Materials Literature
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ZnO nanoparticles have been studied for potential cell labeling applications over the past several years. However, little progress has been made because of the limited emission color and poor water stability of ZnO nanoparticles. In this work, ZnO nanoparticles with various emission colors, including blue, green, yell…
Using first-principles calculations within density functional theory, we study the energetics and kinetics of C nucleation in the early stages of epitaxial graphene growth on three representative stepped metal surfaces: Ir(111), Ru(0001), and Cu(111). We find that on the flat surfaces of Ir(111) and Ru(0001), two C at…
Vertically aligned ZnO/CdTe core-shell nanocable arrays-on-indium tin oxide (ITO) are fabricated by electrochemical deposition of CdTe on ZnO nanorod arrays in an electrolyte close to neutral pH. By adjusting the total charge quantity applied during deposition, the CdTe shell thickness can be tuned from several tens t…
Introducing graduate students in physics, optics, materials science and electrical engineering to surface plasmons, this book also covers guided modes at planar interfaces of metamaterials with negative refractive index. The physics of localized and propagating surface plasmons, on planar films, gratings, nanowires an…
High-quality single-crystalline centimeter-long V2O5 nanowires are produced using an environmental friendly hydrothermal approach without dangerous reagents or harmful solvents and surfactants. The field-emission, electrochemical, and electrical transport, and photoconductive properties are thoroughly investigated and…
High temperature annealing of gas phase synthesized Mg nanoparticles surrounded by an MgO shell leads to formation of hollow MgO nanoshells due to the evaporation assisted Kirkendall effect. Under electron beam exposure in TEM, the (220) MgO facets reduce their high surface energy by forming cube facets, which is foll…
Abstract The kinetics of the thermal decomposition of basic cobalt carbonate was investigated under non‐isothermal heating in air media using thermogravimetric analysis (TGA). TG‐DTG curves showed that the decomposition proceeded through two well‐fined steps in air. Weight loss of the thermal decomposition of basic co…
Copper-doped zinc sulphide nanoparticles with varying copper content were synthesized via a coprecepitation method and embedded in polymer thin films by phase transfer technique to examine direct current electroluminescence (DC-EL) properties. A single layer structure (ITO/ZnS:Cu@ polymer/Al) was chosen to examine the…
Gelatin films were prepared from gelatin granules in aqueous medium by casting. Tensile strength, tensile modulus and elongation at break of the gelatin films were found to be 27 MPa, 100 MPa and 4%, respectively. Gelatin films were soaked in five different formulations containing 2-hydroxyethyl methacrylate (HEMA) (1…
ABSTRACT Engineering applications of ceramics can often involve mixed‐mode conditions involving both tensile and shear loading. Mixed‐mode fracture toughness parameters are evaluated for applicability to ceramics using the Brazilian disc test on silicon nitride. Semi‐elliptical centrally located surface flaws are indu…
Blocks of vertically aligned multiwall carbon nanotubes were prepared by thermal chemical vapor deposition starting from camphor and ferrocene precursors. The blocks, having a thickness of approximately 2 mm and composed of nanotubes with diameter ranging between 30 and 80 nm, were submitted to compression tests. The…
In this work, Er(3+) and Tm(3+)-doped LiLa(9)(SiO(4))(6)O(2) crystals have been grown from an Li(2)MoO(4) flux in the 1360-940 °C temperature range. Optical absorption spectra have been measured to obtain the experimental oscillator strengths of the transitions from the ground state to the excited levels. Judd-Ofelt c…
Abstract A new modification of Ba 2 SnSe 5 was synthesized in a flux reaction. The crystal structure of this compound was solved in the space group P 12 1 / c 1 with cell parameters of a = 21.17189(8) Å, b = 9.0915(3) Å, c = 24.7141(8) Å and β = 125.621(1) °. The compound consists of two slightly different types of Sn…
Structure and thermal properties of iron (III) hydroxide xerogels obtained under high intensity ultrasonic treatment were studied by means of small-angle neutron scattering and heat-flux calorimetry. It was established that sonication affects the mesostructure of amorphous xerogels (i.e., increase in their homogeneity…
Well-aligned ZnO nanorods were deposited by a mild hydrothermal process and coated with nanosized CeO2 particles (approximately 5 nm) by an oxidative-soak-coating method at 45 degrees C. The low growth temperature proved useful in avoiding interfacial reaction between the two phases. Correlation of photoluminescence r…
Bacteria synthesize a wide array of unusual carbohydrate molecules, which they use in a variety of ways. The carbohydrate L-glycero-D-manno-heptose is an important component of lipopolysaccharide and is synthesized in a complex series of enzymatic steps. One step involves the epimerization at the C6'' position convert…
The dehydrogenation properties and mechanism of MgCl 2 (NH 3 )/MBH 4 (here, M is Li or Na) were investigated by thermogravimetric analysis and mass spectrometry, X-ray diffraction (XRD), solid-state 11 B NMR, Fourier transform infrared, and differential scanning calorimetry (DSC). As for the MgCl 2 (NH 3 )/LiBH 4 syst…
The first discrete anionic indium thiophosphate complexes are reported. The structures of K(6)[In(PS(4))(1.5)(PS(5))(1.5)] (1), Rb(6)[In(PS(4))(PS(5))(2)] (2), and Cs(6)[In(PS(4))(1.5)(PS(5))(1.5)] (3) all contain an anionic moiety consisting of octahedrally coordinated indium surrounded by the thiophosphate anions [P…
Abstract Poly(methyl methacrylate) (PMMA), polystyrene (PS), and polyurethane (PU) nanocomposites containing well‐dispersed calcium phosphate/layered silicate hybrid nanoparticles were prepared in a versatile solvent‐free “one‐pot” process without requiring separate steps, such as organophilic modification, purificati…
Nitrogen doped diamond-like carbon (DLC:N) thin films were deposited on p-Si (100) substrates by DC magnetron sputtering with different nitrogen flow rates at a substrate temperature of about 100 degrees C. The chemical bonding structure of the films was characterized by X-ray photoelectron spectroscopy (XPS) and micr…