Materials Literature
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Lightweight orthotropic steel bridge decks have been widely utilized since the 1950s. In the last three decades, severe problems were reported in relation to asphaltic surfacing materials on orthotropic steel deck bridges. The research aims at developing an FE tool to simulate and understand the performance of asphalt…
Many design approaches to the color correction of infrared optics have evolved from theories based on first-order linear equations. When faced with broad spectral design, however, such technologies can fall short. The use of linear approximations for certain material properties has limited the development of well-corr…
Microwave irradiation was used to accelerate the polycondensation of a new thiazole-containing diamine with several chiral diacids. Polymerization reactions were carried out in molten tetrabutylammonium bromide as a green molten salt medium and triphenyl phosphite as the homogenizer. A series of new compounds were cha…
Abstract This paper describes an investigation of fatigue resistance in different steel wire rope constructions used in Norwegian cable logging operations. Test results indicate the following: • A clear difference in fatigue resistance between ropes (approximately 50% decreased endurance for the compacted rope of high…
An alkoxysilane with an alkyl chain is introduced as an alignment-controlling agent of a block-copolymer-templated mesostructured silica film. Use of the alkylalkoxysilane achieves the alignment of the mesochannels of a triblock-copolymer-templated film by an intermolecular interaction with a rubbing-treated polyimide…
Abstract In this paper, a specific emulsion polymerization of acrylic monomers, in the presence of silica particles, is developed to improve the physical properties of the base polymers and add proper functions to them. With this technique, nanocomposites were made by using two types of nonionic and anionic surfactant…
We report on the high-resolution deep-tissue imaging using novel water-dispersible upconversion nanoparticles (UCNPs) β-NaYF4:Yb3+:Tm3+. Luminescence from the UCNP embedded into tissue-mimicking phantoms at the depth of 4 mm epi-illuminated with 975-nm laser radiation was detected. Fiber-optic detection shows 2-times…
Here, we recognize the growing significance of miniaturized devices as medical diagnostic tools and highlight the need to provide a convenient means of powering such instruments when implanted into the body. One of the most promising approaches to this end involves using a light-collection facility to absorb incident…
AIM: The aim of the present study was to investigate the impact of proangiogenic factors [erythropoetin (EPO), human growth hormone (HGH), fibroblast growth factor (FGF), and platelet derived growth factor (PDGF-BB)] on the organization and biodegradation of a porcine-derived collagen matrix (CM) in rats. MATERIAL AND…
This paper is focused on the investigation of fracture parameters like J-integral of compact tension specimen by using ANSYS finite element analysis software which plays key role to estimate fracture toughness of materials. Here controlled displacement loading is applied on CT specimen and the results compared with AS…
Ab-initio total energy calculations have been carried out on MgO single crystal as a function of hydrostatic compression to determine the 0 K isotherm, which is then utilized to derive the 300 K isotherm, isentrope, and Hugoniot of MgO. The theoretical isotherm, isentrope, and Hugoniot compare well with the experiment…
Hydrogenated amorphous silicon nitride-based heterojunction pin diode was electroformed under sufficiently high forward bias stress leading to its instant nanocrystallization at room temperature. In order to investigate the origin of the accompanying bright visible light emission, current-voltage and electroluminescen…
Supercritical carbon dioxide and electric discharge plasma could be one of reaction or extraction media for green chemical processes. Supercritical fluid is an attractive solvent due to its unique characteristic and transport physical properties. Taking advantage of these characteristics, this has been extensively inv…
The dynamic properties of dense two-dimensional (2D) polymer melts are studied using discontinuous molecular dynamics simulations. Both strictly 2D and quasi-2D systems are investigated. The strictly 2D model system consists of a fluid of freely jointed tangent hard disc chains. The translational diffusion coefficient…
The reaction of some first-row transition metal acetate salts with 4-amino-3,5-di(2-pyridyl)-1,2,4-triazole (adpt) gives crystals of interesting octa-, tetra-, di- and mononuclear metal complexes with a range of metal–ligand binding modes observed. Specifically, an octanuclear iron complex [Fe8(adpt− H)2(OAc)11(O)4(OH…
In uncooled LWIR microbolometer imaging systems, temperature fluctuations of FPA (Focal Plane Array) as well as lens and mechanical components placed along the optical path result in thermal drift and spatial non-uniformity. These non-idealities generate undesirable FPN (Fixed-Pattern-Noise) that is difficult to remov…
Recent studies show that copper complexes with ethylenediaminetetraacetic acid ([Cu(EDTA)]-2), is lethal for Aedes aegypti larvae. This compound may have a controlled release when nanocapsules complex in gum/gelatin/chitosan, which may limit their toxicity to the environment. However, the genotoxicity of [Cu(EDTA)]-2…
One-step perturbation is an efficient technique to explore the relation between force-field or model parameters and properties of a molecular system in the condensed phase from a single simulation of the latter using a particular set of model parameters. The accuracy of the prediction of different properties as a func…
An interference lithography technique by surface-polasmon-polaritons reflecting image is suggested for fabricating large-area metal nanopatterns in this paper. This device is designed by an attenuated total reflection mode. Enhanced interference light field is formed in the resist layer coated on any thickness metal f…
We demonstrate a simple approach to grow graphene films on polycrystalline nickel (Ni) foils, in which polycrystalline carbon hybrid materials (CHMs) were used in sandwich structures (molybdenum-CHMs-Ni-molybdenum) as a carbon source for graphene, and pressure was then applied to the sandwich. The CHMs were transforme…