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

... the Raman and XRD spectrograms of WO 3 films. Keywords: WO3 structure, WO3 /ITO/glass, Raman spectroscopy. 1. Introduction WO 3 thin films have been studied for along time due to their unique ... and because of the heteroepitaxial growth of films WO 3 in which the parameters of plane ITO (440) are slightly larger than the ones of WO 3 planes. The relation between s...

Ngày tải lên: 13/02/2014, 03:20

... semiconductive wires are formed. The application of these wires was recently demonstrated for the fabrication of electrodes for thin lithium-ion batteries [38]. The binding of gold to the viruses ... use of cytoskeletal proteins for nanotech- nology was the utilization of actin filaments as tem- plates for nanowire formation [26]. Briefly, 7-nm actin filaments were formed b...

Ngày tải lên: 16/03/2014, 12:20

... method for detection of DNA [10] and of cellular adhesion [11] can also be used with our new SiNW-FET devices. 3.3. Electronic detection of biomolecules In Fig. 7 the potentiometric detection of ... of DNA we recorded a very large shift of the flat band voltage of 250 mV. For biotin a smaller, but still large shift of 33 mV was measured. With this device platform and...

Ngày tải lên: 16/03/2014, 15:24

... values (TLV) for NO 2 and NO are 3 and 25 ppm, respectively [5]. Therefore, a NO x sensor requires high sensitivity for detecting low concentration of gases. Another enormous driving force for developing ... to monitor the concentration of NO and NO 2 gases because of the low concentration, one of the roles of the Ag is apparent to provide surface for the conversion of NO...

Ngày tải lên: 19/03/2014, 16:47

... 1.1 22 2 phase of the thin film fired at 4508C were compared with those at 5008C. Both thin films consisted of only anatase phase and showed almost the same XRD profiles, grain size of TiO and pore ... the resistance of the TiO –Pt film was 32 compared with that of the TiO film. Although the resis- 2 tance of 1H is smaller than that of 2H, the resistance of 1a is larg...

Ngày tải lên: 19/03/2014, 16:48

... 0) peak of undoped TiO 2 , 11 wt.% WO 3 doped TiO 2 and 15 wt.% WO 3 doped TiO 2 . Fig. 5. The results of NO 2 (500 ppm) detection at 600 °C. Fig. 6. The results of CO, O 2 and CO 2 detection ... properties of the sensing film were affected by the WO 3 doping. Fig. 3 revealed that the sensing films consisted of al- most a single phase of rutile TiO 2 , while Fig. 4 revealed the...

Ngày tải lên: 19/03/2014, 16:48

... factor for the formation of different nanostructures, which is influenced by source materials temperature, tube pressure, gas flow rate, etc. 29 Therefore, a series of experiments were performed ... with the length of about 3–5 mm as shown in the top view of Fig. 1(a) and cross-sectional view of Fig. 1(b), respectively. In fact, the nano- wire array grows out from a thin layer of...

Ngày tải lên: 19/03/2014, 16:48

... the Research Council of Sharif University of Technology for the financial support of the project. The partial support 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, Absorptio...

Ngày tải lên: 20/03/2014, 13:04

... of human being and its habitation envi- ronment, and a large volume of research has been focused on the development and fabrication of gas sensors for detection of gaseous chemicals. Choice of ... Ying State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China (U...

Ngày tải lên: 20/03/2014, 13:04

... 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 Mol...

Ngày tải lên: 25/10/2012, 11:00