Materials Literature
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The synthesis of a new compound, 10-(4-aminophenyl)-5,15-dimesitylcorrole, and its application for the preparation of optical chemical pH sensors is described. The dye materials were immobilized in a sol-gel glass matrix and characterised upon exposure to aqueous buffer solutions. The response of the sensor is based o…
Electrospinning has become a versatile tool for fabricating nanofibers from materials of diverse origins. Normally, mats of randomly-aligned fibers were obtained. A number of techniques have been proposed to arrive at uniaxially-aligned fibers. This work reports a new technique, i.e., dual vertical wire technique, for…
We report the optical properties and morphological structure of potential green phosphors ( , ) for application in phosphor-converted three-band white light emitting diodes (LEDs). A series of phosphors was synthesized using NaBr-aided solid-state reactions in a flowing stream. They all crystallized with the orthorhom…
Sb 2 O 3 nanoparticles, nanowires, and nanoribbons have been selectively synthesized in a controlled manner under mild conditions by using CTAB as a soft template. By adopting as an inorganic precursor and the concentration of CTAB as an adjusting parameter, morphologies of Sb 2 O 3 nanostructures can be selectively c…
AIM: The aim of this study was to determine the effect of short fiber volume fraction and fiber length on some mechanical properties of short fiber-reinforced composite (FRC). METHODS AND MATERIALS: Test specimens (2 x 2 x 25 mm3) and (9.5 x 5.5 x 3 mm3) were made from short random FRC and prepared with different fibe…
Four new cyano-bridged [MnIIMIIIMnII] heterotrinuclear complexes (MIII = Cr, Fe, Co) have been synthesized and crystallographically characterized: {[(H2O)L1Mn–NC–Cr(CN)4–CN–MnL1(H2O)]}3[Cr(CN)6]·10H2O 1, [(H2O)L2Mn–NC–M(CN)4–CN–MnL2(NCS)]·2H2O 2, [(H2O)L2Mn–NC–Fe(CN)4–CN–MnL2(H2O)](NCS)·1.5H2O 3, and [(H2O)L2Mn–NC–Co(…
Cd(OH)2 nanorings were successfully fabricated from Cd(OH)2 nanoplates by ultrasonic chiselling, a unique effect of the sonochemical process that has never been reported before.
Development of sulfur-resistant anode materials for solid oxide fuel cells ͑SOFCs͒ is critical to cost reduction of SOFC technologies.In this paper, we report the thermodynamic stability of various candidate materials for sulfur-resistant anodes of SOFCs, including metal carbides, borides, nitrides, silicides, perovsk…
This paper investigates the relationship between mechanical properties and microstructure in high pressure die cast binary Mg-Al alloys. As-cast test bars produced using high pressure die casting have been tested in tension in order to determine the properties for castings produced using this technique. It has been sh…
Research Article| January 01, 2006 Chemical Bonding in Sulfide Minerals David J. Vaughan; David J. Vaughan School of Earth Atmospheric and Environmental Sciences and Williamson Research Centre for Molecular Environmental Science University of Manchester Manchester, United Kingdom, e-mail: david.vaughan@manchester.ac.u…
The electrospinning method is employed to prepare a fibrous TiO2-SiO2 (Ti : Si = 1 : 2) nanocomposite photocatalyst, in which Degussa P25 T i O2 nanoparticles are embedded inthe body of SiO2 fibers and which shows good photocatalytic activity due to its 3-D open structure, as evidenced by photocatalytic reduction of s…
Hydrogen entry into high strength steel has been investigated by hydrogen permeation measurements under wet-dry cyclic environments. Dominant environmental factors that control hydrogen entry were temperature, relative humidity, and the amount of sea salt on the steel surface. Corrosion rate increased with an increase…
Photo-excited xanthone is known to undergo ultrafast intersystem crossing (ISC) in the 1 ps time domain. Correspondingly, its fluorescence quantum yield in most solvents is very small ( approximately 10(-4)). Surprisingly, the quantum yield in water is 100 times larger, while ISC is still rapid ( approximately 1 ps),…
Recently, ordered chiral mesoporous silica with a twisted hexagonal rod-like morphology and hexagonally ordered chiral channels has been synthesized by using chiral anionic surfactants as a liquid crystal template (S. Che, Z. Liu, T. Ohsuna, K. Sakamoto, O. Terasaki and T. Tatsumi, Nature, 2004, 429, 281). In this wor…
Daniel J. Henderson, Alexandre Olbrecht and Solomon W. Polachek
A novel Pillar phase change memory based on fully integrated test arrays in 180nm CMOS technology has been successfully fabricated. A current-confining Pillar structure leads to a self-heating at the center of the chalcogenide layer, and needs only one additional mask level for its fabrication. Switching characteristi…
Thin-film libraries of libraries ( ; ) have been prepared by combinatorial sputter deposition. The libraries were subsequently annealed at 700, 800, and to induce structural and compositional changes. Respectable catalytic activity was achieved with libraries having and that were annealed at . This is explained in ter…
Hydroxyl functional poly(amidoamine) dendron wedges have been reacted with the surface of multi-walled carbon nanotubes and used for templating silver nanoparticles.
The new, monometal substituted silicotungstates [Mn(H(2)O)(2)(gamma-SiW(10)O(35))(2)](10-) (1), [Co(H(2)O)(2)(gamma-SiW(10)O(35))(2)](10-) (2) and [Ni(H(2)O)(2)(gamma-SiW(10)O(35))(2)](10-) (3) have been synthesized and isolated as the potassium salts K(10)[Mn(H(2)O)(2)(gamma-SiW(10)O(35))(2)] x 8.25 H(2)O (K-1), K(10…
The objective of this study was to characterize and evaluate the physicochemical properties and drug release profiles of hydrogels composed of silk protein (SP) polymers. SPs with a low MW (SPL, ca. 18 kDa) and a high MW (SPH, ca. 76 kDa) were used for preparing hydrogels. Both the random coil form and beta-sheet conf…