammonia, and H2 for the renewable energy sectors but include hydrocarbon fuels and CO2 as a greenhouse gas emission. The reasons for monitoring crosscut all areas of the energy busines

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Ando, Masanori, Hideya Kawasaki, Satoru Tamura, Yoshikazu Haramoto, and Yasushi Shigeri. "Recent Advances in Gas Sensing Technology Using Non-Oxide II-VI Semiconductors CdS, CdSe, and CdTe." Chemosensors 10, no. 11 (2022): 482. http://dx.doi.org/10.3390/chemosensors10110482.

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In recent years, there has been an increasing need and demand for gas sensors to detect hazardous gases in the atmosphere, as they are indispensable for environmental monitoring. Typical hazardous gas sensors that have been widely put to practical use include conductometric gas sensors, such as semiconductor gas sensors that use the change in electrical resistance of metal oxide semiconductors, catalytic combustion gas sensors, and electrochemical gas sensors. However, there is a growing demand for gas sensors that perform better and more safely, while also being smaller, lighter, less energy-

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Guo, Tao, Tianhao Zhou, Qiulin Tan, Qianqian Guo, Fengxiang Lu, and Jijun Xiong. "A Room-Temperature CNT/Fe3O4 Based Passive Wireless Gas Sensor." Sensors 18, no. 10 (2018): 3542. http://dx.doi.org/10.3390/s18103542.

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A carbon nanotube/Fe3O4 thin film-based wireless passive gas sensor with better performance is proposed. The sensitive test mechanism of LC (Inductance and capacitance resonant) wireless sensors is analyzed and the reason for choosing Fe3O4 as a gas sensing material is explained. The design and fabrication process of the sensor and the testing method are introduced. Experimental results reveal that the proposed carbon nanotube (CNT)/Fe3O4 based sensor performs well on sensing ammonia (NH3) at room temperature. The sensor exhibits not only an excellent response, good selectivity, and fast respo

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Su, Kuo Lan, Sheng Wen Shiau, Yi Lin Liao, and J. H. Guo. "Bayesian Estimation Algorithm Applying in Gas Detection Modules." Applied Mechanics and Materials 284-287 (January 2013): 1764–69. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.1764.

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The paper develops gas detection modules for the intelligent building. The modules use many gas sensors to detect environment of the home and building. The gas sensors of the detection modules are classified two types. One is competitiveness gas detection module, and uses the same sensors to detect gas leakage. The other is complementation gas detection module, and uses variety sensors to classify multiple gases. The paper uses Bayesian estimation algorithm to be applied in competitiveness gas detection module and complementation gas detection module, and implement the proposed algorithm to be

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Hadi, Amran Abdul, Nurulain Nadhirah Shaipuzaman, Mohd Amir Shahlan Mohd Aspar, Mohd Rashidi Salim, and Hadi Manap. "Advancements in ammonia gas detection: a comparative study of sensor technologies." International Journal of Electrical and Computer Engineering (IJECE) 14, no. 5 (2024): 5107. http://dx.doi.org/10.11591/ijece.v14i5.pp5107-5116.

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Ammonia gas is a colorless gas that is known for its pungent odor. It is commonly used in various industries, such as agriculture, refrigeration, and chemical manufacturing. This paper provides a comprehensive overview of various technologies employed in ammonia gas sensors. The objective is to compare and identify the optimum method to detect ammonia gas. The review encompasses catalytic gas sensors, metal oxide gas sensors, polymer conductivity gas sensors, optical gas sensors, and indirect gas sensors, detailing their respective operational principles. Additionally, the advantages and disad

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Rahbarpour, S., S. Sajed, and H. Ghafoorifard. "Temperature Dependence of Responses in Metal Oxide Gas Sensors." Key Engineering Materials 644 (May 2015): 181–84. http://dx.doi.org/10.4028/www.scientific.net/kem.644.181.

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Selecting an optimum operating temperature for metal oxide gas sensors is of prime technical importance. Here, the temperature behavior of various kinds of metal oxide gas sensors in response to different levels of reducing contaminants in air is reported. The examined gas sensor samples include a Tin oxide-based resistive gas sensor and home-made diode-type Ag-TiO2-Ti gas sensors. Recorded response vs. temperature curves of all samples represent two different typical features: The responses related to the resistive gas sensor exhibit distinct maximum response at a well defined operating tempe

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Abdullah, Abdulnasser Nabil, Kamarulzaman Kamarudin, Latifah Munirah Kamarudin, et al. "Correction Model for Metal Oxide Sensor Drift Caused by Ambient Temperature and Humidity." Sensors 22, no. 9 (2022): 3301. http://dx.doi.org/10.3390/s22093301.

