tio2 nanowires array fabrication and gas sensing properties

... www.sciencedirect.com Sensors and Actuators B 130 (2008) 70–76 TiO 2 nanowires array fabrication and gas sensing properties L. Francioso ∗ , A.M. Taurino, A. Forleo, P. Siciliano CNR-IMM Institute for Microelectronics and ... 2007 Abstract A cheap nanofabrication process for titania (TiO 2 ) polycrystalline nanowire array for gas sensing applications with lateral size...

Ngày tải lên: 20/03/2014, 13:11

... concentration of NO x gas [6]. However, most reports focused on the NO x gas sensors, and the study of sensing to other gases was rare. In this paper, we have investigated the electrical and gas- sensing characteristics ... 0.6±0.8 mm. 2.4. Measurement of sensing properties The gas- sensing properties were examined in a chamber through which air or a sample gas (petrol...

Ngày tải lên: 19/03/2014, 16:48

... distinct bands at 270, 327, 712, and 807 cm −1 except for the lattice mode band below 200 cm −1 and a small instrumental artifact around 520 cm −1 . The four bands fall very 300 Y.S. Kim / Sensors and ... M. Antonietti, M. Niederberger, Template-free synthesis and assembly of single-crystalline tungsten oxide nanowires and their gas- sensing properties, Angew. Chem. Int. Ed. 4...

Ngày tải lên: 20/03/2014, 13:11

... 4508C showed the highest gas sensitivity and selectivity to H . However, 2 2 the film fired at 6008C showed no sensitivity to reducing gases. In contrast, high gas sensitivity and selectivity to H ... Hayakawa et al.rSensors and Actuators B 67 2000 270–274 271 Fig. 1. Change of gas sensitivity with firing temperature. This paper described the effect of NH on gas sensing 3 pro...

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... three other individual oxidizing gases, CO, O 2 and CO 2 , at 600 °C, and a gas mixture (NO 2 + oxidizing gases) with CO, O 2 and CO 2 concen- trations of 1000 ppm, 15% and 10%, respectively. The detection ... of the fabricated sensor were studied, while its gas sensing properties were investigated by detecting NO 2 and other oxidizing gases (CO, O 2 and CO 2 ) at high ope...

Ngày tải lên: 19/03/2014, 16:48

... and out of the gas molecules. To study the effect of MWCNTs doping on the sensing proper- ties to ethanol gas and LPG, we plotted the response of undoped SnO 2 sensor to 250 ppm ethanol gas and ... press as: N. Van Hieu, et al., Gas- sensing properties of tin oxide doped with metal oxides and carbon nanotubes: A competitive sensor for ethanol and liquid petroleum gas,...

Ngày tải lên: 19/03/2014, 16:48

... Pages 5 Sensors and Actuators B xxx (2010) xxx–xxx Contents lists available at ScienceDirect Sensors and Actuators B: Chemical journal homepage: www.elsevier.com/locate/snb Gas sensing properties ... calcinations are in the range of 30–150 nm. The gas sensing properties of these powders in the form of thick film were investigated with and without platinum doping. Gas respon...

Ngày tải lên: 19/03/2014, 16:48

... (1.5, 3.0 and 5.0wt.%). The gas sensing properties of the sensors to nitrogen dioxide, carbon monoxide, ammonia and ethanol were investigated. It was observed that the pure nanoparticle WO 3 sensing layers ... August 2005 Abstract The gas sensing properties of pure and indium-doped nanoparticle WO 3 thick films were studied. Sensors were prepared using commercial WO 3 nanop...

Ngày tải lên: 19/03/2014, 16:48

... materials, and gas sensors [1–3].In particular, when the shells of hollow spheres are thin and nano- porous, the gas can diffuse toward the entire sensing surface, which enhances the gas sensing ... surface area and large pore volume. 3.4. Gas sensing characteristics As stated above, the gas responses of the R5 and R0.5 powders were negligible. Thus, the gas response...

Ngày tải lên: 19/03/2014, 16:48

... species and make them excellent candidates for gas sensing applications [34,35]. The gas sensing performance X. Shen et al. / Sensors and Actuators B 143 (2009) 325–332 329 Fig. 4. TEM and HRTEM ... nanorod arrays and commercial WO 3 powders. (b) Sensing responses vs. gas concentrations of various gases, including 1-butanol, acetone, toluene, 2-propanol, acetic acid, ethan...

Ngày tải lên: 20/03/2014, 13:04