Materials Literature
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A bidimensional analysis of 6 mm hexagonal resonators is described using a double orthonormal basis set for the expansion of field quantities. The analysis takes into account the electrical voltage source and by means of a unique formalism along with a single calculation restitutes all the types of resonance whatever…
The stability of oxygen vacancies across the Ge–HfO2 interface is studied through semilocal and hybrid density-functional calculations. On the semiconductor side, the formation energies are obtained for substoichiometric GeOx of varying x through the use of a bond-energy model. On the hafnium oxide side, the interface…
Experimental study of ion sub-Larmor-scale turbulence by microwave scattering diagnostics developed at FT-2, DIII-D and NSTX tokamaks is reviewed. Peculiarities of electron temperature gradient (ETG) turbulence identification in dynamical experiments at these machines are discussed. The FT-2 experimental results conce…
Exchange bias properties have been investigated in a $({\text{Sm}}_{1\ensuremath{-}x}{\text{Gd}}_{x}{\text{Al}}_{2}/{\text{SmAl}}_{2})$ bilayer (for $x=0.028$) with perpendicular magnetization, an original exchange-coupled system based on the zero magnetization ferromagnet $({\text{Sm}}_{1\ensuremath{-}x}{\text{Gd}}_{…
Abstract A luminescent PtTFP/PMSP polymer coating was prepared for the oxygen partial pressure visualization inside a PEFC. PMSP formed a smooth and tough coating as a highly oxygen‐permeable matrix with a thickness of ca. 2 µm in which the PtTFP was homogeneously dispersed. The coating displayed a strong red luminesc…
The authors investigate efficiency roll-off in 5,6,11,12-tetraphenylnaphthacene (rubrene)-based mixed single layer top-emission organic light emitting devices by codoping with special additive dopants. The efficiency roll-off is suppressed after codoping rubrene with phenoxazone (Nile red). Due to dual nature of rubre…
Highly stable covalently attached multilayer films were constructed by visible-light irradiation of hydrogen-bonding directed multilayer films of poly(allylamine) and poly(4-vinylphenol).
The relationship between the photocatalytic activity and the arrangement of metal cations was investigated with Sr-Al-Nb-O double perovskite (SAN) synthesized at 1400 °C for various calcination times using a solid state reaction. Transmission electron microscopic observation revealed that SAN particles had a domain st…
The magnetoelastic problem for a superconductor slab placed in a time-dependent magnetic field is considered. Two major components of the flux (vortex) motion: flux creep and viscous flux flow have been considered, among which the logarithmic dependence of activation energy on the current density is assumed for the cr…
In flow cytometry, the quantitation of fluorophore-tagged ligands and receptors on cells or at particulate surfaces is achieved by the use of standard beads of known calibration. To the best of our knowledge, only those calibration beads based on fluorescein, EGFP, phycoerythyrin and allophycocyanine are readily avail…
Two novel guanidiniocarbonyl pyrrole-pyrene conjugates 3 and 4 as spectroscopic probes for ds-polynucleotides were synthesized and their interaction with different ds-DNAs/RNAs studied. Compared to a previously reported first set of conjugates (1 and 2) the significant extension and increased rigidity of the central p…
Quantitative dynamics of methyl groups in 9-fluorenylmethyloxycarbonyl-leucine (FMOC-leu) have been analyzed and compared with earlier studies of methyl dynamics in chicken villin headpiece subdomain protein (HP36) labeled at L69, a key hydrophobic core position. A combination of deuteron solid-state nuclear magnetic…
A one-dimensional model has been developed to aid in the rapid screening of three-dimensional ͑3D͒ anode configurations for a direct methanol fuel cell.The model was fitted to experimental data for a single electrode structure having 1, 2, or 4 mg cm -2 , and the resulting parameters were used in the model to qualitat…
There is increasing evidence that a polypeptide chain in solvent conditions that favor folding may have transient structure and is significantly more compact than a fully denatured chain. However, there is no sequence-dependent model to capture such interactions. In this work, we present a simple and computationally i…
Techniques typically used for studies of polymer dynamics such as NMR relaxometry, quasielastic neutron scattering, multiple-quantum build-up NMR, dielectric relaxation spectroscopy, and mechanical relaxation are specified and commonly classified in terms of correlation functions. Two categories of correlation functio…
We have measured the quantum-interference magnetoresistances in two single indium tin oxide (ITO) nanowires between 0.25 and 40 K, by using the four-probe configuration method. The magnetoresistances are compared with the one-dimensional weak-(anti)localization theory to extract the electron dephasing length ${L}_{\en…
Rheological characterization of inks for the inkjet printing application has been considered to be essential with dissemination of applying the inkjet printing technology into many related industries. In this study, the high concentrated Ag suspension was prepared using poly(acrylic acid) as both a polyelectrolyte and…
Magnetotransport studies were performed on hybrid FePt/Fe3O4 core/shell nanoparticle systems. The linear relationship of LnR versus T−1/2 with and without a magnetic field confirms the physical picture of thermally assisted interparticle tunneling. A sign inversion of tunneling magnetoresistance (TMR) from negative to…
GaP nanowire, a potential material for new devices where optical and electronic applications can be merged, suffers some limitations because it presents indirect band gap. Using first principles calculations we demonstrate that, due to confinement effects, the band gap not only is enlarged when in a nanowire form, but…
The solubility of silicon in high-permittivity (high-κ) oxides significantly affects the performance of field-effect transistors. Our comparative study of silicon impurities in La2O3 and HfO2 reveals that the stability of silicon at substitutional sites strongly depends on its coordination number. When substituted for…