Materials Literature
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ZnFe 2 O 4 films have been prepared using a sol–gel route. The influences of annealing temperature as well as annealing atmosphere on the structural, morphological, magnetic, and optical properties were investigated. The TEM and SEM images show that ZnFe 2 O 4 films are polycrystalline in nature and homogeneous with d…
Both bacteriopyropheophorbide-a and ring-B reduced pyropheophorbide-a on reacting with NBS (N-bromosuccinamide) undergo electrophilic bromination to provide 10-bromo analogs. The electronic nature of the substituents present at position-3 did not make any difference in the regioselective outcome of the brominated prod…
Abstract Long chain cellulose esters (LCCE) are bio‐based materials, which are biodegradable, can be prepared from renewable materials, and have relatively good mechanical and barrier properties. In this study, we tested the feasibility of various LCCEs as a coating material for paperboard. Cellulose hexanoates (C6) a…
BaAlBO3F2 (BABF), a newly developed nonlinear optical (NLO) crystal, was fully investigated for high-power harmonic generation of UV light. This was performed after successfully growing high-quality single crystals in the LiF–B2O3–NaF flux system. Thermal expansion, specific heat, transmittance spectrum, nonlinear opt…
The dynamics of a large number of liquids and polymers exhibit scaling properties characteristic of a simple repulsive inverse power-law potential, most notably the superpositioning of relaxation data as a function of the variable ${\mathrm{TV}}^{\ensuremath{\gamma}}$, where $T$ is temperature, $V$ the specific volume…
To enhance the practical application of active edible coatings in the food industry, edible zein coatings incorporated with nisin (54.4 AU/cm2) or nisin/ethylenediaminetetraacetic acid (EDTA; 568 µg/cm2) were used to preserve the quality of commercially manufactured fish balls. The microbial load, total basic volatile…
ZnS nanoribbons (NRs) with controlled p-type doping were synthesized by using Sb as dopant. The p-type conductivity of the ZnS:Sb NRs could be tuned in a wide range of seven orders of magnitude by adjusting the Sb doping level. Nano-Schottky barrier diodes based on Al/p-ZnS NRs junctions exhibited excellent device per…
The structural, electronic, bonding, and elastic properties of the low-temperature orthorhombic phase of NH(3)BH(3) are studied by means of first-principles total energy calculations based on the pseudopotential method. The calculated structural parameters of NH(3)BH(3) are found to be in good agreement with the exper…
We present a new formulation of the jamming phase diagram for a class of glass-forming fluids consisting of spheres interacting via finite-ranged repulsions at temperature $T$, packing fraction $\ensuremath{\phi}$ or pressure $p$, and applied shear stress $\ensuremath{\Sigma}$. We argue that the natural choice of axes…
We investigate bending behaviors of graphene nanoribbons (GNRs) induced by surface adsorption of hydrogen atoms or molecules. At low adsorption coverage, it is shown that the chemical adsorption of hydrogen atoms causes a GNR to bend away from the adsorbed atoms while the physical adsorption of hydrogen molecules caus…
Abstract A zinc‐based catalyst zinc bis[bis(trimethylsilyl)amide] was used for the polymerization of cyclic esters including L ‐lactide ( L ‐LA) and 2‐methyl‐2‐carboxyl‐propylene carbonate (MBC). The polymerization of L ‐lactide in THF could be carried out successfully under mild conditions in very short time by using…
The Coulomb interaction between massless Dirac fermions may induce dynamical chiral symmetry breaking by forming excitonic pairs in clean graphene, leading to semimetal-insulator transition. If the Dirac fermions have zero bare mass, an exact continuous chiral symmetry is dynamically broken and thus there are massless…
FexPt(1−x) nanowire arrays embedded in porous alumina membranes with controlled diameters and high aspect ratios were fabricated by the pulse electrodeposition method in a novel bath with a simple composition. The composition of FexPt(1−x) nanowires can be highly controlled by the negative deposition voltage and the p…
Calculations for model oligomers of the emeraldine salt with UBLYP/6-31G*/PCM are performed. The models differ in number of monomers, in the position of the counterions (Cl(-)), and in multiplicity. The molecular features affected most prominently by the protonation, namely, structure, energetics, and electron and spi…
Studies aimed at understanding the global properties of the hyperpolarizabilities have focused on identifying universal properties when the hyperpolarizabilities are at the fundamental limit. These studies have taken two complimentary approaches: (1) Monte Carlo techniques that statistically probe the full parameter s…
We have developed a general method combining photochemical grafting and copper-catalyzed click chemistry for biofunctionalization of titanium substrates. The UV-activated grafting of an α,ω-alkenyne onto TiO(2)/Ti substrates provided a "clickable" thin film platform. The selective attachment of the vinyl end of the mo…
Abstract An evaluation of the suitability of commercially available biopolymers on the shelf‐life of fresh salmon fillet was done. The comparison included two different types of biomaterials, poly lactic acid (PLA)‐based and starch‐based materials, and two traditional materials, amorphous polyethylene terephthalate/po…
It has recently been demonstrated that pentacene can serve as protection layer for graphene on SiC preserving the unique E(k) band dispersion after exposure to atmosphere and subsequent annealing in vacuum. We confirm the stability of the ideal graphene band dispersion but without any protection layer. We demonstrate…
Optical absorption spectroscopy and X-ray structural refinements of seven different spinel single crystals on the (Mg 1-x Mn x )Al 2 O 4 solid solution (x = 0.02-1.00) evidences exceptionally strong relaxation (ε = 0.83) of IV Mn 2+ -O bonds. Our single-crystal structure refinements demonstrate that the ideal IV Mn 2+…
Adhesion and delamination behavior of amorphous carbon nitride (a-CN(x)) is critical to development of wear resistant materials and protective coatings. Here, the composition and delamination behavior of a-CN(x) films was explored utilizing BrCN, CH₃CN, and CH₄ as film precursors, either alone or in combination with o…