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For decades, Metal oxide (MOX) gas sensors have been commercially available and used in various applications such as the Smart City, gas monitoring, and safety due to advantages such as high sensitivity, a high detection range, fast reaction time, and cost-effectiveness. However, several factors affect the sensing ability of MOX gas sensors. This article presents the results of a study on the cross-sensitivity of MOX gas sensors toward ambient temperature and humidity. A gas sensor array consisting of temperature and humidity sensors and four different MOX gas sensors (MiCS-5524, GM-402B, GM-5

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Kozubovskiy, V. R. "Sensors for fire gas detectors." Semiconductor Physics Quantum Electronics and Optoelectronics 14, no. 3 (2011): 330–33. http://dx.doi.org/10.15407/spqeo14.03.330.

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Mukhtarov, Farrukh, Nurmaxamad Jo'rayev, Sanjar Zokirov, Munira Sadikova, Azamatjon Muhammadjonov, and Nargizakhon Iskandarova. "Analysis of automation through sensors through gas sensors in different directions." E3S Web of Conferences 508 (2024): 06004. http://dx.doi.org/10.1051/e3sconf/202450806004.

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The MQ2 and MQ4 sensors are highly popular gas sensors utilized in a wide range of applications for the detection and measurement of various gases. Renowned for their simplicity, affordability, and ease of use, MQ sensors have become a preferred choice among hobbyists, students, and professionals. In this article, we will delve into a comprehensive comparison between these two types of gas sensors, aiming to unveil the desired outcomes. In conclusion, the MQ2 and MQ4 sensors are widely recognized for their simplicity, affordability, and ease of use in detecting and measuring various gases. Whi

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Sui, Ran, Erpan Zhang, Xiaoshui Tang, Wenjun Yan, Yun Liu, and Houpan Zhou. "Thermal Modulation of Resistance Gas Sensor Facilitates Recognition of Fragrance Odors." Chemosensors 12, no. 6 (2024): 101. http://dx.doi.org/10.3390/chemosensors12060101.

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Herein, we prepared two different MOS-based gas sensors with integrated micro-hotplates. The two sensors were employed to detect various fragrances (cedar, mandarin orange, rose A, and rose B), exhibiting similarly great sensing performances. The gas sensing properties of the MOS-based sensor depend on the sensor’s operating temperature. In addition to isothermal operation, various pulse heating modes were applied to investigate the gas sensing performances with respect to the four fragrances. Multivariate gas sensing features of the four fragrances were obtained under different operating mode

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Honeycutt, Wesley T., M. Tyler Ley, and Nicholas F. Materer. "Precision and Limits of Detection for Selected Commercially Available, Low-Cost Carbon Dioxide and Methane Gas Sensors." Sensors 19, no. 14 (2019): 3157. http://dx.doi.org/10.3390/s19143157.

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The performance of a sensor platform for environmental or industrial monitoring is sensitive to the cost and performance of the individual sensor elements. Thus, the detection limits, accuracy, and precision of commercially available, low-cost carbon dioxide and methane gas concentration sensors were evaluated by precise measurements at known gas concentrations. Sensors were selected based on market availability, cost, power consumption, detection range, and accuracy. A specially constructed gas mixing chamber, coupled to a precision bench-top analyzer, was used to characterize each sensor dur

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Kotarski, Mateusz, and Janusz Smulko. "Fluctuation Enhanced Gas Sensing at Modulated Temperature of Gas Sensor." International Journal of Measurement Technologies and Instrumentation Engineering 2, no. 2 (2012): 41–52. http://dx.doi.org/10.4018/ijmtie.2012040104.

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Taguchi gas sensors are commonly used to measure gas concentration. The standard detection method utilizes only changes of sensor DC resistance to determine various gases concentration. Unfortunately, such technique leads to false results due to cross-sensitivity of gas sensors at presence of other gases. Such adverse effects can be reduced by applying fluctuation enhanced sensing and temperature modulation of the sensor what allows to gather more information about ambient atmosphere than the sensor DC resistance only. The measurement setup of voltage fluctuations across the gas sensor as well

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Korotcenkov, Ghenadii. "Electrospun Metal Oxide Nanofibers and Their Сonductometric Gas Sensor Application. Part 2: Gas Sensors and Their Advantages and Limitations". Nanomaterials 11, № 6 (2021): 1555. http://dx.doi.org/10.3390/nano11061555.

