Nanocrystalline Tin Oxide Thick-Film Gas Sensor for H2S Detection

2008 ◽  
Vol 368-372 ◽  
pp. 521-523
Author(s):  
Shu Ping Gong ◽  
Li Hua Huang ◽  
Huan Liu ◽  
Ming Li ◽  
Dong Xiang Zhou
Keyword(s):  
Grain Size ◽  
Thick Film ◽  
Gas Sensor ◽  
Tin Oxide ◽  
Screen Printing ◽  
Screen Printing Method ◽  
Oxide Powders ◽  
Low Concentrations ◽  
Average Grain Size ◽  
Optimal Value

Nanocrystalline thick-film gas sensor was fabricated by screen printing method with CuO-doped tin oxide powder synthesized by hydrothermal method. Average grain size of the CuO-doped tin oxide powders was typically below 10 nanometers and the thick-films had a narrow grain size distribution typically below 50 nanometers. Effect of the amount of CuO on the sensing properties was investigated and the optimal value was found to be 3 wt%. The nanocrystalline CuO-SnO2 thick-film gas sensors were more sensitive to H2S than those based on commercial micro SnO2 powders, which were attractive to the detection of low concentrations of H2S gas at relative low temperatures.

Fabrication and Sensing Behavior of NASICON Thick Film SO2 Gas Sensor by Screen-Printing Method

2003 ◽  
Vol 439 ◽  
pp. 352-357
Author(s):  
Sang Tae Lee ◽  
Jae Chul Bae ◽  
Hee-Kwon Jun ◽  
Duk-Dong Lee ◽  
Jeung Soo Huh
Keyword(s):  
Thick Film ◽  
Gas Sensor ◽  
Screen Printing ◽  
Screen Printing Method ◽  
Printing Method

Large Strain Actuation of 0.65PMN–0.35PT/Pt Thick-Film Bimorphs

2012 ◽  
Vol 2012 (CICMT) ◽  
pp. 000597-000602
Author(s):  
Hana Uršič ◽  
Janez Holc ◽  
Marina Santo Zarnik ◽  
Marko Hrovat ◽  
Marija Kosec
Keyword(s):  
Thick Film ◽  
Piezoelectric Layer ◽  
Screen Printing ◽  
Large Strain ◽  
Unit Length ◽  
Large Displacement ◽  
Screen Printing Method ◽  
Printing Method

The effect of clamping a piezoelectric layer to a relatively stiff substrate results in smaller displacements in comparison to substrate-free structures. To ensure a sufficient amount of the bending of actuators, it is important to reduce the thickness of the substrate. For this reason an approach to preparing “substrate-free”, large-displacement actuators using the screen-printing method was developed. The “substrate-free” 0.65PMN–0.35PT/Pt actuators were prepared by screen-printing the 0.65PMN–0.35PT and Pt pastes on alumina substrates. After the screen printing and the subsequent firing the 0.65PMN–0.35PT/Pt composites were peeled off from the substrates. The normalized displacement (the displacement per unit length) of 55 μm/cm at 18 V was achieved, which is approximately five times higher than the displacement of related actuators from the literature.

Nanocrystalline Tin Oxide Thick-Film Gas Sensor for H2S Detection

2008 ◽  
pp. 521-523
Author(s):  
Shu Ping Gong ◽  
Li Hua Huang ◽  
Huan Liu ◽  
Ming Li ◽  
Dong Xiang Zhou
Keyword(s):  
Thick Film ◽  
Gas Sensor ◽  
Tin Oxide

Effect of Temperature on Palladium-Doped Tin Oxide (SnO2) Thick Film Gas Sensor

2013 ◽  
Vol 5 (9) ◽  
pp. 932-936 ◽  
Author(s):  
Meenakshi Choudhary ◽  
V. N. Mishra ◽  
R. Dwivedi
Keyword(s):  
Thick Film ◽  
Gas Sensor ◽  
Tin Oxide ◽  
Effect Of Temperature

Sensing properties of CdS-doped tin oxide thick film gas sensor

2010 ◽  
Vol 144 (1) ◽  
pp. 37-42 ◽  
Author(s):  
Lallan Yadava ◽  
Ritesh Verma ◽  
R. Dwivedi
Keyword(s):  
Thick Film ◽  
Gas Sensor ◽  
Tin Oxide ◽  
Sensing Properties

Low-power thick-film gas sensor obtained by a combination of screen printing and micromachining techniques

2001 ◽  
Vol 391 (2) ◽  
pp. 288-292 ◽  
Author(s):  
D Vincenzi ◽  
M.A Butturi ◽  
M Stefancich ◽  
C Malagù ◽  
V Guidi ◽  
...  
Keyword(s):  
Low Power ◽  
Thick Film ◽  
Gas Sensor ◽  
Screen Printing

