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Artykuły w czasopismach na temat „Oxygen Gas Sensors”

Autor: Grafiati

Data publikacji: 7 września 2023

Data aktualizacji: 31 lipca 2025

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1

Sembodo, Shafanda Nabil, Nazrul Effendy, Kenny Dwiantoro, and Nidlom Muddin. "Radial basis network estimator of oxygen content in the flue gas of debutanizer reboiler." International Journal of Electrical and Computer Engineering (IJECE) 12, no. 3 (2022): 3044. http://dx.doi.org/10.11591/ijece.v12i3.pp3044-3050.

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<span>The energy efficiency in the debutanizer reboiler combustion can be monitored from the oxygen content of the flue gas of the reboiler. The measurement of the oxygen content can be conducted in situ using an oxygen sensor. However, soot that may appear around the sensor due to the combustion process in the debutanizer reboiler can obstruct the sensor’s function. In-situ redundancy sensors’ unavailability is a significant problem when the sensor is damaged, so measures must be made directly by workers using portable devices. On the other hand, worker safety is a primary concern when

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2

Zhang, Mao Lin, Tao Ning, and Yu Hong Yang. "Gas Response Properties of Noble Metal Modified TiO₂ Gas Sensor." Advanced Materials Research 706-708 (June 2013): 126–29. http://dx.doi.org/10.4028/www.scientific.net/amr.706-708.126.

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The response characteristics of noble metal (platinum and palladium) modified TiO2 gas sensors were investigated, respectively. X-ray diffraction (XRD) and scanning electron microscope (SEM) were used to characterize the sensing films. In addition, the resistance of sensors response to oxygen partial pressure was discussed by Kroger–Vink model. The response properties indicated that Pt modified TiO2 was providing excellent response properties when the sensor exposed to hydrogen and oxygen. The response mechanism was suggested to arise from the activation energy (E) of the modified sensing film

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3

Duan, Chao, Lejun Zhang, Zhaoxi Wu, Xu Wang, Meng Meng, and Maolin Zhang. "Study on the Deterioration Mechanism of Pb on TiO2 Oxygen Sensor." Micromachines 14, no. 1 (2023): 156. http://dx.doi.org/10.3390/mi14010156.

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Previous studies have shown that the pollutants in exhaust gas can cause performance deterioration in air-fuel oxygen sensors. Although the content of Pb in fuel oil is as low as 5 mg/L, the effect of long-term Pb accumulation on TiO2 oxygen sensors is still unclear. In this paper, the influence mechanism of Pb-containing additives in automobile exhaust gas on the response characteristics of TiO2 oxygen sensors was simulated and studied by depositing Pb-containing pollutants on the surface of a TiO2 sensitive film. It was found that the accumulation of Pb changed the surface gas adsorption sta

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4

Sun, Jingxia, Aimin Zhang, Guoqiang Gong, and Jian Jiang. "Study on calibration period of Gas Sensor in exercise Pulmonary Function instrument." Modern Electronic Technology 2, no. 3 (2018): 66. http://dx.doi.org/10.26549/met.v2i3.1133.

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Objective: to study the calibration period of the main motor pulmonary function instrument sensor. Methods: A matched control group was used, one was calibrated periodically and the other was not calibrated. The calibration values of oxygen sensor and carbondioxide sensor were compared. Results: the oxygen sensor of electrochemical type was most sensitive to the change of time and environment, and the carbon dioxide sensor of infrared type was more sensitive to the change of time and environment. Conclusion: oxygen sensors of electrochemical type and carbon dioxide sensors of infrared type sho

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5

Liu, Jianqiao, Wanqiu Wang, Zhaoxia Zhai, et al. "Influence of Oxygen Vacancy Behaviors in Cooling Process on Semiconductor Gas Sensors: A Numerical Analysis." Sensors 18, no. 11 (2018): 3929. http://dx.doi.org/10.3390/s18113929.

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The influence of oxygen vacancy behaviors during a cooling process in semiconductor gas sensors is discussed by the numerical analysis method based on the gradient-distributed oxygen vacancy model. A diffusion equation is established to describe the behaviors of oxygen vacancies, which follows the effects of diffusion and exclusion in the cooling process. Numerical analysis is introduced to find the accurate solutions of the diffusion equation. The solutions illustrate the oxygen vacancy distribution profiles, which are dependent on the cooling rate as well as the temperature interval of the c

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6

Russ, Tamara, Joseph R. Stetter, David Peaslee, Vinay Patel, Firouzeh Mohadjerani, and Edward F. Stetter. "RTILs as Electrolytes in Electrochemical Gas Sensors for O₂ and Other Gases." ECS Meeting Abstracts MA2023-01, no. 52 (2023): 2603. http://dx.doi.org/10.1149/ma2023-01522603mtgabs.

