Materials Literature
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Ni-decorated carbon nanotube (CNT) film of a networklike architecture has been formed on a stainless steel substrate by electrophoretic deposition (EPD) in CNT suspension containing nickel nitrate. Adsorption of nickel ions on the CNTs increases the measured zeta potential and consequently favors the dispersion and EP…
We show the design and synthesis of new perfluorinated nitrosopyrazolone-based ligands and the original method employed for their complexation of erbium ions in the presence of the co-ligand perfluorotriphenylphosphine oxide; the resulting chelate is non-hygroscopic, solution processable and possesses a NIR emission w…
Both Sn(II) and Sn(IV) chlorides were tested as sources for tin incorporation into an AlPO4-5 framework. N-Methyldicyclohexylamine (MCHA) was chosen as a structure-directing agent, taking advantage of its reported high specificity towards AFI-structured AlPO4-based materials. Pure AFI materials were successfully produ…
This paper reports a large volume change in a cholesterol based molecular gel in the presence of multi-amine as the gelling solvents dissociated from the gel in a dynamic manner. The release capability can be controlled by the ratio of multi-amine. The shrinkage capability can be restored and recycled by a gel–sol tra…
The synthesis and mesomorphism of new chiral imine compounds incorporating a fluorocarbon chain which have calamitic molecular shape and their complexes with copper(II) are reported. The liquid crystalline properties were investigated using polarised optical microscopy, differential scanning calorimetry and X-ray diff…
Porous anodic alumina is used in nanotechnology, electronics, and corrosion protection with the film morphology tuned by appropriate selection of anodizing electrolyte and anodizing voltage or current. Specifically, tailored potential–time or current–time regimes involving an initial voltage ramp may be used to modify…
Cycloreversion processes of three photochromic fulgide derivatives in toluene solution were investigated by means of picosecond and femtosecond laser photolysis methods. Femtosecond laser irradiation revealed that the cycloreversion processes upon visible one-photon excitation took place within a few ps in these three…
As a new member of the polyhydroxyalkanoate (PHA) family, the terpolyester poly(3-hydroxybutyrate-co-3-hydroxyvalerate-co-3-hydroxyhexanoate) (PHBVHHx) was evaluated for its biocompatibility for human umbilical cord Wharton's jelly-derived mesenchymal stem cells (WJ-MSCs). More WJ-MSC adhesion and proliferation were o…
TiO2 is commonly used as a brightening agent for paper, but may also be used on paper as a photocatalyst. The TiO2 aggregates that typically form in/on paper are inefficient both for brightening or photooxidation. We describe, for the first time, the preparation of homogeneously distributed, non-aggregated TiO2 partic…
Electrochromic properties of a series of Li x Ni y O films were studied to obtain the films that give a good reversible electrochromic reaction in a nonaqueous electrolyte solution.We paid attention to the lithium content in the films.The films were deposited by radio-frequency ͑rf͒ magnetron sputtering with Li x Ni y…
A teaching review is presented, introducing the basic principles of thermal motions of atoms in crystals: their definition as average displacements from equilibrium positions; their representation as ellipsoids; and the way in which their analysis can yield physical information. Thermal motion is placed in the context…
Room-temperature ferromagnetism was observed in Mn and Zn codoped SnO2 films grown on c-cut sapphires by using pulsed laser deposition technique. The valence of Mn ions in the codoped films is determined to be 2+ from x-ray absorption near edge spectroscopy. Moreover, the ferromagnetism is affected by the carrier conc…
Subsurface carbon species of Pd catalysts recently attracted considerable attention because they affect the selectivity of hydrogenation reactions. We calculated the migration of C atoms from the Pd(111) surface to interstitial subsurface sites to be energetically favorable. Yet, thermodynamically more stable is a gra…
Mesoporous ceria nanoparticles have, for the first time, been synthesized from cerium isopropoxide as precursor in a sol gel type process by controlled hydrolysis using reverse micelles. Water-filled reverse micelles have been facilitated by adding a non-ionic surfactant (TX-100) to an hydrophobic solvent (cyclohexane…
We have observed the effects of exposure to aqueous transition metal cations of freshly prepared, and thermally aged, layered double hydroxides (LDHs) of type Mg2Al(OH)6Cl·xH2O. For M(II) = Co(II), Ni(II), or Zn(II), freshly prepared material undergoes complete reconstitution to give products of composition (M(II)Mg)2…
High density p-type Bi0.5Sb1.5Te3 nanowire arrays are produced by a combination of electrodeposition and ion-track lithography technology. Initially, the electrodeposition of p-type Bi0.5Sb1.5Te3 films is investigated to find out the optimal conditions for the deposition of nanowires. Polyimide-based Kapton foils are…
Different nearly constant loss phenomena are investigated in borate glasses with compositions xNa(2)O.(1-x)B(2)O(3), for 0 < or =x< or = 0.3. The ionic conductivities caused by these effects are studied in wide ranges of temperature and frequency, spanning 4.3 K to 573 K and 100 mHz to 1 MHz, respectively. In a first…
Graphite intercalation compounds (GICs) have high electrical conductivities, large Seebeck coefficients, and low thermal conductivities as compared with their host graphite materials. Due to these properties, GICs are expected to act as effective thermoelectric materials. The thermoelectric figure of merit of the GICs…
A nonaqueous route based on the solvothermal reaction of alkaline earth precursors with aluminium isopropoxide in benzyl alcohol is introduced. This simple process leads to crystalline complex nanostructures of alkaline earth aluminates, which, up to now, could only be obtained by solid state reaction at temperatures…
By comparing the photocatalytic bactericidal effect on different crystal faces of bulk ZnO crystal, we found that an electron degradation mechanism dominates the photocatalytic processes of ZnO material.