Materials Literature
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Dilithium 2,6-naphthalene di-carboxylate has been synthesized starting from the acid and lithium hydroxide using a freeze drying process which gives rise to superior electrochemical performances. This negative electrode material reacts reversibly with Li + at a redox potential of ca. 0.88 V, and exhibits not only a to…
In this study, we describe the formation of ZnO nanolayers inside the air capillaries of a silica photonic crystal fibre (PCF), targeting random laser and organic vapor sensing applications. ZnO nanolayers were developed by infiltrating the capillaries of the silica PCF with Zn-acetate/methanol solutions of various co…
Several proposed applications and exotic effects in topological insulators rely on the presence of helical Dirac states at the interface between a topological and a normal insulator. In the present work, we have used low-energy angle-resolved photoelectron spectroscopy to uncover and characterize the interface states…
We study the stability and roughness of propagating cracks in heterogeneous brittle two-dimensional elastic materials. We begin by deriving an equation of motion describing the dynamics of such a crack in the framework of Linear Elastic Fracture Mechanics, based on the Griffith criterion and the Principle of Local Sym…
In the present work, cesium iodide (CsI) thin films of different thickness have been prepared by thermal evaporation technique. The crystallite size and grain size of these films are compared by using X-ray diffraction (XRD) profile analysis as well as by transmission electron microscopy (TEM) counting, respectively.…
We perform optical, surface anchoring, and textural studies of an organo-siloxane tetrapode material in the broad temperature range of the nematic phase. The optical, structural, and topological features are compatible with the uniaxial nematic order rather than with the biaxial nematic order, in the entire nematic te…
A facile one-step strategy has been developed to prepare 3D graphene/VO2 nanobelt composite hydrogels, which can be readily scaled-up for mass production by using commercial V2O5 and graphene oxide as precursors. During the formation of the graphene/VO2 architecture, 1D VO2 nanobelts and 2D flexible graphene sheets ar…
Novel CoFe2O4 hollow sphere/graphene composites were synthesized by a facile vapor diffusion method in combination with calcination at 550 °C. The structure and morphology of as-prepared hybrid materials were characterized by electron microscopy, X-ray diffractometry, Fourier transform infrared spectroscopy, X-ray pho…
The effect of WO 3 doping on microstructural and electrical properties of ZnO-Pr 6 O 11 based varistor materials was investigated. The doped WO 3 plays a role of inhibitor in ZnO grain growth, resulting in decreased average grain size from 2.68 to 1.68 μm with increasing doping level of WO 3 from 0 to 0.5 mol%. When t…
Magnesium-aluminium hydrogenphosphate layered double hydroxide that synthesized by used of co-precipitation and followed by hydrothermal (MAHP4) method was used as an adsorbent to remove copper ions from aqueous solutions. The effects of various optimization parameters such as contact time, adsorbent dosage and lead i…
The present work examines the pre-indented crack propagation in ZrB 2 -SiC-AlN ceramics subjected to thermal shock under different temperature differences. A cohesive force model is applied according to the shape and characteristics of the crack in the indentation - quenching experiments. A dimensionless parameter is…
Graft copolymer of styrene on natural rubber was prepared in laboratory by emulsion polymerization using potassium persulfate and sodium laurysulfate as an initiator and an emulsifier, respectively. The concentrations of initiator and emulsifier were varied in the range of 0.7 to 2.0 parts and 5.0 to 11.0 part per 100…
Nanoparticle assemblies are derived from poly[3-hexylthiophene] (P3HT) nanoparticles that are stabilized by sodium dodecylsulfate, between two electrodes, showing efficent hole transport in time-of-flight mobility measurements. The charge-carrier mobility from various P3HT-based nanoparticle assemblies are found by Dh…
In this paper, modified atmosphere packaging (MAP) film of fruit and vegetable was prepared through extrusion blow molding process.The LDPE was used as matrix resin and medical stone powder as the main filler. Stearic acid was added into film as a kind of surfactant. Effect of particle size, stearic acid proportion,fi…
A new hydrated rare earth borate K2O·CaO·4B2O3·12H2O:Ce3+ has been synthesised by water solution method. The product is characterised by the XRD, IR, TG-DSC and SEM respectively and it is indicated that one single crystal has been obtained via spontaneous crystallisation. Under UV excitation, the luminescent property…
A mathematical model is developed to describe the heat regime of a reversing cold-rolling mill that takes into account the substantial differences between the heat processes occurring in reversing and continuous mills. Model and heat balance equations are used to calculate the strip temperature in passes and the tempe…
The preparation of the BaZr 0.8 Y 0.2 O 3 -δ solid electrolyte obtained by a nitrate-citrate combustion is reported. This synthesis method is compared with solid state reaction. The phase formation process was studied using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The phase evoluti…
Natural rubber latex grafted with poly(diacetone acrylamide), NR- g -PDAAM, was prepared with different weight ratios of NR/DAAM (i.e., 90/10, 95/5, and 97.5/2.5) by seeded emulsion polymerization at 50°C. The redox-initiation system, cumene hydroperoxide (CHP) and tetraethylene pentamine (TEPA), was used to initiate…
Heterostructures consisting of ZnO and diamond appear to have an elusive nature. A rectifying behaviour was previously observed only for heterojunctions with very lightly doped p -type diamond using residual boron gas during the chemical vapour deposition process or type IIb diamond. Other studies, however, claimed to…
Abstract The microstructures, martensitic transformation, mechanical and shape memory properties of (Ni 53 Mn 22 Co 6 Ga 19 ) 100–x Y x ( x = 0, 0.1, 0.3) high-temperature shape memory alloys were investigated. It was found that small Y addition results in the refinement of grain size and the increase of γ phase volum…