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Oxygen is the third-most abundant element on this planet and is essential to life, the lifestyle of humans and virtually all sentient life. We need O2 to live and additionally use it for both heating and transportation. Since O2 is so essential in our everyday life, there are several applications where the oxygen levels need to be controlled or maintained within a certain range. To make sure that the O2 level is within the necessary range, devices are needed that can monitor and feedback/communicate O2 levels continuously. There are several types of chemical gas sensors for O2 which include ch

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7

Agustinur, Satya Cantika, Khaled Issa Khalifa, Meta Yantidewi, and Utama Alan Deta. "Literature Review: Air Oxygen Level Monitoring System." International Journal of Research and Community Empowerment 1, no. 2 (2023): 62–70. http://dx.doi.org/10.58706/ijorce.v1n2.p62-70.

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Oxygen is a very important gas for humans. The need for oxygen around the plant is very low because the exhaust gas from various factories often becomes pollutants, one of which is the cement industry. The oxygen content needs to be known so that the level of vigilance of workers and the community is higher. For this reason, it is necessary to make a monitoring device for oxygen content. In this view will be discussed several gas sensors, especially oxygen sensors. In addition, Arduino microcontrollers and Raspberry Pi microprocessors were also discussed. The goal is to be able to determine th

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8

Vasiliev, Alexey, Alexey Shaposhnik, Oleg Kul, and Artem Mokrushin. "The Role of Convection and Size Effects in Microhotplate Heat Exchange: Semiconductor and Thermomagnetic Gas Sensors." Sensors 25, no. 9 (2025): 2830. https://doi.org/10.3390/s25092830.

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The analysis of the influence of microhotplate size on the convective heat exchange of gas sensors is presented. Usually, the role of convection in the heat exchange of gas sensors is not considered in thermal simulation models because of the complexity of the convection process. As a result, the contribution of this process to the overall heat loss of sensors remains without detailed analysis. We analyzed convection issues in two groups of gas sensors: semiconductor and thermocatalytic (calorimetric) sensors and, on the other hand, in the oxygen sensors of the thermomagnetic type. It is demon

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9

Shafanda, Nabil Sembodo, Effendy Nazrul, Dwiantoro Kenny, and Muddin Nidlom. "Radial basis network estimator of oxygen content in the flue gas of debutanizer reboiler." International Journal of Electrical and Computer Engineering (IJECE) 12, no. 3 (2022): 3044–50. https://doi.org/10.11591/ijece.v12i3.pp3044-3050.

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The energy efficiency in the debutanizer reboiler combustion can be monitored from the oxygen content of the flue gas of the reboiler. The measurement of the oxygen content can be conducted in situ using an oxygen sensor. However, soot that may appear around the sensor due to the combustion process in the debutanizer reboiler can obstruct the sensor’s function. In-situ redundancy sensors’ unavailability is a significant problem when the sensor is damaged, so measures must be made directly by workers using portable devices. On the other hand, worker safety is a primary concern when

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10

Maskell, W. C., and B. C. H. Steele. "Solid state potentiometric oxygen gas sensors." Journal of Applied Electrochemistry 16, no. 4 (1986): 475–89. http://dx.doi.org/10.1007/bf01006843.

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11

Tutunea, Dragos, Ilie Dumitru, Oana Victoria Oţăt, Laurentiu Racila, Ionuţ Daniel Geonea, and Claudia Cristina Rotea. "Oxygen Sensor Testing for Automotive Applications." Applied Mechanics and Materials 896 (February 2020): 249–54. http://dx.doi.org/10.4028/www.scientific.net/amm.896.249.

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During the operation of internal combustion engines the air-fuel ratio (A/F) is an important parameter which affects fuel consumption and pollutant emissions. The automotive oxygen sensor (Lambda) measures the quantity of residual oxygen in the combustion gases. Sensor degradation in time due to the exposure to high temperatures causes a distortion in controlling the A/F with the increase in gas emissions. In this paper an experimental stand is designed to test oxygen sensor degradation in laboratory condition. Four oxygen sensors were tested function of temperature and time recording their va

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12

Shu, Lin, Xuemin Wang, Dawei Yan, Long Fan, and Weidong Wu. "The Investigation of High-Temperature SAW Oxygen Sensor Based on ZnO Films." Materials 12, no. 8 (2019): 1235. http://dx.doi.org/10.3390/ma12081235.

