Materials Literature
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Lanthanide complexes of a hexaaza macrocyclic ligand containing acetohydrazide pendants (L) have been synthesised (Ln = La-Er, except Pm), and structural studies have been carried out both in the solid state and in aqueous solution. Attempts to isolate the complexes of the heaviest Ln(iii) ions (Ln = Tm-Lu) were unsuc…
We investigated the hierarchical structure of complex coacervate core micelles formed by mixing a supramolecular coordination polymer and a diblock copolymer. Cryogenic transmission electron microscopy (cryo-TEM) on those systems was only possible for very dilute samples and suggested the existence of wormlike micelle…
A low-environmental load surface modification technique for plating the fluorocarbon polymers films is developed using an atmospheric-pressure argon and acrylic acid vapor nonthermal plasma graft polymerization. The results of the T-type peeling test show that the peeling strength of copper plating on the treated PTFE…
Nanotechnology promises a plethora of benefits to society. Early research has established that some types of nanomaterials may be highly toxic to living systems, while others are seemingly inert. Nanotoxicology is a new field that has become the focus for risk assessment and management of nanomaterials. To address the…
Fluorophore-labeled glycodendrimers have potential use in the study of carbohydrate-protein interactions by fluorescence spectroscopy and imaging methods. The current solution-phase methods for preparation of such glycoconjugates are labour intensive. On the other hand, the intrinsically more efficient solid-phase met…
We have developed anode-supported solid oxide fuel cells (SOFCs) using and scandia-alumina–stabilized zirconia (SASZ) for the cathode and electrolyte, respectively, and employing a mixture of NiO and SASZ for the anode. Anode-supported SOFCs were fabricated using two types of NiO powder with different sintering charac…
N-Substituted glycine peptoid oligomers were synthesized to incorporate a photoresponsive azobenzene side chain. The ability of this side chain to undergo reversible photoisomerization was established, and the cis- to trans-azobenzene thermal isomerization of this side chain was investigated. Circular dichroism studie…
A focus of the current nanotechnology has shifted from routine fabrication of nanostructures to designing functional electronic devices and realizing their immense potentials for applications. Due to infusion of multifunctionality into a single system, the utilization of hetero-, core/shell and hierarchical nanostruct…
MgO is an important inorganic material, which can be used in many aspects, such as catalyst, toxic-waste remediation agent, adsorbent, and others. In order to make use of MgO, nano-MgO was prepared by ultrasonic method using Mg (CH3COO)2.2H2O as precursor, NaOH aqueous solution as precipitant in this paper. Effect fac…
The aqueous complexes of poly(ethyleneimine) (PEI), sodium dodecyl sulfate (SDS) and dodecyl maltoside (C12G2) have been studied under dilute conditions using dynamic light scattering, electrophoretic mobility, surface tension and pH measurements. According to the surface tension data the complexation between PEI and…
This paper presents a dispersive finite difference time domain (FDTD) method suitable for the analysis of electromagnetic field rotator (and cloaking) devices. The method employs a coordinate transformation which accurately accounts for the radial dependence of the permittivity and permeability tensors, with Drude mat…
Porous carbon nanofibers (CNFs) were synthesized on wafer uniformly by thermal decomposition of poly(ethylene glycol) with the presence of nickel catalyst at 600 °C under nitrogen atmosphere. High purity porous CNFs with diameters of 40−60 nm and a few micrometers in length demonstrated a unique character of graphitic…
A novel perylene diimide incorporating a tetradentate ligand was synthesized and the photophysical properties of its Cu(+), Cu(2+), and Fe(3+) complexes were investigated by fluorescence experiments.
Raman spectroscopy was applied to study the adsorbed hydrogen phase in porous materials at room temperature and under cryogenic conditions. A comparison between the Raman spectra of H(2) molecules adsorbed on single walled carbon nanotubes and on a Cu-based metal-organic framework reveals that the interaction strength…
The effects of BaSO 4 additions on the wetting of alumina by molten aluminum were studied by the sessile drop technique. To study the effect of BaSO 4 decomposition (1100–1150 ∘ C), the additions were treated at two temperatures 700 ∘ C (973 K) and 1450 ∘ C (1723 K), respectively. BaSO 4 additions at low and high temp…
In this work we investigated formation processes of both catalyst nanoparticles and single walled carbon nanotubes (SWCNTs) in a controlled premixed CH4–O2–Ar flame. Experimental measurements were conducted to study the formation mechanism of the catalyst, the interaction between the catalyst and SWCNTs, and the forma…
We have developed novel Pluronic/chitosan nanocapsules encapsulating iron oxide nanoparticles. These nanocapsules were produced by dispersing hydrophobically-modified iron oxide nanoparticles and amine-reactive Pluronic derivatives in an organic solvent, and subsequently emulsification in an aqueous chitosan solution…
The recent studies on grain refinement in several Cr–Ni ferritic stainless steels during large strain deformation at room temperature are critically reviewed. The paper is focussed on the mechanism of structural changes that is responsible for ultrafine grain development. It is concluded that the development of submic…
Single-wall carbon nanohorns (SWNHs) were synthesized by a gas-injected arc-in-water method with varied gas flow rate, arc current, and gas component to investigate their influence on the purity, the yield, and the structure of the products, in which the quenching rate of the carbon vapour in the optimized condition f…
The structural, optical, and electronic properties of two rare-earth molybdenum borate compounds, LnMoBO(6) (Ln = La, Ce), have been investigated by means of single-crystal X-ray diffraction, elemental analyses, and spectral measurements, as well as calculations of energy band structures, density of states, and optica…