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Electrospun metal oxide nanofibers, due to their unique structural and electrical properties, are now being considered as materials with great potential for gas sensor applications. This critical review attempts to assess the feasibility of these perspectives. This article discusses approaches to the manufacture of nanofiber-based gas sensors, as well as the results of analysis of the performances of these sensors. A detailed analysis of the disadvantages that can limit the use of electrospinning technology in the development of gas sensors is also presented in this article. It also proposes s

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Yang, Taicong, Fengchun Tian, James A. Covington, et al. "Resistance-Capacitance Gas Sensor Based on Fractal Geometry." Chemosensors 7, no. 3 (2019): 31. http://dx.doi.org/10.3390/chemosensors7030031.

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An important component of any chemiresistive gas sensor is the way in which the resistance of the sensing film is interrogated. The geometrical structure of an electrode can enhance the performance of a gas-sensing device and in particular the performance of sensing films with large surface areas, such as carbon nanotubes. In this study, we investigated the influence of geometrical structure on the performance of gas sensors, combining the characteristics of carbon nanotubes with a novel gas sensor electrode structure based on fractal geometry. The fabricated sensors were tested with exposure

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Ming, An Jie, Yao Hui Ren, Yu Zhang, et al. "A Compact Infrared Gas Sensor Based on an Asymmetry Gas Cavity." Key Engineering Materials 645-646 (May 2015): 1111–14. http://dx.doi.org/10.4028/www.scientific.net/kem.645-646.1111.

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Many gas molecules absorb electromagnetic radiation at characteristic wavelengths in the infrared region. This absorption can be used to identify defined substances like CO2, ammoniac, and so far. This study presents a comparative analysis of parameters of infrared radiation source and detector hardware that are most important for the creation of portable optical nondispersive infrared (NDIR) gas sensors. One of the central issues in the design of this kind of sensors is the geometry of the sensor cell. In this paper we investigate an asymmetry sensor cavity and predict the performance using T

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Dougami, Naganori, Takeshi Miyata, Taishi Orita, et al. "Hot-wire-type micromachined chemiresistive gas sensors for battery-powered city gas alarms." Japanese Journal of Applied Physics 64, no. 1 (2025): 01SP13. https://doi.org/10.35848/1347-4065/ada29c.

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Abstract Metal oxide semiconductor (MOX) chemiresistive gas sensors used in gas alarms have contributed to the safe use of city gas and liquid petroleum gas. In this study, we successfully fabricated hot-wire-type MOX sensors using micro-electro-mechanical systems (MEMS) technology. The hot-wire type structure, in which an electrode plays dual roles in detecting and heating, was adopted for efficient production. Owing to the miniaturization together with the thermal insulation, the sensors exhibited a fast thermal response. The average power consumption of the sensor in the pulsed operation wa

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Suyog, Surendra Mankar. "Low-Power Gas Sensors: Advances, Challenges, and Future Prospect." International Journal of Advance and Applied Research S6, no. 18 (2025): 796–99. https://doi.org/10.5281/zenodo.15266644.

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  <em>‘Gas sensor is a device that primarily used to detect the presence of specific gases and concentration of gases across an area.’<strong> </strong></em><em>Gas sensors play important roles in various sectors, which include industry,</em><em> safety systems,</em><em> medical and health care applications, </em><em>environmental applications, and domestic applications for monitoring toxic and flammable gases. </em><em>The power supply in gas sensors is essential for their operation, as it enables the detection and measurement of target gases. The specific need for a power su

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Kim, Sohyeon, Ju-Eun Yang, Yoon-Seo Park, Minwoo Park, Sang-Jo Kim, and Kyoung-Kook Kim. "Convergence Gas Sensors with One-Dimensional Nanotubes and Pt Nanoparticles Based on Ultraviolet Photonic Energy for Room-Temperature NO2 Gas Sensing." Nanomaterials 13, no. 20 (2023): 2780. http://dx.doi.org/10.3390/nano13202780.

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Zinc oxide (ZnO) is a promising material for nitrogen dioxide (NO2) gas sensors because of its nontoxicity, low cost, and small size. We fabricated one-dimensional (1D) and zero-dimensional (0D) convergence gas sensors activated via ultraviolet (UV) photonic energy to sense NO2 gas at room temperature. One-dimensional ZnO nanorod (ZNR)-based and ZnO nanotube (ZNT)-based gas sensors were synthesized using a simple hydrothermal method. All the sensors were tested under UV irradiation (365 nm) so that they could be operated at room temperature rather than a high temperature. In addition, we decor

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Ryu, Jongwon, Seob Shim, Jeongin Song, et al. "Effect of Measurement System Configuration and Operating Conditions on 2D Material-Based Gas Sensor Sensitivity." Nanomaterials 13, no. 3 (2023): 573. http://dx.doi.org/10.3390/nano13030573.

