Multimode fiber tapers coated with Pd composite thin films for hydrogen gas sensing

2006 ◽  
Author(s):  
Donato Luna-Moreno ◽  
Carlos Juárez-Lora ◽  
David Monzón-Hernández
Keyword(s):  
Thin Films ◽  
Gas Sensing ◽  
Hydrogen Gas ◽  
Multimode Fiber ◽  
Composite Thin Films

Effect of Temperature on the Electrical and Gas Sensing Properties of Polyaniline and Multiwall Carbon Nanotube Doped Polyaniline Composite Thin Films

2011 ◽  
Vol 254 ◽  
pp. 167-170 ◽  
Author(s):  
Subodh Srivastava ◽  
Sumit Kumar ◽  
Vipin Kumar Jain ◽  
Y.K. Vijay
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Gas Sensing ◽  
Hydrogen Gas ◽  
Composite Thin Film ◽  
Effect Of Temperature ◽  
Multiwall Carbon Nanotube ◽  
Film Sensor ◽  
Composite Thin Films ◽  
Pani Composite

In the present work we have reported the effect of temperature on the gas sensing properties of pure Polyaniline (PANI) and Multiwall carbon nanotube (MWNT) doped PANI composite thin film based chemiresistor type gas sensors for hydrogen gas sensing application. PANI and MWNT doped PANI composite were synthesized by in situ chemical oxidative polymerization of aniline using ammonium persulfate in an acidic medium. The thin sensing film of chemically synthesized PANI and MWNT doped PANI composite were deposited onto finger type Cu-interdigited electrodes using spin cast technique to prepared chemiresistor type gas sensor. The electrical properties of these composite thin films were characterized by I-V measurements as function of temperature. The I-V measurement revealed that conductivity of composite thin films increased as the temperature increased. The changes in resistance of the composite thin film sensor were utilized for detection of hydrogen gas. It was observed that at room temperature, MWNT doped PANI composite sensor shows higher response value and sensitivity with good repeatability in comparison to pure PANI thin film sensor. It was also observed that both PANI and MWNT doped PANI composite thin film based sensors showed unstable behavior as the temperature increased. The surface morphology of these composite thin films has also been characterized by scanning electron microscopy (SEM) measurement.

Hydrogen gas sensing properties of WO3 sputter-deposited thin films enhanced by on-top deposited CuO nanoclusters

2018 ◽  
Vol 43 (50) ◽  
pp. 22756-22764 ◽  
Author(s):  
Stanislav Haviar ◽  
Jiří Čapek ◽  
Šárka Batková ◽  
Nirmal Kumar ◽  
Filip Dvořák ◽  
...  
Keyword(s):  
Thin Films ◽  
Gas Sensing ◽  
Hydrogen Gas ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Sputter Deposited

Palladium thin films on microfiber filtration paper as flexible substrate and its hydrogen gas sensing mechanism

2019 ◽  
Vol 44 (31) ◽  
pp. 17185-17194 ◽  
Author(s):  
Zahra Shahzamani ◽  
Mehdi Ranjbar ◽  
Elisabetta Comini ◽  
Mehdi Torabi Goodarzi ◽  
Hadi Salamati ◽  
...  
Keyword(s):  
Thin Films ◽  
Gas Sensing ◽  
Flexible Substrate ◽  
Hydrogen Gas ◽  
Sensing Mechanism

The effect of Ni content on gas-sensing behaviors of ZnO–NiO p–n composite thin films grown through radio-frequency cosputtering of ceramic ZnO and NiO targets

CrystEngComm ◽  
2020 ◽  
Vol 22 (13) ◽  
pp. 2315-2326 ◽  
Author(s):  
Yuan-Chang Liang ◽  
Yen-Cheng Chang
Keyword(s):  
Thin Films ◽  
Radio Frequency ◽  
Gas Sensing ◽  
Dual Phase ◽  
Composite Thin Films ◽  
Ni Content

In this study, dual phase ZnO–NiO p–n composite thin films were grown through radio-frequency cosputtering of ceramic ZnO and NiO targets.

Hydrogen gas sensing properties of PdO thin films with nano-sized cracks

2010 ◽  
Vol 21 (16) ◽  
pp. 165503 ◽  
Author(s):  
Young Tack Lee ◽  
Jun Min Lee ◽  
Yeon Ju Kim ◽  
Jin Hyoun Joe ◽  
Wooyoung Lee
Keyword(s):  
Thin Films ◽  
Gas Sensing ◽  
Hydrogen Gas ◽  
Sensing Properties ◽  
Gas Sensing Properties

Hydrogen gas sensors based on nanocrystalline TiO2 thin films

Open Physics ◽  
2011 ◽  
Vol 9 (5) ◽  
Author(s):  
Azhar Haidry ◽  
Peter Schlosser ◽  
Pavol Durina ◽  
Marian Mikula ◽  
Milan Tomasek ◽  
...  
Keyword(s):  
Thin Films ◽  
Annealing Temperature ◽  
Gas Sensing ◽  
Hydrogen Gas ◽  
Tio2 Thin Films ◽  
Nanocrystalline Tio2 ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Hydrogen Gas Sensors ◽  
Titanium Dioxide Thin Films

AbstractTitanium dioxide thin films are extensively studied for applications in solid state gas sensor devices. Their gas sensing properties are strongly dependent on deposition technique, annealing temperature, film thickness and consequent properties like crystalline structure, grain size or amount of defects and impurities. In this work we report the gas sensing properties of TiO2 thin films prepared by reactive magnetron sputtering technique and subsequently annealed at temperatures 600°C and 900°C. The films were exposed to different concentrations of H2 gas up to 10 000 ppm. Their sensitivity to gas at various operating temperatures, ranging from 250°C to 450°C, was obtained by measuring their resistance.

Highly responsive hydrogen gas sensing by partially reduced graphite oxide thin films at room temperature

Carbon ◽  
2012 ◽  
Vol 50 (11) ◽  
pp. 4061-4067 ◽  
Author(s):  
Jianwei Wang ◽  
Youngreal Kwak ◽  
In-yeal Lee ◽  
Sunglyul Maeng ◽  
Gil-Ho Kim
Keyword(s):  
Thin Films ◽  
Graphite Oxide ◽  
Room Temperature ◽  
Gas Sensing ◽  
Hydrogen Gas ◽  
Oxide Thin Films ◽  
Reduced Graphite Oxide

Enhancing resistive-type hydrogen gas sensing properties of cadmium oxide thin films by copper doping

2018 ◽  
Vol 42 (2) ◽  
pp. 1457-1466 ◽  
Author(s):  
K. Sankarasubramanian ◽  
P. Soundarrajan ◽  
T. Logu ◽  
K. Sethuraman ◽  
K. Ramamurthi
Keyword(s):  
Thin Films ◽  
Gas Sensing ◽  
Spray Pyrolysis Technique ◽  
Cadmium Oxide ◽  
Hydrogen Gas ◽  
Chemical Spray Pyrolysis ◽  
Glass Substrates ◽  
Gas Sensing Properties ◽  
Amorphous Glass ◽  
Cdo Thin Films

The pure and Cu-doped CdO thin films with various doping concentrations (0.5 to 2 wt%) were deposited on amorphous glass substrates by a chemical spray pyrolysis technique for hydrogen gas sensor application.

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