Magnetic gas sensing: working principles and recent developments

Shinde, Pratik V.; Rout, Chandra Sekhar

doi:10.1039/d0na00826e

Cited by 41 publications

(21 citation statements)

References 84 publications

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“…Magnetic gas sensors have gained popularity in recent times due to their safety and lack of electrical contacts. [71][72][73] Hence, the prospect of GaAs monolayer as a magnetic gas sensor has been explored. Spin-polarized DFT calculations were performed to analyze the magnetic moment of the gas adsorbed systems.…”

Section: Gas Sensing Performance Of Gaas Monolayermentioning

confidence: 99%

Adsorption of gas molecules on buckled GaAs monolayer: a first-principles study

2022

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Section: Gas Sensing Performance Of Gaas Monolayermentioning

confidence: 99%

Adsorption of gas molecules on buckled GaAs monolayer: a first-principles study

2022

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“…It was found in [90] that thinner film samples would be more suitable for sensing applications because of their higher surface-to-volume ratio and since the absolute value of the measured signal increases when the film thickness is decreased. This proposed concept has been followed [14,70,[108][109][110][111][112][113] and its feasibility was further confirmed by demonstrations of detection of low concentration of H 2 using thin Pd/Co films as the sensor material [70,90,109,114,115]. In particular, it was shown that the EHE sensitivity of optimised samples could exceed 240% per 104 ppm at H 2 concentrations below 0.5% in the N 2 /H 2 atmosphere [90], thus providing a more than two orders of magnitude higher sensitivity compared with the competing resistivity-based sensor architectures.…”

Section: Magneto-electronic Hydrogen Sensors Based On the Magneto-opt...mentioning

confidence: 99%

“…This urges the development of new hydrogen sensors designed to meet the demands of the emergent hydrogen economy. The literature summarising and discussing the recent progress in this rapidly growing research field is abundant (for a review see, e.g., [9][10][11][12][13][14]), and thus the reader is referred to those articles for further details. However, despite significant advances made in this area, most of the hydrogen gas sensor concepts proposed thus far have several major drawbacks, including poor sensitivity, complex detection systems, slow response time, high power consumption and potential flammability issues [11,15].…”

Section: Introductionmentioning

confidence: 99%

Magneto-electronic hydrogen gas sensors: a critical review

Maksymov¹,

Kostylev²

2021

Preprint

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Devices enabling early detection of low concentrations of leaking hydrogen and precision measurements in a wide range of hydrogen concentrations in hydrogen storage systems are essential for the mass-production of fuel-cell vehicles and, more broadly, for the transition to the hydrogen economy. Whereas several competing sensor technologies are potentially suitable for this role, ultra-low fire-hazard, contactless and technically simple magneto-electronic sensors stand apart because they have been able to detect the presence of hydrogen gas in a range of hydrogen concentrations from 0.06% to 100% at atmospheric pressure with the response time approaching the industry gold standard of one second. This new kind of hydrogen sensors is the subject of this review article, where we inform the academic physics, chemistry, material science and engineering communities as well as industry researchers about the recent developments in the field of magneto-electronic hydrogen sensors, including those based on magneto-optical Kerr effect, anomalous Hall effect and Ferromagnetic Resonance with a special focus on Ferromagnetic Resonance (FMR) based devices. In particular, we present the physical foundations of magneto-electronic hydrogen sensors and we critically overview their advantages and disadvantages for applications in the vital areas of the safety of hydrogen-powered cars and hydrogen fuelling stations as well as hydrogen concentration meters, including those operating directly inside hydrogen-fuelled fuel cells. We believe that this review will be of interest to a broad readership, also facilitating the translation of research results into policy and practice.

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“…The gas-sensing system is important in various applications including industrial pollutant gas leakage detection, environmental monitoring, medical care, food industry, etc. [ 1 ]. Nanomaterials show great performance in this field of technology [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

“…Nowadays, the most effective materials for gas sensing belong to the groups of metal-organic framework-based nanostructured materials [ 3 , 4 ] and low-dimensional materials [ 5 , 6 ]. Another type of sensor is based on magnonic sensors with the presence of magnetic nanoparticles [ 7 ] and two-dimensional materials [ 1 , 8 ] and it seems to be promising for further development.…”

Section: Introductionmentioning

confidence: 99%

Computational Design of Gas Sensors Based on V3S4 Monolayer

et al. 2022

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Novel magnetic gas sensors are characterized by extremely high efficiency and low energy consumption, therefore, a search for a two-dimensional material suitable for room temperature magnetic gas sensors is a critical task for modern materials scientists. Here, we computationally discovered a novel ultrathin two-dimensional antiferromagnet V3S4, which, in addition to stability and remarkable electronic properties, demonstrates a great potential to be applied in magnetic gas sensing devices. Quantum-mechanical calculations within the DFT + U approach show the antiferromagnetic ground state of V3S4, which exhibits semiconducting electronic properties with a band gap of 0.36 eV. A study of electronic and magnetic response to the adsorption of various gas agents showed pronounced changes in properties with respect to the adsorption of NH3, NO2, O2, and NO molecules on the surface. The calculated energies of adsorption of these molecules were −1.25, −0.91, −0.59, and −0.93 eV, respectively. Obtained results showed the prospective for V3S4 to be used as effective sensing materials to detect NO2 and NO, for their capture, and for catalytic applications in which it is required to lower the dissociation energy of O2, for example, in oxygen reduction reactions. The sensing and reducing of NO2 and NO have great importance for improving environmental protection and sustainable development.

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Magnetic gas sensing: working principles and recent developments

Abstract: Gas sensors work on the principle of transforming the gas adsorption effects on the surface of active material into the detectable signal in terms of its changed electrical, optical, thermal,...

Cited by 41 publications

References 84 publications

Adsorption of gas molecules on buckled GaAs monolayer: a first-principles study

Adsorption of gas molecules on buckled GaAs monolayer: a first-principles study

Magneto-electronic hydrogen gas sensors: a critical review

Computational Design of Gas Sensors Based on V3S4 Monolayer

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