Materials Literature
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NiTi shape memory thin films are potentially desirable for micro-electro-mechanical system (MEMS) actuators, because they have a much higher work output per volume and also a significantly improved response speed due to a larger surface-to-volume ratio. A new technique using a temperature controllable atomic force mic…
F-passivated ZnO nanocrystalline films were prepared by thermal oxidation of ZnF 2 films. ZnF 2 films were deposited on a Si wafer by the electron beam evaporation technique. X-ray diffraction and x-ray photoelectron spectroscopy were used to study the structural changes of ZnF 2 as a function of oxidation temperature…
The collagen triple helix is one of the most abundant protein motifs in animals. The structural motif of collagen is the triple helix formed by the repeated sequence of -Gly-Xaa-Yaa-. Previous reports showed that H-(Pro-4(R)Hyp-Gly)(10)-OH (where '4(R)Hyp' is (2S,4R)-4-hydroxyproline) forms a trimeric structure, where…
Experimental results of breakdown voltage, tanδ and the parameters of partial discharges for multilayer Polyfilm insulation are presented. It is shown that the breakdown voltage of multilayer film insulation may be increased approximately by 70% compared with single-layer insulation of the same thickness due to the co…
The influence of the Co3+ spin state on the optical properties of LaCoO3 and HoCoO3 , L V Nomerovannaya, A A Makhnev, S V Streltsov, I A Nekrasov, M A Korotin, S V Shiryaev, G L Bychkov, S N Barilo, V I Anisimov
There is an increasing demand for eco‐friendly inhibitors for use in cooling water systems. Both calcium gluconates and molybdate are eco‐friendly, non‐toxic chemicals. The corrosion inhibition of calcium gluconate and sodium molybdate on carbon steel in neutral aqueous media was evaluated by means of weight loss, ele…
The high-pressure Raman spectra of ferroelastic NaAl(MoO4)2 have been measured at room temperature. The studies indicated that this crystal exhibits two pressure-induced phase transitions at about 1.1 and 3.3 GPa. The first transition is connected with slight rotation of the MoO4−2 tetrahedra with loss of the inversio…
The antiferromagnetic resonance modes have been studied on a stoichiometric single crystal of ${\mathrm{L}\mathrm{a}\mathrm{M}\mathrm{n}\mathrm{O}}_{3}$ well below the N\'eel temperature, with a static magnetic field along all three crystallographic directions. A canted antiferromagnet model, with biaxial anisotropy a…
The thermal decomposition of dimethyl methylphosphonate (DMMP) has been studied in ultrahigh vacuum by temperature programmed desorption (TPD) and X-ray photoelectron spectroscopy (XPS) on Ni clusters and films deposited on TiO 2 (110). The four different Ni surfaces under investigation consisted of small Ni clusters…
Nuclear magnetic resonance investigations of atactic polystyrene emulsions yield direct evidence that the polymer surface exhibits a rather well-defined molten layer. Its thickness $d$ grows continuously as the temperature is increased towards the bulk glass transition, according to $d\ensuremath{\propto}({T}_{g}\ensu…
Complexation of antitumor drug, doxorubicin (DOX), with poly(acrylic acid) (PAA) in buffer solutions was examined. The DOX-to-PAA binding was governed by electrostatic and stacking interactions resulting in a complex of characteristic composition with a PAA/DOX = 1.6 molar ratio. Sizes of the complex particles were fo…
We study the transmission coefficient and thermal conductivity for acoustic phonons crossing a T-shaped quantum waveguide at low enough temperatures by use of the scattering-matrix method. Our results show that relatively small changes in the stub length and width can induce strong variations in the phonon transmissio…
Well-defined and covalently bonded poly(4-vinylbenzyl chloride) (PVBC) brushes on single-crystal silicon were prepared by surface-initiated reversible addition−fragmentation chain transfer (RAFT)-mediated graft polymerization of 4-vinylbenzyl chloride (VBC) on hydrogen-terminated Si(100) (Si−H) surface. Surface initia…
This paper describes the gelation of symmetric dendrimers based on building blocks constructed from L-lysine. These dendrimers form gel-phase materials in nonpolar organic solvents. The thermal properties and concentration dependence of the gelation were investigated, and it was found that there was a clear dendritic…
Energy band diagrams of LaCuOCh (Ch = S, Se and Te) were calculated by a full-potential linearized augmented plane-wave method. The calculations, based on the local density approximation with/without an on-site Coulomb repulsion parameter, were to examine the energy levels of La 4f states. The results of the calculati…
We investigate theoretically, and numerically, the shape of a droplet of an isotropic fluid immersed in a nematic liquid crystal in the presence of an interfacial layer of surfactant; the droplet size is assumed to be small compared to the extrapolation length of the nematic and homeotropic alignment is favored by the…
Samples of Co-MCM-41 with different pore diameters have been synthesized using organic templates with different alkyl chain lengths. The reducibility of cobalt in these highly stable samples was investigated by TPR and X-ray absorption spectroscopy. We have found that the reducibility correlates strongly with the pore…
In this paper, 200 years of modeling crystal growth and morphology are reviewed. From the discovery of the law of rational indices, the interplanar distance law of Bravais, Friedel, Donnay, and Harker, to more structural theories such as the Hartman−Perdok theory, as well as statistical mechanical cell models, we arri…
Molecular dynamics simulations of nanoscratching are performed with emphasis on the correlation between the scratching conditions and the defect mechanism in the substrate. More than six million atoms are described by the embedded atom method (EAM) potential. The scratching process is simulated by high-speed ploughing…
Abstract Surface‐enhanced resonance Raman spectroscopy (SERRS) was used for the semi‐quantitative analysis of the anthraquinone dyes alizarin and purpurin, using aggregated citrate‐reduced silver colloids. Laser excitation wavelengths of 514.5 and 632.8 nm were employed. The limits of detection for the analysis of ali…