Materials Literature
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In a twist: The carboxylate ligand in the clamp of a highly preorganized diferrous site shows temperature-dependent dynamic behavior, coined the “carboxylate twist”. It leads to a fluctuation of the electric field gradient and thus averaged Mössbauer resonances at higher temperatures, resulting in magnetic and spectro…
The application of emerging nanotechnology to the practice of medicine represents a frontier of nanomedicine. Nanomedicine has been defined as a science which emphasizes the use of nanoscale tools in conjunction with background knowledge of the human body for medical diagnosis and treatment. Application of nanomedicin…
We report small-angle neutron scattering studies on the microstructure network in bulk (Bi,Sb)2Te3 synthesized by the melt-spinning (MS) and the spark-plasma-sintering (SPS) process. We find that rough interfaces of multiscale microstructures generated by the MS are responsible for the large reduction of both lattice…
The phase diagrams of EuFe${}_{2\ensuremath{-}x}$Co${}_{x}$As${}_{2}$ $(0\ensuremath{\le}x\ensuremath{\le}0.4)$ and EuFe${}_{2}$As${}_{2\ensuremath{-}y}$P${}_{y}$ $(0\ensuremath{\le}y\ensuremath{\le}0.43)$ are investigated by Eu${}^{2+}$ electron spin resonance (ESR) in single crystals. From the temperature dependence…
Complex fluids in shear flow and biased dynamics in crowded environments exhibit counterintuitive features which are difficult to address both at a theoretical level and by molecular dynamic simulations. To understand some of these features we study a schematic model of a highly viscous liquid, the two-dimensional Kob…
A new approach to metamaterials is presented that involves laser-based patterning of novel chiral polymer media, wherein chirality is realized at two distinct length scales, intrinsically at the molecular level and geometrically at a length scale on the order of the wavelength of the incident field. In this approach,…
Abstract We report the preparation of the core/shell cadmium selenide/Zinc sulfide quantum dots (CdSe/ZnS QDs)‐silicone resin nanocomposite through the solution‐mixing method, followed by thermal hydrosilylation. After dispersing QDs into Dow Corning two‐component silicone resins (OE6630A and OE6630B at 1:4 mixing rat…
In this paper, the buckling behavior of generic higher-order shear beam models is investigated in a unified framework. This paper shows that most higher-order shear beam models developed in the literature (polynomial, sinusoidal, exponential shear strain distribution assumptions over the cross section) can be classifi…
We present ab-initio calculations of seven digital magnetic heterostructures, GaN δ-doped with V, Cr, Mn, Fe, Co, Ni, and Cu, forming two-dimensional systems. Only GaN δ-doped with V or Cr present a ferromagnetic ground state with high Curie temperatures. For both, to better describe the electronic properties, we used…
Superlattice-like top electrode formed alternately by TiN and W was embedded into phase-change random access memory (PCRAM) with the aim of reducing the power. Ga2Sb4Te3 film is employed as phase change layer. The minimum reset voltage of PCRAM based on superlattice-like electrode was significantly lower than that of…
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Far field imaging of subwavelength magnetic objects in real time is a very challenging issue. We propose an original solution based on a planar array of closely spaced split ring resonators. Hybridization between the resonators of such metalens induces subwavelength modes with different frequencies. Thanks to these hi…
Abstract This research examined the metallurgy of production of forged excavator teeth manufactured from low‐carbon low alloy steel. A novel partial forging‐remnant‐heat hardening technology was proposed. The critical temperature of isothermal annealing for 40 Cr steel was determined experimentally to be 650°C. Produc…
Abstract Fly ash, waste product of thermal power station, generated in huge quantities has been posing problems of its disposal. As such, it contains a variety of inorganic oxide and is available in finely powder form. Attempts have been made for its utilization, as filler in engineering plastic. The fly ash (FA) fill…
Abstract In nominally undoped layered TlGaSe2 crystals the trapping centers have been investigated by photo‐induced current transient spectroscopy (PICTS). Five acceptor and donor traps have been detected. Quite large magnitudes of capture cross‐sections for donor traps at 0.23 and 0.45 eV have been determined. The de…
Boron and carbon, either in elemental form or when combined, are structurally very different. They are indeed complementary, and the weaknesses of one can be complemented by the strengths of the other, and vice versa. The structural complementarity can be readily observed in the shape of [X n H n ] y– (X = C or B) com…
We use a path integral quantum Monte Carlo method to simulate excitons and biexcitons in core/shell nanocrystals with Type-I, Type-II, and quasi-Type-II band alignments. Quantum Monte Carlo techniques allow for all quantum correlations to be included when determining the thermal ground state, thus producing accurate p…
We show how the magneto-phonon resonance, particularly pronounced in sp 2 carbon allotropes, can be used as a tool to probe the band structure of multilayer graphene specimens. Even when electronic excitations cannot be directly observed, their coupling to the E 2g phonon leads to pronounced oscillations of the phonon…
We show that the opacity of a clean multilayer graphene flake depends on the helicity of the circular polarized electromagnetic radiation. The effect can be understood in terms of the pseudospin selection rules for the interband optical transitions in the presence of exchange electron–electron interactions which alter…
Synthetic substrates with defined chemical and structural characteristics may potentially be prepared to mimic the living ECM to regulate cell adhesion and growth. Hydrogels with cell-adhesive peptides (0.28 ± 0.03 nmol peptide cm(-2) , TTA-R-0.5; and 0.91 ± 0.12 nmol peptide cm(-2) , TTA-R-2.0) and/or micro-scaled to…