Materials Literature
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β - Ga 2 O 3 nano- and microwires with diameters ranging from tens of nanometers to about one micron and lengths of up to tens of microns, have been obtained by sintering Ga2O3 powder under argon flow. The structures have been investigated by cathodoluminescence in the scanning electron microscope. The samples showed…
Networking: In contrast to 3D structured [Ru2(O2CR)4]3[MIII(CN)6] (M=Cr, Fe, Co) in which R=Me, 2D layered network structures form when R=tBu (see structure orange Ru, dark blue Cr, light blue N, red O, black C). The magnetic properties of 2D materials are investigated to further understand the magnetostructural relat…
We propose surface plasmon amplification by stimulated emission of radiation (spaser) in nanolenses: Linear center-symmetric chains of metal nanospheres, embedded in an active medium of quantum dots. Predominantly amplified are the dark, odd-parity eigenmodes, which do not suffer dipole-radiative losses and produce co…
Oxo alcoxo metallic clusters can be employed as inorganic nanobuilding blocks to obtain well-defined organic-inorganic hybrid materials. A better understanding of the surface reactivity of the clusters should allow optimization of the elaboration of hybrid materials through a better control of the hybrid interface. Th…
The reversible photoconversion of self-assembling dithienylcyclopentene photochromic switches between an aggregated and nonaggregated state is manifest at the macroscopic level by a fully reversible sol–gel phase transition and results in spatially confined structure formation in an inhomogeneous optical field. The re…
The propagation of waves in a metamaterial consisting of split ring resonators (SRRs) and metallic rods is considered in several steps. The first involves the rods in isolation, the second the SRRs in isolation, and the third a combination of the two, which includes the coupling between neighboring SRRs and allows the…
In this article, we describe a series of new complex salts in which electron-donating cis-{Ru(II)(NH3)(4)}(2+) centers are connected to two electron-accepting N-methyl/aryl-pyridinium groups. These V-shaped complexes contain either monodentate 4,4'-bipyridyl-derived ligands or related chelates based on 2,2':4,4":4',4'…
We report on the growth of very high-quality Al-doped n-type ZnO epilayers on sapphire substrates using a radio-frequency (rf) magnetron sputtering technique combined with a rapid-thermal annealing. Photoluminescence (PL) and Hall measurements show that both the optical and electrical properties of the ZnO layers are…
The dynamics of a domain wall driven by a spin-polarized current in a mesoscopic system is studied numerically. Spin-mixing in the states of the conduction electrons is fully taken into account. When the Fermi energy of the electrons is larger than the exchange energy ($E_{\rm F}>J_{\rm sd}$), the spin precession indu…
We use a mapping of the quasi-2D electron liquid to a classical fluid and use the hypernetted-chain equation inclusive of bridge corrections, i.e., CHNC, to calculate the electron pair-distribution functions and exchange-correlation energies as a function of the density, layer width, spin-polarization and temperature.…
A pressure-induced linkage isomerization of the cyanide anion has been observed in single crystals of a chromium(III)-iron(II) Prussian blue analogue of formula K0.4Fe4[Cr(CN)6]2.8 square1.2.16H2O (1). Upon application of pressure in the 0-1200 MPa range, the cyanide ligand rotates and becomes C-bonded to the iron(II)…
We have studied the stability, the electronic, and the magnetic properties of Co2MnSi(001) thin films for 15 different terminations using density functional theory calculations. The phase diagram obtained by ab initio atomistic thermodynamics shows that in practice the MnSi, pure Mn, or pure Si terminated surfaces can…
Doubly luminescent core/shell structure nanoparticles were synthesized for biological detection. In the first step gadolinium oxide (Gd 2 O 3 ) core doped with the luminescent Tb 3+ ions was obtained by applying, with modifications, the polyol route, which allows direct precipitation of oxide nanoparticles in a polyal…
The dielectric properties of tantalum doped BaTi0.85Zr0.15O3 were investigated. The conventional solid state reaction method was used to make the ceramic samples. The composition was close to the pinch point of the three structure phase transitions in BaTiO3. Powder X-ray diffraction result indicated that the samples…
A phosphine oxide polymer was developed using bis(dichlorophosphino)ethane and poly(ethylene glycol). This polymer system was used to transfer various nanoparticles from organic solvents to water, retaining their physical properties and reactivities.
The behavior of nitrogen in ZnO thin films grown by high-vacuum plasma-assisted chemical vapor deposition is examined. Highly oriented (002) films doped with 0–2at.% N were characterized by x-ray photoelectron spectroscopy, x-ray diffraction (XRD), Seebeck, and Hall measurements. XRD measurements revealed that the zin…
Colleges and universities use labpacks to dispose of much of their chemical waste. Excessive identification of material as acute hazardous waste or including the weight of containers and packing materials may raise the regulatory status of a program leading to additional paperwork and operational restrictions. Small a…
By use of a laser-monitoring observation technique, the solubilities of potassium p -chlorophenoxyacetate in ethanol + water were measured at temperatures ranging from (295.61 to 358.16) K using a synthetic method at atmospheric pressure. The experimental data were correlated with an empirical equation. Results indica…
Abstract In situ polymerization is the most successful technique for thermoplastics and thermosets for the preparation of well‐dispersed polymer‐layered silicate nanocomposites with desirable mechanical, thermal, and electrical properties. The efficiency of this approach depends significantly on the polarity of the mo…
Ferroelectric Bi3.25La0.75Ti3O12 (BLT) thin films were deposited on Pt∕Ti∕SiO2∕Si substrates by the polymeric precursor method. The films present c-axis preferred orientation after annealing at 700°C for 2h in conventional furnace. All the capacitors showed good polarization fatigue characteristics at least up to 1×10…