Materials Literature
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We show, using ab initio density functional theory calculations, that Mn dimers adsorbed on graphene nanoribbons (Mn2/GNRs) present a magnetic bistability, as does the isolated Mn dimer. Our total energy results indicate that Mn dimers lying along the edge sites of zigzag GNRs represent the most likely configuration.…
The application of the microcellular co-extrusion method (Fig. 1) at specific parameters to obtain triple-layered coatings for single core electrical cables on the basis of PVC containing 0.1-1.0 % of a blowing agent has been presented. The changes observed in electrical energy consumption in the technological process…
This paper reports the design of a metamaterial absorber with direction-selective and polarisation-insensitive property. Both theoretical and simulated results reveal that the absorber has a distinct absorption point with direction selectivity at 7.48 GHz, which is related to the resonance of the metamaterial and is n…
GSAS instrument parameters are tabulated for a variety of laboratory and synchrotron diffractometers to give users an idea of the typical ranges of profile parameters when they generate their own instrument parameter files. For modern high-resolution laboratory diffractometers, the parameters fall in the ranges 0<…
In this work we have synthesized CdS nanocrystals with thermochemical method. CdSO4 and Na2S2O3 were used as the precursors and thioglycolic acid (TGA) was used as capping agent molecule. The structure and optical property of the nanocrystals were characterized by means of XRD, TEM, UV-visible optical spectroscopy and…
Abstract Summary: Nanocomposites containing multiwall carbon nanotubes (MWNT) were prepared by melt compounding with polypropylene and polyethylene. The samples were UV‐light irradiated in artificial accelerated conditions representative of solar irradiation (λ > 300 nm) at 60 °C in air. The chemical modifications…
This study investigated the effects of eutrophication and fish yield on the diatom community of Lake Fuxian by examining changes in species composition and abundance in sediment cores dating back 172 years. In the 1950s, four Chinese carp species were introduced into Lake Fuxian (an oligotrophic plateau lake) to enhan…
The process of nickel nanoparticle nucleation and growth during galvanochemical deposition on the surface of multiwalled carbon nanotubes has been studied. The dependences of the morphology, size, and spacing of nickel nanoparticles on the deposition time at a current density of 5 and 0.5 A/dm 2 are determined.
A new and robust parameter estimation technique, named image noise cross-correlation, is proposed to predict the signal-to-noise ratio (SNR) of scanning electron microscope images. The results of SNR and variance estimation values are tested and compared with nearest neighborhood and first-order interpolation. Overall…
The anodic formation of Cu(I) and Cu(II) oxides on polycrystalline copper in a deaerated alkaline solution is studied using the technique of the synchronous recording of transients of the photocurrent and polarization current. The oxide formation in a currentless mode is analyzed via the synchronous recording of photo…
Nanoparticle wire and integrated nanoparticle wire array have been prepared through a green technique: discontinuous vertical evaporation-driven colloidal deposition. The conducting gold nanoparticle wire made by this technique shows ability for the sensitive electronic detection of chemical and biological molecules d…
Abstract The electrochemical properties of Ni(OH) 2 /CNTs prepared by electrochemical deposition were investigated in this article. The results show that deposits of Ni(OH) 2 has high purity and can optimize the electronic and ionic conductivity to minimize the total resistance of the system and maximize the performan…
Abstract An exploratory investigation on the oxidation behavior of polymer derived Si‐(B)‐C‐N ceramic in ambient air was conducted in this paper. The amorphous ceramic was oxidized at 1300 °C for 12 h, and the oxidation products were analyzed by employing XRD, FT‐IR and TEM. The experimental results indicate that the…
Abstract Arylenevinylene‐based π‐conjugated polymers containing imidazolium cationic units in the main chain and their model compounds were synthesized and characterized in terms of optical and electrochemical properties. 9,9‐Bisoctylfluorene, 2,5‐bisdodecyloxybenzene, and 3‐dodecylthiophene were introduced as arylene…
Two nanocelluloses (cellulose nanofibers [CNF] and nanowhiskers [CNW]) were extracted from softwood flour using chemical refining followed either by mechanical fibrillation or acid hydrolysis. The CNF slurry formed an opaque gel that exhibited highly coiled and entangled long fibers with widths between 10 and 20 nm wh…
A series of calcium sulfate whiskers (CSW)-filled, castor oil-based polyurethane/epoxy resin graft interpenetrating polymer network (IPN) composites were prepared. The tensile and impact strengths, fractured surfaces, damping properties, and thermal stability of the IPN composites were studied systematically in terms…
Abstract Unfilled and MWCNT‐filled PA fibers are prepared and the effect of the extensional flow on their mechanical performance and morphological variations is investigated. Morphological analyses using SEM, TEM, and SAXS suggest a stronger orientation of the MWCNTs along the fiber direction with increasing extension…
The effects of the poling field on the structural and electrical properties of 0.65Pb(Mg 1/3 Nb 2/3 )O 3 –0.35PbTiO 3 (0.65PMN–0.35PT) ceramics were investigated. The highest piezoelectric coefficient d 33 , coupling coefficients k p , k t , and mechanical quality factor Q m were achieved for ceramics poled at electri…
Early work on the iron-arsenide compounds supported the view, that a reduced dimensionality might be a necessary prerequisite for high-T c superconductivity. Later, however, it was found that the zero-temperature upper critical magnetic field, H c2(0), for the 122 iron pnictides is in fact rather isotropic. Here, we r…
Colonies that could be identified as Thalassiosira rotula, others that could be identified as Thalassiosira gravida and colonies with a mixture of the valve structures of these two species were found coexisting in the same samples from Piedras Coloradas (40°50′46″S, 65°06′18″W). Net samples were collected from surface…