Materials Literature
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A dual-phase ceramic membrane consisting of gadolinium-doped ceria (GDC) as an oxygen ion conducting phase and MnCo 2 O 4 as an electron conducting phase was fabricated by sintering a GDC and MnCo 2 O 4 powder mixture. The MnCo 2 O 4 was found to maintain its spinel structure at temperatures lower than 1200 o C. (Mn,C…
Studies were conducted on the effects of filler loading and 3-aminopropyltriethoxysilane (SCA) on the physical characteristics of epoxidized natural rubber (ENR)-alumina nanoparticles composites (ENRAN). The filler loading varied from 10, 20, 30, 40, 50, and 60 phr in the absence and presence of 2 phr SCA in every for…
Optical fibres have received considerable attention as high-density sensor arrays suitable for both in vitro and in vivo measurements of biomolecules and biological processes in living organisms and/or nano-environments. The fibre surface was chemically modified by exposure to a selective etchant that preferentially e…
Development of nanosized materials to enhance the image contrast between the normal and diseased tissue and/or to indicate the status of organ functions or blood flow is essential in nuclear magnetic resonance imaging (MRI). Here we describe a contrast agent based on a new iron oxide design (superparamagnetic iron oxi…
The effects of Cu-addition and die-upset temperature on the texture in the die-upset Nd-lean <TEX>$Nd_xFe_{93.5-(x+y)}-Cu_yGa_{0.5}B_6$</TEX> (x = 9-12, y = 0-2) alloys were investigated. The die-upset Cu-containing Nd-lean <TEX>$Nd_{12}Fe_{81.5-y}-Cu_yGa_{0.5}B_6$</TEX> (y = 1, 2) alloys showed a considerable texture…
초록 · 키워드 목차 오류제보하기 등록된 정보가 없습니다. #coupling agent #Multi-walled carbon nanotube #MWCNT #SBR #styrene butadiene rubber 등록된 정보가 없습니다.
Abstract Due to large exciton binding energy, ZnO/ZnMgO heterostructures are promising for modern optoelectronic devices in UV range. We report on the metal‐organic vapor phase epitaxy (MOVPE) growth of ZnO, ZnMgO layers and periodic ZnO/ZnMgO MQW structures at atmospheric pressure of hydrogen using diethylzinc (DEZ),…
Abstract The phase formation in the cadmium‐rich section of the ternary system Na/K/Cd was explored by syntheses from the elements. The crystal structures of the compounds in the region of Cd:(Na/K) ratios around 1:5 to 1:6, comprising the known binary compounds Na 2 Cd 11 and K 3 Cd 16 as well as ternary cadmides of…
Carbon/carbon composites were infiltrated by isobaric, isothermal chemical vapor infiltration using propane as the carbon source. Effects of heat-treatment temperature up to 2500 degrees C on the microstructure and the mechanical properties of pyrocarbon and carbon/carbon composites were investigated by X-ray diffract…
Abstract Tubular ZnO nanostructures have been obtained via a hydrothermal method at low temperature (90 °C) without any catalysts or templates. The XRD measurement reveals that the tubes are single crystals with hexagonal wurtzite structure. SEM shows that the diameters of ZnO nanotubes ranged from 400 to 550 nm. The…
Polyacrylamide (PAAm) brushes, covalently grafted from silicon wafer surfaces were examined for their ability to inhibit microbial adhesion after long-term exposure to PBS or reconstituted freeze-dried saliva for time intervals from 48 h up to 1 month at 37 degrees C. Microbial adhesion after exposure was studied in a…
We describe a promising approach to the processing of micro-optical components, where CO(2) laser irradiation in raster scan is used to generate localized surface melting of binary or multilevel structures on silica, fabricated by conventional reactive-ion etching. The technique is shown to provide well-controlled loc…
The semiempirical PM3 method with dispersive corrections (PM3-D) is used to predict the interaction energy of a number of aromatic pollutants with a graphene surface and with carbon nanotubes. It is found that the dispersive interactions are dominant in determining the magnitude of the interaction and that electron tr…
A new synthesis of cyclotrisazobenzene with different substituents was developed with yields of up to 30%. Solid-state structures of cyclotrisazobenzene as well as the tert-butyl derivative were obtained. Also, the photochromic properties and the complexation behaviour with alkali metal ions of this class of molecules…
Polycrystalline Sr 2 MnTiO 6−δ (SMTO) nanosized powders have been prepared by the liquid mix technique. Thermogravimetric experiments show the presence of small amounts (4%) of Mn 3+ in the sample. A systematic structural study shows the stabilization of nanocrystals of about 50 nm, which crystallize in an space group…
The classical model for porous electrodes reported by De Levie several decades ago (and expanded upon since then) was developed mainly to describe pores with micrometer-scale diameters. Presumably it will break down as pore diameters approach atomic dimensions. Mesoporous gold formed by dealloying is a valuable test p…
Pressure drop across filter materials is critical for the effective performance of various kinds of filtering system. To evaluate the feasibility of lowering the pressure drop of porous sintered reaction‐bonded silicon nitrides, permeability tests were conducted for specimens with different porosity and pore structure…
Long persistent afterglow phosphor, Ba4Al14O25:Eu2+,Dy3+ was prepared at high temperature by a solid state reaction in a weak reductive atmosphere. The crystal structure of Ba4Al14O25:Eu2+,Dy3+ has been determined as an orthorhombic Pmmm space group with a=18.200(6) Å, b=16.923(6) Å, c=5.131(21) Å, V=1580.3(9) Å3 and…
Abstract A water‐reducible alkyd resin was synthesized using the renewable resource canola oil and then chemically modified with styrene and the novel monomer acrylamido tertiary butane sulfonic acid (ATBS). Infrared spectroscopy and nuclear magnetic resonance techniques were used for structural elucidation of newly s…
Nanoparticles (NPs) play an increasingly important role in the fabrication of functional advanced materials. Two major steps need to be carried out in order to achieve control of the material properties. First of all, the properties of the single NPs have to be under control, especially in relation to colloidal stabil…