Materials Literature
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In this work, the sintering behaviors, microwave dielectric properties, and chemical compatibility with silver of pure and B 2 O 3 –CuO addition Li 2 MO 3 (M=Ti, Zr, Sn) ceramics were studied. The 1 wt% B 2 O 3 –CuO addition does not affect the phase composition of Li 2 MO 3 (M=Ti, Zr, Sn) and no secondary phase could…
Polymer substrates have been functionalized with a MOF material (MIL-47) synthesized directly on polyacrylonitrile using in situ microwave irradiation. The growth of MIL-47 on these substrates was studied as a function of microwave irradiation time using scanning electron microscopy, X-ray diffraction, Fourier transfo…
A unique design of a nickel nanocone-arrays supported silicon anode is introduced for high-power and long-life lithium-ion batteries. The nanostructured Si anodes show a high reversible capacity of around 2400 mAh g−1 (at 0.2C) and excellent cycling capability. They also exhibit an impressive high-rate capability and…
We describe an ultrathin solar cell architecture that combines the benefits of both plasmonic photovoltaics and traditional antireflection coatings. Spatially resolved electron generation rates are used to determine the total integrated current improvement under AM1.5G solar illumination, which can reach a factor of 1…
So far, single-molecule imaging has predominantly relied on fluorescence detection. We imaged single nonfluorescent azo dye molecules in room-temperature glycerol by the refractive effect of the heat that they release in their environment upon intense illumination. This photothermal technique provides contrast for the…
The design, synthesis, and characterization of the first examples of furan-containing low band-gap polymers, PDPP2FT and PDPP3F, with substantial power conversion efficiencies in organic solar cells are reported. Inserting furan moieties in the backbone of the conjugated polymers enables the use of relatively small so…
This Review aims to give an overview of recent research in the area of porous, organic-inorganic and purely organic, functional materials. Possibilities for introducing organic groups that exhibit chemical and/or physical functions into porous materials will be described, with a focus on the incorporation of such func…
Molecular dynamics (MD) simulations are widely used to study protein motions at an atomic level of detail, but they have been limited to time scales shorter than those of many biologically critical conformational changes. We examined two fundamental processes in protein dynamics--protein folding and conformational cha…
CdTe -doped SiO 2 thin films were produced by RF magnetron co-sputtering technique. Presence of CdTe nanocrystals inside the silica matrix was confirmed by Raman spectroscopy and grazing incidence X-ray diffraction. The samples demonstrate size dependent photoluminescence. Temperature dependent photoluminescence measu…
This paper presents an investigation into the application of natural fiber composite especially ramie fiber reinforced epoxy lamina composite for socket prosthesis. The research focuses on the tensile and shear strength from ramie fiber reinforced epoxy lamina composite which will be applied as alternative material fo…
In the typical ferroelectric, (Pb 1− x La x )(Zr y Ti 1− y )O 3 [PLZT (7/60/40)] crossover to the relaxor phase has been achieved by isovalent A‐site substitution. Dielectric, ferroelectric, electric field‐induced strain, and structural studies reveal that the influence of the chemical substituent strontium on this cr…
Boron-centered radicals have received growing interest. Recently, two groups reported density functional theory investigations (GGA-PW91 and B3LYP) on a hexa-atomic boron-oxide radical, B(5)O, which has led to great discrepancies on the type of low-lying structures. In this article, we not only explore the energetics…
We report here the investigation of new flame retardant compounds for textiles, obtained by radical polymerization of allyloxydioxaphosphorinanes. These monomers were first synthesized by a transesterification reaction. A deep NMR study of such compounds revealed the existence of diastereoisomers Z and E. Radical poly…
Novel solution precursors for CeO 2 buffer layers, based on mixed-ligand hydroxocomplexes of lanthanide acetates and nitrates with monoethanolamine (MEA) and diglyme, acting as both ligands and solvents, have been developed. The formation of mixed-ligand Ce(IV) complexes in both liquid and transparent gel precursors h…
A series of ferrocene-based rod-like mesogens has been synthesized in which the oxadiazole unit is in a terminal position. The length of the terminal S-alkyl chain, alkyl spacer length, and substitution on lateral position have been varied. All the synthesized compounds are thermally stable and exhibit mesomorphism. M…
Self-consistent field theory is applied to investigate the effects of crystallized polymer nanoparticles on polymer surface tension. It is predicted that the nanoparticles locate preferentially at the polymer surface and significantly reduce the surface tension, in agreement with experiment. In addition to the reducti…
A novel series of double hydrogen-bonded liquid crystals has been isolated. A hydrogen bond was formed between a nonmesogen chiral ingredient levo tartaric acid (LTA) and mesogenic alkyl benzoic acids (nBA). Thermal and electrical properties exhibited by levo tartaric acid and alkyl benzoic acid (LTA + nBA) are discus…
A new, two‐step method for the synthesis of porous mullite–cordierite composites with controllable coefficients of thermal expansion (CTE) values is reported. In the first step, a porous structure of interconnected acicular mullite grains with high aspect ratios is formed by using SiF 4 gas at elevated temperatures. T…
A new process for making single crystalline undoped and Ga-doped ZnS nanowires with simple evaporation and condensation procedures on Si and GaN is introduced. The process does not need additional catalysts or precursors. The growth mechanism is studied using transmission electron microscopy (TEM), x-ray photoelectron…
Two new series of Schiff base thermotropic liquid crystals, 6-methoxy-2-(2-hydroxy-4-alkanoyloxybenzylidenamino)benzothiazoles and 6-ethoxy-2-(2-hydroxy-4-alkanoyloxybenzylidenamino)benzothiazoles, comprising different terminal groups, a methoxyl and ethoxyl group, respectively, were synthesized. Structural elucidatio…