Materials Literature
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Chromium boride/Al2O3 composites were synthesized by incorporating the thermite reaction into a self-propagating combustion process. Boride phases formed from the Cr2O3 + 2Al + xB samples were identified as Cr2B, CrB, and CrB2 with respect to their starting stoichiometries of x = 1.2, 3.0, and 7.0, indicative of the n…
The present work derives motivation from the so called surface/interfacial magnetism in core shell structures and commercial samples of Fe3O4 and γ Fe2O3 with sizes ranging from 20 to 30 nm were coated with polyaniline using plasma polymerization and studied. The High Resolution Transmission Electron Microscopy images…
In the cyclohexanone purification process, some impurities, such as pentanal, hexanal, and 2-cyclohexen-1-one, must be removed in order to ensure good quality of nylon fibers in the caprolactam polymerization step. To do this, an industrial common practice is to add a homogeneous basic catalyst (such as sodium hydroxi…
Proton NMR measurements on the organic superconductor \ensuremath{\kappa}-(ET)${}_{2}$Cu[N(CN)${}_{2}$]Br [where ET represents bis(ethylenedithio)tetrathiafulvalene] $\left({T}_{C}=11.6\phantom{\rule{0.28em}{0ex}}\mathrm{K}\right)$ exhibit stretched exponential spin-lattice relaxation below $T\ensuremath{\approx}25\ph…
<div class="section abstract"><div class="htmlview paragraph">Compressed natural gas (CNG) has been regarded as an alternative fuel for current fossil fuels such as gasoline and diesel. Recently the increasing interest in shale gas is drawing more attention to CNG vehicles of which number is expected to in…
Electrospinning of various polymers has been used to produce nanofibrous scaffolds that mimic the extracellular matrix and support cell attachment for the potential repair and engineering of nerve tissue. In the study reported here, an electrospun copolymer of l ‐lactide and ε ‐caprolactone (67:33 mol%) resulted in a…
The langasite-type crystals with 3d ions are considered as a class of multiferroics in which ferroelectricity can be induced by the magnetic ordering. In this paper, the high-pressure magnetic states of the langasite-type powdered sample Ba3TaFe3Si2O14 have been investigated in a diamond anvil cell by the nuclear forw…
We have prepared metal matrix composites of a pewter alloy filled with liquid-exfoliated Molybdenum Telluride (MoTe2) nano-platelets. The combination of MoTe2 and pewter was chosen due to their near-identical densities, thus reducing the scope for buoyancy-induced separation during melt mixing. The addition of nanofil…
To understand how fluorene-based polymers selectively extract specific semiconducting single-wall carbon nanotubes (SWCNTs), we compared the optical transitions of SWCNTs wrapped with poly(9,9-dioctylfluorene-alt-pyridine) (PFOPy), i.e., structure-selective polymers, with those wrapped with poly(9,9-di-n-dodecylfluore…
A series of polytitanate nanobelt supported lean-burn NOx trap catalysts Pt- x K 2 CO 3 /K 2 Ti 8 O 17 with different weight loading of K 2 CO 3 ( x = 0%, 5%, 15%, 20%, 25%, or 30%) were synthesized by successive impregnation. The nanobelt support K 2 Ti 8 O 17 displays a specific surface area as high as 302 m 2 /g, a…
We have used the ac magnetic susceptibility to investigate the vortex state in an optimally doped $p$-type Ba${}_{0.5}$K${}_{0.5}$Fe${}_{2}$As${}_{2}$ single crystal under various ac and dc fields. A peak effect is observed in the temperature dependence of the in-phase ac susceptibility, indicating an order-disorder t…
Abstract The analytical solution of the elastic-plastic response of a two-phase laminate microstructure subjected to periodic simple shear loading conditions is derived considering strain gradient and micromorphic plasticity models successively. One phase remains purely elastic, whereas the second one displays an isot…
Abstract Uniaxially drawn polylactide ( PLA ) films were prepared using various draw ratios (2, 3, 4 and 4.5) at a constant draw rate and temperature. It was confirmed that the conformational structure of the PLA films prepared using the uniaxial drawing process was composed of the α ′‐phase form. The conformational s…
Lightly unmasked: Large protein subdomains can be masked and photolytically released using aptamers with a suitable photocleavable linker. No structural knowledge of the protein site is needed. Thrombin Exosite I activity can be efficiently regulated with this approach (see scheme), allowing light-controlled activatio…
Two optically active phthalocyanine derivatives with eight peripheral chiral (S)-4'-(2-methylbutoxy)biphenyl moieties on the β-position of the phthalocyanine ring are synthesized. The circular dichroism (CD) spectra show signals in the Q absorption region for both compounds 1 and 2 in chloroform solution, indicating t…
The emission of electrons from the surface of a solid caused by a high electric field is called field emission (FE). Electron sources based on FE are used today in a wide range of applications, such as microwave traveling wave tubes, e-beam evaporators, mass spectrometers, flat panel of field emission displays (FEDs),…
Structure-activity relationship has been one of the main topics of research on catalysts all the time. Component and structure are the two moieties governing the performance of solid materials as catalysts. Multicomponent bismuth molybdates are well known catalysts for propene oxidation but pure crystalline phases of…
A detailed photoluminescence (PL) analysis and transmission electron microscopy studies on silicon nanocrystals (SNCs) are presented to probe the carrier recombination mechanism. There exist obvious distinctive phenomena in different sizes of SNCs. Clear evidence for the breakdown point of quantum confinement PL is co…
Thermoelectric properties of Bi-Sb-Te and Bi-Se-Te compounds with graded Ag doping profiles are reported. A junction structure with graded doping is formed in the Bi-Te based compounds through thermally driven Ag diffusion, which has demonstrated a greatly enhanced Seebeck coefficient when a thermal gradient is applie…
Temperature‐ and magnetic‐field‐dependent conduction properties of electron‐doped Ca 0.85 Pr 0.15 MnO 3 (CPMO) and Ca 0.85 La 0.15 MnO 3 (CLMO) manganites have been reported. The resistivity for both samples show robust insulating behavior with an inflection near the corresponding charge‐ordering temperatures ( T CO )…