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one - step fabrication of a polyaniline nanofiber vapor sensor

one - step fabrication of a polyaniline nanofiber vapor sensor

one - step fabrication of a polyaniline nanofiber vapor sensor

... polymernanofibers. A small amount of an aqueous solution containing aniline, a dopant, and an oxidant was placedon an interdigitated electrode array. Ultraviolet (UV)-irradiation of the solutions affected ... Sensors and Actuators B 134 (2008) 31–35Contents lists available at ScienceDirectSensors and Actuators B: Chemicaljournal homepage: www.elsevier.com/locate/snb One- step fabrication of a polyaniline ... 2008Accepted 2 April 20 08Available online 16 April 2008Keywords: Polyaniline NanofibersSensorsNanomaterialsabstract A single -step, bottom-up technique has been used to fabricate sensors, based...
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Fabrication of a porous polyimide membrane using a silicon nanowire array as a template

Fabrication of a porous polyimide membrane using a silicon nanowire array as a template

... Fabrication of a porous polyimide membrane using a silicon nanowire arrayas a templateWoong Kim⁎, Myung-Ki LeeDepartment of Materials Science and Engineering, Korea University, ... environmentally hazardous materials, and as in-sulating materials with low dielectric constants [1–4]. It has also beenrecently demonstrated that porous polymer membranes can be usedas templates ... vertically to the substrate. An SEM image of an angledview of the vertically aligned silicon nanowires is shown in Fig. 1a. Since nanowires grow via a vapor liquid solid (VLS) mechanism, goldnanoparticles...
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effects of dimensions on the sensitivity of a conducting polymer microwire sensor

effects of dimensions on the sensitivity of a conducting polymer microwire sensor

... of these five types of sensors.6. Statistical analysis of sensing dataBased on the method of least square [27], a statistical programSAS has been run to fit the data points for further analyzing thesensing ... the ratio between the mass of methanol and that of air inside the test chamber. The sameapplied to acetone. The concentrations of methanol vapor rangedfrom 1.3 to 6.4 ppt. This range of methanol ... widths. A microsensor may also have a rectangular shape, i.e.,the length is about the same as the width. If the length is large, thecorresponding surface-to-volume ratio is larger than that of a microwire...
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sensitivity properties of a novel no2 gas sensor based on mesoporous wo3 thin film

sensitivity properties of a novel no2 gas sensor based on mesoporous wo3 thin film

... Hon a, ∗ a Department of Materials Science and Engineering, National Cheng Kung University, 1 Ta-Hsueh Road, Tainan 70101, Taiwan, ROCbNational Nano Device Laboratories, 100 1-1 Ta-Hsueh Road, Hsinchu ... film to detect smallconcentration of NO2at low operating temperatures.Li and Kawi [13] have shown that a linear relationshipwas found between the surface areas of SnO2sensors andtheir sensitivities ... characteristics wasexamined several times in a week. It was found that theinitial resistance was approximately maintained, but with a slightly increased resistance at saturation. For example,the...
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Design, fabrication, and characterization of a solenoidsystem to generate magnetic field for an ECR proton source

Design, fabrication, and characterization of a solenoidsystem to generate magnetic field for an ECR proton source

... iscapable of producing off-resonance, mirror, and flat magnetic field configurations. A mirrorratio of 1·1 and a maximum flat field of 1400 G has been obtained. The measured values andthe design values ... diffusion of the plasma particles to the wall of the plasma cham-ber. The measured magnetic field profiles along the axial distance for (a) mirror magneticfield, and (b) flat magnetic field are shown ... neutron spallation (France et al 1996; Lagniel et al 1997), and mate-rial science research (Schriber 1994; Tojyo et al 2002; Biri et al 2008). Standard softwarepackages like Poisson and Pandira (http://laacg1.lanl.gov),...
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Báo cáo khoa học: Proper targeting and activity of a nonfunctioning thyroid-stimulating hormone receptor (TSHr) combining an inactivating and activating TSHr mutation in one receptor pptx

Báo cáo khoa học: Proper targeting and activity of a nonfunctioning thyroid-stimulating hormone receptor (TSHr) combining an inactivating and activating TSHr mutation in one receptor pptx