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Gas sensors applied in real-time detection of toxic gas leakage, air pollution, and respiration patterns require a reliable test platform to evaluate their characteristics, such as sensitivity and detection limits. However, securing reliable characteristics of a gas sensor is difficult, owing to the structural difference between the gas sensor measurement platform and the difference in measurement methods. This study investigates the effect of measurement conditions and system configurations on the sensitivity of two-dimensional (2D) material-based gas sensors. Herein, we developed a testbed t

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Nazemi, Haleh, Aashish Joseph, Jaewoo Park, and Arezoo Emadi. "Advanced Micro- and Nano-Gas Sensor Technology: A Review." Sensors 19, no. 6 (2019): 1285. http://dx.doi.org/10.3390/s19061285.

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Micro- and nano-sensors lie at the heart of critical innovation in fields ranging from medical to environmental sciences. In recent years, there has been a significant improvement in sensor design along with the advances in micro- and nano-fabrication technology and the use of newly designed materials, leading to the development of high-performance gas sensors. Advanced micro- and nano-fabrication technology enables miniaturization of these sensors into micro-sized gas sensor arrays while maintaining the sensing performance. These capabilities facilitate the development of miniaturized integra

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Immanuel, Phillip Nathaniel, Song-Jeng Huang, Yudhistira Adityawardhana, and Yi-Kuang Yen. "A Review of Paper-Based Sensors for Gas, Ion, and Biological Detection." Coatings 13, no. 8 (2023): 1326. http://dx.doi.org/10.3390/coatings13081326.

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Gas, ion, and biological sensors have been widely utilized to detect analytes of great significance to the environment, food, and health. Paper-based sensors, which can be constructed on a low-cost paper substrate through a simple and cost-effective fabrication process, have attracted much interests for development. Moreover, many materials can be employed in designing sensors, such as metal oxides and/or inorganic materials, carbon-based nanomaterials, conductive polymers, and composite materials. Most of these provide a large surface area and pitted structure, along with extraordinary electr

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Xu, Hong Yan, Teng Teng Wu, Wen Ru Li, et al. "Low-Working-Temperature and High-NO₂-Sensing Properties of SnO₂/PANI Hybrid Material Sensors." Key Engineering Materials 727 (January 2017): 503–7. http://dx.doi.org/10.4028/www.scientific.net/kem.727.503.

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In this work, SnO2 porous nanosolids were obtained from SnO2 nanopowders by using a solvo-thermal hot-press method. Then, by using the conventional thick-film sensors preparation technology, SnO2 porous thick-film gas sensor was prepared from it. Meanwhile, polyaniline (PANI) was synthesized by chemical oxidation polymerization. After that, by mechanical method, the SnO2/PANI composite gas sensors were fabricated. The intrinsic resistances and gas sensing properties of sensors to NO2, NH3, H2 and ethanol vapor were tested. Compared with the SnO2 porous gas sensors, the optimum operation temper

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Sensors, Gas. "Gas sensors." Hyomen Kagaku 10, no. 11 (1989): 925–32. http://dx.doi.org/10.1380/jsssj.10.925.

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Kocache, Ray. "Gas sensors." Sensor Review 14, no. 1 (1994): 8–12. http://dx.doi.org/10.1108/eum0000000004256.

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Yamazoe, Noboru. "Gas Sensors." IEEJ Transactions on Sensors and Micromachines 115, no. 1 (1995): 30–33. http://dx.doi.org/10.1541/ieejsmas.115.30.

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Kudo, Tetsuichi. "Gas sensors." Catalysis Today 8, no. 2 (1990): 263–74. http://dx.doi.org/10.1016/0920-5861(90)87022-u.

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Baur, Tobias, Manuel Bastuck, Caroline Schultealbert, Tilman Sauerwald, and Andreas Schütze. "Random gas mixtures for efficient gas sensor calibration." Journal of Sensors and Sensor Systems 9, no. 2 (2020): 411–24. http://dx.doi.org/10.5194/jsss-9-411-2020.

