Materials Literature
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Nanotechnology has been described as a general purpose technology. It has already generated a range of inventions and innovations. Development of nanotechnology will provide clinical medicine with a range of new diagnostic and therapeutic opportunities such as medical imaging, medical diagnosis, drug delivery, and can…
ABSTRACT The study investigated the combined treatment of edible coatings and osmotic dehydration (OD) of pineapple samples. Pineapple samples were coated with 0.5% to 5.0% (w/v) sodium alginate solution by dipping for 60 s and 120 s and then dried at 50C for 10 and 40 min. OD in sucrose solution was carried out for c…
Flexoelectricity describes the physical phenomenon of the generation of electric polarization from mechanical strain gradient in solid insulators. In common dielectric materials, the flexoelectric coefficient is trivially small ~10 -10 C/m. In Ba(Sr,Ti)O 3 (BST) ceramics, flexoelectric coefficient up to 10 -4 C/m was…
Abstract Summary: In this work, backbiting and beta‐scission reactions are investigated through Quantum Chemistry methods by adopting the Becke 3 parameters and Lee Yang Parr functional (B3LYP) and 6‐31G(d,p) basis set. Namely, the 1:3, 1:5 and 1:7 backbiting reactions are studied for acrylonitrile polymerization. It…
Vanadium dioxide (VO2) thin films were grown on silicon microcantilevers and companion test substrates by pulsed laser deposition followed by in situ annealing in an oxidizing atmosphere, with annealing times used to control crystallite sizes. Annealing times of 18 min produced VO2 films with average crystallite sizes…
(2010). Successful cyanide free plating protocols on magnesium alloys. Transactions of the IMF: Vol. 88, No. 2, pp. 75-80.
This paper provides preliminary results of the study on Fuel Failures in Water Cooled Reactors for the period 1994-2006, carried out by an Expert Group established by the International Atomic Energy Agency. The reactors covered by this study are pressurized light water reactors (PWRs and WWERs), boiling water reactors…
Our earlier model has been used to evaluate the characteristics of vacancies, including those determining the effect of pressure on the concentration of vacancies and their diffusion mobility, in some bcc and fcc metals. The characteristics obtained have been compared with the results of simulations performed by other…
This study probes the dependence of titania nanotube arrays nanoarchitecture on different synthesis parameters in viscous electrolytes. Titania nanotube arrays were synthesized in glycerol, ethylene glycol and carboxymethylcellulose as base materials. The effects of anodization voltage and time, as well as chemical co…
The electronic absorption and Raman spectra of CuWO 4 are studied as a function of pressure in the 0 – 20 GPa range. The below-gap absorption bands at 1.15, 1.38 and 1.56 eV correspond to Cu 2+ d-transitions split by the Jahn-Teller distortion of CuO 6 ( R eq = 1.98 Å; R ax = 2.39 Å; Q θ = 0.47 Å). Pressure induces a…
We report the synthesis of carboxyl-functionalized silica-coated CdSe/ZnS quantum dots (QDs) via a reverse microemulsion approach. This facile method does not need to change the solvent phase of the nanoparticles during the synthesis process, and requires no other reaction condition such as high temperature or inertia…
Highly crystalline upconversion fluorescence crystals of ytterbium phosphate (YbPO 4 ) doped with Er 3+ or Tm 3+ were selectively and directly grown on a hydrophilic/hydrophobic self-assembled monolayer (SAM) template patterned by vacuum ultraviolet (VUV, λ = 172 nm) light irradiation. First, a gelatin gel with an inn…
Covers advancements in spacecraft and tactical and strategic missile systems, including subsystem design and application, mission design and analysis, materials and structures, developments in space sciences, space processing and manufacturing, space operations, and applications of space technologies to other fields.
In this work, we present data on the residual stresses measured in the treads of 957-mmdiameter railway wheels using a nondestructive ultrasonic method on an ИH-5101A device. The measurement results show that the residual stresses are compressive and modulo increasing from the center to the periphery for each tested p…
Based on the s-d model and using a Green’s function technique, we have studied the influence of transition metal doping effects on different properties such as magnetization M, Curie temperature TC, and coercive field Hc of ZnO nanoparticles. We have shown that the experimentally obtained room temperature ferromagneti…
A laser beam scanning microscope (LSM) was used to observe the domain structure of 001 orientated NaNbO3 (NN) films on SrRuO3/(001)SrTiO3 substrates. The LSM micrograph clearly showed the domains and the domain walls of NN film. Using a polarization plate revealed that the deposited NN film had antiferroelectric 90° d…
New phosphor nanocrystals of ASnO3:Er3+ (A = Ca, Sr, and Ba) and CaSnO3:Er(3+)-Bi3+ were prepared by a hydrothermal method. Their structures were examined by X-ray diffraction and Raman spectroscopy. Upconversion luminescence properties of the Er3+ ions in these host materials were investigated upon excitation at 980…
The first textbook for teaching this method to users with little mathematical background logically presents the theory and fundamentals in an easily comprehensible, self-contained way.The result is a must-have for advanced undergraduate students, as well as masters and graduate students and other users of single-cryst…
Most porous Si materials studied have been oxidized in various degrees. The oxidized porous Si comprises of a great quantity of nanoscale Si particles (NSPs) and each of them is covered by a Si oxide layer. The structure and luminescence properties of the NSPs embedded Si oxide and the nanoscale Si/nanoscale SiO2 mult…
The present article focuses on the modelling of chemo-mechanics couplings in polymer matrix materials exposed to thermo-oxidative environments at high temperatures (150 °C). The coupling between oxygen reaction–diffusion and mechanics is put in evidence theoretically through the employment of a unified approach, based…