Materials Literature
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We study the Kondo screening of a magnetic impurity adsorbed in graphene in the presence of Rashba spin-orbit interaction. The system is described by an effective single-channel Anderson impurity model, which we analyze using the numerical renormalization group. The nontrivial energy dependence of the host density of…
We have performed density functional theory-based first-principles calculations to study the stability, geometrical structures, and electronic/magnetic properties of pure graphene, sodium (Na)-adsorbed graphene and also the adsorption properties of H $$_2$$ -molecular ranging from one to five molecules on their prefer…
Composite materials have increasingly been used in construction and in the aerospace and automotive industries because they are lightweight, strong and corrosion resistant, and because their anisotropic properties can be controlled; maintenance costs are also low. However, there is a growing demand for improved compos…
We report an enhancement in light emission and electrical efficiencies of a Si nanocrystal (NC) light-emitting diode (LED) by employing indium tin oxide (ITO) nanowires (NWs). The formed ITO NWs (diameter < 50 nm) are compactly knitted and have a tendency to grow perpendicularly above the surface. The electrica…
Polyethylene (PE) pipe material may degrade into lower carbon number volatiles quickly during thermal welding when the welding temperature rises up to very high temperature. However, PE may also degrade into lower molecular weight (MW) polymer when subjected to a lower temperature. As a result, determination of the al…
The percolation threshold for polydisperse systems of (i) isotropically oriented, and (ii) perfectly aligned, circular disks is calculated within an analogy to a lattice model. Our results are expressed in terms of moments of the distribution function over the disk radii, and they closely resemble findings obtained fr…
Stepwise reaction of LH 3 (LH 3 = N[CH 2 CH 2 N═CH-C 6 H 3 -2-OH-3-OMe] 3 ) with Ln(NO 3 ) 3 · n H 2 O and potassium oxalate [K 2 Ox] afforded discrete heterometallic neutral octanuclear complexes [Ln 4 K 4 (L) 4 (μ-H 2 O) 4 (NO 3 ) 2 (μ-Ox)] (Ln = Dy(III), Gd(III), Tb(III), Ho(III); LH 3 = N[CH 2 CH 2 N═CH-C 6 H 3 -2…
The magnetic and microwave properties of a heterostructure composing of a composition-graded FeCoTa film and a [Pb(Mg1/3Nb2/3)O3]0.68-[PbTiO3]0.32(011) substrate were investigated with respect to a varied applied electric field. For the as-deposited sample in the initial unpoled state, the resonance frequency is 7.2 G…
Large, thin (50 μm) dry polymer sheets containing numerous surface-enhanced Raman spectroscopy (SERS) active Ag nanoparticle aggregates have been prepared by drying aqueous mixtures of hydroxyethylcelloulose (HEC) and preaggregated Ag colloid in 10 × 10 cm molds. In these dry films, the particle aggregates are protect…
Proline utilization A from Bradyrhizobium japonicum (BjPutA) is a bifunctional flavoenzyme that catalyzes the oxidation of proline to glutamate using fused proline dehydrogenase (PRODH) and Δ(1)-pyrroline-5-carboxylate dehydrogenase (P5CDH) domains. Recent crystal structures and kinetic data suggest an intramolecular…
Based on the recent concept of the photonic hyper-crystal—an artificial optical medium that combines the properties of hyperbolic materials and photonic crystals, we present the imaging system functioning as a Veselago lens. This planar lens shows a nearly constant negative refractive index with substantially reduced…
The Ag nanoparticles (NPs) surrounding triangular nanoarrays (TNAs) with high number density of surface-enhanced Raman scattering (SERS) hot spots (SERS hot spots ring) are prepared by a combination of NPs deposition and subsequent colloid lithography processing. Owing to the SERS hot spots ring, the Ag NPs surroundin…
Quantum thermal transport in armchair and zigzag graphene nanoribbons is investigated in the presence of single atomic vacancies and subject to different boundary conditions. We start with a full comparison of the phonon polarizations and energy dispersions as given by a fifth-nearest-neighbor force-constant model (5N…
Abstract The reactions of lanthanide(III) nitrate salts (Dy III , Tb III , Gd III , and Er III ) with the aroylhydrazone‐based multidentate ligand 6‐(hydroxymethyl)‐ N′ ‐[1‐(pyridin‐2‐yl)ethylidene]picolinohydrazide (LH 2 ) in the presence of Et 3 N in a molar ratio of 1:1:4 afforded a series of homometallic tetranucl…
Through coarse-grained molecular dynamics simulation, we aim to uncover the rupture mechanism of polymer-nanorod nanocomposites by characterizing the structural and dynamic changes during the tension process. We find that the strain at failure is corresponding to the coalescence of a single void into larger voids, nam…
Silica formation in a rubber matrix is studied. The hypothesis that the formation proceeds via inverse micelles where the hexylamine present, being a catalyst, also behaves as a surfactant, is made highly plausible. As well-known, the conversion of TEOS into a solid silica particles proceeds via hydrolysis and condens…
In many cases, the relativistic spin-orbit (SO) interaction can be regarded as a small perturbation to the electronic structure of solids and treated using regular perturbation theory. The major obstacle on this route comes from the fact that the SO interaction can also polarize the electron system and produce some ad…
Stimulus-sensitive systems at the nanoscale represent ideal candidates for improving therapeutic and diagnostic approaches by producing rapid responses to the presence of specific molecules or conditions either by changing properties or by acting "on demand". Here we introduce an optimized light-sensitive nanoreactor…
Electrophoretic deposition (EPD) is used to deposit multiwalled carbon nanotube networks (CNTs) onto electrically insulating glass fiber surfaces. We found that the thin networks on a single glass fiber surface exhibit semiconducting properties. This enables us to realize a single CNT-glass fiber as a probe with novel…
The plastic deformation behaviour of the Al–Si–Cu–Mg alloy with micro-additions of Zr–V–Ti was measured in the temperature range of 298–673 K and the true stress–true strain compression curves were used to calculate the dislocation slip distance (DSD). A new constitutive equation for the temperature dependent DSD was…