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Abstract. Applications like air quality, fire detection and detection of explosives require selective and quantitative measurements in an ever-changing background of interfering gases. One main issue hindering the successful implementation of gas sensors in real-world applications is the lack of appropriate calibration procedures for advanced gas sensor systems. This article presents a calibration scheme for gas sensors based on statistically distributed gas profiles with unique randomized gas mixtures. This enables a more realistic gas sensor calibration including masking effects and other ga

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Ma, Minzhen, Xinting Yang, Xiaoguo Ying, Ce Shi, Zhixin Jia, and Boce Jia. "Applications of Gas Sensing in Food Quality Detection: A Review." Foods 12, no. 21 (2023): 3966. http://dx.doi.org/10.3390/foods12213966.

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Food products often face the risk of spoilage during processing, storage, and transportation, necessitating the use of rapid and effective technologies for quality assessment. In recent years, gas sensors have gained prominence for their ability to swiftly and sensitively detect gases, making them valuable tools for food quality evaluation. The various gas sensor types, such as metal oxide (MOX), metal oxide semiconductor (MOS) gas sensors, surface acoustic wave (SAW) sensors, colorimetric sensors, and electrochemical sensors, each offer distinct advantages. They hold significant potential for

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Bondar, O. G., E. O. Brezhneva, O. G. Dobroserdov, K. G. Andreev, and N. V. Polyakov. "Synthesis and Parameterization of Gas Sensor Models." Proceedings of the Southwest State University 25, no. 1 (2021): 138–61. http://dx.doi.org/10.21869/2223-1560-2021-25-1-138-161.

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Purpose of research: search and analysis of existing models of gas-sensitive sensors. Development of mathematical models of gas-sensitive sensors of various types (semiconductor, thermocatalytic, optical, electrochemical) for their subsequent use in the training of artificial neural networks (INS). Investigation of main physicochemical patterns underlying the principles of sensor operation, consideration of the influence of environmental factors and cross-sensitivity on the sensor output signal. Comparison of simulation results with actual characteristics produced by the sensor industry. The c

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Tang, Xiaohui, Marc Debliquy, Driss Lahem, Yiyi Yan, and Jean-Pierre Raskin. "A Review on Functionalized Graphene Sensors for Detection of Ammonia." Sensors 21, no. 4 (2021): 1443. http://dx.doi.org/10.3390/s21041443.

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Since the first graphene gas sensor has been reported, functionalized graphene gas sensors have already attracted a lot of research interest due to their potential for high sensitivity, great selectivity, and fast detection of various gases. In this paper, we summarize the recent development and progression of functionalized graphene sensors for ammonia (NH3) detection at room temperature. We review graphene gas sensors functionalized by different materials, including metallic nanoparticles, metal oxides, organic molecules, and conducting polymers. The various sensing mechanism of functionaliz

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Choi, Hee-Jung, Soon-Hwan Kwon, Won-Seok Lee, et al. "Ultraviolet Photoactivated Room Temperature NO2 Gas Sensor of ZnO Hemitubes and Nanotubes Covered with TiO2 Nanoparticles." Nanomaterials 10, no. 3 (2020): 462. http://dx.doi.org/10.3390/nano10030462.

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Prolonged exposure to NO2 can cause lung tissue inflammation, bronchiolitis fibrosa obliterans, and silo filler’s disease. In recent years, nanostructured semiconducting metal oxides have been widely used to fabricate gas sensors because of their unique structure and surface-to-volume ratio compared to layered materials. In particular, the different morphologies of ZnO-based nanostructures significantly affect the detection property of NO2 gas sensors. However, because of the large interaction energy of chemisorption (1–10 eV), metal oxide-based gas sensors are typically operated above 100 °C,

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Maslennikov, Aleksandr, Ilya Zubkov, and S. Kovalenko. "Optical chemical sensor for solving gas analysis tasks." MATEC Web of Conferences 212 (2018): 01029. http://dx.doi.org/10.1051/matecconf/201821201029.

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A brief review of the principles of constructing optical gas-analyzing sensors is presented. It is noted that the influence of humidity of the surrounding gas environment during gas analytical procedures using solid-state gas analytical sensors is a serious technological problem. It is shown that sensors of particular interest are functioning on the principle of absorption of the primary light flux because of their reduced sensitivity to fluctuations in the humidity of the carrier gas. The design and the gas analytical properties of an optical chemical sensor are described. Ammonia was used as

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Luo, Jianghua, Yishan Jiang, Feng Xiao, Xin Zhao, and Zheng Xie. "Highly Sensitive p + n Metal Oxide Sensor Array for Low-Concentration Gas Detection." Sensors 18, no. 8 (2018): 2710. http://dx.doi.org/10.3390/s18082710.

