wet process-based fabrication of wo3 thin film for no2 detection

Tài liệu Báo cáo " Survey of WO3 thin film structure built on ito/glass substrates by the Raman and xrd spectroscopies" doc

... the Raman and XRD spectrograms of WO3 films. Keywords: WO3 structure, WO3 /ITO/glass, Raman spectroscopy. 1. Introduction WO3 thin films have been studied for along time due to their unique ... and because of the heteroepitaxial growth of films WO3 in which the parameters of plane ITO (440) are slightly larger than the ones of WO3 planes. The relation between shifts of XRD peaks ... size of WO3 film were determined by Scherrer equation and all of them valued in 30 nm to 35 nm. 3.2. Micro – Raman Studies Due to structural modifications of WO3 films, deposited on of ITO...

Báo cáo khoa học: Use of biomolecular templates for the fabrication of metal nanowires ppt

... semiconductive wires areformed. The application of these wires was recentlydemonstrated for the fabrication of electrodes for thin lithium-ion batteries [38]. The binding of gold to theviruses ... use of cytoskeletal proteins for nanotech-nology was the utilization of actin filaments as tem-plates for nanowire formation [26]. Briefly, 7-nm actinfilaments were formed by self-assembly of ... of peptide nanostructures to formconductive nanowiresAnother key research direction for the fabrication of biological fibrils involves the use of peptide andhybrid–peptide building blocks for...

Fabrication and application of silicon nanowire transistor arrays for biomolecular detection

... method for detection of DNA [10] and of cellular adhesion [11] can also beused with our new SiNW-FET devices.3.3. Electronic detection of biomoleculesIn Fig. 7 the potentiometric detection of ... of DNA we recordeda very large shift of the ﬂat band voltage of 250 mV. For biotin asmaller, but still large shift of 33 mV was measured.With this device platform and this protocol for biofunctionaliza-tion ... hybridization detection [2–4], virus detection [5], and even for extracellular recording from electrogeniccells [6]. For real biosensor applications, the reliability of the devicesand the reduction of...

ag doped wo3-based powder sensor for the detection of no gas in air

... values (TLV) for NO2and NOare 3 and 25 ppm, respectively [5]. Therefore, a NOxsensorrequires high sensitivity for detecting low concentration of gases. Another enormous driving force for developing ... to monitorthe concentration of NO and NO2gases because of the lowconcentration, one of the roles of the Ag is apparent toprovide surface for the conversion of NO to NO2accordingto the ... sensorarray for the detection of NOxand NH3, Sens. Actuators, B, Chem.77 (2001) 100±110.[5] M. Penza, C. Martucci, G. Cassano, NOxgas sensing characteristics of WO3 thin films activated...

gas sensing properties of metal - organics derived pt dispersed - tio2 thin film fired in nh3

... 1.122 2phase of the thin film fired at 4508C were compared withthose at 5008C. Both thin films consisted of only anatasephase and showed almost the same XRD profiles, grainsize of TiO and pore ... the resistance of the TiO –Pt film was32compared with that of the TiO film. Although the resis-2tance of 1H is smaller than that of 2H, the resistance of 1ais larger than that of 2a. It turns ... adsorption of oxygen doesnot occur in this film. Characterization was performed for the films fired inNH , 3% H rAr or Ar. No difference was observed as to32the microstructure of thin film, namely,...

gas sensing properties of wo3 doped rutile tio2 thick film at high operating temperature

... 0) peak of undoped TiO2, 11 wt.% WO3doped TiO2and15 wt.% WO3doped TiO2.Fig. 5. The results of NO2(500 ppm) detection at 600 °C.Fig. 6. The results of CO, O2and CO2 detection ... properties of the sensing ﬁlm were affected by theWO3doping. Fig. 3 revealed that the sensing ﬁlms consisted of al-most a single phase of rutile TiO2, while Fig. 4 revealed the (1 1 0)peak of ... oxidizing gases) with CO, O2and CO2concen-trations of 1000 ppm, 15% and 10%, respectively. The detection re-sults of the fabricated sensor for the various oxidizing gases andthe gas mixture...

growth of monoclinic wo3 nanowire array for highly

... factor for theformation of different nanostructures, which is influenced bysource materials temperature, tube pressure, gas flow rate, etc.29Therefore, a series of experiments were performed ... with thelength of about 3–5 mm as shown in the top view of Fig. 1(a) andcross-sectional view of Fig. 1(b), respectively. In fact, the nano-wire array grows out from a thin layer of tungsten oxide ... wassuccessfully synthesized under a pressure of 13–15 Torr with anair flow of 200 sccm at a temperature of 1000C. Fig. 1 showstypical FESEM images of an as-synthesized nanowire arraygrown on...

improved electrochromical properties of sol–gel wo3 thin films by doping

... the Research Council of Sharif University of Technology for the ﬁnancial support of the project. The partialsupport of the High Technology Organization (HTO) of the Ministry of Industries and Mines ... K.D. Lee, Thin Solid Films 302 (1997) 84.[24] M. Ohring, Materials Science of Thin Films, Academic Press, New York, 2002, p. 510.[25] C.F. Bohren, D.R. Huffman, Absorption and Scattering of Light ... P.P. Lottici, Thin Solid Films 516 (2008) 4128.7N. Naseri et al. / Thin Solid Films xxx (2009) xxx–xxxARTICLE IN PRESSPlease cite this article as: N. Naseri, et al., Thin Solid Films (2009),...

influence of polymerization temperature on nh3 response of pani tio2 thin film gas sensor

... of human being and its habitation envi-ronment, and a large volume of research has been focused onthe development and fabrication of gas sensors for detection of gaseous chemicals. Choice of ... YingState Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information,University of Electronic Science and Technology of China (UESTC), Chengdu 610054, PR ... microelectronics for the detection system is thekey step in such efforts [1]. At present, the nanocomposite of conducting polymer/metal oxide for gas-sensing applicationhas attracted a lot of attention,...

Báo cáo y học: "Enhancement of the Click Chemistry for the Inverse Diels Alder Technology by Functionalization of Amide-Based Monomers"

... chloride was suspended in 50 ml chloroform, cooled to 0°C and a mixture of 2.2 mmol dansyl derivative [19] and 2 mmol N-ethyl-diisoproylamine in 20 ml chloroform were slowly added by a dripping ... Wat-son-Crick hydrogen-bond formation [9-14]. The func-tionalization of the “PNA” like amide backbone with imaging molecules suggests a new class of efficient tools suitable for Molecular Imaging ... intracellular contrast agents (CA) dedicated for imaging of cellular metabolic processes, combined with image-guided therapeutic approaches. For the development of modern drugs, a very efficient ligation...

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