Materials Literature
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Spin-coated perhydropolysilazane films on Si(100) substrates were prepared by a dibutyl ether solution and converted into using a variety of low temperature curing methods. From the Fourier transform IR spectroscopy and the refractive index (RI) measurements, the successful conversion to a high density silica network…
Abstract We use self‐consistent field theory (SCFT) to study the interactions between a polymer‐grafted spherical particle and a bare spherical particle and explore how these interaction energies depend on the radii of the two particles and the grafting density. We find that the magnitude of the interaction energies i…
The individual potential changes in positive and negative electrodes in symmetric and asymmetric electrochemical capacitors (ECs) were monitored simultaneously with a reference electrode during cyclic voltammetry scans. The tracked potential showed equal changes in both electrodes for symmetric EC and uneven changes f…
2D carbon fiber (C‐fiber)‐reinforced carbon/carbon (C/C) composites were prepared by vacuum infiltration with coal‐tar pitch followed by carbonization and graphitization in inert atmosphere. Liquid silicon infiltration was done in controlled atmosphere at 1600°C to convert the matrix carbon of the C/C composites into…
Abstract The Raman spectroscopy technique was used to characterize the microstructure and the crystallization properties of the as‐cast and heat‐treated binary TeO 2 WO 3 , TeO 2 CdF 2 and ternary TeO 2 CdF 2 WO 3 glasses and glass ceramics. The results were compared with those obtained by using the X‐ray diffract…
Abstract A detailed study on the photoselective Raman response of p‐type intercalated single‐wall carbon nanotube (SWCNT) is presented. Here, we focus on the high doping region. The shift of the G‐line is used to monitor the doping level of the p‐type intercalated SWCNT using irontrichloride. Special emphasis is given…
Due to our interest in protein kinase modulating compounds, we developed syntheses for benzo[cd]azulenes. By using very common catalysts and reagents, such as t-BuOK, HCl, and mCPBA, the commercially available guaiazulene is converted in three steps into tricyclic tropone derivatives. Electrophilic aromatic substituti…
Thermal decomposition kinetics of calcium carbonate was studied by non‐isothermal thermogravimetric analysis at different heating rates. The reaction mechanism was found to follow a two‐dimensional phase boundary‐controlled model by model‐free and model‐fitting methods. Two non‐Arrhenius equations (Harcourt–Esson equa…
We report on the fabrication of Eu 3+ -doped SiO 2 −SnO 2 low-loss (0.8 dB/cm at 632.8 nm) glass-ceramic planar waveguides, fabricated by the sol−gel technique and dip-coating processing. The effects of heat treatments on the growth and evolution of SnO 2 nanocrystals in the matrix were investigated using different sp…
Lead‐free perovskite Ba(Al 1/2 Nb 1/2 )O 3 was prepared by conventional ceramic fabrication technique at 1350°C/5 h in air atmosphere. The crystal symmetry, space group and unit cell dimensions were determined from the experimental results using FullProf software whereas crystallite size and lattice strain were estima…
We calculate the x-ray diffraction peak profiles from distributions of misfit dislocations in the whole range of their positional correlations, from completely random to periodic. Both the spatial integration and the integration over the dislocation ensemble are performed by Monte Carlo techniques. The diffraction pea…
Atomistic simulations of the interaction of a screw dislocation in $\ensuremath{\alpha}\text{-Fe}$ with different size bcc Cu precipitates suggest two plausible strengthening mechanisms. For precipitate diameters in the range $1.5\text{ }\text{nm}\ensuremath{\le}d\ensuremath{\le}3.3\text{ }\text{nm}$, the dislocation…
The hierarchical microspheres of Fe 3 O 4 @copper silicate nanotube (Fe 3 O 4 @CSNT) microspheres are synthesized via a simple in situ chemical conversion route by using Fe 3 O 4 @SiO 2 microspheres as a chemical template. The proposed synthesis approach is facile, low cost, and large-scale. The resulting Fe 3 O 4 @CS…
Abstract The type IV collagen is a heterotrimer of two α1 (IV) and one α2 (IV) chains, which are encoded by emb ‐9 and let ‐2 genes in Caenorhabditis elegans, respectively, and the amino acid mutations in Gly‐X‐Y repeat region can cause temperature‐sensitive lethality during late embryogenesis. Here, we introduced a w…
Abstract We present the results of the temperature dependence of the Raman spectra of hexagonal HoMnO 3 thin films in the 13–300 K temperature range. The films were grown on Pt(111)//Al 2 O 3 (0001) substrates using the laser ablation method. In the HoMnO 3 thin films, we initially observedseveral broad Raman peaks at…
Ni-B/diamond composite coatings were prepared using electrophoretic deposition and electroless deposition methods, leading to extremely high hardness which is comparable to hard coatings prepared by dry processes.
Thin films of both the hexagonal and orthorhombic forms of YMnO 3 have been fabricated through atomic layer deposition (ALD) and subsequent heat treatment. ALD-type growth of essentially cation-stoichiometric YMnO 3 films was achieved in a reproducible manner in a temperature interval of 250−300 °C using Y(thd) 3, Mn(…
When small particles (e.g., flour, pollen, etc.) come in contact with a liquid surface, they immediately disperse. The dispersion can occur so quickly that it appears explosive, especially for small particles on the surface of mobile liquids like water. This explosive dispersion is the consequence of capillary force p…
In this article, a layer-by-layer (LbL)-assembled coordination multilayer on planar and 3D substrates was explored by the alternate deposition of a transition-metal-containing polyelectrolyte and a ligand-containing polymer via the formation of complexes. The metal-ligand coordination between the building blocks of Co…
The effect of atomic disordering induced by fast neutron irradiation on normal and superconducting state properties of polycrystalline ${\text{LaFeAsO}}_{0.9}{\text{F}}_{0.1}$ samples was investigated. Fast neutron $(E>0.1\text{ }\text{MeV})$ irradiation to a ``moderate'' fluence $\ensuremath{\Phi}=1.6\ifmmode\time…