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In this paper, a wireless oxygen sensor based on a surface acoustic wave (SAW) was reported. For high-temperature applications, novel Al2O3/ZnO/Pt multilayered conductive film was deposited on langasite substrate as the electrodes, and ZnO film obtained by the pulse laser deposition (PLD) method was used as the sensitive film. The measurements of X-ray diffraction (XRD) and a scanning electron microscope (SEM) showed that the c-axis orientation of the ZnO grains and the surface morphology of the films were regulated by the deposition temperature. Meanwhile, the gas response of the sensor was s

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13

Hendryani, Atika, Vita Nurdinawati, and Nashrul Dharma. "Design of Manifold with Pressure Controller for Automatic Exchange of Oxygen Gas Cylinders in Hospital." TEKNIK 42, no. 1 (2021): 45–51. http://dx.doi.org/10.14710/teknik.v42i1.33127.

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The regulation and supply of oxygen as one of the medical gases in the hospital is important to ensure the availability of these gases for the survival of patients. The regulation of oxygen gas in hospitals usually uses a piping system with manifolds. The manifold will monitor the oxygen gas pressure on each tube. Manifold systems that are widely used in general can only monitor pressure but cannot perform an automatic exchange on gas cylinders if the pressure is under the permissible conditions. The manifold system design developed is equipped with pressure monitoring for automatic exchange o

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14

Torkamani Cheriani, Mahmoud, and Ali Mirzaei. "Plasma-Treated Nanostructured Resistive Gas Sensors: A Review." Sensors 25, no. 7 (2025): 2307. https://doi.org/10.3390/s25072307.

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Resistive gas sensors are among the most widely used sensors for the detection of various gases. In this type of gas sensor, the gas sensing capability is linked to the surface properties of the sensing layer, and accordingly, modification of the sensing surface is of importance to improve the sensing output. Plasma treatment is a promising way to modify the surface properties of gas sensors, mainly by changing the amounts of oxygen ions, which have a central role in gas sensing reactions. In this review paper, we focus on the role of plasma treatment in the gas sensing features of resistive g

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15

Sricharoen, C., T. Waritananta, N. Wattanavicheana, R. Jaisuthi, and T. Osotchan. "Flow dependence of handheld breath analyzer for body fuel utilization monitoring." Journal of Physics: Conference Series 2431, no. 1 (2023): 012017. http://dx.doi.org/10.1088/1742-6596/2431/1/012017.

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Abstract Home healthcare medical technologies have been gaining popularity and are more affordable in recent years. Exhaled breath analysis has potential in this field. The development of gas sensor technology has enabled us to build a small affable breath analysis device with the electronic nose concept. In this work, a handheld breath analyzer was developed for monitoring body fuel utilization. A hybrid gas sensor array, including electrochemical and photoacoustic gas sensors, was used to accurately measure oxygen and carbon dioxide in exhaled breath. The bypass configuration volume flow mea

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16

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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17

Nalimova, Svetlana, Zamir Shomakhov, Anton Bobkov, and Vyaсheslav Moshnikov. "Sacrificial Doping as an Approach to Controlling the Energy Properties of Adsorption Sites in Gas-Sensitive ZnO Nanowires." Micro 3, no. 2 (2023): 591–601. http://dx.doi.org/10.3390/micro3020040.

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Currently, devices for environmental gas analyses are required in many areas of application. Among such devices, semiconductor-resistive gas sensors differ advantageously. However, their characteristics need further improvement. The development of methods for controlling the surface properties of nanostructured metal oxides for their use as gas sensors is of great interest. In this paper, a method involving the sacrificial doping of ZnO nanowires to control the content of their surface defects (oxygen vacancies) was proposed. Zinc oxide nanowires were synthesized using the hydrothermal method

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18

Paz Alpuche, Emilio, Pascal Gröger, Xuetao Wang, Thomas Kroyer, and Stefanos Fasoulas. "Influence of the Sputtering Technique and Thermal Annealing on YSZ Thin Films for Oxygen Sensing Applications." Coatings 11, no. 10 (2021): 1165. http://dx.doi.org/10.3390/coatings11101165.

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Yttria-stabilized zirconia (YSZ) thin films were deposited using direct current (reactive and metallic) and radio frequency magnetron sputtering. The effect of the deposition technique and annealing treatment on the microstructure and crystallinity of the thin films was assessed. Using the films produced in this work, oxygen gas sensors were built and their performance under vacuum conditions was evaluated. All the films exhibited a cubic crystalline structure after a post-deposition thermal treatment, regardless of the sputtering technique. When the annealing treatment surpassed 1000 °C, impu

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19

Sharif, Niloufar, and Ardemis Anoush Boghossian. "Carbon Nanotube-Based Sensors for Intelligent Packaging." ECS Meeting Abstracts MA2023-01, no. 10 (2023): 1225. http://dx.doi.org/10.1149/ma2023-01101225mtgabs.

