Materials Literature
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Making good electrical contacts to nanodevice channels is crucial for device performance. Carbon-based nanomaterials are studied and compared to each other as the contact materials for graphene nanoribbons (GNRs) by atomistic quantum transport simulations. A monolayer graphene that has an AB stacking structure on the…
Abstract The objective of this study is to understand the high temperature corrosion behaviour of the ferritic stainless steel type AISI 441 (18CrTiNb), a candidate for SOFC interconnectors, under dry synthetic fermentation biogas (CH 4 + CO 2 mixtures), possibly used at the anode side of the cell. Thermodynamic analy…
Block copolymers forming glassy spheres in the matrix of rubbery chains can exhibit elastomeric properties. It is well known that the spherical microdomains are arranged in the body-center cubic (bcc) lattice. However, recently, we have found packing in the face-centered cubic (fcc) lattice, which is easily transforme…
Effect of rare earth (RE) metals addition on the microstructure, formation of Fe–Zn intermetallics and corrosion resistance of the batch galvanising Zn–0·18Al coating were studied. Microstructure of the coating was observed using optical microscopy, scanning electron microscopy and transmission electron microscopy. Sa…
We have measured shot noise in metallic single-walled carbon nanotubes of length L=1 μm and have found strong suppression of noise with increasing voltage. We conclude that the coupling of electron and phonon baths at temperatures Te and Tph is described at intermediate bias (20 mV<Vds≲200 mV) by heat flow equa…
Polyaniline (PANI) microtubes with a hexagonal cross-section are successfully synthesized by a self-assembly process in the presence of 8-hydroxyquinoline-5-sulfonic acid (HQS) as a dopant and FeCl(3) as an oxidant. The wall thickness of the PANI/HQS microtubes can be adjusted by the content of the oxidant. It is prop…
The effect of titanium on magnesium nanoparticle formation is investigated in relation to the importance of Mg in hydrogen storage. Addition of Ti reduces the Mg-nanoparticle sizes in the range of 5–20 nm and leads to less protective Mg-oxide shells. This in return accelerates the evaporation of Mg that leads to hollo…
A novel anticorrosion material, copper/linear low density polyethylene (Cu/LLDPE) nanocomposites, was prepared via melt-blend technique. X-ray diffraction (XRD), scanning electron microscope (SEM), energy-dispersive spectrometer (EDS), salt spray test, thermogravimetric analysis (TG), mechanical properties test and ba…
The pedogenic development of volcanic ash mantles within the interior U.S. Pacific Northwest is thought to be a function of the interaction between climatic regimes, plant communities, eolian reworking, and colluvial mixing with subsurface soil parent materials. Little research, however, quantitatively characterizes t…
Dy 53.8 Co 17.3 Al 28.9 bulk metallic glass with a diameter of 3 mm exhibits spin-glass behavior and large coercivity and remanence. Hydrogenation of Dy53.8Co17.3Al28.9 suppresses the magnetic transition temperature and removes coercivity and remanence because of the expansion of average interatomic distance. The adva…
The production of a cultured pearl is the result of a complex interplay between the donor and recipient oysters. However, there is a paucity of information on the relationship between donor and recipient oyster gene expression patterns and pearl quality. Shell matrix proteins affect not only the formation of the shell…
Abstract SnO 2 /CuO/polymer flexible thin films were prepared by a solution casting technology and characterized by high‐resolution TEM and XRD. The influences of key operational parameters on photocatalytic decolorization of azo dye (Biebrich Scarlet Red, BSR) were investigated systematically. The results showed good…
We report on the electronic properties of both amorphous and polycrystalline zinc-indium oxide thin films with similar degenerate electron concentrations just above the insulator-to-metal transition. The highest electron mobilities occur in amorphous oxide films deposited at 100 °C; for these, structural disorder is o…
Secondary electron yield from individual multiwalled carbon nanotubes is investigated for a wide range of primary beam energies (0.5–15 keV). By using a simple experimental procedure under an optical microscope, we make suspended nanotubes, which are free from interaction with the substrate during electron yield measu…
A series of Fréchet dendronized poly(p-benzamide)s have been synthesized. To attach the dendron-functionalities to the poly(p-benzamide) backbone, a propargyl side chain was introduced to p-aminobenzoic acid. Then, copper catalyzed azide-alkyne cycloaddition was used to click a first generation (G(1)), respectively, a…
Fluorescent image patterns of a substituted acetylene polymer film with a large FFV were successfully obtained by a µCP method using several kinds of chemical ink compounds. PO and SCA generated positive-type fluorescent image patterns. On the other hand, an ethanolic solution of DNT generated a negative-type fluoresc…
The 2π-steradian (full hemisphere) Si 2p and C 1s photoelectron intensity angular distributions (PIADs) of the 6H-SiC(0001) surface 4° off towards the [1\bar100] direction were measured. In a bulk crystal, pairs of mirrored local atomic sites with respect to the 1\bar100 planes exist. Thus, a sixfold symmetry is expec…
Electronic and magnetic properties of bilayer zigzag graphene nanoribbon (bZGNR) are studied using pseudopotential density functional method. The edge atoms in the top and bottom layers of bZGNR make a weak hybridization, which leads to electronic structures different from monolayer ZGNR. For asymmetric bZGNR, where t…
Nonradiative energy transfer from indirect bandgap InAs/AlAs quantum dots (QDs) to direct bandgap InAs/AlGaAs QDs was studied by steady-state and transient photoluminescence. We demonstrate that long excitonic lifetime in donor InAs/AlAs QDs allows one to extend the efficient exciton energy transfer between coupled QD…
Samples of 1 at% metal (Al, Co, Cr, Cu, Mo, Nb, Ni, Ru, Si, V, W, Zr)-doped β-rhombohedral boron (β-boron) were prepared by spark plasma sintering and their thermoelectric properties were examined in the temperature range from 353 K to 1073 K. It was found that V-doped β-boron exhibited the largest dimensionless figur…