Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
This study is focused to determine empirically, which microstructural changes occur in ferritic and duplex stainless steels when heat input is controlled by welding parameters. Test welds were done autogenously bead-on-plate without shielding gas using 5 kW fiber laser. For comparison, some gas tungsten arc welds were…
We report the first two examples of borohydride ammonia borane complexes: Li2(BH4)2NH3BH3 and Ca(BH4)2(NH3BH3)2. Their structures are successfully determined using a combination of X-ray diffraction and first-principles calculations. Both structures are composed of alternating layers of borohydride and ammonia borane.…
A mesoporous PdCo sponge-like nanostructure was successfully synthesized by the combination of electrodeposition and dealloying, and was evaluated as a catalyst for the oxygen reduction reaction of fuel cells. The synthesized film had a sponge-like mesoporosity consisting of 5–30 nm thick ligaments with pores of tens…
A nanostructured disordered Fe(Al) solid solution was obtained from elemental powders of Fe and Al using a high‐energy ball mill. The transformations occurring in the material during milling were studied with the use of X‐ray diffraction. In addition lattice microstrain, average crystallite size, dislocation density,…
Regenerative medicine is a promising therapeutic strategy for the repair and replacement of diseased or injured tissues and organs. The main approach for this method is the fabrication and use of scaffold materials to act as a surrogate framework and promote cell-seeded populations to develop into a mature and functio…
To rationalize structure-reactivity relationships for mixed-metal oxide catalysts, well-defined systems are required. Studies involving the deposition of nanoparticles and clusters of VO(x), CeO(x) and WO(x) on TiO(2)(110) and other well-defined oxide surfaces have shown novel structures that have special chemical pro…
Part 1 of 3: Development and application of polycrystalline diamond compact bits have overcome complex challenges from the difficulty of reliably mounting PDC cutters in bit bodies to accelerated thermal wear.
This paper reports synthesis and semiempirical modeling of 1,4-bis(cyanostyryl)benzene (CSB)-based quadrupolar isomeric molecules (α- and β-CSB-TPs), designed to produce enhancement in fluorescence quantum yield and two-photon absorption cross-sections for the nanoaggregate form. Fluorescence yield together with high…
Molecular interactions of optical clearing agents were investigated using a combination of molecular dynamics (MD) simulations and optical spectroscopy. For a series of sugar alcohols with low to high optical clearing potential, Raman spectroscopy and integrating sphere measurements were used to quantitatively charact…
A versatile instrument for the in situ study of catalyst surfaces by surface x-ray diffraction and grazing incidence small angle x-ray scattering in a 13 ml flow reactor combined with reaction product analysis by mass spectrometry has been developed. The instrument bridges the so-called "pressure gap" and "materials g…
A new class of rhodamine luminophores, 3',3''-bis(oxospiroisobenzofuran)-3,7-bis(dialkylamino)benzopyrano-xanthene derivatives (ABPX), have been successfully developed. The emission behavior of ABPX series is directly opposite to the concentration quenching of conventional rhodamine dyes. ABPX series exhibit aggregati…
Two novel organogelators based on 2,3,4,5-tetraphenylsilole functionalized with long-chain alkoxydiacylamido platforms (1a and 1b) were synthesized. The silole derivatives induced gelation of only hydrocarbon solvents and showed aggregation-induced emission (AIE) in the gel state, in contrast to very weak emission in…
The present feature article gives an overview of the area of controlled self-assembly of electronically interesting π-conjugated oligomers by exploiting principles of suprastructure formation abundant in nature.
Tetrahexahedral Au nanocrystals with exposed {520} facets have been prepared in high yield by facile seed-mediated growth and the as-synthesized tetrahexahedral Au nanocrystals possess enhanced electrocatalytic activity toward the oxidation of formic acid.
The processing, structures and phase constitutions and the magnetic properties of nanocomposite hard magnetic alloys are reviewed. The emphasis is on rare earth (RE)–iron–boron alloys in which the hard magnetic phase RE 2 Fe 14 B is intermixed with one or more soft magnetic phases. Processing–structure–property relati…
Electrochemical supercapacitors are emerging devices of prime importance in energy sustainability due to their superior characteristics, unmatched by any other charge storage device. These exceptional properties include: 1) high power densities at relatively high energy densities and 2) long cycle life. These characte…
Yb(3+), Er(3+), and Tm(3+)-codoped Gd(2)O(3) nanotubes were synthesized via a simple wet-chemical route at low temperature and ambient pressure followed by a subsequent heat treatment at 800 degrees C. X-Ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), thermogravimetric analysis (TGA), upco…
Lanthanum gallogermanate co-doped with chromium ( , where , , , , , and ) samples have been prepared using a solid-state chemical reaction method. The phosphor with is observed to have a persistent IR emission for more than 8 h, which is recorded using a spectrometer. The wavelength of the major IR emission is in the…
A simple and general method is reported to tune the multicolour output of lanthanide-ion doped NaYF(4) upconversion nanoparticles within a given composition by controlling the reaction temperature in the thermolysis procedure.
This article details the preparation of hierarchically ordered microporous films using the so-called breath figure approach combined with the self-assembly of well-defined poly(n-butyl acrylate)-block-polystyrene or poly(tert-butyl acrylate)-block-polystyrene copolymers synthesized by nitroxide-mediated polymerization…