Materials Literature
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The synergetic lubrication effects between diamond-like carbon (DLC) coatings and lubricating oils have draw much attention for the past decades, and promising results have been reported between DLC and biodegradable synthetic ester, which might be a potential solution in energy conservation and environmental protecti…
The near band edge emission of the tensile-strained$m$-plane ZnO film grown on (112)$\hbox{LaAlO}_{3} $substrates shows abnormal low polarization degree ($\rho = 0.1$) . The temperature dependency of polarization degree clarifies the origins of different emission peaks. In tensile-strained m-plane ZnO, the [0001] pola…
We measured the normal growth rate of the {110} face (R 110 ) of tetragonal lysozyme crystals grown by the spiral growth mechanism or the two-dimensional (2D) nucleation growth mechanism under various solution flow rates (0, 8.0, 30, 140, 210 μm/s), and observed the step morphology using laser confocal microscopy comb…
AgSbTe2 is a thermoelectric semiconductor with an intrinsically low thermal conductivity and a valence band structure that is favorable to obtaining a high thermoelectric figure of merit zT. It also has a very small energy gap Eg ∼ 7.6 ± 3 meV. As this gap is less than the thermal excitation energy at room temperature…
The spectral-luminescent characteristics of a series of nonsteroidal anti-inflammatory drugs (NSAID) and their complexes with Eu(III) and Tb(III) have been studied. A possibility of NSAID determination using the sensitized luminescence of lanthanides has been shown. A synergistic effect of the impact of trioctylphosph…
Using a variable-composition ab initio evolutionary algorithm implemented in the USPEX code, we have performed a systematic search for stable compounds in the Ca-Bi system at different pressures. In addition to the well-known tI12-Ca2Bi and oS12-CaBi2, a few more structures were found by our calculations, among which…
The origin of the emission of the gold phosphine thiolate complex (TPA)AuSCH(CH3)2 (TPA = 1,3,5-triaza-7-phosphaadamantanetriylphosphine) is investigated using time-dependent density functional theory (TDDFT). This system absorbs light at 3.6 eV, which corresponds mostly to a ligand-to-metal transition with some inter…
In this paper a solid oxide fuel cell (SOFC) system for cogeneration of heat and power integrated with a stratified heat storage tank is studied. The use of a storage tank with thermal stratification allows one to increase the annual operating hours of CHP: heat can be produced when the request is low (for instance du…
The recently obtained spin-crossover nanoparticles are possible candidates for applications in the recording media industry as materials for data storage, or as pressure and temperature sensors. For these applications, the intermolecular interactions and interactions between spin-crossover nanoparticles are extremely…
We show that model molecules with particular rotational symmetries can self-assemble into network structures equivalent to rhombus tilings. This assembly happens in an emergent way, in the sense that molecules spontaneously select irregular fourfold local coordination from a larger set of possible local binding geomet…
We explore the possibility of achieving highly confined two-dimensional electron gas (2DEG) within one single atomic layer through a comprehensive comparison study on three prototypical perovskite heterostructures, LaAlO3/ATiO3 (A = Ca, Sr, and Ba), using first-principles electronic structure calculations. We predict…
Porous nickel ferrite nanorods having diameter ∼200 nm and length ∼2.5 to 3.0 μ m were synthesized by microemulsion method followed by calcination at 450 °C. The morphology and structure of the final as well as intermediate materials, formed during this method, were characterized by x-ray diffraction, field emission s…
The present work focuses on the effect of magnesium (Mg 2+ ) substitution on structural studies of the nanocrystalline cobalt ferrite (CoFe 2 O 4 ). Nanosized magnesium doped cobalt ferrite powders with general formula Co 1- x Mg x Fe 2 O 4 (for x = 0.0, 0.50 and 1.0) were synthesized by sol-gel auto combustion method…
Copper phthalocyanine ( CuPc ) is synthesized chemically and used for making CuPc thin films using spin coating technique. Films were prepared from trifluroacetic acid (TFA) and chlorobenzene mixed solution on the glass substrate. Spin coated films of unsubstituted CuPc films were heat annealed at 150°C for 2 h durati…
We have designed polystyrene nanoparticles through modified nanoprecipitation cosolvent evaporation technique and conventional nanoprecipitation and solvent evaporation. Polystyrene nanoparticles were embedded with silica nanoparticles and graphite to analyze scope of nanoprecipitation cosolvent evaporation. Ultraviol…
We conduct spectroscopic and theoretical studies of photoluminescence (PL) from Ge quantum dots (QDs) fabricated via colloidal synthesis. The dynamics of late-time PL exhibit a pronounced dependence on temperature and applied magnetic field, which can be explained by radiative decay involving two closely spaced, slowl…
We improved the electron field emission properties of ultrananocrystalline diamond (UNCD) films grown on Si-tip arrays by using the carbon nanotubes (CNTs) as interlayer and post-treating the films in CH4/Ar/H2 plasma. The use of CNTs interlayer effectively suppresses the presence of amorphous carbon in the diamond-to…
This study was aimed at fabrication of green composites of polypropylene (PP) matrix 5, 10, 15, and 20 wt% of saw palmetto spent (SPS) (a spent of nutraceuticals) as filler material. Two wt% organically modified montmorillonite clay (MMT) was used as a co‐filler in all formulations and composites were fabricated by me…
Reddish-orange emitting Eu3+-activated Ba3Gd(PO4)3 phosphors have been successfully synthesized by a conventional solid-state reaction. X-ray powder diffraction confirmed the phase formation. The photoluminescence excitation and emission spectra were investigated. The band gap of Ba3Gd(PO4)3 was estimated to be about…
The $ab$-plane resistivity and Hall effect are studied in ${\mathrm{Fe}}_{1\ensuremath{-}y}{M}_{y}{\mathrm{Te}}_{0.65}{\mathrm{Se}}_{0.35}$ single crystals doped with two transition-metal elements, M = Co or Ni, over a wide doping range, $0\ensuremath{\le}y\ensuremath{\le}0.2$. The superconducting transition temperatu…