Extremely simple structure hydrogen gas sensor based on single metallic thin-wire under sweep heating

Harumoto, Takashi; Fujiki, Hiroyuki; Shi, Ji; Nakamura, Yoshio

doi:10.1016/j.ijhydene.2022.08.001

Cited by 11 publications

(4 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Harumoto et al have developed a thermal gas sensor for detecting hydrogen that employs a temperature sweep on the heated element [ 118 ]. The slope of power vs. resistance (and its integral) is then used to calculate the hydrogen concentration.…”

Section: Recent Developmentsmentioning

confidence: 99%

Micromachined Thermal Gas Sensors—A Review

Gardner

Udrea

2023

Sensors

View full text Add to dashboard Cite

In recent years, there has been a growing desire to monitor and control harmful substances arising from industrial processes that impact upon our health and quality of life. This has led to a large market demand for gas sensors, which are commonly based on sensors that rely upon a chemical reaction with the target analyte. In contrast, thermal conductivity detectors are physical sensors that detect gases through a change in their thermal conductivity. Thermal conductivity gas sensors offer several advantages over their chemical (reactive) counterparts that include higher reproducibility, better stability, lower cost, lower power consumption, simpler construction, faster response time, longer lifetime, wide dynamic range, and smaller footprint. It is for these reasons, despite a poor selectivity, that they are gaining renewed interest after recent developments in MEMS-based silicon sensors allowing CMOS integration and smart application within the emerging Internet of Things (IoT). This timely review focuses on the state-of-the-art in thermal conductivity sensors; it contains a general introduction, theory of operation, interface electronics, use in commercial applications, and recent research developments. In addition, both steady-state and transient methods of operation are discussed with their relative advantages and disadvantages presented. Finally, some of recent innovations in thermal conductivity gas sensors are explored.

show abstract

Section: Recent Developmentsmentioning

confidence: 99%

Micromachined Thermal Gas Sensors—A Review

Gardner

Udrea

2023

Sensors

View full text Add to dashboard Cite

show abstract

“…The principle of thermal conductivity (TC) gas sensors is based on the measurement of the heat loss from a hot body to the surrounding atmosphere. Common TC sensors are made using MEMs (micro-electro-mechanical system) technology [43] although recent work shows that the use of metallic wire based on current sweep to be effective for detection as well [44]. A thin resistor film protected by an inert coating in order to prevent any chemical reaction is placed on a suspended membrane etched on a silicon chip.…”

Section: Thermal Conductivity Sensor 221 Detection Principlementioning

confidence: 99%

Sensors for anaerobic hydrogen measurement: A comparative study between a resistive PdAu based sensor and a commercial thermal conductivity sensor

Occelli

Fiorido

Perrin-Pellegrino

et al. 2023

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

“…This device structure was inspired by our previous studies. [20][21][22] Fig. 2(a) shows a schematic illustration of the device and measurement circuit.…”

Section: Design and Fabrication Of The Ndr Devicementioning

confidence: 99%