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Aim: The aim of this project is to develop a gas-phase optical sensor for oxygen detection in intelligent packaging. The optical sensor will be based on near-infrared light that can penetrate through visibly opaque materials, including plastics, paper, and cardboard. An automated near-infrared camera will be used to precisely and quickly inform the user of any change in the integrity of packages that are vacuum-sealed or atmospherically modified. Method: The optical sensor is based on near-infrared fluorescence that is emitted from carbon nanotubes (CNTs). CNTs exhibit a sensitive and photosta

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20

Liang, Meihua, Yong Yan, Jiaxuan Yang, et al. "In Situ-Derived N-Doped ZnO from ZIF-8 for Enhanced Ethanol Sensing in ZnO/MEMS Devices." Molecules 29, no. 8 (2024): 1703. http://dx.doi.org/10.3390/molecules29081703.

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Microelectromechanical systems (MEMS) gas sensors have numerous advantages such as compact size, low power consumption, ease of integration, etc., while encountering challenges in sensitivity and high resistance because of their low sintering temperature. This work utilizes the in situ growth of Zeolitic Imidazolate Framework-8 (ZIF-8) followed by its conversion to N-doped ZnO. The results obtained from scanning electron microscopy (SEM) and transmission electron microscopy (TEM) indicate that the in situ derivation of ZIF-8 facilitates the adhesion of ZnO particles, forming an island-like str

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Pan, Hongyin, Chenyu Wang, Zexu Zhang, et al. "Oxygen vacancy-enriched ALD NiO sub-50 nm thin films for enhanced triethylamine detection." Applied Physics Letters 121, no. 11 (2022): 111603. http://dx.doi.org/10.1063/5.0104480.

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p-type metal oxide semiconductors have received significant interest in the field of gas sensors; however, it is quite challenging to achieve high sensor response because of inferior surface and electronic properties. Herein, we report a high-performance gas sensor fabricated by plasma-etching an NiO thin film deposited by atomic layer deposition. Ar plasma treatment is found to introduce a large number of oxygen vacancies, which effectively adjusts the electronic and chemical characteristics of the p-type NiO films to afford improved response to toxic triethylamine. The effects of the thickne

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22

Huang, Qingwu, Jinjin Wu, Dawen Zeng, and Peng Zhou. "Graphene-Wrapped ZnO Nanocomposite with Enhanced Room-Temperature Photo-Activated Toluene Sensing Properties." Materials 17, no. 5 (2024): 1009. http://dx.doi.org/10.3390/ma17051009.

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Graphene-wrapped ZnO nanocomposites were fabricated by a simple solvothermal technology with a one-pot route. The structure and morphology of these as-fabricated samples were systematically characterized. The adding of graphene enhanced the content of the oxygen vacancy defect of the sample. All gas-sensing performances of sensors based on as-prepared samples were thoroughly studied. Sensors displayed an ultrahigh response and exceptional selectivity at room temperature under blue light irradiation. This excellent and enhanced toluene gas-sensing property was principally attributed to the syne

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23

Müller, Gerhard, and Giorgio Sberveglieri. "Origin of Baseline Drift in Metal Oxide Gas Sensors: Effects of Bulk Equilibration." Chemosensors 10, no. 5 (2022): 171. http://dx.doi.org/10.3390/chemosensors10050171.

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Metal oxide (MOX) gas sensors and gas sensor arrays are widely used to detect toxic, combustible, and corrosive gases and gas mixtures inside ambient air. Important but poorly researched effects counteracting reliable detection are the phenomena of sensor baseline drift and changes in gas response upon long-term operation of MOX gas sensors. In this paper, it is shown that baseline drift is not limited to materials with poor crystallinity, but that this phenomenon principally also occurs in materials with almost perfect crystalline order. Building on this result, a theoretical framework for th

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24

Moos, Ralf, Noriya Izu, Frank Rettig, Sebastian Reiß, Woosuck Shin, and Ichiro Matsubara. "Resistive Oxygen Gas Sensors for Harsh Environments." Sensors 11, no. 4 (2011): 3439–65. http://dx.doi.org/10.3390/s110403439.

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Plata, Desirée L., Yadira J. Briones, Rebecca L. Wolfe, et al. "Aerogel-platform optical sensors for oxygen gas." Journal of Non-Crystalline Solids 350 (December 2004): 326–35. http://dx.doi.org/10.1016/j.jnoncrysol.2004.06.046.

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Suematsu, Kouichi, Takanori Honda, Masayoshi Yuasa, Tetsuya Kida, Kengo Shimanoe, and Noboru Yamazoe. "Effect of Foreign Metal Doping on the Gas Sensing Behaviors of SnO₂-Based Gas Sensor." Advanced Materials Research 47-50 (June 2008): 1502–5. http://dx.doi.org/10.4028/www.scientific.net/amr.47-50.1502.

