Materials Literature
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A metal-activator-free orange phosphor was synthesized from ZnO/H3PO3/diamine in choline chloride/oxalic acid deep eutectic solvent, which also acted as methylating agent and source of ethylene glycol (EG) by dissociation of choline ions. Interlayer incorporation of a dimethylated amine made the resulting layered zinc…
The effects of different DNA molecules of the same length on the morphology of gold nanoparticles during synthesis are investigated. While spherical nanoparticles (AuNS) are observed in the presence of 30-mer poly T, like that in the absence of DNA, 30-mer poly A or poly C induces formation of the flower-shaped gold n…
Interfacial etching of silver nanoparticles and separation of the products by polyacrylamide gel electrophoresis afforded Ag8 and Ag7 clusters with red and blue-green fluorescence emission, respectively (see picture). The strongly temperature-dependent emission of the clusters suggests potential applications, whilst t…
Substrate-binding proteins (SBP) are associated with a wide variety of protein complexes. The proteins are part of ATP-binding cassette transporters for substrate uptake, ion gradient driven transporters, DNA-binding proteins, as well as channels and receptors from both pro- and eukaryotes. A wealth of structural and…
Starch is a natural, renewable, and biodegradable polymer produced by many plants as a source of stored energy. It is the second most abundant biomass material in nature. The starch structure has been under research for years, and because of its complexity, an universally accepted model is still lacking (Buleon, A.; e…
Graphene monolayer has been grown by chemical vapor deposition on copper and then suspended over a hole. By measuring the laser heating and monitoring the Raman G peak, we obtain room-temperature thermal conductivity and interface conductance of (370 + 650/-320) W/m K and (28 + 16/-9.2) MW/m(2) K for the supported gra…
Exchange bias from antiferromagnetic (AFM) oxides with a magnetoelectric (ME) effect has been studied for controlling ferromagnetic (FM) magnetizations by an applying electric field. However, thick ME oxides are needed for realizing the electrically controlled exchange biasing. Therefore, in this study the temperature…
Di Indonesia banyak bahan yang dapat dijadikan biomaterial. Bahan baku ferrokrom untuk membuat stainless steel, alumina untuk keramik. Bahan stainless steel mempunyai kekuatan baik tetapi kurang bagus untuk jaringan dan keramik bahan yang rapuh tetapi cocok untuk jaringan. Diharapkan adanya penelitian lanjut untuk bah…
The temperature dependent electron spin resonance (ESR) studies were carried out on Bi0.6Ca(0.4−x)SrxMnO3 (0≤x≤0.4). The variation of charge ordering temperature, TCO, and Néel temperature, TN, are obtained from plots of double integrated (DI) intensity and linewidth (ΔH) of the ESR signal as a function of temperature…
The authors developed a fabrication technique of Co2FeSi/SiOxNy/Si tunnel junctions, employing rapid thermal annealing (RTA). The full-Heusler Co2FeSi (CFS) alloy thin film was directly formed on the ultrathin SiOxNy barrier layer without a buffer layer by RTA-induced silicidation reaction of a Co/Fe/amorphous-Si mult…
A new coercivity enhancement process using dysprosium diffusion in grain boundaries of rapidly solidified strips was developed. The effects of the dysprosium diffusion on microstructure and magnetic properties of sintered Nd14.4Fe78.4Co1.3B5.9 magnets have been investigated. The transmission electron microscope observ…
Using the full potential augmented plane wave plus local orbitals method within the density-functional theory, we report systematical density-functional calculations of four binary transition-metal compounds ScX (X = C, Si, Ge, and Sn) in the hypothetical cubic zinc blende (ZB) structure. Half-metallic (HM) ferromagne…
We probe spin transport in ${\text{Cu}}_{2}\text{O}$ by measuring spin-valve effect in ${\text{La}}_{0.7}{\text{Sr}}_{0.3}{\text{MnO}}_{3}/{\text{Cu}}_{2}\text{O}/\text{Co}$ and ${\text{La}}_{0.7}{\text{Sr}}_{0.3}{\text{MnO}}_{3}/{\text{Cu}}_{2}\text{O}/{\text{La}}_{0.7}{\text{Sr}}_{0.3}{\text{MnO}}_{3}$ epitaxial het…
Nanostructure manganese oxide shows very good catalytic activity in waste water treatment of dyeing industry. A few nano manganese oxides are prepared through different methods, Their catalytic degradation property of dyeing material (crystal violet solution) is tested with H2O2 as oxidizer. Besides, the influence of…
Formation and assembly of monodispersed calcite (CaCO 3 ) dots of diameters 6−10 nm using a zwitterionic phospholipid 1,2-dipalmitoyl- sn -glycero-3-phosphocholine (DPPC) monolayer as template at a two-dimensional interface is reported here. We utilized penetration of Ca 2+ at lower surface pressure (π) into the DPPC…
The long-time correlation functions of an infinitesimally thin needle moving through stationary point scatterers-a so-called Lorentz model-exhibits surprisingly long-time tails. These long-time tails are now seen to persist in a two-dimensional model even when the needle has a finite thickness. If the needles are too…
We discover that hexagonal holmium copper titanate (Ho2CuTiO6), has a unique and highly desirable combination of high dielectric constant, low losses, very small temperature coefficient, and low frequency dependence. Our first-principles calculations indicate that these exceptional properties result from a size-differ…
Controllable and selective nitration of meso-tetraphenylporphyrin using nitronium tetrafluoroborate affords a chromatography-free access to mono-, bis-and tris(4-nitrophenyl)porphyrins in high yields.
Magnetic properties, the magnetocaloric effect (MCE) and refrigerant capacity (RC) were investigated in Eu8Sr8−xGa16Ge30 (x=0,4) type-I clathrates. The substitution of Sr for Eu decreases the Curie temperature (TC) and saturation magnetization (MS) from 35 K and 65 emu/g for the x=0 composition to 15 K and 35 emu/g fo…
pingwei@sjtu.edu.cn ABSTRACT: A novel solid flame retardant poly(3-aminopropyl methylsiloxane bis(3-hydroxyphenyl spirocyclic pentaerythritol bisphosphate)) (PSBPBP) consisted of phosphorus, silicon, and nitrogen was synthesized and characterized by NMR and FTIR. Then PSBPBP was added to a polycarbonate matrix. The fl…