... 995048,E-mail: mtonacchera@hotmail.comAbbreviations: bTSH, bovine TSH; FACS, fluorescence-activatedcell scanning; FSH, follicle stimulating hormone; Gq-alpha,G-protein q alpha; Gs-alpha, G-protein ... EIA,using a monoclonal antibody directed against the extracel-lular domain of the TSH receptor (NCL-TSH-R2, Novo-castra Laboratories Ltd, Newcastle, UK) (data not shown),and by FACS analysis ... and measured usingthe standard optics of the FACSort. TheCELLQUESTsoftware program (Becton Dickinson and Co.) was usedto acquire and analyze data. A minimum of at least 10 000cells was analyzed.Computation...
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Báo cáo khoa học: Three-step hydroxylation of vitamin D3 by a genetically engineered CYP105A1 doc

Báo cáo khoa học: Three-step hydroxylation of vitamin D3 by a genetically engineered CYP105A1 doc

... Kurokawa, Imizu, Toyama, JapanFax: +81 766 56 2498Tel: +81 766 56 7500E-mail: tsakaki@pu-toyama.ac.jpDatabaseStructural data are available in the ProteinData Bank database under the accessionnumbers ... containing R73V ⁄ R8 4A and FDX1 genes, withHindIII and PstI restriction sites, was prepared using theprimers 5¢-ACCAAGCTTATGAAAAGATACCGCCAC-GACG-3¢ and 5 ¢-TTCTGCAGTCACCAGGTGACCGG-GAGTTCG- ... Miyazaki A, Saito M, Adachi T, Mizoue K,Hanada K & Omura S (1992) Transformation of vita-min D3 to 1 alpha,25-dihydroxyvitamin D3 via25-hydroxyvitamin D3 using Amycolata sp. strains.Appl...
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One dimensional organic nanostructures a novel approach based on the selective adsorption of organic molecules on silicon nanowires

One dimensional organic nanostructures a novel approach based on the selective adsorption of organic molecules on silicon nanowires

... tris{2,5-bis(3,5-bis-trifluoro-methyl-phenyhl)-thieno}[3,4-b,h,n ]-1 ,4,5,8,9,12-hexaazatriphenyl-ene (THAP) and 9,10-phenanthrenequinone (PQ). The results are a non-selective adsorption of THAP across ... SiNWs/Ag(110) surface by thermal evaporation ($480 K) from a quartzcrucible at a rate of 0.5 Å/min. Deposition rate and thickness wereestimated using a calibrated quartz crystal microbalance. ... of Fig. 2), sug-gest that the SiNWs present a metallic character. This supports theobservation made by Leandri et al. based on a detailed analysis of the Si2p core levels and valence band of...
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hydrothermal synthesis and crystal structure of a novel one - dimensional tritungstate

hydrothermal synthesis and crystal structure of a novel one - dimensional tritungstate

... molecular electronics, optical ma-wxterials and ceramics 1–4 . A promising synthetic routetakes advantage of a low-temperature soft approach, hy-drothermal method, and the structure-directing ... 379–382380Ž.wxFig. 1. Packing view of C H N W O 1 along the b-axis.2102 3102.4. X-ray Crystallographic StudiesX-ray crystallographic data of 1 were collected on a Siemens P4 diffractometer. Crystal data: monoclinic() ... few neworganicrinorganic hybrid phases are obtained and struc-turally identified using the single crystal X-ray diffractionmethod. Brief crystal data of one of the phases, a mono-4yŽ.wxFig....
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The Design and Implementation of a Log-Structured File System

The Design and Implementation of a Log-Structured File System

... log as the most up to date ‘‘truth’’ aboutthe state of the data on disk. The main difference is thatdatabase systems do not use the log as the final repositoryfor data: a separate data area is ... produce a particular overall diskcapacity utilization. At each step, the simulator overwrites one of the files with new data, using one of two pseudo-random access patterns:Uniform Each file has ... described here was supported in part by the Na-tional Science Foundation under grant CCR-8900029, and in partby the National Aeronautics and Space Administration and theDefense Advanced Research Projects...
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