Materials Literature
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Ultrasmall gold nanoparticles have attracted great interest in biomedical applications due to the intrinsic properties of gold nanoparticles and their potential renal clearance capability. We present a synthetic method for a type of sub-10 nm core–shell nanoparticle composed of an ultrasmall gold core, a thin silica s…
The synthesis and characterization of size-separated silicon nanocrystals functionalized with a heteroatom-substituted organic capping group, allylphenylsulfide, via photochemical hydrosilylation are described for the first time. These silicon nanocrystals form colloidally stable and highly photoluminescent dispersion…
The amorphous soft magnetic Fe-Zr-B-M (M = Ni, Co, Al, and Ti) ribbons have been successfully fabricated and their magnetocaloric effect was investigated through the measurements of magnetization in this work. The magnetocaloric effect, both the maximum entropy change and the refrigerant capacity, of the precursor mat…
CO2-responsive nanoparticles have been attracted increasing interest due to their benign reactions with CO2 that give them gas-switchable properties, which can be easily reversed by mild heating or purging with inert gases. In this work, we have prepared CO2-responsive magnetic nanoparticles in a simple one-pot polyol…
Three silicon oxycarbide samples with different carbon contents are analyzed in the present study with respect to their high‐temperature creep behavior. The tests were performed in compression at 1100°C, 1200°C, and 1300°C; in this temperature range the mechanism of creep relies on viscoelastic flow within the samples…
Marsdeniae tenacissimae Caulis (MTC) is a Chinese herbal medicine used mainly for treatment of cancer, whose pharmacologically active constituents responsible for its in vivo activity and clinical efficacy have not been clearly elucidated. In this study, total aglycones of MTC (ETA) showed the ability to sensitize KB-…
Strain field evolution on the surface of aluminum sheet D16 and 2024-T3 alloys has been analyzed during static deformation and during specific high-speed impact and oscillation loading—dynamical non-equilibrium process. Experiments have been conducted using an original mechanical testing technique and a specially deve…
Magnetic refrigeration is an emerging, environment-friendly technology based on a magnetic solid that acts as a refrigerant by magnetocaloric effect. The reference cycle for magnetic refrigeration is AMR (Active Magnetic Regenerative refrigeration). In this paper, attention is directed towards the near-room-temperatur…
The deformation behaviour and mechanical properties of three-dimensional (3D) pillared graphene are investigated using molecular dynamics simulations. The Tersoff–Brenner many-body potential model is employed to evaluate the interactions between 3D pillared-graphene carbon atoms and nanotube carbons. The Lennard-Jones…
This paper summarizes a study of controlled migration of an antifog (AF) additive; sorbitan monooleate (SMO), from linear low density polyethylene (LLDPE) films containing a compatibilizer, LLDPE grafted maleic anhydride (LLDPE-g-MA). LLDPE/LLDPE-g-MA/SMO blends were prepared by melt compounding. Bulk and surface prop…
Abstract A simple route was developed for the synthesis of 9,10,19,20‐tetraarylporphycenes by combining both McMurry and oxidative synthetic strategies and using readily available precursors. The desired 5,6‐diaryldipyrroethenes, which were prepared in multigram quantities over two steps, were used to prepare 9,10,19,…
Multiferroic materials, such as nanostructured h -YMnO 3, are expected to fulfill a crucial role as active components of technological devices, particularly for information storage. Herein, we report on the template mediated sol–gel synthesis of unique one-dimensional nanostructured motifs of hexagonal phase YMnO 3, p…
Abstract To improve the combustion behaviors of conventional consolidated propellants, consolidated propellants were prepared using porous propellant grains as fast‐burning filler. The porous propellant grains were prepared by supercritical fluid foaming process and exhibited the high burning rate. The multi‐perforate…
In this work, a spray-drying method was used to prepare densely structured Zn2SiO4:Mn phosphor particles. Several organic materials such as citric acid, sucrose, and dextrin were examined as additives to control the particle morphology. Consequently, dextrin was found to be the most effective organic additive for obta…
answered through this technology over the coming years. Based on the statistics obtained from thirty countries of the world, the number of consuming products by human being in which the nanomaterials are used, has increased from 54 in 2005 to 1628 in 2013 and it is predicted that this number would be rapidly increasin…
Polypropylene‐based composites filled with multi‐wall carbon nanotubes (MWCNTs), ranging from 1 to 6 wt%, were obtained by injection molding from a previous masterbatch compounded by twin‐screw extrusion (TSE). Resultant electrical percolation phenomenon was related to the ultrathin structure of the carbon‐based fille…
Stress development and fracture of isolated cristobalite spherulites in amorphous silica matrix were observed. High purity bulk silica was annealed to produce partial surface crystallization consisting of isolated and impinged spherulites in an amorphous matrix. The stress state of the amorphous silica surrounding cri…
Grain boundary and triple junction diffusion in nanocrystalline Cu samples with grain sizes, 〈d〉, of ∼35 and ∼44 nm produced by spark plasma sintering were investigated by the radiotracer method using the 63Ni isotope. The measured diffusivities, Deff, are comparable with those determined previously for Ni grain bound…
We present a first-principles investigation of the electronic structure and physical properties of doped lithium nitridometalates ${\mathrm{Li}}_{2}$(${\mathrm{Li}}_{1\ensuremath{-}x}{\mathrm{M}}_{x}$)N (LiMN) with M = Cr, Mn, Fe, Co, and Ni. The diverse properties include the equilibrium magnetic moments, magneto-cry…
The 3d transition metal (M) perovskite oxides exhibit a remarkable array of properties, including novel forms of superconductivity, magnetism and multiferroicity. Strain can have a profound effect on many of these properties. This is due to the localized nature of the M 3d orbitals, where even small changes in the M–O…