Design of n-WO3 Thin Film Hydrogen Sensor with IoT Technology

2022 ◽  
pp. 66-72
Author(s):  
Subhashis Roy ◽  
Bikram Biswas ◽  
Bijoy Kantha ◽  
Manas Ranjan Nayak
Keyword(s):  
Thin Film ◽  
Hydrogen Sensor

Reduction of Wind Disturbance by Optimizing the Drive Current of Pt Ultra-thin Film Hydrogen Sensor

2020 ◽  
Vol 140 (4) ◽  
pp. 92-96
Author(s):  
Yuto Goda ◽  
Hiroto Shobu ◽  
Kenji Sakai ◽  
Toshihiko Kiwa ◽  
Kenji Kondo ◽  
...  
Keyword(s):  
Thin Film ◽  
Hydrogen Sensor ◽  
Wind Disturbance ◽  
Drive Current ◽  
Ultra Thin Film

B- and P-Doped Si0.8Ge0.2 Thin Film Deposited by Helicon Sputtering for the Micro-Thermoelectric Gas Sensor

2006 ◽  
Vol 320 ◽  
pp. 99-102 ◽  
Author(s):  
Kazuki Tajima ◽  
Woosuck Shin ◽  
Maiko Nishibori ◽  
Norimitsu Murayama ◽  
Toshio Itoh ◽  
...  
Keyword(s):  
Thin Film ◽  
Hydrogen Oxidation ◽  
Exothermic Reaction ◽  
High Sensitivity ◽  
Hydrogen Sensor ◽  
Thermoelectric Effect ◽  
Boron Doped ◽  
Reliable Monitoring ◽  
Ppm Level ◽  
Pt Catalyzed

Micro-thermoelectric hydrogen sensor (micro-THS) with the combination of the thermoelectric effect of Si0.8Ge0.2 thin film and the Pt-catalyzed exothermic reaction of hydrogen oxidation was prepared by microfabrication process. In the viewpoint of high sensitivity of micro-THS, the thermoelectric properties of the Si0.8Ge0.2 thin film could be improved by optimizing carrier concentration using helicon sputtering with an advantage of easy doping control, and sensitivity of the device with this thin film was investigated. As the result, the boron-doped Si0.8Ge0.2 thin film is considered to be the better choice ensuring the reliable monitoring of hydrogen concentration down to ppm level.

Optical fiber hydrogen sensor based on light reflection and a palladium-sliver thin film

2011 ◽  
Vol 7 (4) ◽  
pp. 249-252 ◽  
Author(s):  
Lu-jun Cui ◽  
Hui-chao Shang ◽  
Gang Zhang ◽  
Ze-xiang Zhao ◽  
Jun Zhou
Keyword(s):  
Thin Film ◽  
Optical Fiber ◽  
Hydrogen Sensor ◽  
Light Reflection

Platinum/palladium bimetallic ultra-thin film decorated on a one-dimensional ZnO nanorods array for use as fast response flexible hydrogen sensor

2016 ◽  
Vol 176 ◽  
pp. 232-236 ◽  
Author(s):  
Kamrul Hassan ◽  
A.S.M. Iftekhar Uddin ◽  
Farman Ullah ◽  
Yong Soo Kim ◽  
Gwiy-Sang Chung
Keyword(s):  
Thin Film ◽  
Zno Nanorods ◽  
Hydrogen Sensor ◽  
Fast Response ◽  
One Dimensional ◽  
Nanorods Array ◽  
Ultra Thin Film

scholarly journals Development of a High Stability Pd-Ni Alloy Thin-Film Coated SAW Device for Sensing Hydrogen

Sensors ◽  
2019 ◽  
Vol 19 (16) ◽  
pp. 3560 ◽  
Author(s):  
Wen Wang ◽  
Xueli Liu ◽  
Shengchao Mei ◽  
Mengwei Liu ◽  
Chao Lu ◽  
...  
Keyword(s):  
Thin Film ◽  
High Sensitivity ◽  
Hydrogen Sensor ◽  
Fast Response ◽  
Propagation Path ◽  
Alloy Thin Film ◽  
Optimal Parameters ◽  
Ni Alloy ◽  
Oscillation Loop ◽  
Coated Surface

A Pd-Ni alloy thin-film coated surface acoustic wave (SAW) device is proposed for sensing hydrogen. The Pd-Ni thin-film was sputtered onto the SAW propagation path of a SAW device with a delay line pattern to build the chip-sized hydrogen sensor. The prepared sensor chip was characterized by employing a differential oscillation loop. The effect of the Pd-Ni film thickness on sensing performance was also evaluated, and optimal parameters were determined, allowing for fast response and high sensitivity. Excellent working stability (detection error of 3.7% in half a year), high sensitivity (21.3 kHz/%), and fast response (less than 10 s) were achieved from the 40 nm Pd-Ni alloy thin-film coated sensing device.

Optimizing the gas sensing characteristics of Co-doped SnO2 thin film based hydrogen sensor

2019 ◽  
Vol 785 ◽  
pp. 819-825 ◽  
Author(s):  
Zili Zhang ◽  
Chenbo Yin ◽  
Liu Yang ◽  
Jin Jiang ◽  
Yu Guo
Keyword(s):  
Thin Film ◽  
Gas Sensing ◽  
Hydrogen Sensor ◽  
Sno2 Thin Film ◽  
Sensing Characteristics ◽  
Co Doped
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