Materials Literature
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We demonstrate that 100% light absorption can take place in a single patterned sheet of doped graphene. General analysis shows that a planar array of small particles with losses exhibits full absorption under critical-coupling conditions provided the cross section of each individual particle is comparable to the area…
We use semiconductor Bloch equations to describe excitonic absorption spectra of metallic carbon nanotubes. In particular, we focus on the formation of exciton-phonon induced sidebands. Our approach is based on the density matrix formalism combining zone-folded tight-binding wave functions and electron-phonon coupling…
Six organophosphine/phosphite‐stabilized silver(I) N ‐hydroxysuccinimide complexes of type [C 4 H 4 NO 3 Ag⋅L n ] (L = PPh 3 ; n = 1, 2a; n = 2, 2b; L = P(OEt) 3 ; n = 1, 2c; n = 2, 2 d; L = P(OMe) 3 ; n = 1, 2e; n = 2, 2f) were prepared. These complexes were obtained in high yields and characterized by elemental anal…
Abstract A method to fabricate micropatterns of non‐circular droplets of a self‐assembled block copolymer by solvent‐assisted wetting on chemically periodic surface is presented. The block copolymer is dewetted on a topographic pre‐pattern to form an array of microdroplets with a sphere‐capped shape and circular conta…
Electromigration of ions through porous silica particles dispersed in an electrolyte is studied by conductivity measurements. By determining the suspension conductivity at infinite dilution of particles where the Maxwell equation is applicable, the conductivity of the particles is determined. At high ionic strength, t…
An effect of rolling temperature on the mechanical properties and microstructural evolution of an Al-Mg-Si alloy was studied. The material was rolled up to a true strain of ~0.7 at three different temperatures viz; room temperature, liquid propanol and liquid nitrogen. The liquid nitrogen rolled sample exhibited super…
Monoclinic gallium oxide, β-Ga<sub>2</sub>O<sub>3</sub>, is a transparent conducting oxide (TCO) that presents one of the widest band gaps among this family of materials. Its characteristics make it highly interesting for applications in UV - visible - IR optoelectronic and photonic devices. On the other hand, th…
A water suspension of graphene oxide nanosheets (GONSs) obtained via exfoliation of a graphite oxide was treated with a solution of rhodamine 6G. It was found that adding the dye results in the destruction of the GONS water suspension and the precipitation of dyed graphene oxide. The precipitate, washed out of the exc…
We obtain room-temperature resistivities as low as ρ =1.4 x 10<sup>-4</sup> Ω-cm in transparent Ga-doped ZnO grown on Al<sub>2</sub>O<sub>3</sub> by pulsed laser deposition (PLD) at 200 °C in 10 mTorr of pure Ar and then annealed in a Zn enfivironment. Donor N<sub>D</sub> and acceptor N<sub>A</sub> concentra…
P-type thin-film transistors (TFTs) using room temperature sputtered tin and copper oxide as a transparent oxide semiconductor have been produced on rigid and paper substrates. The SnO<sub>x</sub> films shows p-type conduction presenting a polycrystalline structure composed with a mixture of tetragonal β-Sn and &…
A novel poly(butyl succinate) (PBS) and polylactic acid (PLA) blend with the favorable mechanical and degradable properties may be applied in the field of biomedicine. The purpose of this study was to investigate the in vitro and in vivo biocompatibilities of the PBS/PLA blend for future application. For in vitro anal…
It is well known that enhancing interfacial adhesion between inorganic filler and matrix resin in a composite lead to favorable properties such as excellent mechanical properties, high thermal resistance, prominent electric insulation, low expansion coefficient, and so on. But it should be avoided that much excess of…
Collagen is the most abundant protein in mammals and is a basic component of the extracellular matrix. Due to its unique properties it is widely used as biomaterial, scaffold and culture substrate for cell and tissue regeneration studies. As the majority of the biological reactions occur on surfaces or interfaces and…
Unabhängig: Im Basischen zeigte ein Furanring, der in einem aromatischen Makrozyklus eingeschlossen war, die Eigenschaften eines freien Moleküls und nahm ein Wassermolekül auf, wodurch das Achmatowicz-Umlagerungsprodukt mit einer 3-Pyranon-Einheit entstand. Palladium(II)-Koordination ergab einen Komplex, der ein zweit…
First-principles fully relaxed tensile and shear test simulations were performed on Σ10(1124)/[1100] tilt Mg grain boundary (GB) models, with and without H segregation, to investigate mechanisms of H embrittlement of Mg. Strengthening as a result of covalent-like characteristics of Mg-H bonds prevailed over weakening…
The Dzyaloshinskii-Moriya (DM) interaction in metals is an important mechanism for many magnetic properties. We start with the s-d exchange model and spin-orbit interaction for weak itinerant ferromagnetic systems to establish the form of DM interaction for metallic magnetic systems. The s-d exchange interaction is tr…
π-Conjugated trinuclear iridium and cobalt dithiolenes undergo multiple metal-metal bond formation with Co(2)(CO)(8) and Fe(CO)(5), giving rise to Ir(3)Co(6) nonanuclear and Co(3)Fe(3) hexanuclear cluster complexes 5 and 6, respectively. 5 retains a planar framework and intense π conjugation across the three iridadith…
The preparation and crystal structure of a large wheel-shaped indium-telluride compound are reported. The inorganic cluster is decorated with 1,2-diaminocyclohexane molecules that play an important role in the formation of the nanoring. A related new 1D polymeric InTe compound is also presented in order to understand…
Radial deformations of carbon and boron-nitride nanotubes are of great importance to their respective electronic properties and applications. In this paper, we present a simple and practical approach of engineering radial deformations in single-walled carbon and boron-nitride nanotubes (SWCNTs and SW-BNNTs) through co…
ABSTRACT Sliding contact experiments and first principles calculations were conducted to study tribological properties of aluminium and fluorinated diamond‐like carbon (F‐DLC) surfaces. Sliding tests between Al and an F‐DLC coating generated a low coefficient of friction (COF) of 0.09–0.14 and led to the formation of…