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Nowadays, despite the easy fabrication and low cost of metal oxide gas sensors, it is still challenging for them to detect gases at low concentrations. In this study, resistance-matched p-type Cu2O and n-type Ga-doped ZnO, as well as p-type CdO/LaFeO3 and n-type CdO/Sn-doped ZnO sensors were prepared and integrated into p + n sensor arrays to enhance their gas-sensing performance. The materials were characterized by scanning electron microscopy, transmittance electron microscopy, and X-ray diffractometry, and gas-sensing properties were measured using ethanol and acetone as probes. The results

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Potyrailo, Radislav A., Brian Scherer, Baokai Cheng, et al. "First-Order Individual Gas Sensors as Next Generation Reliable Analytical Instruments." Applied Spectroscopy 77, no. 8 (2023): 860–72. http://dx.doi.org/10.1177/00037028231186821.

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It is conventionally expected that the performance of existing gas sensors may degrade in the field compared to laboratory conditions because (i) a sensor may lose its accuracy in the presence of chemical interferences and (ii) variations of ambient conditions over time may induce sensor-response fluctuations (i.e., drift). Breaking this status quo in poor sensor performance requires understanding the origins of design principles of existing sensors and bringing new principles to sensor designs. Existing gas sensors are single-output (e.g., resistance, electrical current, light intensity, etc.

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Qin, Song, Lu Qu, Dong Wei, Bao Cai Zhang, and Nan Wan Qiu. "Research and Practice of New Gas Sensors Based Materials on Internet of Things." Advanced Materials Research 301-303 (July 2011): 497–502. http://dx.doi.org/10.4028/www.scientific.net/amr.301-303.497.

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The development of Internet of Things has led to a sharp rise in demand for sensors. Users require that sensors can collect information from the Internet of Things in a timely and accurate way. In response to the present situation that there are only a few varieties of gas components-based materials in the application of Internet of Things. According to the new viewpoint that energy gap Eg> 2ev materials are likely to be used to develop thin film gas sensors, we have succeeded in preparing quality thin film gas sensors Fe2O3/2%CeO2and TiO2/2%CeO2by using the method of powder sputtering. Bas

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Huang, Bo, Yanqiong Li, and Wen Zeng. "Application of Metal-Organic Framework-Based Composites for Gas Sensing and Effects of Synthesis Strategies on Gas-Sensitive Performance." Chemosensors 9, no. 8 (2021): 226. http://dx.doi.org/10.3390/chemosensors9080226.

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Gas sensing materials, such as semiconducting metal oxides (SMOx), carbon-based materials, and polymers have been studied in recent years. Among of them, SMOx-based gas sensors have higher operating temperatures; sensors crafted from carbon-based materials have poor selectivity for gases and longer response times; and polymer gas sensors have poor stability and selectivity, so it is necessary to develop high-performance gas sensors. As a porous material constructed from inorganic nodes and multidentate organic bridging linkers, the metal-organic framework (MOF) shows viable applications in gas

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Hsiao, Chun Ching, and Li Siang Luo. "Gas Sensors Fabricated by Aerosol Deposition." Applied Mechanics and Materials 541-542 (March 2014): 151–54. http://dx.doi.org/10.4028/www.scientific.net/amm.541-542.151.

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Zinc oxide (ZnO) is a low toxicity and environmentally friendly material, and it is applied on devices, sensors or actuators for trending towards green-life. A porous ZnO film deposited by a rapid process of aerosol deposition (AD) was employed as the gas-sensitive material in a CO gas sensor for reducing the manufacturing cost and time, further extending the AD application. A relative resistance change (??R / R) of the ZnO gas sensor was used for CO gas measurement. The sensitivity of the fabricated ZnO gas sensors had a more outstanding performance about 49%, compared to the literature data

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Cao, Rongtao, Jingyu Wu, Yang Yang, Mohan Wang, Yuqi Li, and Kevin P. Chen. "A High-Temperature Multipoint Hydrogen Sensor Using an Intrinsic Fabry–Perot Interferometer in Optical Fiber." Photonics 10, no. 3 (2023): 284. http://dx.doi.org/10.3390/photonics10030284.

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This paper presents a multiplexable fiber optic chemical sensor with the capability of monitoring hydrogen gas concentration at high temperatures up to 750 °C. The Pd-nanoparticle infused TiO2 films coated on intrinsic Fabry–Perot interferometer (IFPI) array were used as sensory films. Strains induced upon exposure to hydrogen with varied concentrations can be monitored by IFPI sensors. The fiber sensor shows a repetitive and reversible response when exposed to a low level (1–6%) of hydrogen gas. Uniform sensory behavior across all the sensing cavities is demonstrated and reported in this pape

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Cämmerer, Malcolm, Thomas Mayer, Stefanie Penzel, Mathias Rudolph, and Helko Borsdorf. "Application of Low-Cost Electrochemical Sensors to Aqueous Systems to Allow Automated Determination of NH3 and H2S in Water." Sensors 20, no. 10 (2020): 2814. http://dx.doi.org/10.3390/s20102814.