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Recently, we have proposed some theoretical models, power laws and effect of particle shape and size, for semiconductor gas sensors. The models show that a depletion theory of semiconductor can be combined with the dynamics of adsorption and/or reactions of gases on the surface. In the case of SnO2, the relative resistance (R/R0) is proportional to PO 2 n, where n is a constant value (n=1/2) on oxygen partial pressure. In addition, carrier concentration in SnO2 influences depth of the depletion. In this study, to experimentally reveal such effects, we tried to control the carrier concentration

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Cervera Gómez, Javier, Jose Pelegri-Sebastia, and Rafael Lajara. "Circuit Topologies for MOS-Type Gas Sensor." Electronics 9, no. 3 (2020): 525. http://dx.doi.org/10.3390/electronics9030525.

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Metal Oxide Semiconductor or MOS-type gas sensors are resistive sensors which can detect different reducible or volatile gases in atmospheres with oxygen. These gas sensors have been used in different areas such as food and drink industries or healthcare, among others. In this type of sensor, the resistance value changes when it detects certain types of gases. Due to the electrical characteristics, the sensors need a conditioning circuit to transform and acquire the data. Four different electronic topologies, two different MOS-type gas sensors, and different concentrations of a gas substance a

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van, den Heever TS, L. Hardie G., and J. Perold W. "Zno Nanowire Gas Sensor ith Uv-Light for Improved Sensitivity." International Journal of Nano Studies & Technology 2, no. 1 (2013): 12–16. https://doi.org/10.19070/2167- 8685-130003.

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ZnO nanowires are synthesised on a patterned substrate in order to see the response to different gases. Under ambient conditions the sensor shows very little response to any gas. A UV-light source is used to increase the sensitivity of the sensor by increasing the conductivity of the ZnO nanowires. The UV-light decreases the number of oxygen ions present on the surface of the ZnO nanowires which leads to better sensitivity. The sensor, with the aid of the laser, can distinguish between the different gases that were used, argon, oxygen, carbon dioxide and nitrogen. When a mi

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Ahn, Sanghoon, Kang Woo Chun, and Changkyoo Park. "Long-Term Stability Test for Femtosecond Laser-Irradiated SnO2-Nanowire Gas Sensor for C7H8 Gas Sensing." Photonics 11, no. 6 (2024): 550. http://dx.doi.org/10.3390/photonics11060550.

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In this study, femtosecond (FS) laser irradiation with different laser energy densities of 138, 276, and 414 mJ/cm2 is applied to SnO2-nanowire (NW) gas sensors, and the effect of the FS laser irradiation on the gas sensor response toward toluene (C7H8) gas is investigated. The FS laser irradiation causes oxygen deficiency in the SnO2 NWs and forms SnO and SnOx. Moreover, an embossing surface with multiple nano-sized bumps is created on the SnO2 NW surface because of the FS laser irradiation. The FS laser-irradiated SnO2-NW gas sensor exhibits superior sensing performance compared with the pri

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Lin, Liyang, Susu Chen, Tao Deng, and Wen Zeng. "Oxygen-Deficient Stannic Oxide/Graphene for Ultrahigh-Performance Supercapacitors and Gas Sensors." Nanomaterials 11, no. 2 (2021): 372. http://dx.doi.org/10.3390/nano11020372.

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The metal oxides/graphene nanocomposites have great application prospects in the fields of electrochemical energy storage and gas sensing detection. However, rational synthesis of such materials with good conductivity and electrochemical activity is the topical challenge for high-performance devices. Here, SnO2/graphene nanocomposite is taken as a typical example and develops a universal synthesis method that overcome these challenges and prepares the oxygen-deficient SnO2 hollow nanospheres/graphene (r-SnO2/GN) nanocomposite with excellent performance for supercapacitors and gas sensors. The

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Herrmann, Julia, Gunter Hagen, Jaroslaw Kita, Frank Noack, Dirk Bleicker, and Ralf Moos. "Multi-gas sensor to detect simultaneously nitrogen oxides and oxygen." Journal of Sensors and Sensor Systems 9, no. 2 (2020): 327–35. http://dx.doi.org/10.5194/jsss-9-327-2020.

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Abstract. Due to tightened emission limits, the efficiency of exhaust gas aftertreatment systems has to be further enhanced. Therefore, inexpensive and robust NOx sensors are required to be installed not only in automotive exhausts, but also in any other kind of combustion-based application. In this contribution, an impedimetric NOx sensor is presented. The impedance of a functional thick film (KMnO4, manufactured in a screen-printing technique on planar alumina substrates) depends selectively on the NOx concentration in the exhaust but shows a dependency on the oxygen concentration. Therefore

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Nazrul, Effendy, David Kurniawan Eko, Dwiantoro Kenny, Arif Agus, and Muddin Nidlom. "The prediction of the oxygen content of the flue gas in a gas-fired boiler system using neural networks and rand." International Journal of Artificial Intelligence (IJ-AI) 11, no. 3 (2022): 923–29. https://doi.org/10.11591/ijai.v11.i3.pp923-929.