Preparation and Characterization of Copper-Doped Tin Oxide Nanopowder via Hydrothermal Route

2006 ◽  
Vol 45 ◽  
pp. 200-204
Author(s):  
Dong Xiang Zhou ◽  
Huan Liu ◽  
Shu Ping Gong
Keyword(s):  
Tin Oxide ◽  
Screen Printing ◽  
High Sensitivity ◽  
Average Crystallite Size ◽  
Test Results ◽  
Hydrothermal Route ◽  
Screen Printing Method ◽  
Sensor Fabrication ◽  
Printing Method

Copper-doped tin oxide nanopowder has been synthesized via the hydrothermal route, in which pure metallic Sn, diluted nitric acid solution and Cu(NO3)2 are used as the starting materials. The hydrothermal treatment at about 200°C for 10 h results in rutile crystalline SnO2 particles with a narrow size distribution typically in the range of 3~6 nm. The average crystallite size of 5 wt% CuO-doped SnO2 particles remains smaller than 12.5 nm even after annealing at 800°C. The evaluation of the sensitive properties of the synthesized powder with various amount of CuO doping is conducted on the thick-film samples fabricated by screen-printing method. The high sensitivity toward H2S as shown by the sensor test results show the possibility of using this material for gas sensor fabrication.

scholarly journals An Optimized Platinum (Pt) Doped Tin-oxide(SnO2) Ink for Deposition of Gas Sensing Thick Film on LTCC Micro-hotplate

2017 ◽  
Vol 14 (2) ◽  
pp. 158-163
Author(s):  
KRITIKA BHATTACHARYA ◽  
SHRUTI KAPOOR ◽  
NIKHIL SURI
Keyword(s):  
Grain Size ◽  
Tin Oxide ◽  
Screen Printing ◽  
Gas Sensing ◽  
Temperature Stability ◽  
High Porosity ◽  
Chemical Route ◽  
Resistance Change ◽  
Force Microscopy ◽  
Atomic Force

An optimized platinum (Pt) doped tin oxide (SnO2) ink was prepared by chemical route and was deposited on low temperature co-fired ceramics (LTCC) micro-hotplate by screen printing. An alkoxide ink was prepared by mixing tin(II) 2-ethylexanoate (17 wt%) with isopropanol (27 wt%) and SnO2 powder (55 wt%). Doping of the ink was done using Pt (1 wt%) which increased the resistance of SnO2 film at room temperature and also reduced the operating temperature. The temperature of ensor was obtained and stabilised using MOSFET based temperature stability circuit. Film characterization was performed using Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Spectroscopy (EDS) technique. Small grain size and high porosity is the requirement for good sensing. The grain size was found to be in the range of 150-180 nm and the film was sufficiently porous. Resistance change of the film was also investigated in the presence of carbon monoxide (CO) to assure gas sensing.

scholarly journals PEMBUATAN PASTA DAN PEMBENTUKAN LAPISAN TIPIS HIDROKSI APATIT KARBONAT

2015 ◽  
Vol 7 (2) ◽  
pp. 161
Author(s):  
Selfa Dewati Samah ◽  
Syukri Arief ◽  
Novesar Jamarun
Keyword(s):  
Thick Film ◽  
Screen Printing ◽  
Crystal Size ◽  
Xrd Analysis ◽  
Hexagonal Crystal ◽  
Screen Printing Method ◽  
Carbonated Hydroxyapatite ◽  
Particle Size Analyzer ◽  
Bet Analysis ◽  
Phosphate Carbonate

 ABSTRACTPaste of Carbonated Hydroxyapatite (CHA) as a biocompatible material that can be used in thebone and teeth repair has been developed on preparation of thick film. CHA paste was preparedby mixing precipitate of CHA with CaSO4 and polyethylene glycol (PEG) in 2-propanol assolvent. Paste was deposited on substrate to get thick films by screen printing method. X raydiffraction (XRD) analysis has shown hexagonal crystal structure and crystal size of CHAacquired 7,2 nm by Scherrer’s method. Fourier Transform Infrared (FTIR) analysis has shownabsorption spectra which indicating phosphate, carbonate, and hydroxide group. Size of thiscomposite particles analyzed by PSA (particle size analyzer) about 3μm and pore size was 0.44-0.49 nm obtained from BET analysis, increased with the addition of CaSO4 (0.44 to 0,49 nm).Rephrase PEG was found as an adhesive and homogenize paste on substrat surface. In addition,CHA paste also potentially can be used as bone cement.Keywords : Paste, thick film, carbonated hydroxyapatite

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