Fabrication and Sensing Behavior of NASICON Thick Film SO<sub>2</sub> Gas Sensor by Screen-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.

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Electric properties of textured (K0.44Na0.52Li0.04)(Nb0.86Ta0.10Sb0.04)O3 thick film prepared by screen printing method

Bulletin of Materials Science ◽

10.1007/s12034-016-1226-7 ◽

2016 ◽

Vol 39 (4) ◽

pp. 1133-1138

Author(s):

FANG FU ◽

JIWEI ZHAI ◽

ZHENGKUI XU

Keyword(s):

Thick Film ◽

Screen Printing ◽

Electric Properties ◽

Screen Printing Method ◽

Printing Method

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Nanocrystalline Tin Oxide Thick-Film Gas Sensor for H2S Detection

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.368-372.521 ◽

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.

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Structural and Electrical Properties of Lead Zirconate Titanate Thick Films Fabricated by Screen-Printing Method

Materials Science Forum ◽

10.4028/www.scientific.net/msf.544-545.633 ◽

2007 ◽

Vol 544-545 ◽

pp. 633-636

Author(s):

Sung Gap Lee ◽

Sang Man Park

Keyword(s):

Electrical Properties ◽

Thick Film ◽

Screen Printing ◽

Thick Films ◽

Sol Gel ◽

Precursor Solution ◽

Screen Printing Method ◽

Gel Method ◽

Structural And Electrical Properties ◽

Printing Method

Ferroelectric Pb(Zr0.6Ti0.4)O3 (PZT(60/40)) powder was prepared by a sol-gel method and PZT thick films were fabricated by the screen-printing method on the alumina substrates. The Pt bottom electrodes were screen-printed on the alumina substrate. The PZT(60/40) thick films were annealed at 1050°C for 10min in PbO atmosphere. Pb(Zr0.4Ti0.6)O3 (PZT(40/60)) precursor solution, which prepared by sol-gel method, was spin-coated on the PZT thick films to obtain a densification. These PZT multilayered thick films were annealed at 650°C for 2 h in PbO atmosphere. The upper electrodes were fabricated by screen printing the Ag paste and then firing at 590°C for 10min. Its structural and electrical properties of the PZT thick films with the treatment of PZT(40/60) precursor solution coating were investigated. The coating and drying procedure was repeated 4 times. And then the PZT(40/60) precursor solution was spin-coated on the multilayered thick films. A concentration of a coating solution was 1.5 mol/L and the number of coating was repeated from 0~15. The porosity of the thick films was decreased with increasing the number of coatings. All PZT multilayered thick films showed the XRD patterns of typical peroveskite polycrystalline structure. The relative dielectric constant of the PZT-15 (15: number of solution coatings) thick film were 370. And the PZT-15 thick film shows the remanent polarization of 23.5 μC/cm2 and coercive field of 18.0 kV/cm, respectively.

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