Materials Literature
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The aim of this work was to form NiTi and TiNiCo body temperature activated and superelastic staples for clinical joining of mandible and face bone fractures. The alloys were obtained by VIM technique. Hot and cold processing was applied to obtain wires of required diameters. The martensitic transformation was studied…
Here we review measurements of the normal and superconducting state properties of iron-based superconductors using high magnetic fields. We discuss the various physical mechanisms that limit superconductivity in high fields, and the information on the superconducting state that can be extracted from the upper critical…
The resolution of surface plasmon resonance sensors in the geometry of Kretschmann is estimated by numerical simulation for different thicknesses of combinations of silver (Ag), copper, and aluminum (Al) metallic layers with a gold coating layer at set of wavelengths in cases of detecting the change of the refractive…
The drag of massless fermions in graphene double-layer structures is investigated over a wide range of temperatures and interlayer separations. We show that the inhomogeneity of the dielectric background in such graphene structures, for experimentally relevant parameters, results in a significant enhancement of the dr…
We have demonstrated two significant benefits of dynamic surface enhanced raman spectroscopy (DSERS) measurements: removal of instrumental and normal Raman interferences in surface enhanced raman spectroscopy (SERS) spectroscopy and site-selective spectroscopy of adsorbate populations on SERS-active particles. Our fir…
Abstract Graphene has recently gained revolutionary aspirations because of its remarkable electronic, thermal and mechanical properties. These unique properties make it promising for preparing multifunctional nanocomposites. In recent years, polymer foams based on graphene have also received increasing attention in bo…
The continuous wavelet transform is employed to analyze the dynamics and time-dependent energy distribution of phonon wave-packet propagation and scattering in molecular dynamics simulations. The equations of the one-dimensional continuous wavelet transform are presented and then discretized for implementation. Practi…
Abstract Poly (lactic acid) (PLA) was melt blended in a twin screw extruder using an ethylene‐methyl acrylate‐glycidyl methacrylate rubber as a toughener. PLA/rubber blends were immiscible as observed by scanning electron microscopy. Impact strength and ductility of PLA were improved by the addition of the rubber at t…
We report a template-free strategy based on steric repulsion for the isolation of discrete columnar aggregates of macrocycles. Specifically, introduction of sterically-demanding trityl-derived substituents at the periphery of Pt(4) Schiff base macrocycles limits the otherwise infinite one-dimensional columnar aggregat…
We investigated the reaction paths of Stone-Wales rearrangement (SWR), i.e., π/2 rotation of two carbon atoms with respect to the midpoint of the bond, in graphene and carbon nanotube quantum chemically. Our particular attention is focused on the roles of electronic excitations and conical intersections (CIs) in the r…
The doping-charge effects on the electronic structure and stability of hydrogenated graphene have been investigated using density functional theory. Charge doping profoundly decreases the exchange splittings of the magnetic states, but has a negligible effect on the nonmagnetic states in hydrogenated graphene. The tun…
The reaction of oleum (65% SO(3)) with the tetrachlorides of silicon, germanium, and titanium, respectively, led to the complex disulfates Sr(2)[M(S(2)O(7))(4)] (M = Si, Ge), Ba[M(S(2)O(7))(3)] (M = Si, Ge, Ti) and Pb[M(S(2)O(7))(3)] (M = Ge, Ti) if strontium, barium, and lead were used as divalent counter cations. Th…
Open structure ZnO/CdSe core/shell nanoneedle arrays were prepared on a conducting glass (SnO2:F) substrate by solution deposition and electrochemical techniques. A uniform CdSe shell layer with a grain size of approximately several tens of nanometers was formed on the surface of ZnO nanoneedle cores after annealing a…
Novel comb-like polymeric and oligomeric drug carriers combining backbone -copolymers of 5-tertbutylperoxy-5-methyl-1-hexene-3-yne (VEP) and glycidyl methacrylate (GMA) -and side PEG chains of various lengths were synthesized. Nanosized delivery systems containing conjugates of water soluble anticancer drug Doxorubici…
The synthesis and characterization of a new layered compound with the composition (PbSe) 1·16 TiSe 2 in thin-film form is reported in this study. The structure of the new compound was characterized by specular and in-plane synchrotron x-ray diffraction studies, which indicate that the compound can be described as a la…
Abstract Two lanthanide‐containing polyoxometalates (POMs) have been developed as Lewis acid–base catalysts for highly selective and efficient oximation of various aldehydes and ketones under mild conditions.
Alloy discovery and development is slowed by trial and error methods used to identify beneficial alloying elements. This fact has led to suggestions that integrating quantum theory and modeling with traditional experimental approaches might accelerate the pace of alloy discovery. We report here on one such effort, usi…
OBJECTIVE: Few epidemiological studies have addressed the health of workers exposed to novel manufactured nanomaterials. The small current workforce will necessitate pooling international cohorts. METHOD: A road map was defined for a globally harmonized framework for the careful choice of materials, exposure character…
The description of the electronic structure and magnetic properties of multi-centers transition metal complexes, especially of mixed-valence compounds, still represents a challenge for density functional theory (DFT) methods. The energies and the geometries of the correctly symmetrized low-spin ground state are estima…
Twelve compounds based on lateral fluorinated bistolane moieties with cyano or trifluoromethyl terminal groups were synthesised with Hagihara–Sonogashira cross-coupling reaction. The molecular structures of the compounds were confirmed by Fourier transform infrared, 1H-nuclear magnetic resonance and mass spectrometry.…