Materials Literature
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Epitaxial single-crystal Ge1−xMnx ferromagnetic-semiconductor films were fabricated on Ge(001) substrates by molecular beam epitaxy. All the samples are ferromagnetic and have strong magnetic anisotropy indicated by different magnetization in plane and out of plane. The electrical transport of the films obeys Efros va…
A series of poly(9,9-dihexylfluorene-2,7-diyl- co -9,9-dihexylfluorene-3,6-diyl) copolymers of varying composition were synthesized by Suzuki polymerization. Their composition and properties were determined by NMR, UV−vis, and fluorescence spectroscopy and cyclic voltammetry. The incorporation of 3,6-fluorene units gi…
Abstract Some of the diarylethene derivatives were found to undergo photoisomerization reactions between two isomers even in the single-crystalline phase. The two isomers have different electronic as well as geometrical structures. The electronic structure change induces the reversible color change of the crystal. Sin…
We present a simple technique to fabricate rubber-toughened biopolymer/organoclay nanocomposite coatings with highly water repellent surface wetting characteristics and strong adhesion to metal surfaces. The technique combines the principles of phase inversion and atomization of multicomponent polymer/organoclay suspe…
The interaction of D 2 O with a thick BaO film (≥20 monolayer equivalent (MLE)) on ultrathin Al 2 O 3 /NiAl(110) was investigated with temperature programmed desorption (TPD) and infrared reflection absorption spectroscopy (IRAS). Upon D 2 O exposure of a thick BaO film, amorphous barium hydroxide formed at room tempe…
Interfacial water layers attract more and more attention in both material sciences and life sciences because of two characteristics that depend on the polarity of the surfaces involved: crystalline order and surface stability. Their interplay allows us to understand friction at the nanoscale under realistic conditions…
The present paper reports the synthesis of cuprous oxide particles through pathological route by using glucose solution as reducing agent in Benedict qualitative reagent. The synthesized material has been investigated by scanning electron microscopy (SEM) and x-ray diffraction studies. SEM shows uniform distribution o…
Lepidopteran wing scales and Drosophila bristles are considered homologous structures on the basis of the similarities in their cell lineages. However, the molecular mechanisms underlying scale development are essentially unknown as analysis of gene function in Lepidoptera is sorely limited. In this study, we used the…
Surface characteristics of the prepared nickel catalysts containing 7, 10, and 13 wt% Ni w/w over different supports—silica gel, γ-alumina, and aluminosilicate—were investigated. Surface areas, total pore volumes, and average pore radii were determined for all catalysts. Pore analysis was discussed based on Vl-t plots…
Adsorption and its dynamical process of polymer mixtures consisting of long and short alkane molecules around a carbon nanotube (CNT) are studied with molecular-dynamics (MD) simulations and master equation. Preferred adsorption is found for long chained molecules compared to short ones, due to favorable interfacial i…
We investigated cluster formation in model colloids where the interparticle potential beyond the collision diameter includes a short-ranged attraction and a longer-ranged repulsion. The structure and thermodynamic properties of the model system can be accurately described by the first-order mean-spherical approximatio…
A one-step process to form carbon nanotubes coated with cobalt oxide nanoparticles, using spray pyrolysis of cobalt(II) acetylacetonate−xylene solutions, has been developed. Both microstructure and chemical composition of carbon nanotubes covered with cobalt oxide nanoparticles depend on the concentration of the Co(ac…
In this paper we show the relevant role of F-content control in pnictide oxide superconductors by providing a direct evidence of F-loss in samples prepared by means of routine synthetic methods.
An efficient quenching of the photoluminescence spectrum was observed for the quantum dot (QD)-multiwalled carbon nanotubes (MWCNTs) nanocomposite. While the lifetime of the blue emission from ZnSe shell was significantly reduced, it did not exhibit any obvious change in the red emission from CdSe core-crystal. This d…
While metal-doped mesoporous silicate SBA-15 has been studied extensively for its catalytic properties, the adsorption of molecular hydrogen in this system has not been considered. We report herein that the titanium-doped material (10% Ti) adsorbs nearly twice the amount of hydrogen at 77 K and a pressure of 25 bar th…
A single impurity problem is investigated for multiband s-wave superconductors with different sign order parameters (+-s-wave superconductors) suggested in Fe-pnictide superconductors. Not only intraband but also interband scattering is considered at the impurity. The latter gives rise to impurity-induced local bounds…
The enhanced transmission through a single subwavelength slit surrounded with periodic grooves has been simulated by a numerical finite-difference time-domain method. We simulated the transmission as functions of slit depth (film thickness) and groove depth, and also the field distributions in the slit and grooves. Th…
The integration of multifunctional oxides on semiconductor devices requires the formation of single-crystal-like oxide templates directly on silicon. We report the fabrication of quasi-single-crystal (001) SrTiO3 templates on (001) Si by annealing 100 nm thick molecular beam epitaxy-grown epitaxial SrTiO3 films at 900…
Cryogenic-temperature technology is a promising and practical solution for the intense demand for high performance electronics. By utilizing the unique hysteretic behavior of perovskite (La,Pr,Ca)MnO3 observed either as a function of temperature and/or applied electric fields, we discovered low-temperature phases with…
Results of the first time-resolved in situ neutron diffraction measurements during absorption of deuterium in Li 2 Mg(ND) 2 reveal the occurrence of a two-stage reaction. The first stage involves the reaction to LiND 2, LiD, and Li 2 Mg 2 (ND) 3, with the second stage leading to full deuteration to Mg(ND 2 ) 2 and LiD…