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Usage of commercially available electrochemical gas sensors is currently limited by both the working range of the sensor with respect to temperature and humidity and the spikes in sensor response caused by sudden changes in temperature or humidity. Using a thermostatically controlled chamber, the sensor response of ammonia and hydrogen sulfide sensors was studied under extreme, rapidly changing levels of humidity with the aim of analyzing nebulized water samples. To protect the sensors from damage, the gas stream was alternated between a saturated gas stream from a Flow Blurring® nebulizer and

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Ahmad, Ibtisam, Mohsin Ali, and Hee-Dong Kim. "Role of en-APTAS Membranes in Enhancing the NO2 Gas-Sensing Characteristics of Carbon Nanotube/ZnO-Based Memristor Gas Sensors." Biosensors 14, no. 12 (2024): 635. https://doi.org/10.3390/bios14120635.

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NO2 is a toxic gas that can damage the lungs with prolonged exposure and contribute to health conditions, such as asthma in children. Detecting NO2 is therefore crucial for maintaining a healthy environment. Carbon nanotubes (CNTs) are promising materials for NO2 gas sensors due to their excellent electronic properties and high adsorption energy for NO2 molecules. However, conventional CNT-based sensors face challenges, including low responses at room temperature (RT) and slow recovery times. This study introduces a memristor-based NO2 gas sensor comprising CNT/ZnO/ITO decorated with an N-[3-(

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Xu, Hong Yan, Xing Qiao Chen, Ling Zhan Fang, and Bing Qiang Cao. "Preparation and Characterization of Cerium-Doped Tin Oxide Gas Sensors." Advanced Materials Research 306-307 (August 2011): 1450–55. http://dx.doi.org/10.4028/www.scientific.net/amr.306-307.1450.

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In this paper, the precursors were synthesized by microwave hydrothermal method using SnCl4•5H2O and Ce(NO3)3·6H2O as raw material, CO(NH2)2 as precipitants, respectively. Pure SnO2 nanoparticles and cerium-doped SnO2 nanoparticles were obtained. Furthermore, five kinds of SnO2 thick film gas sensors were fabricated from the above SnO2 nanoparticles (the sensors denoted as sensor SC0, SC2, SC3, SC4 and SC6, respectively). The experiment results showed that, compared with pure SnO2 thick film gas sensor, the intrinsic resistance of cerium-doped SnO2 thick film gas sensors decreased, and their s

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Yadav, Anshul, and Niraj Sinha. "Nanomaterial-based gas sensors: A review on experimental and theoretical studies." Materials Express 12, no. 1 (2022): 1–33. http://dx.doi.org/10.1166/mex.2022.2121.

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Gas sensors play an essential role in various fields such as public safety, environmental monitoring, medical engineering, food monitoring, pharmaceutical industries and clinical diagnostic, to name a few. The need for miniaturized sensors possessing high sensitivity, time response, selectivity, reproducibility, durability, and low cost has driven the discovery of nanomaterials-based gas sensing devices due to their inherent properties such as chemical/physical gas adsorption capabilities and high surface-to-volume ratio. Studies in the literature highlight the development of gas sensors using

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Lee, Jae-Hyoung, Thanh-Binh Nguyen, Duy-Khoi Nguyen, et al. "Gas Sensing Properties of Mg-Incorporated Metal–Organic Frameworks." Sensors 19, no. 15 (2019): 3323. http://dx.doi.org/10.3390/s19153323.

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The gas sensing properties of two novel series of Mg-incorporated metal–organic frameworks (MOFs), termed Mg-MOFs-I and -II, were assessed. The synthesized iso-reticular type Mg-MOFs exhibited good crystallinity, high thermal stability, needle-shape morphology and high surface area (up to 2900 m2·g−1), which are promising for gas sensing applications. Gas-sensing studies of gas sensors fabricated from Mg-MOFs-II revealed better sensing performance, in terms of the sensor dynamics and sensor response, at an optimal operating temperature of 200 °C. The MOF gas sensor with a larger pore size and

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Qin, Song, Bao Cai Zhang, Dong Wei, Lu Qu, and Nan Wan Qiu. "Research and Development of Thin Film Gas Sensor and its GPRS Wireless Sensor Based on Internet of Things." Advanced Materials Research 301-303 (July 2011): 503–8. http://dx.doi.org/10.4028/www.scientific.net/amr.301-303.503.

