Materials Literature
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A novel Ce3+-doped fluorosulfide phosphor, α-(Y,Gd)FS:Ce3+, was first investigated as a new candidate for application in phosphor-converted light emitting diodes (LEDs) and thin-film electroluminescence (TFEL) devices. The detailed crystal structure was investigated based on X-ray diffraction profiles using Rietveld r…
The 397.9 nm, 416.0 nm and 435.7 nm resonance Raman spectra were acquired for meso-tetrakis(4-carboxyphenyl)porphyrin (TCPP) in tetrahydrofuran solution, and the Raman effect of relaxation dynamics was analyzed according to Herzberg-Teller (vibronic coupling) contributions. Density functional calculations were done to…
Larger hanging-drops on a fiber have been significant for water-acquiring engineering or filtering projects in recent years. Cribellate spider capture silks after wetting hang amazingly large pearly water drops and display strong water capture ability. This ability wouldn't exist without a special wet adhesion on a su…
This paper discusses the importance of the transition between molecular compounds and nanocrystals. The boundary between molecular and nanocrystals/nanoclusters can be defined by the emergence of the bulk phase; atoms in the core of the nanoclusters that are not bound to ligands. This transition in dimensions and stru…
The problem of obtaining exact information on the particle size dependence of the rate of gold-catalysed reactions is surveyed, and it is shown to be possible that over a range of mean sizes the activity for CO oxidation is predominantly due to the fraction of particles smaller than about 2.5 nm. This size coincides w…
Synthesis of polymer nanocomposites with novel shear stiff, mica-like nanoplatelets from a synthetic layered silicate is presented. This novel synthetic clay filler shows high aspect ratios while organophilization may be selectively restricted to external surfaces minimizing the organic content of the filler. The obta…
In this work we investigated the scattering and absorption properties of nanofluids consisting in aqueous suspensions of single wall carbon nanohorns. The characteristics of these nanofluids were evaluated in order to use them as direct sunlight absorber fluids in solar devices. The investigation was carried our for n…
Spherical hybrid assemblies based on cationic surfactants and anionic porous polyoxometalate nanocapsules [{(Mo)Mo5O21(H2O)6}12{Mo2O4(SO4)}30]72− (Mo132 for short) are fabricated by the method combining an electrostatic encapsulation process and a polarity induced self-assembly process. The spherical assemblies posses…
A new semiempirical potential, based on density functional calculations and a bond-order Morse-like potential, is developed to simulate the adsorption behavior of thiolate molecules on non-planar gold surfaces, including relaxing effects, in a more realistic way. The potential functions include as variables the metal-…
High quality single crystalline metastable phase VO(2) (A) ultra-long nanobelts were synthesized by hydrothermal method using inorganic V(2)O(5) sol as precursor and polyethylene glycol (PEG) as both surfactant and reducing agent. It was found that the oriented attach growth mechanism is responsible for the formation…
Phospholipid vesicles encapsulating magnetic nanoparticles (liposome complexes) have been prepared for targeting a drug to a specific organ using a magnetic force, as well as for local hyperthermia therapy. Liposome complexes are also an ideal platform for use as contrast agents of magnetic resonance imaging (MRI). We…
Carbon nanotubes (CNTs) consist of a graphene sheet (two-dimensional hexagonal lattices of carbon atoms) rolled up into a cylinder. This nanoscale structure has generated enormous interest in the research field of science and engineering in the last decades because of its excellent mechanical properties. For example,…
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Abstract — Tests were performed on a single cylinder, four stroke, direct injection, diesel engine whose piston crown, cylinder head and valves were coated with a 0.5 mm thickness of 3Al2O 3.2SiO 2 (mullite) (Al 2O 3 = 60%, SiO 2 = 40%) over a 150 µm thickness of NiCrAlY bond coat. Tests were carried out on standard e…
CuInS 2 /ZnS(CIS/ZnS) core/shell quantum dots(QDs) were used in light emitting diodes (LEDs) as a wavelength converter. When the CIS/ZnS QDs in silicone encapsulants were applied to LEDs, they exhibited significant fluorescence instability followed by emissive blue-shift of 10 nm and decrease of luminescent intensitie…
doping (0, 1, 5, 10 and 15 wt%) are prepared for the first time by the sol gel method. The film surface is with a ganglia-like structure as observed by Scanning Electron Microscopy (SEM). The films comprise of ZnO nanocrystallites with hexagonal crystal structure, as revealed by means of X-ray diffraction (XRD). (ii)…
Soft drink bottles was subjected to depolymerization through aminolysis using mono ethanol amine (MEA) in the presence of sodium acetate as a catalyst the product of pol(bis(2- hydroxyethylene)terephthalamide (PHETA) was evaluated as corrosion inhibitors for C-Steel in 1 M HCl by using weight loss, open circuit potent…
With the rapid development of nanoscience and nanotechnology, a wide variety of nanomaterials have been synthesized and discovered. Revolutionary particles called nanodiamonds (NDs) have been considered for use in several medical applications due to its unique mechanical, chemical, optical, and biological properties.…
Due to its remarkable mechanical and biological properties, there is considerable interest in understanding, and replicating, spider silk's stress-processing mechanisms and structure-function relationships. Here, we investigate the role of water in the nanoscale mechanics of the different regions in the spider silk fi…
Graphene oxide (GO) was modified by surface grafting and the product P-GO exhibited a surprisingly good solubility in common solvents (as high as 1.8 mg mL−1 in DMF) without sonication and can be spin coated to form large single-layer sheets on a substrate. In contrast to GO, all-single-layer P-GO sheets are readily f…