Materials Literature
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The kinetic properties in terms of activation energies and pre-exponential factors of two decomposition stages of Mn(H 2 PO 2 ) 2 ·H 2 O were calculated through the isoconversional method of Kissinger. The calculated results were further used to calculate some transition-state thermodynamic functions (Δ H ⧧, Δ S ⧧, Δ…
Worm-like nanorods and nanospheres of silver have been synthesized by photochemical decomposition of silver oxalate in water by UV irradiation in the presence of CTAB and PVP, respectively. No external seeds have been employed for the synthesis of Ag nanorods. The synthesized Ag colloids have been characterized by UV-…
The reaction of single-component molecular crystal nanorods with a second species to form cocrystal nanorods is described. Single-component crystalline nanorods, composed of 9-methylanthracene (9-MA), are grown in a porous anodic aluminum oxide template. These templated rods are then exposed to a suspension of 1,2,4,5…
Colloidal particles that have nonuniform bulk or surface compositions are of emerging interest because of their potential applications involving advanced chemical storage and delivery and the self-assembly of novel functional materials. Experimental realization of anisotropic particles is much more difficult than that…
The surface melting and lamella rearrangement process that happen in commercially available linear low-density polyethylene (LLDPE) were studied with special emphasis on conformational and crystal structural changes during the process. The thermal melting behavior of the specimens was examined by using differential sc…
A study of the magnetoexciton binding energy in graphene bilayers embedded in a dielectric is presented. The calculations are based on the relativistic Bethe-Salpeter equation assuming a strong magnetic field regime where the lowest Landau-level approximation takes place. It is shown that in graphene bilayer structure…
Polypyrrole (PPy) nanotubes have been synthesized by chemical oxidative polymerization of pyrrole within the pores of polycarbonate membrane using the technology of diffusion of solutes. The nanotubes array prepared by the proposed method can be considered as nanoelectrode ensembles (NEEs). An amperometric uric acid s…
Random copolymers of styrene and 4-vinylpyridine P(S 1− x - co -4VP x ) were synthesized to study the effect of the random copolymer “repulsion” on the self-assembly in hydrogen-bonded complexes with pentadecylphenol (one PDP molecule per 4VP group). The major trends observed as a function of the fraction of styrene m…
Using in situ synchrotron x-ray photoelectron spectroscopy, we obtained high-resolution $\text{As}\text{ }3d$ and $\text{Se}\text{ }3d$ spectra of Se-rich ${\text{As}}_{36}{\text{Se}}_{64}$ glassy films during illumination with band-gap light. We report direct experimental evidence of the chemical origin of the light-…
Electrical conductivity switching is induced by photoirradiation in single crystals of α-(BEDT-TTF) 2 I 3 below 135 K. Photoirradiated crystals show differential negative resistance (DNR), and bistability is observed in the electrical conductivity as a function of applied voltage. The threshold in voltage, which induc…
Using an empirical linear combination of atomic orbitals method (LCAO) based on the sp 3 tight-binding scheme, we studied the band structures of graphene nanoribbons with armchair edges terminated by H atoms and found that the band gap exhibits the size dependence and the ‘family’ behaviors, in which a metallic graphe…
A novel nanometer titanium dioxide (nanoTD)/silk fibroin (SF) blend membrane was prepared and characterized by AFM, FTIR, DSC, and XRD. The strength, solubility and thermal properties and the antibacterial activity of the blend membrane were then investigated. The results show that at a nanoTD/SF weight ratio of 0.1%,…
By analogy with hydrogen-bonded molecular capsules, self-assembled nanotubes are of interest because they can temporarily isolate guest molecules from the solution. We show here that the stability of a particular bis-urea based dynamic self-assembled nanotube is related to the possibility for solvent molecules to fit…
We investigate the influence of directional or bonding interactions on the structure and phase diagram of complex fluids. Using a generalization of the theory of associating fluids we study the interplay between the self-assembly process, driven by the bonding interactions, and the isotropic-nematic transition, driven…
In this paper, single-crystal ZnS column arrays are prepared on the ZnS wafer. The ZnS column arrays are then utilized as a transition layer to achieve large-scale homoepitaxial growth of ZnS nanowire arrays. Through annealing ZnS columns coated with Au films at different temperatures, the Au particle density is contr…
Abstract With the ever decreasing characteristic lengths of nanomaterials, nonequilibrium electron-phonon scattering can be affected by additional scattering processes at the interface of two materials. Electron-interface scattering would lead to another path of energy flow for the high-energy electrons other than ele…
A complete understanding of the kinetic mechanism of fidelity requires comparison of correct and incorrect dNTP incorporation pathways in both the forward and reverse directions. The studies presented here focus on the dNTP-induced conformational step, which has historically been proposed by many to be the major deter…
Abstract Spinel‐type ZnGa 2 O 4 and ZnAl 2 O 4 powders doped with Eu 3+ and Tb 3+ ions, including dual doping, have been prepared by solid phase reactions and by deposition from chemical solutions. XRD analysis demonstrates the high quality of spinel grains constituting the powder. The luminescence shows that the rare…
A Zn x Cd 1− x S shell was deposited around CdSe nanocrystal cores via a noninjection approach in aqueous media. The deposition of the Zn x Cd 1− x S shell around CdSe cores was carried out at 90 °C in a reaction flask consisting of the shell precursor compounds, together with CdSe nanocrystal cores and the capping re…
Characterization and purification studies have been performed on the single-walled carbon nanotubes (SWNTs), prepared by the large-scale (i.e., at production rates of ∼100 g h −1 ) induction thermal plasma process. The main impurities present in the as-produced soot materials are first identified by various material a…