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The oxygen content of the gas-fired boiler flue gas is used to monitor boiler combustion efficiency. Conventionally, this oxygen content is measured using an oxygen content sensor. However, because it operates in extreme conditions, this oxygen sensor tends to have the disadvantage of high maintenance costs. In addition, the absence of other sensors as an element of redundancy and when there is damage to the sensor causes manual handling by workers. It is dangerous for these workers, considering environmental conditions with high-risk hazards. We propose an artificial neural network (ANN) and

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Miyata, Shigeru. "Universal Exhaust Gas Oxygen Sensor and Other Sensors for Engine Control." Journal of The Japan Institute of Marine Engineering 39, no. 11 (2004): 759–64. http://dx.doi.org/10.5988/jime.39.759.

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Kim, Seongyul, Sunil Pal, Pulickel M. Ajayan, Theodorian Borca-Tasciuc, and Nikhil Koratkar. "Electrical Breakdown Gas Detector Featuring Carbon Nanotube Array Electrodes." Journal of Nanoscience and Nanotechnology 8, no. 1 (2008): 416–19. http://dx.doi.org/10.1166/jnn.2008.187.

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We demonstrate here detection of dichloro-difluoro-methane and oxygen in mixtures with helium using a carbon nanotube electrical breakdown sensor device. The sensor is comprised of an aligned array of multiwalled carbon nanotubes deposited on a nickel based super-alloy (Inconel 600) as the anode; the counter electrode is a planar nickel sheet. By monitoring the electrical breakdown characteristics of oxygen and dichloro-difluoro-methane in a background of helium, we find that the detection limit for dichloro-difluoro-methane is ∼0.1% and the corresponding limit for oxygen is ∼1%. A phenomenolo

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Palmeira, J., L. Lopes, A. J. Silva, P. A. S. Jorge, and A. Oliva. "Optimization of Ormosil Glasses for Luminescence Based Dissolved Oxygen Sensors." Solid State Phenomena 161 (June 2010): 1–11. http://dx.doi.org/10.4028/www.scientific.net/ssp.161.1.

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In the recent years, sol-gel films have been intensively used in optical sensors configurations. Due to its hydrophobic nature, ormosil films have been reported to be a promising supporting matrix for oxygen sensing dyes for measurements in aqueous media. In this work, the impact of the sol-gel host fabrication parameters in the characteristics of the resulting oxygen sensing membranes is thoroughly evaluated. Different combinations of organic-inorganic precursors, with different aging times, were tested as oxygen sensors. All the solution were doped with ruthenium complex Ru(II)-tris(4,7-diph

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Iswanto, Iswanto, Alfian Ma’arif, Bilah Kebenaran, and Prisma Megantoro. "Design of gas concentration measurement and monitoring system for biogas power plant." Indonesian Journal of Electrical Engineering and Computer Science 22, no. 2 (2021): 726. http://dx.doi.org/10.11591/ijeecs.v22.i2.pp726-732.

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Biogas is a gas obtained from the breakdown of organic matter (such as animal waste, human waste, and plants) by methanogenic bacteria in an oxygen-free (anaerobic) state. The biogas produced mainly consists of 50-70% methane, 30-40% carbon dioxide, and other gases in small amounts. The gas produced has a different composition depending on the type of animal that produces it. It is challenging to obtain biogas concentration data because the monitoring equipment is currently minimal. Therefore, this research discusses how to make a monitoring system for biogas reactors. Sensors are installed in

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Donker, Nils, Daniela Schönauer-Kamin, and Ralf Moos. "Mixed-Potential Ammonia Sensor Based on a Dense Yttria-Stabilized Zirconia Film Manufactured at Room Temperature by Powder Aerosol Deposition." Sensors 24, no. 3 (2024): 811. http://dx.doi.org/10.3390/s24030811.

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Powder aerosol deposition (often abbreviated as PAD, PADM, or ADM) is a coating method used to obtain dense ceramic films at room temperature. The suitability of this method to obtain ammonia mixed-potential sensors based on an yttria-stabilized zirconia (YSZ) electrolyte that is manufactured using PAD and a V2O5–WO3–TiO2 (VWT)-covered electrode is investigated in this study. The sensor characteristics are compared with data from sensors with screen-printed YSZ solid electrolytes. The PAD sensors outperform those in terms of sensitivity with 117 mV/decade NH3 compared to 88 mV/decade. A variat

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Roy, Sandip K., Konstantin V. Vassilevski, Christopher J. O'Malley, Nick G. Wright, and Alton B. Horsfall. "Discriminating High k Dielectric Gas Sensors." Materials Science Forum 778-780 (February 2014): 1058–62. http://dx.doi.org/10.4028/www.scientific.net/msf.778-780.1058.

