Materials Literature
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Abstract This paper reviews the mechanisms of initiation and the prevention of TLC. Practical multi-faceted techniques based on the most recent research and developments will be described and then illustrated using documented sources to arrive at best practices for control of this significant corrosion manifestation.…
The electric conductivity of nanocluster polyoxomolybdates (POMs) Mo 132 and Mo 72 Fe 30 with a keplerate structure in aqueous solutions, of these POMs in the solid state, and of Mo 138 with a toroidal structure was studied. Data on the concentration dependence of the equivalent electric conductivity in solutions and…
Grain‐boundary plane distributions ( GBPD s), grain size distribution ( GSD s), and upper tail departure from log‐normal GSD s were quantified in dense and porous La 0.8 Sr 0.2 MnO 3 samples to understand expected microstructures in solid oxide fuel cells. Samples were sintered at 1450°C for 4 h and then annealed betw…
Phase-change materials have important applications in the field of data storage. Recent experiments have shown that the prototypical phase-change materials GeTe and Ge2Sb2Te5 exhibit interesting magnetic properties when they are doped with transition metal elements, such as Cr, Mn and Fe. Here we report on first-princ…
Acid-thinned corn starch has been sulfosuccinylated to different levels of degree of substitution to study the adhesion of starch to viscose fibres at lower temperature. The sulfosuccinylated starches with a degree of substitution range 0.009 - 0.036 have been synthesized through a two-step reaction, namely starch mal…
Photoluminescence spectrum, trap depths, and densities of trapped carriers of CaAl 2 O 4 : Eu phosphor crystals doped with rare‐earth elements were studied using the thermally stimulated luminescence technique. Trap depths and densities of the specimens vary with rare‐earth elements doped as the auxiliary activators.…
A systematic study on the growth of Cr2O3 in three-dimensional cubic ordered mesoporous silica (KIT-6) and its replication through nanocasting is reported. By changing the loading time and amount of precursor, the size and shape of the obtained replica could be controlled to some extent. More interestingly, in contras…
We investigate charge transport behaviour in colloidal ZnO nanocrystal solids with different surface states. Our results show that the logarithm of the conductivity scales with −T−1/4, suggestive of Mott variable-range hopping. Analysis of the density of states at the Femi level suggests that the charge hopping occurs…
Abstract The catalytic oxidation of a series of alkenes by three MnII complexes, MnCl2[(–)‐L]2 (1), ({MnCl[(–)‐L]}2(μ‐Cl)2) (2), and Mn(CF3SO3)2[(–)‐L]2 (3), having the bidentate N‐ligand (–)‐pinene[5,6]bipyridine, (–)‐L, and using peracetic acid as oxidant in acetonitrile is described. The performance of catalysts 1…
The Taguchi method was adopted to optimize the fabrication condition of solid state polymerized polyamide (SSP PA66) nanofibers with respect to minimizing nanofiber diameter. A novel fabrication system called air-sealed centrifuge electrospinning was used for preparing high-quality nanofibers. In this study, solution…
We examined the electrooptical properties of a nematic liquid crystal (LC) sample whose substrates were coated with a mixture of carbon nanotube (CNT) and polyimide (PI). The relaxation time of the sample coated with 1.5 wt. % CNT mixture was about 35% reduced compared to the pure polyimide sample. The elastic constan…
A new revolutionary attitude toward investigation of fatigue damage in cyclically loaded steel samples is reported. The measurement is based on the method of magnetic adaptive testing, which-–in contrast to traditional magnetic hysteresis investigations-–picks up the relevant information from systematic measurement an…
It was reported that glass transition temperature ( T g ) measured by differential alternating current (ac) chip calorimetry showed little thickness dependence for polymer films. Here we demonstrate the detection of T g in thin films by ac-chip calorimeter and show that T g is decreased as the thickness is reduced for…
Arrays of graphene or few-layer graphene quantum dots (QDs) embedded in a partially fluorinated graphene matrix were created by chemical functionalization of layers. Charge transient spectroscopy employed for investigation of obtained QD systems (size 20–70 nm) has allowed us to examine the QD energy spectra and the t…
Molecular dynamics simulation of biomolecules in solvent using an atomic model for both the biomolecules and the solvent molecules is still computationally rather demanding considering the time scale of the biomolecular motions. The use of a supramolecular coarse-grained (CG) model can speed up the simulation consider…
Hybrid-exchange density functional theory calculations are carried out to determine the effects of A-site doping on the electronic and magnetic properties of the manganite series ${\mathrm{La}}_{1\text{\ensuremath{-}}x}$${\mathrm{Ca}}_{x}$${\mathrm{MnO}}_{3}$. This study focuses on the ground state of an ordered Ca oc…
The stability of copper films of three types on graphene was studied by the molecular dynamics method. Films in the form of (111) and (100) planes and elongated (111) plane of the Cu crystal were considered. The initial arrangement of the Cu atoms relative to the carbon atoms was shown to considerably affect the therm…
We fabricated SrRuO3/BaTiO3/GdScO3 heterostructures in which the BaTiO3 layer is one unit cell thick by pulsed laser deposition and elucidated how the BaTiO3 layer influences structural and magneto-transport properties of the SrRuO3 layer through octahedral connections across the heterointerface. Our X-ray-diffraction…
We report enhanced green and red upconversion (UC) luminescence in Ho3+-doped oxyfluoride germanate glass by introducing bismuth near-infrared active centers as sensitizers. The UC excitation bands at 750 and 970 nm show a full width at half-maximum of 20 and 45 nm, respectively. Energy transfer from sensitizers, the…
We report the layer-number dependence of the averaged interlayer thermal resistances (${R}_{\mathrm{int}}$) of the suspended and supported few-layer graphene (FLG), simulated by equilibrium molecular dynamics (EMD). The existence of a silicon dioxide substrate significantly decreases the ${R}_{\mathrm{int}}$ of FLG at…