Now showing items 31-40 of 2359
Local atomic structure in molten Si3Sb2Te3 phase change material
(SOLID STATE COMMUN, 2012-01)
By means of ab initio molecular dynamics calculations, we have studied the local structures of liquid and amorphous Si3Sb2Te3. The results show that all the constitute elements in liquid Si3Sb2Te3 are octahedrally coordinated. ...
Pressure-induced topological insulating behavior in the ternary chalcogenide Ge2Sb2Te5
(PHYS REV B, 2011-08-26)
We unraveled the pressure-induced topological insulating behavior in Ge2Sb2Te5 (GST) by means of ab initio calculations. We have shown that the spin-orbit interaction separates the twofold degenerate Ge p(x)p(y) Sb p(x)p(y) ...
Enzymatic synthesis of gold nanoflowers with trypsin
A one-step and eco-friendly approach for the room-temperature synthesis of trypsin-mediated three-dimensional (3D) gold nanoflowers (AuNFs) with high colloidal stability is demonstrated. To prepare AuNFs, ascorbic acid ...
ANODIC-OXIDATION OF 1,3-CYCLOHEXANEDIONE TO 1,2,3-CYCLOHEXANETRIONE
(CHEM LETT, 1992-04)
1,3-cyclohexanedione can be electrochemically oxidized in aqueous sulfuric acid at platinum to the 1,2,3-cyclohexanetrione. Yields of about 76% and current efficiencies up to 54% were found.
Solvothermal syntheses of hollow carbon microspheres modified with -NH2 and -OH groups in one-step process
Homogeneous and monodisperse hollow carbon microspheres (HCMS) functionalized with amino and hydroxyl groups are synthesized by decomposing 2,4,6-tribromopheno/ferrocene mixture in the presence of ammonia via a one-step ...
Fuel cell performances at optimized Nafion and Ru85Se15 loadings in cathode catalyst layer
(J POWER SOURCES, 2012-03-01)
The citric acid treated carbon supported Ru85Se15 catalysts are synthesized by microwave assisted polyol method at the optimal solution pH = 7. The catalyst coated membrane method with ultrasonic-spray technique is employed ...
Investigation on Ge5-x Sb (x) Te-5 phase-change materials by first-principles method
(APPL PHYS A-MATER, 2010-06)
The structure stability and chemical bonding of Ge5-x Sb (x) Te-5 (x=0,1,2) phase-change alloys were studied by ab initio calculations. By analyzing formation energies, density of states and electron localization function, ...
Synthesis and characterization of NIR-responsive Aurod@pNIPAAm-PEGMA nanogels as vehicles for delivery of photodynamic therapy agents
A near-infrared (NIR)-responsive Aurod@pNIPAAm-PEGMA nanogel was synthesized in two steps, growing a PEGMA monolayer on the surface of gold nanorods (AuNRs), followed by in situ polymerization and cross-linking of ...
(Ga071B029)PO4 with a high-cristobalite-type structure refined from powder data
Gallium boron phosphate, (Ga0.71B0.29)PO4, was synthesized by a high-temperature solid-state reaction method. The crystal structure is isostructural with the tetragonal high-cristobalite structure with space group P (4) ...
Ab initio study of the structure and chemical bonding of stable Ge3Sb2Te6
(PHYS CHEM CHEM PHYS, 2010)
The atomic arrangements and chemical bonding of stable Ge3Sb2Te6, a phase-change material, have been investigated by means of ab initio total energy calculations. The results show that an ordered stacking of Ge-Te-Ge-Te- ...