Materials Literature
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This paper considers phonon transport behavior in graphene nanoribbons (GNRs) that bridge semi-infinite graphene contacts. The work employs an atomistic Green’s function (AGF) method to investigate phonon wave effects in GNRs with both zigzag and armchair edges. Thermal conductances are found to be sensitive to the ed…
Abstract This paper reports on the role of repeated stress-induced martensite transformations at different temperatures (referred to as “training”) on the pseudoelasticity and microstructural evolution of as-grown Co 49 Ni 21 Ga 30 [001]-oriented shape memory alloy single crystals under compression. The training resul…
The low-angle bent-shaped molecules with 1,7-naphthalene central core and alkylthio tails can form a novel hexagonal columnar phase and a dark B4 phase. The columnar phase has a large two-dimensional hexagonal lattice with edges of 65–75 Å and exhibits polar switching with spontaneous polarization along the column axi…
Here we report the synthesis of gold nanoparticles using ethanolic extract of Mentha arvensis leaves, an edible plant used as a condiment and traditional medicine in India. UV-Vis spectroscopy analysis confirmed the formation of gold nanoparticle. Transmission electron microscope (TEM) images showed that the gold nano…
Duplex stainless steels (DSS, including super duplex stainless steels {SDSS}) have proven to be very useful engineering materials, albeit with somewhat different welding requirements than those of the more familiar austenitic stainless steels. Despite a generally good track record in welding of duplex stainless steels…
The plastic deformation of AZ31 magnesium alloy under tension at temperatures of 4.2–295K is studied as a function of its microstructure following squeeze casting (SC) and after severe plastic deformation (SPD) by hot rolling and equal-channel angular pressing. SPD reduces the average grain size and creates a texture…
In the present paper a detailed analysis of high-resolution luminescence spectra of Eu(III)-H(2)O species in frozen aqueous solution (T = 5 K) is presented. From the total luminescence spectra (TLS, excitation vs emission) and the luminescence decay matrixes (time vs emission), fundamental species-selective spectrosco…
Abstract Radical species, including atomic hydrogen, play an important role in the CVD process to prepare high‐quality thin solid films. Detailed information on the absolute densities of these radicals under various conditions is needed in order to understand the chemical kinetics involved and to control the depositio…
DSC and NMR are employed to determine the glass-transition temperatures and the structural features of polybutadienes with widely varying configuration isomeric compositions. The dependences of the glass-transition temperature on the contents of cis-1,4-, trans-1,4, and 1,2-units in polybutadiene chains are plotted an…
The development of new fibrous composites with specific properties has attracted a big interest in the development of new tech- nologies. One of the biggest problems in this area is the improvement of the fiber/matrix interface to increase the mechanical properties in the final composite. In this work, surface chemica…
Abstract This report highlights the results of the preparation of semiconductor CdTe quantum dots (QDs) in the aqueous phase. The small size of a few nm and a very high luminescence quantum yield exceeding 60% of these materials make them promisingly applicable to bio-medicine labeling. Their strong, two-photon excita…
In this paper, the authors present experimental studies on transport characteristics of graphene FETs with channel lengths down to 70 nm. The factors limiting the performance of short channel graphene devices are discussed. RF performance of a sub-100 nm graphene transistor fabricated on epitaxial graphene grown on a…
Poly(γ-benzyl-L-glutamate) (PBLG) derivatives are synthetic polypeptides for preparing nanoparticles with well controlled surface properties. The aim of this paper was to investigate the biodistribution of pegylated PBLG in rats. For this purpose, nanoparticles were prepared by a nanoprecipitation method using mixture…
Abstract In this study, to understand how cellulosic materials characteristics influence the mechanical properties of polyvinyl chloride (PVC) composites, we first studied the effect of different types (wood flour and pulp fiber) and contents on selected mechanical properties of uncompatibilized wood plastic composite…
Interactions of peptides and proteins with inorganic surfaces are important to both natural and artificial systems; however, a detailed understanding of such interactions is lacking. In this study, we applied new approaches to quantitatively measure the binding of amino acids and proteins to gold surfaces. Real-time s…
This scientific review is devoted to the mechanism of the anode heating in aqueous electrolytes and its application for the heat and thermochemical treatment of steels and titanium alloys. The heating and electrochemical peculiarities of the anode hardening are considered, the technological possibilities for improving…
A novel metamaterial with negative refractive index was designed using a spatially periodic composite of microplasmas and microresonators. Microresonators, which are double-helix metal wires in this report, work as an origin of macroscopic negative permeability material, as well as discharge electrodes. If a resonance…
Tb3+ and Ag co-doped glass nano-composites were synthesized in a glass matrix Li2O-LaF3-Al2O3-SiO2 (LLAS) by a melt-quench technique. The growth of Ag nanoparticles (NPs) was controlled by a thermal annealing process. A broad absorption band peaking at about 420 nm was observed due to surface plasmon resonance (SPR) o…
Abstract We report on a systematic study of CVD‐based synthesis strategies for the nanocasting of zeolite‐templated porous carbon materials using commercially available zeolite Y as a hard template. Our findings clarify how the properties of the zeolite‐templated carbons and their hydrogen storage capacity are affecte…
It is widely believed that a liquid state can be characterized by a single order parameter, density, and that a transition from a liquid to solid can be described by density ordering (translational ordering). For example, this type of theory has had great success in describing the phase behaviour of hard spheres. Howe…