Materials Literature
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Basic results of experimental and theoretical research of creep processes and long-term strength of metals obtained by researchers of the Institute of Mechanics at the Lomonosov Moscow State University are presented. These results further develop and refine the kinetic theory of creep and long-duration strength propos…
Many stakeholders today consider power tower systems to be the most promising CSP technology for the future. Therefore much effort is spent to improve individual components and subsystems. While these are valuable steps towards cost reduction, it is also of great importance to perform an overall, i.e. ‘holistic’, syst…
We show here that graphene oxide selectively gathers heavy IIA group elements in the order of Ba <sup>2+</sup> > Sr <sup>2+</sup> > Ca <sup>2+</sup> > Mg <sup>2+</sup> with enrichment factors >100.
We report in situ small-angle X-ray scattering (SAXS) studies of a cylindrically ordered styrene-ethylene butylene-styrene (SEBS) triblock copolymer melt subjected to uniaxial extensional flow. The flow is applied by stretching strips of polymer melt using a counter-rotating drum extensional flow fixture housed in a c…
Shrinkage and cracking occurs during drying of green products such as clay brick and ceramic tiles Modeling and accurate simulation of shrinkage phenomenon and the stresses induced as a result of drying shrinkage may be used to predict occurrence of defects such as deformation and cracking The objective of the current…
We have synthesized Ni compensated Ce and Nd double filled p-type skutterudites CexNdxFe3.7Ni0.3Sb12 with x = 0.35, 0.40, 0.45, and 0.5 by a melting-quenching-annealing method. The samples were made by directly hot pressing the hand ground powder at 650 °C for 5 minutes at a pressure of about 80 MPa. Since Ni has two…
Supported Ru and Pt nanoparticles are synthesized by the method of strong electrostatic adsorption and subsequently treated under different steaming-reduction conditions to achieve a series of catalysts with controlled particle sizes, ranging from 1 to 8 nm. While in the case of oxidation-reduction conditions, only Pt…
Nanostructural transition of a small peptide bolaamphiphile via molecular self-assembly is a challenging task. Here, we report the self-programmed morphological transformation from nanovesicles to nanofibers of a smart peptide bolaamphiphile in its self-assembling hydrogel state. The nanostructural transition occurs b…
The optical response, binding parameters, and duplex DNA binding mode of water-soluble kinetically inert tetranuclear metallomacrocycles can all be controlled by judicious selection of ancillary ligands.
The formation of macrosegregation in the steel ingots is a multiphase/multiscale flow phenomenon inherently. It still remains a challenge to simulate the macrosegregation in the large steel ingots. The objective of this work is to validate a two phase model by measuring the macrosegregation in a 231 t steel ingot. The…
Metal–semiconductor composite microstructures have recently been demonstrated to possess potential applications due to their unique structures. Ag–Cu2O composite microstructures (Ag–Cu2O CMSs) with tunable silver content have been synthesized with a facile in situ method. Ag contents on the surface of Cu2O can be tune…
Precise control over functionality and nanogeometry during synthesis of gold nanoparticles (AuNPs) and dispersibility of the same in a variety of solvents has been a challenging requirement for practical applications.
Novel hybrid mesoporous and functionalized materials with controllable surface area and pore dimensions with functional basic sites (-NH2) were synthesized from magadiite and [Al]-magadiite as layered silicate precursors. The variable pore structure and properties of these materials were investigated in these solids b…
Copper nanoparticles were impregnated onto oil palm empty fruit bunch (EFB) powders via in-situ sol-gel method. The impregnation and interfacial interaction of copper nanoparticles with EFB were analysed by fourier transformed infrared spectroscopy (FTIR), X-ray diffraction (XRD), field emission scanning electron micr…
One novel mononuclear Tb-nitronyl nitroxide complex, which exhibits SMM behavior, has been obtained.
A novel Dy-complex formulated as {[Dy2Ba(α-C4H3OCOO)8·(H2O)4]·2H2O}n, {Dy2Ba(α-fur)8}n, has been synthesized, structurally characterized, and magnetically and thermally investigated as a function of field and temperature, down to 85 mK. The α-furoate ligands consolidate 1D zig-zag chains formed by Dy2 dimers separated…
Nano‐Ce‐doped Y 3 Al 5 O 12 (YAG:Ce) powders were synthesized by using a sol‐gel low temperature combustion method, followed by thermal annealing. The annealing temperature for enriching nanoparticles was optimized and found to be 1000°C. The process for enriching uniform nanoparticles of YAG:Ce powder was carried out…
We study the adsorption of spherical patchy particles to a flat oil-water interface for their potential applications as interface stabilizers. Chemical heterogeneity in form of single and double patches of different sizes is introduced on the surface of a homogeneous particle to induce an amphiphilic character. For a…
Tuberculosis is a lethal epidemic, difficult to control disease, claiming thousands of lives every year. We have developed a nanodelivery formulation based on para-aminosalicylic acid (PAS) and zinc layered hydroxide using zinc nitrate salt as a precursor. The developed formulation has a fourfold higher efficacy of PA…
Great PlainsBreanna Rivera Waterman, Amy T Hansen, Terrance D Loecke et al.