Toward a Gas Sensor Interface Circuit—A Review

Ren, Mingyuan; Xu, Honghai; Dong, Changchun; Zhang, Zhu

doi:10.1109/jsen.2022.3199254

Cited by 11 publications

(2 citation statements)

References 116 publications

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“…Semiconductor metal oxides (SMOs) have been widely investigated for their gas-sensing properties as a result of their high sensitivity and selectivity toward different gas molecules. − Among other varieties of metal oxide, electrochemical, catalytic, infrared, and photoionization gas sensors, semiconductor or metal-oxide-based gas sensors have better commercial potential as a result of economic viability yet efficient and accurate gas sensing. − …”

Section: Introductionmentioning

confidence: 99%

p-/n-Type Switching in the Ag/BTO/TiO₂ Nanocomposite as a Gas Sensor toward Ethanol, Liquefied Petroleum Gas, and Ammonia

Paul,

Aamir,

Aslam

et al. 2023

Langmuir

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A novel Ag/BTO/TiO 2 nanocomposite was prepared using chemical reduction and sol−gel techniques followed by sintering at ∼950 °C to grow rutile TiO 2 and remove organic materials and hydroxyl groups. The structural, optical, morphological, dielectric, and gas-sensing properties were investigated using X-ray diffraction, Fourier transform infrared spectroscopy, ultraviolet−visible spectroscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy, and inductance, capacitance, and resistance meter, respectively. The surface plasmon resonance peak of Ag was observed at 428 nm, and the absorption edge of the Ag/BTO/TiO 2 nanocomposite was observed at 235 nm, with an energy bandgap of 5.42 eV. The dielectric constant is lower at 25 °C and becomes highest at 350 °C and low frequency. The percentage response is better toward ammonia than ethanol and liquefied petroleum gas (LPG) at 25 °C, while it is greater, ∼87%, for LPG at a higher temperature. The p-/n-type switching and vice versa were recorded in the whole gas-sensing measurement. During response− recovery time, the device performed as n type for ethanol and ammonia and p type for LPG, with a very fast response time of ∼4 s for all gases. The recovery time for ethanol was achieved at 20−25 s, while for LPG and ammonia, it was ∼60 s. Moreover, the negative and positive activation energies also confirm the switching behavior in the novel Ag/BTO/TiO 2 nanocomposite.

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Section: Introductionmentioning

confidence: 99%

p-/n-Type Switching in the Ag/BTO/TiO₂ Nanocomposite as a Gas Sensor toward Ethanol, Liquefied Petroleum Gas, and Ammonia

Paul,

Aamir,

Aslam

et al. 2023

Langmuir

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“…In order to design low noise, low power consumption, small size and high performance (sensitivity), and multi-function MEMS gas sensor, its key module is still on the interface circuit research. Interface circuits can be divided into two basic categories [ 1 ], one based on pulse-width modulation (PWM) technology [ 2 , 3 , 4 , 5 ] and the other based on ADC technology [ 6 , 7 , 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

A Readout Circuit for MEMS Gas Sensor

Ren

2023

Micromachines

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In recent years, the application of gas sensors is becoming more and more extensive. Driven by potential applications such as the Internet of Things, its technology development direction begins with miniaturization, integration, modularization, and intelligence. However, there is a bottleneck in the research of interface circuits, which restricts the development of gas sensors in volume, power consumption, and intelligence. To solve this problem, a MEMS gas sensor interface circuit based on ADC technology is proposed in this paper. Under the condition of the Huahong 110 nm process, the working voltage is 3.3 V, the resistance change of 100 Ω~1 MΩ can be detected, the conversion error is in the range of 0.5~1%, and the maximum power consumption is 986 μW. The overall layout area is 0.49 × 0.77 mm2. Finally, the correctness of the circuit function is verified by post-layout simulation.

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Colorimetric cotton sensors fabricated by ultraviolet photografting for acidic gas detection: optimization and characterization

Park,

Ryu,

Kim

et al. 2024

Cellulose

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Toward a Gas Sensor Interface Circuit—A Review

Cited by 11 publications

References 116 publications

p-/n-Type Switching in the Ag/BTO/TiO₂ Nanocomposite as a Gas Sensor toward Ethanol, Liquefied Petroleum Gas, and Ammonia

p-/n-Type Switching in the Ag/BTO/TiO₂ Nanocomposite as a Gas Sensor toward Ethanol, Liquefied Petroleum Gas, and Ammonia

A Readout Circuit for MEMS Gas Sensor

Colorimetric cotton sensors fabricated by ultraviolet photografting for acidic gas detection: optimization and characterization

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Toward a Gas Sensor Interface Circuit—A Review

Cited by 11 publications

References 116 publications

p-/n-Type Switching in the Ag/BTO/TiO2 Nanocomposite as a Gas Sensor toward Ethanol, Liquefied Petroleum Gas, and Ammonia

p-/n-Type Switching in the Ag/BTO/TiO2 Nanocomposite as a Gas Sensor toward Ethanol, Liquefied Petroleum Gas, and Ammonia

A Readout Circuit for MEMS Gas Sensor

Colorimetric cotton sensors fabricated by ultraviolet photografting for acidic gas detection: optimization and characterization

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Product

Resources

About

p-/n-Type Switching in the Ag/BTO/TiO₂ Nanocomposite as a Gas Sensor toward Ethanol, Liquefied Petroleum Gas, and Ammonia

p-/n-Type Switching in the Ag/BTO/TiO₂ Nanocomposite as a Gas Sensor toward Ethanol, Liquefied Petroleum Gas, and Ammonia