Materials Literature
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We have measured a negative thermal expansion (NTE) of the Co subnetwork in amorphous Nd1-xCox (0.78 < x < 0.84) thin films of the order of 1% in volume using linearly polarized EXAFS spectroscopy at RT and 10 K. The expansion, which is anisotropic, is uncorrelated with the perpendicular magnetic anisotropy (PMA) obse…
Abstract Calcium zirconate powders doped with a small amount of CaO were synthesised using the Pechini method. X-ray analysis revealed that solid solution was formed in the concentration up to 51.5% mol CaO. For synthesis of stoichiometric CaZrO3, the highest temperature was required (1150°C), but introduction of exce…
We report here the synthesis and characterization of a reactive liquid crystal (RLC) as a novel polymeric nucleating agent for the promotion of the nucleation efficiency of isotactic polypropylene (iPP). The RLC was synthesized by an in‐situ photo‐polymerization and was then grafted onto the molecular chain of iPP by…
Transparent conductors (TCs) are becoming extremely popular in many different electronic applications such as touch panels, displays, light emitting devices, light sensors and solar cells. The commonly used electrode in these applications is Indium Tin Oxide (ITO). However, the cost of ITO is increasing rapidly due to…
BACKGROUND: Being one class of magnetic resonance imaging (MRI) contrast agents, ultrasmall superparamagnetic particles of iron oxides (USPIO) bear the potential to study neuroinflammation following stroke, but there is still debate over whether the iron oxides particles may enter the brain tissue passively over a dam…
Self‐assembled core–shell Ni–C nanoparticles (NPs) with nearly uniform sizes were grown on the van der Waals (0001) surfaces of GaSe layered crystals. The metal NPs encapsulated within graphite shells (Ni@C) with the sizes ranging from a few to 15 nm were produced by electron beam induced vacuum deposition from metal‐…
The effect of Li₂O and ZnO content and Eu³⁺ ion concentration in the glass composition on the decay of luminescence was investigated in phosphate glasses of composition P₂O₅—Li₂O—ZnO . The emission was excited by high-current electron beam of nanosecond duration with an electron energy of 200 eV. It was found that in…
The structure and stability of a range of zigzag ( n,0) and armchair ( n, n ) ZnS SWNTs of increasing diameter are investigated theoretically using density functional theory. Zigzag and armchair SWNTs are found to be most energetically stable when considerably structurally reconstructed with respect to the correspondi…
A preparation method for gadolinium compound (GdC) nanoparticles coated with silica (<TEX>$GdC/SiO_2$</TEX>) is proposed. GdC nanoparticles were prepared with a homogeneous precipitation method at <TEX>$80^{\circ}C$</TEX> using <TEX>$1.0{\times}10^{-3}$</TEX> M <TEX>$Gd(NO_3)_3$</TEX>, 0.5 M urea and <TEX>$0-3.0{\time…
The measurement of back face signature (BFS) or behind armour blunt trauma (BABT) is a critical aspect of ballistic evaluation of body armour. BFS is the impact experienced by the armour wearing body, when subjected to a non-penetrating projectile. Mineral or polymeric clay is used to measure the BFS. In addition to s…
Flüssiger Ammoniak auf der Nanoskala: Erstmals wird eine Ammoniak-in-Öl-Mikroemulsion vorgestellt, die reproduzierbar und ebenso einfach wie eine konventionelle Wasser-in-Öl-Mikroemulsion verwendet werden kann – mit Ausnahme der für flüssigen Ammoniak notwendigen geringen Temperatur von −40 °C. Als Konzeptstudie wurde…
We report an application of low-temperature Raman scattering on in-plane CuO nanowires, in which an overview of the characteristic parameter of spin-phonon coefficient, the interaction of incident light with the spin degrees of freedom, and size effects will be given. The appearance of spin-phonon coefficient decrease…
An amorphous Yb2O3passivation layer integrated with a crystalline ZrTiO4film was explored as the advanced gate stack for Ge MOS devices. The ZrTiO4/Yb2O3gate stack demonstrates Dit of 2.4 × 1011cm-2· eV-1and EOT down to 0.76 nm which are, respectively, due to the formation of an interfacial YbGeOxlayer that well passi…
We have studied the UV-vis absorption and chiroptical properties, binding affinity and photostability of a conjugated positively charged butadiyne-linked Zn(ii) porphyrin dimer bound to DNA sequence poly(dG-dC)2. Right-handed B-DNA, spermine-induced Z-DNA and Co(iii)-induced Z-DNA have been explored. Resonance light s…
ABSTRACT A series of four pairs of bismaleimide and bisfuran monomers were combined to make thermally reversible linear polymers. The monomers were prepared using diamines having different spacer chemistries, n ‐octyl, cyclohexyl, phenyl, and ethylenedioxy, such that a relatively constant spacer dimension among the fo…
ABSTRACTElectrospinning, is a commonly used technology for fiber formation, which utilizes electrical forces to producefibers with diameters ranging from several micrometers down to few nanometers by using solutions of naturaland synthetic polymers. Successful electrospun materials should have a highly porous structure…
Abstract Shape memory polyurethanes (SMPUs) were synthesized by 4,4′-diphenylmethane diisocyanate (MDI), hexane-1,6-diol (HD), polypropylene glycol (PPG), and recycled polyvinyl butyral (PVB). Dynamic mechanical analysis, differential scanning calorimetry and Fourier transformation infrared attenuated total reflection…
The influence of the metal fine filler nature on the polymerization mechanism of polyvinylpyrrolidonemethacrylate compositions in the presence and without iron(II) sulphate has been determined. The catalysis mechanism has been confirmed via complexation with charge transfer between the initial composition components.…
The mechanical responses of small volume metallic compounds are addressed in this work through developing a nonlocal continuum theory. In this regard, a thermodynamic-based higher-order strain-gradient plasticity framework for coupled thermoviscoplasticity modeling is presented. The concept of thermal activation energ…
ABSTRACT Linear low‐density polyethylene (LLDPE) was melt‐mixed with multiwalled carbon nanotubes (MWCNTs) and varying amounts of three different kinds of talc (phyllo silicate), each with a different particle size distribution, to examine the effect of these filler combinations with regards to the electrical percolat…