Materials Literature
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To prevent the dissociation of organic ligands from the inorganic core and accordingly enhance colloidal stability, is the prerequisite for the further application of nanocrystals in different areas. Dihydrolipoic acid (DHLA) appears very promising for the stabilization and the further functionalization of CdTe nanocr…
The use of bacterial flagella as templates for the immobilization of Pd and Au nanoparticles is described. Complete coverage of D. desulfuricans flagellar filaments by Pd(0) nanoparticles was obtained via the H(2)-mediated reduction of Pd(NH3)4]Cl2 but similar results were not obtained using HAuCl4. The introduction o…
Polarization of low-lying excitonic bands in finite-size semiconducting single-walled carbon nanotubes (SWNTs) is studied by using quantum-chemical methodologies. Our calculations elucidate properties of cross-polarized excitons, which lead to the transverse optical absorption of nanotubes and presumably couple to int…
The paper reports on the possibility of short- and long-range plasmon sensing using transmission UV/vis spectroscopy. The influence of silicon oxide (SiO x ) overlayers (0–310 nm), deposited on glass coated with gold nanostructures (formed by thermal evaporation and post-annealing at 500 °C) modified glass interfaces,…
We report the exact solution of the spectral problem for a graphene sheet framed by two armchair- and two zigzag-shaped boundaries. The solution is found for the pi electron Hamiltonian and gives, in particular, a closed analytic expression of edge-state energies in graphene. It is shown that the lower symmetry of gra…
Abstract Two series of biodegradaable polyvinyl alcohol (PVA)/starch blends, i.e., PVA with/without plasma treatment (PP/P series), were produced by single‐screw extruder. The influences of plasma pretreatment and PVA content on the tensile properties, thermal behaviors, melt flow index, and biodegradability of blends…
In this study, thin-film samples of semicrystalline block copolymer (BCP), polystyrene- b -poly( l -lactide) (PS−PLLA), were prepared by solution-casting from dichloromethane solution (1 wt % of PS−PLLA). As observed by polarized light microscopy (PLM), banded spherulites can be found in the PS−PLLA thin-film samples…
The hydrogen storage reaction ScH 2 + 2LiBH 4 → ScB 2 + 2LiH + 4H 2 (8.91 wt %), based on the thermodynamic destabilization of LiBH 4, is predicted to have a reaction enthalpy of Δ H 300K = 34.1 kJ/mol H 2 . The isothermal kinetic desorption behavior in this system was measured. At temperatures up to 450 °C, less than…
The Aurivillius compound ${\mathrm{Bi}}_{4}{\mathrm{Ti}}_{3}{\mathrm{O}}_{12}$ exhibits a single phase transition from a tetragonal high-temperature phase to a ferroelectric state. By means of first-principles calculations guided by a complete symmetry analysis of the experimental distortion, we confirm $B1a1$ as the…
A route for producing polyaniline nanotubes using the inner eggshell membrane as a template is demonstrated. Because the template substitutes the inner eggshell membrane with the outer eggshell membrane in the same reaction process, the resulting morphology of polyaniline correspondingly changes. A series of experimen…
A polyHIPE is a cross-linked, porous polymer synthesized through polymerization in the external phase of a high internal phase emulsion (HIPE). Crystalline polyHIPE polymers were synthesized through copolymerization of stearyl acrylate and divinylbenzene (DVB). Polymerizations initiated at the water/organic interface…
PACS: 71.35.Cc, 71.15.Mb, 78.20.-e.-- A Comment on the Letter by B. Arnaud et al., [Phys. Rev. Lett. 96, 026402 (2006).
We have investigated the effects of atomic disorder on the electronic structure and some physical properties of ${\text{Co}}_{2}\text{CrAl}$ Heusler alloy (HA) films. Flash evaporation onto glass substrates at different temperatures (from 150 to 750 K) and postannealing at various temperatures were employed to manipul…
Dispersion and exfoliation of carbon nanotubes (CNT) by water soluble dispersants such as surfactant, polymer or protein is a key step toward the application of carbon nanotubes in composite materials, biochemical and biomedical applications. Upon dispersion, the solution phase separates into dispersed nanotubes in th…
We study the supercurrent in a superconductor/ferromagnet/superconductor graphene junction. In contrast to its metallic counterpart, the oscillating critical current in our setup decays only weakly upon increasing the exchange field and junction width. We find an unusually large residual value of the supercurrent at t…
We report on the synthesis and characterization of a new type of diblock copolymer that is composed of two side-chain liquid crystalline polymers (SCLCP1- block -SCLCP2). The diblock copolymer of poly{6-[4-(4-methoxyphenylazo)phenoxy]hexyl methacrylate}- block -poly{6-[4-(4-cyanophenyl)phenoxy]hexyl methacrylate} (PAz…
Rapid alignment of proteins in terms of domains (RAPIDO) is a web server for the 3D alignment of crystal structures of different protein molecules in the presence of conformational change. The structural alignment algorithm identifies groups of equivalent atoms whose interatomic distances are constant (within a define…
Abstract The addition of small percentages of Na + ‐montmorillonite (NaMMT) nanoclay appears to improve considerably the performance of thermosetting urea‐formaldehyde (UF) resins used as adhesives for plywood and for wood particleboard. X‐ray diffraction (XRD) studies indicated that NaMMT loses the periodic atomic st…
The generation of hydroxyl (OH) radicals was investigated during ultrasonic irradiation and in the presence of TiO(2). The effect of TiO(2) on an ultrasonic system's oxidation power was evaluated by examining the oxidation of salicylic acid. The generation of the salicylic acid derivatives, 2,3-dihydroxybenzoic acid (…
New high-flux synchrotron radiation circular dichroism (SRCD) beamlines are providing important information for structural biology, but can potentially cause denaturation of the protein samples under investigation. This effect has been studied at the new CD1 dedicated SRCD beamline at ISA in Denmark, where radiation-i…