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High temperature gas sensors for the detection of harmful gases under extreme conditions have been demonstrated. Here, we show the detection and selective response of two SiC based MIS sensor structures with HfO2and TiO2high κ dielectric layers to two different hydrogen containing gases. The structures utilise a Pt catalytic gate contact and a high-κ dielectric that was grown on a thin SiO2layer, which was thermally grown on the Si face of epitaxial 4H SiC. The chemical characteristics of MIS capacitors have been studied in N2, O2, H2and CH4ambients at 573K. The data show a positive flatband v

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Platonov, Vadim, Abulkosim Nasriddinov, and Marina Rumyantseva. "Electrospun ZnO/Pd Nanofibers as Extremely Sensitive Material for Hydrogen Detection in Oxygen Free Gas Phase." Polymers 14, no. 17 (2022): 3481. http://dx.doi.org/10.3390/polym14173481.

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The development of safety sensors is an urgent necessity for the successful use of hydrogen in real conditions, which may differ, in particular, by the oxygen content in the surrounding atmosphere. Palladium-modified zinc oxide shows the high sensitivity when detecting hydrogen in air; however, studies of the sensor properties and the operation mechanism of the ZnO/Pd sensor when reducing gases are detected in an oxygen deficient or inert atmosphere have not been effectuated. In this work, we synthesized the ZnO and ZnO/Pd nanofibers by electrospinning and for the first time determined their s

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Mohammadi, M. R., Mohammad Ghorbani, and Derek J. Fray. "Influence of Secondary Oxide Phases on Microstructural and Gas Sensitive Properties of Nanostructured Titanium Dioxide Thin Films." Advanced Materials Research 47-50 (June 2008): 41–44. http://dx.doi.org/10.4028/www.scientific.net/amr.47-50.41.

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A systematic comparison of single and binary metal oxide TiO2, TiO2-Ga2O3, TiO2-Er2O3 and TiO2-Ta2O5 gas sensors with nanocrystalline and mesoporous microstructure, prepared by solgel route, was conducted. The gas sensitivity was increased by secondary phase introduction into TiO2 film via two mechanisms, firstly through the inhibition of anatase-to-rutile transformation, since the anatase phase accommodates larger amounts of adsorbed oxygen, and secondly through the retardation of grain growth, since the higher surface area provides more active sites for gas molecule adsorption. The binary me

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Effendy, Nazrul, Eko David Kurniawan, Kenny Dwiantoro, Agus Arif, and Nidlom Muddin. "The prediction of the oxygen content of the flue gas in a gas-fired boiler system using neural networks and random forest." IAES International Journal of Artificial Intelligence (IJ-AI) 11, no. 3 (2022): 923. http://dx.doi.org/10.11591/ijai.v11.i3.pp923-929.

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<p><span lang="EN-US">The oxygen content of the gas-fired boiler flue gas is used to monitor boiler combustion efficiency. Conventionally, this oxygen content is measured using an oxygen content sensor. However, because it operates in extreme conditions, this oxygen sensor tends to have the disadvantage of high maintenance costs. In addition, the absence of other sensors as an element of redundancy and when there is damage to the sensor causes manual handling by workers. It is dangerous for these workers, considering environmental conditions with high-risk hazards. We propose an ar

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Sapkota, Raju, Pengjun Duan, Tanay Kumar, Anusha Venkataraman, and Chris Papadopoulos. "Thin Film Gas Sensors Based on Planetary Ball-Milled Zinc Oxide Nanoinks: Effect of Milling Parameters on Sensing Performance." Applied Sciences 11, no. 20 (2021): 9676. http://dx.doi.org/10.3390/app11209676.

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Planetary ball-milled zinc oxide (ZnO) nanoparticle suspensions (nanoinks) were used to produce thin film chemiresistive gas sensors that operate at room temperature. By varying milling or grinding parameters (speed, time, and solvent) different thin film gas sensors with tunable particle sizes and porosity were fabricated and tested with dry air/oxygen against hydrogen, argon, and methane target species, in addition to relative humidity, under ambient light conditions. Grinding speeds of up to 1000 rpm produced particle sizes and RMS thin film roughness below 100 nm, as measured by atomic for

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Wang, Da Yu, and Eric Detwiler. "Electrode dynamic study of exhaust gas oxygen sensors." Sensors and Actuators B: Chemical 99, no. 2-3 (2004): 571–78. http://dx.doi.org/10.1016/j.snb.2004.01.009.

