Materials Literature
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Eu2 + and Tb3+ singly doped and co-doped NaBaPO4 phosphors were synthesized by solid state reaction. The structure character, photoluminescence properties and the lifetime were investigated. The emission spectra of NaBaPO4:Eu2+, Tb3+, Na+ phosphor show both broad blue emission band and sharp green emission peaks. The…
A boron emitter that is transferrable to mass production is compared to a phosphorus emitter of industrial standard and a phosphorus emitter with reduced phosphorus concentration, on the viewpoints of the doping profiles, emitter saturation current (J0E), and internal quantum efficiency at shorter wavelength (= blue I…
Beta-type Ti-29Nb-13Ta-4.6Zr(TNTZ), which is a recently developed biomedical titanium alloys, shows a relatively low Young's modulus of around 60 GPa when subjected to a solution treatment. However, our focus in this study was on the practical applications of TNTZ in vivo because its mechanical strength decreases with…
The content of the fine and ultrafine particles in the raw material results in difficulty of the separation, the loss of the valuable components and ecological contamination. Secondary using of the fine particles is impossible without their granulation. This problem has been solved by the agglomeration-in-liquid metho…
We present investigations on gasochromic color dyes as gas sensitive gate materials for field-effect transistor (FET) based gas sensors. Therefore the work function of two color dyes N’,N’,N,N-tetramethyl-p-phenylenediamine (TMPD) and bromphenolblue (BPB) were characterized using a Kelvin probe. TMPD is selective to N…
To improve the field emission properties of graphene-carbon nanotube composite, a defective model of graphene-carbon nanotube composite has been established in this study, for exploring the field emission properties of this composite, some efforts have been set on calculating binding energy, then energy level, local e…
Hollow nickel-silica spheres were synthesized by sol-gel method followed by in-situ activation in aqueous sodium borohydride (NaBH4) /ammonia borane (NH3BH3) solutions. The evolution of 38, 58, and 41 mL hydrogen was finished in about 125, 90, and 30 min from aqueous NaBH4/NH3BH3 solution in the presence of nickel-sil…
Nano-polycrystalline diamond is a binderless diamond synthesised by the direct conversion of graphite under high pressure and high temperature. This diamond has the same or higher hardness than synthesised monocrystalline diamond and is expected to be an effective material for cutting tools. In this study, the cutting…
Multi-scale modelling offers physical insights in the relationship between microstructure and properties of a material. The macroscopic anisotropic plastic flow may be accounted for by consideration of (a) the polycrystalline nature and (b) the anisotropic grain substructure. The latter contribution to anisotropy mani…
In paper describes a method of optimization the stress state of an elastic beam, subjected to the simultaneous action of the central application of concentrated force and bending moment. Optimization method based on solving the inverse problem of the theory of elasticity of inhomogeneous bodies, the essence of which i…
Lu4O(OH)9I·3H2O is a new member of the anion exchangeable lanthanide hydroxyanion family of materials which has been synthesised hydrothermally. Its structure comprises positively charged [Lu4O(OH)9(H2O)3](+) layers with exchangeable charge balancing iodide anions located in the interlayer gallery. It has been found t…
Adjusting the optoelectronic properties of conjugated copolymers by the introduction of ethynylene linkage.
MMI-based 90° hybrids are optimized with sidewall gratings acting as effective index medium, notably increasing the usable bandwidth. Optimum grating parameters are determined with eigenmode expansion and Floquet-Bloch theory.
Abstract Phenylboronic acid (PBA) based glucose‐responsive materials have attracted great interests in recent years for developing insulin delivery systems. It is desired to obtain PBA based materials that can response to glucose under physiological pH and understand the mechanism. By using 11B triple‐quantum magic‐an…
New pellet-type semi-solid hydrogen storage material exhibits a high-performance dehydrogenation with a high gravimetric capacity of 10.01 mat. wt%.
BiNbOx (BNO) thin films fabricated by a chemical solution deposition (CSD) under annealing conditions of 550°C and 20 min were found to exhibit an unprecedentedly high relative dielectric constant of 170, which is substantially greater than that of sputtered BNO films. Transmission electron microscopy analysis showed…
We propose the method of modeling, which provides a meromorphic continuation of the asymptotic polynomial solution of differential equations based on 2D Padé approximants in nonlinear shell theory. We represent calculations of displacements, stability and vibration of inhomogeneous loaded shells with developable surfa…
Introduction: Regenerative therapies using biomaterials require accurate information on interactions between the implanted material and the human body. To improve the process of bone regeneration it is necessary to obtain a better understanding of the influence of the surfaces on the early stages of osseointegration.…
Exploiting the ready cleavage of bulky amides in the presence of a simple nucleophile, a new monomer for step growth polymerisation has been realised. A range of novel polyesters and polyamides have been prepared under mild conditions that allow for efficient recycling and reuse of the amine by-product. The use of a L…
Distributive mixing plays an important role in polymer processing, especially for shear-sensitive materials. Many materials with very high filler contents or partly crosslinked materials show a rheological yield point, which makes mixing of such materials very difficult. Due to this fact it is very important to predic…