Materials Literature
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The effects of catalyst and external electric field on hydrogen storage were evaluated for mesoporous nickel oxide and magnesium oxide. When Pt was introduced into the metal oxides, the capacity of hydrogen adsorption increased remarkably. Furthermore, the measurements of hydrogen adsorption were also carried out on m…
Abstract Reaction of a series of dodecadentate ligands (H4L), 1,4,8,11-tetrakis(salicylideneaminoethyl)-1,4,8,11-tetraazacyclotetradecane and its substituted derivatives, with copper(II) salts afforded dinuclear copper(II) complexes, [Cu2L], which were characterized by IR and UV–vis–NIR spectroscopy, and temperature d…
We present a reaction mechanism for CO oxidation at the $\text{Ru}(0001)\text{\ensuremath{-}}(1\ifmmode\times\else\texttimes\fi{}1)$ surface. By means of density-functional theory studies, we compare the reactivity of flat and stepped regions of the Ru(0001). We find that at saturation oxygen coverage, where the flat…
The unique electronic properties of single-walled carbon nanotubes (SWNTs) can be used to generate a current response from visible light. Vertically aligned single-walled carbon nanotube arrays were created on an optically transparent electrode (fluorine-doped tin oxide coated glass, FTO) by a self-assembly process us…
The ability to alter the thermal and mechanical properties of nanostructures by tailoring nanoscale morphology has led to vast activity in applications such as high figure of merit ( ZT ) thermoelectric, microelectronic and optoelectronic devices. Two types of nanostructures that have gained significant attention are…
Here we study the calorimetric and magnetic behaviour of melt-spun LaFe 11.6 Si 1.4 , a potential magnetic refrigerant material system that exhibits the rare combination of a large entropy change and low thermal and magnetic field hysteresis. We are able to separate the calorimetric contribution from latent heat and c…
Magnetism and magnetocaloric effect in nanocrystalline La0.67Ca0.33Mn0.9V0.1O3 synthesized by nebulized spray pyrolysis, Nisha, P, Pillai, S Savitha, Darbandi, Azad, Misra, Ajay, Suresh, K G, Varma, Manoj Raama, Hahn, Horst
In this Letter, we present a simple and reproducible method for generating polystyrene (PS) nanoneedle arrays by utilizing the trapping of inorganic silica particles at the polystyrene/air interface via capillary wetting of a thermoplastic polystyrene polymer and SF(6) reactive-ion etching. A monolayer of silica micro…
An efficient synthetic method for preparing corannulenoporphyrins is described. Nitrocorannulene was reacted with ethyl isocyanoacetate in the presence of a phosphazene base to generate the pivotal corannulenopyrrole intermediate. Following cleavage of the ethyl ester moiety with KOH in ethylene glycol at 180-190 degr…
The geometric and electronic structures of MoO3 and MoO 2 have been calculated using the generalized gradient approximation to density functional theory. The calculated cross-section weighted densities of states are compared with high-resolution X-ray photoemission spectra. There is very good agreement between the cal…
Water-in-oil-in-water (W/O/W) double emulsions were prepared and the rate of release of magnesium ions from the internal to the external aqueous phase was followed. Sodium caseinate was used not only as a hydrophilic surface-active species but also as a chelating agent able to bind magnesium ions. The release occurred…
Methyl abstraction from a neutral aluminum complex stabilized by a salen-like fluorinated dialkoxide-diimino ligand yields the corresponding cationic species, which exists as a five-coordinate Et 2 O adduct in the solid state and in solution. This complex promotes the cationic polymerization of propylene oxide and p -…
Graphene nanoribbons are semiconductor nanostructures with great potentials in nanoelectronics. Their realization particularly with small lateral dimensions below a few nanometers, however, remains challenging. Here we theoretically analyze zigzag graphene nanoribbons created in a graphane substrate (a fully saturated…
This paper reports on the synthesis of the mesoporous CMK-3 carbon carried out using the SBA-15 silica as a template and its chemical modification by nitric acid treatment at room temperature. The nitric-acid-modified carbon, CMK-3AN, was used to prepare other carbon samples by thermal treatments at 700 and 900 °C, wh…
Novel nano Bi spheres and hexagonal disks have been synthesized via the thermolysis of a bismuth-thiolate precursor in a mild solventless condition with the help of capping reagents that have shown an isotropic or anisotropic absorption tendency on the Bi crystal faces. Various techniques such as X-ray diffraction, el…
The purpose of this research was to gain insight into how well women were protected from thermal hazards when wearing garments designed for women compared to garments designed for men. A three-dimensional body scanner was used to measure the size and distribution of air gaps between a female mannequin and thermal prot…
We investigate a promising organic/inorganic hybrid composite for solution-processable optoelectronics made by lead sulphide nanoparticles and fullerene derivatives, which combine the sensitivity of PbS to the infrared spectrum with the good electron transport properties of fullerenes. Charge separation is the crucial…
To understand the role of intramolecular degrees of freedom in forming mesophases, thermodynamic analysis was performed for 4- n -alkyl-4′-isothiocyanatobiphenyl ( n TCB, n is the number of carbon atoms in the alkyl group), which exhibits the crystal E (CrE) phase as a mesophase. The heat capacities of 2TCB and 5TCB w…
ABSTRACT\nCuO nanostructures with different morphologies, such as single-crystal nanowires, nanoribbons and nanorods, have been grown by thermal oxidation of copper in the (380-900) ?C temperature range. Cathodoluminescence spectra of the nanostructures show a band peaked at 1.31 eV which is associated to near band ga…
The diameter of single-walled carbon nanotubes (SWNTs) is an important characteristic to determine their electronic properties and direct further applications in electronics and photonics. A demand currently exists for an accurate and rapid method of evaluating the mean diameter and diameter distribution of bulk SWNTs…