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Liu, Xiaohui, Wei Sun, Luyi Zou, et al. "Neutral cuprous complexes as ratiometric oxygen gas sensors." Dalton Trans. 41, no. 4 (2012): 1312–19. http://dx.doi.org/10.1039/c1dt11777g.

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Souri, M., M. N. Azarmanesh, E. Abbaspour Sani, M. Nasseri, and Kh Farhadi. "An analytical study of resistive oxygen gas sensors." Journal of Physics: Condensed Matter 20, no. 14 (2008): 145204. http://dx.doi.org/10.1088/0953-8984/20/14/145204.

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Evans, John T., Michael P. Sama, Joseph L. Taraba, and George B. Day. "Automated Calibration of Electrochemical Oxygen Sensors for Use in Compost Bedded Pack Barns." Transactions of the ASABE 60, no. 3 (2017): 957–62. http://dx.doi.org/10.13031/trans.12099.

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Abstract. The objective of this study was to develop an automated calibration process for a galvanic cell type oxygen sensor. The manufacturer recommended a two-point calibration at room temperature; however, testing revealed that the response was not linear when both the temperature and oxygen concentrations varied. Thus, additional points were needed to generate a representative calibration equation and to reduce the sensor prediction interval. The calibration process needed to be capable of automatically recording sensor response (voltage) at an array of temperatures and oxygen concentratio

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Ling, Yan, Yunjiang Yu, Canxin Tian, and Changwei Zou. "Improving the NO2 Gas Sensing Performances at Room Temperature Based on TiO2 NTs/rGO Heterojunction Nanocomposites." Nanomaterials 14, no. 22 (2024): 1844. http://dx.doi.org/10.3390/nano14221844.

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The development of energy-efficient, sensitive, and reliable gas sensors for monitoring NO2 concentrations has garnered considerable attention in recent years. In this manuscript, TiO2 nanotube arrays/reduced graphene oxide nanocomposites with varying rGO contents (TiO2 NTs/rGO) were synthesized via a two-step method for room temperature NO2 gas detection. From SEM and TEM images, it is evident that the rGO sheets not only partially surround the TiO2 nanotubes but also establish interconnection bridges between adjacent nanotubes, which is anticipated to enhance electron–hole separation by faci

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Zhang, Peng, Shuang Cao, Ning Sui, et al. "Influence of Positive Ion (Al3+, Sn4+, and Sb5+) Doping on the Basic Resistance and Sensing Performances of ZnO Nanoparticles Based Gas Sensors." Chemosensors 10, no. 9 (2022): 364. http://dx.doi.org/10.3390/chemosensors10090364.

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Despite potential advantages of metal oxide semiconductors (MOSs)-based gas sensors, the limitation of very high baseline resistance is still unsatisfactory for practical application. By means of element doping, the performance of metal oxide materials used as gas sensors can be optimized. Herein, different cations (Al3+, Sn4+, and Sb5+) doped ZnO nanoparticles were synthesized and used as the acetone sensing materials. Results show that the resistance of sensors based on Sn4+ doped ZnO was significantly reduced (from 5.18 to 0.28 MΩ) at 270 °C without sacrificing the acetone sensing responses

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Liu, Chih-Yi, Annada Sankar Sadhu, Riya Karmakar, et al. "Strongly Improving the Sensitivity of Phosphorescence-Based Optical Oxygen Sensors by Exploiting Nano-Porous Substrates." Biosensors 12, no. 10 (2022): 774. http://dx.doi.org/10.3390/bios12100774.

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Sensitivity is one of the crucial factors in determining the quality of a fluorescence/phosphorescence-based gas sensor, and is estimated from the measurement of responses (I0/I, where I0 and I refer to the measured optical intensity of a sensor in absence and presence of analyte molecules) at various concentrations of analytes. In this work, we demonstrate phosphorescence-based optical oxygen sensors fabricated on highly porous anodic aluminum oxide (AAO) membranes showing dramatically high response. These sensors exploit the enormous surface area of the AAO to facilitate the effective intera

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Zhu, Jiadeng. "Rational Design of Advanced Gas Sensors." ECS Meeting Abstracts MA2025-01, no. 59 (2025): 2785. https://doi.org/10.1149/ma2025-01592785mtgabs.

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Gas sensors have attracted tremendous attention during the past decades, and they have been extensively utilized in industrial, environmental, and healthcare applications. Nevertheless, how to achieve a reliable, robust system that can accurately and timely monitor different analytes (e.g., carbon dioxide, carbon monoxide, hydrogen, oxygen, etc.) is challenging, especially for their materials development. This presentation mainly focuses on the study of the formulations used for the abovementioned target gases to explore the effects on their sensitivity and selectivity. The corresponding chara

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