Flexible/wearable resistive gas sensors based on 2D materials

Ansari, Hamid Reza; Mirzaei, Ali; Shokrollahi, H.; Kumar, Rahul; Kim, Jin‐Young; Kim, Hyoun Woo; Kumar, Neeraj; Kim, Sang Sub

doi:10.1039/d3tc00806a

Cited by 39 publications

(16 citation statements)

References 143 publications

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“…The main disadvantages of pure TMDs-based chemiresistive-type gas sensors are often their low sensitivity and erratic response signals with noticeable drift. 240 To solve this issue, pure TMDs were mixed with secondary phases such as metal oxides and noble metals. 241 Guang, Q. et al , reported that the sensors made of Fe 3 O 4 /WS 2 heterostructures showed a notable enhancement in their ability to detect ammonia at ambient temperature, in comparison to the sensors made from bare WS 2 .…”

Section: Experimental Investigations Of Wse2-based Gas Sensorsmentioning

confidence: 99%

Strategic review of gas sensing enhancement ways of 2D tungsten disulfide/selenide-based chemiresistive sensors: decoration and composite

Kumar,

Mirzaei,

Lee

et al. 2024

J. Mater. Chem. A

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Section: Experimental Investigations Of Wse2-based Gas Sensorsmentioning

confidence: 99%

Strategic review of gas sensing enhancement ways of 2D tungsten disulfide/selenide-based chemiresistive sensors: decoration and composite

Kumar,

Mirzaei,

Lee

et al. 2024

J. Mater. Chem. A

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“…First, NO 2 is a harmful gas found in the atmosphere that can cause damage to various parts of the human body, such as the eyes, nose, throat, and respiratory system [122][123][124]. To protect workers from the danger of this gas, a detection system is used that operates through chemical gas sensing [125][126][127][128][129][130]. This allows for an early warning system to prevent respiratory damage caused by toxic air pollutants.…”

Section: Wearable Sensors For Danger Detectionmentioning

confidence: 99%

Flexible and stretchable synaptic devices for wearable neuromorphic electronics

Lee,

Ro,

et al. 2023

Flex. Print. Electron.

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Wearable neuromorphic devices have gained attention because of the growth in the Internet of Things and the increasing demand for health monitoring. They provide meaningful information and interact with the external environment through physiological signal processing and seamless interaction with the human body. The concept of these devices originated from the development of neuromorphic and flexible/stretchable electronics, which offer a solution to the limitation of conventional rigid devices. They have been developed to mimic synaptic functions and flexibility/stretchability of the biological nervous system. In this study, we described the various synaptic properties that should be implemented in synaptic devices and the operating mechanisms that exhibit these properties with respect to two- and three-terminal devices. Further, we specified comprehensive methods of implementing mechanical flexibility and stretchability in neuromorphic electronics through both structure and material engineering. In addition, we explored various wearable applications of these devices, such as wearable sensors for danger detection, auxiliary equipment for people with sensory disabilities, and neuroprosthetic devices. We expect this review to provide an overall understanding of concepts and trends for flexible and stretchable neuromorphic devices, with potential extensions to state-of-the-art applications such as cybernetics and exoskeleton.

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“…The ever-increasing industry units and living standards have led to a rise in environmental hazards, resulting in pollution and toxic gases affecting our daily lives in various direct and indirect ways [1]. Gas sensor devices have proven to be effective in detecting toxic gases in the open atmosphere and gas leakages in industries, making them essential in smart houses and industries such as automotive plants, chemical plants, nuclear plants, and oil and gas applications [2,3]. Both SO 2 and COCl 2 are hazardous gases.…”

Section: Introductionmentioning

confidence: 99%

“…3 , COCl 2 , NH 3 , NO 2 , and SO 2 are tested on different sites of monolayers. The adsorption behavior is tested in terms of the adsorption energy, recovery time, adsorption height, Bader charge, CDD, and electronic properties.…”

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confidence: 99%

Janus HfSSe monolayer: a promising candidate for SO₂ and COCl₂ gas sensing

Kumar,

Chaurasiya

2024

Nanotechnology

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Janus monolayers based on transition metal dichalcogenides have garnered significant interest as potential materials for nano electronic device applications due to their exceptional physical and electronic properties. In this study, we investigate the stability of the Janus HfSSe monolayer using ab-initio molecular dynamics simulations and analyze the electronic properties in its pristine state. We then examine the impact of adsorbing toxic gas molecules (AsH3, CoCl2, NH3, NO2, and SO2) on the monolayer's structure and electronic properties, testing their adsorption on different active sites on top of hafnium, selenium, and sulfur. The sensitivity of the gas molecules is quantified in terms of their adsorption energy, with the highest and lowest energies being observed for SO2 (-0.278 eV) and NH3 (-0.108 eV), respectively. Additionally, we calculate other properties such as adsorption height, Bader charge, and charge difference density to determine the sensitivity and selectivity of the toxic gas molecules. Our findings suggest that the Janus HfSSe monolayer has the potential to function as SO2 and COCl2 gas sensor due to its high sensitivity and selectivity for these two gases.

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Flexible/wearable resistive gas sensors based on 2D materials

Abstract: Flexible/wearable gas sensor technology is gaining huge interest in the current era of the Internet of Things for its applications in personal environmental monitoring, healthcare, and safety. In this respect,...

Cited by 39 publications

References 143 publications

Strategic review of gas sensing enhancement ways of 2D tungsten disulfide/selenide-based chemiresistive sensors: decoration and composite

Strategic review of gas sensing enhancement ways of 2D tungsten disulfide/selenide-based chemiresistive sensors: decoration and composite

Flexible and stretchable synaptic devices for wearable neuromorphic electronics

Janus HfSSe monolayer: a promising candidate for SO₂ and COCl₂ gas sensing

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Flexible/wearable resistive gas sensors based on 2D materials

Abstract: Flexible/wearable gas sensor technology is gaining huge interest in the current era of the Internet of Things for its applications in personal environmental monitoring, healthcare, and safety. In this respect,...

Cited by 39 publications

References 143 publications

Strategic review of gas sensing enhancement ways of 2D tungsten disulfide/selenide-based chemiresistive sensors: decoration and composite

Strategic review of gas sensing enhancement ways of 2D tungsten disulfide/selenide-based chemiresistive sensors: decoration and composite

Flexible and stretchable synaptic devices for wearable neuromorphic electronics

Janus HfSSe monolayer: a promising candidate for SO2 and COCl2 gas sensing

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Product

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Janus HfSSe monolayer: a promising candidate for SO₂ and COCl₂ gas sensing