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Wireless sensor network is a new area of research in the computer science and technology. In response to the demand for a variety of network sensors, this paper describes thin film gas sensors and wireless sensor development, puts forword the manu facturing technology of producing thin film gas sensor with reactive powder doped sputtering method, discusses properties related to gas sensing.and power consumption. And introduces how thin film gas sensor chip and its related GPRS wireless sensor in order to lay the foundation for their application in Internet of Things.

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Quelennec, Aurore, Éric Duchesne, Hélène Frémont, and Dominique Drouin. "Source Separation Using Sensor’s Frequency Response: Theory and Practice on Carbon Nanotubes Sensors." Sensors 19, no. 15 (2019): 3389. http://dx.doi.org/10.3390/s19153389.

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Nowadays, there is an increased demand in integrated sensors for electronic devices. Multi-functional sensors provide the same amount of data using fewer sensors. Carbon nanotubes are non-selectively sensitive to temperature, gas and strain. Thus, carbon nanotubes are perfect candidates to design multi-functional sensors. In our study, we are interested in a dual humidity-temperature sensor. Here, we present a novel method to differentiate at least two sources using the sensor’s frequency responses based on multiwall carbon nanotubes sensors. The experimental results demonstrate that there are

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Chen, Xiaohu, Ryan Wreyford, and Noushin Nasiri. "Recent Advances in Ethylene Gas Detection." Materials 15, no. 17 (2022): 5813. http://dx.doi.org/10.3390/ma15175813.

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The real-time detecting and monitoring of ethylene gas molecules could benefit the agricultural, horticultural and healthcare industries. In this regard, we comprehensively review the current state-of-the-art ethylene gas sensors and detecting technologies, covering from preconcentrator-equipped gas chromatographic systems, Fourier transform infrared technology, photonic crystal fiber-enhanced Raman spectroscopy, surface acoustic wave and photoacoustic sensors, printable optically colorimetric sensor arrays to a wide range of nanostructured chemiresistive gas sensors (including the potentiomet

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Nam, Yoonmi, Heesu Hwang, Dohyoung Kim, et al. "Application of Unsupervised/Supervised Machine Learning to Harmful Gas Detection/Classification Based on Mutually-Interacting Semiconductor Metal Oxide Gas Sensors." ECS Meeting Abstracts MA2023-01, no. 52 (2023): 2608. http://dx.doi.org/10.1149/ma2023-01522608mtgabs.

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Chemical and/or physical sensors are employed at domestic and industrial sites with the aim to perform a variety of functions, such as prediction, forecasting, prognostics, remaining useful life estimation, anomaly detection, and trend analysis. The sensing information contain the analog signals originating from gas-generated signals, pressure, shear, strain, torsion, temperature, humidity, illumination, electromagnetic radiation, sound, and vibration. Chemical gas sensors can be categorized mainly as semiconductor metal oxide (SMO), electrochemical, or photo-ionization detection (PID) sensors

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Tseng, Tseung Yuen. "ZnO Nanostructures for Sensor Applications." Solid State Phenomena 185 (February 2012): 1–4. http://dx.doi.org/10.4028/www.scientific.net/ssp.185.1.

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The wide-gap semiconductor ZnO with nanostructures such as nanoparticles, nanorods, nanowires has high potential for a variety of sensor applications. This paper reviews the recent developments of ZnO one dimentional nanostructures for future gas sensor applications. Presented first is the factors contributing to the high performances of gas sensors using such nanostructures. Then various fabrication methods of the ZnO nanostructures including vapor phase growth, solution growth, and template-assisted growth are introduced. The characterization and properties of the ZnO nanostructures-based ga

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Dmitrzak, Marta, Pawel Kalinowski, Piotr Jasinski, and Grzegorz Jasinski. "Identification of defected sensors in an array of amperometric gas sensors." Sensor Review 42, no. 2 (2021): 195–203. http://dx.doi.org/10.1108/sr-10-2021-0348.

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Purpose Amperometric gas sensors are commonly used in air quality monitoring in long-term measurements. Baseline shift of sensor responses and power failure may occur over time, which is an obstacle for reliable operation of the entire system. The purpose of this study is to check the possibility of using PCA method to detect defected samples, identify faulty sensor and correct the responses of the sensor identified as faulty. Design/methodology/approach In this work, the authors present the results obtained with six amperometric sensors. An array of sensors was exposed to sulfur dioxide at th

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