Materials Literature
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Abstract Measured polarization curves were used in a BEM model of the galvanic corrosion of the Mg alloy AZ31B. The AZ31B galvanostatic anodic polarization curves indicated: (i) the existence of the uni‐positive Mg + ion, (ii) some hydrogen dissolved in the AZ31B metal, and (iii) self corrosion was more important than…
Complexation of trinuclear oxo-centered carboxylates with a silicododecatungstate resulted in the formation of ionic crystals of [M(3)O(OOCC(6)H(5))(6)(H(2)O)(3)](4)[α-SiW(12)O(40)]·nH(2)O·mCH(3)COCH(3) [M = Cr (Ia), Fe (IIa)]. Treatments of Ia and IIa at 373 K in vacuo formed guest-free phases Ib and IIb, respectivel…
In this mini-review we report on current developments of hybrid materials based on semiconductor nanocrystals integrated into polymer matrices for direct light conversion, their present limitations, as well as their high potential for future applications.
There are several methods of producing open porous polymer structures for medical use. However, very few are applicable to industries and are therefore limited to both number of samples and batch variations. This study presents an industrial microcellular injection molding process, known as MuCell® technology, which w…
Abstract A‐site‐ordered perovskite‐structure oxides AA′ 3 B 4 O 12 with Cu 2+ ions at the A′ site are highlighted. Some new compounds were synthesized under high‐pressure and high‐temperature conditions. With nonmagnetic ions at the B site, only the Cu 2+ spins at the A′ site contribute to the magnetic properties, pro…
This article deals with basic characteristics and problems in the area of technology of Rapid Prototyping using layered manufacturing technology. It belongs to progressive methods of model creation based on geometry obtained from CAD environment with application possibilities in different industrial spheres. Chapters…
Novel synthesis of heterocyclic liquid crystal compounds containing seven-membered 1,3-oxazepine-4,7-diones, 5,6-dihydro-1,3-oxazepane-4,7-diones, and 5,6-benzo[e] [Citation1, Citation3]oxazepine-4,7-diones rings at para position has been carried out from the reaction of maleic, succinic, and phthalic anhydrides with…
We use computer simulations to investigate the stability of a two-component polymer brush de-mixing on a curved template into phases of different morphological properties. It has been previously shown via molecular dynamics simulations that immiscible chains having different length and anchored to a cylindrical templa…
Aerosil silica nanoparticles dispersed in a liquid crystal (LC) possess the interesting property of keeping memory of an electric- or magnetic-field-induced orientation. Two types of memory have been identified: thermally erasable memory arising from the pinning of defect lines versus a "permanent" memory where the or…
The exchange of water molecules between the inner sphere of a paramagnetic chemical exchange saturation transfer (PARACEST) contrast agent and bulk water can shorten the bulk water T(2) through the T(2) -exchange (T(2ex) ) mechanism. The line-broadening T(2ex) effect is proportional to the agent concentration, the che…
A novel series of linear hydrogen-bonded (HB) liquid crystalline (LC) complexes (HBLCs), namely Py16BA:noBAs, is reported. The series was prepared by the complexation of a novel non-mesogenic proton acceptor moiety, namely (4-pyridyl)-benzylidene-4′-n-hexadecyl aniline (Py16BA), with a mesogenic proton donor, p-n-alko…
Luminescent europium-doped Y 2 O 3 precursors are evaluated as potential ex situ thermal sensors for rapid heating events. The material is heated via pyroprobe for periods between 1 and 100 s. The morphological and optical properties of the material are measured as a function of heated temperature and dwell time. Upon…
The nucleation and growth of Fe on graphene is highly unusual. A constantly increasing island density indicates the presence of strong, predominantly repulsive, adatom interactions. We study these interactions by first-principles calculations to identify their origin. We find that the interactions consist of a short-r…
We have investigated the formation of a nickel oxide monolayer on Rh(111) by scanning tunneling microscopy (STM), high-resolution electron energy loss spectroscopy (HREELS), and density functional theory (DFT) calculations. This monolayer displays a corrugated (6 × 1) superstructure, with a formal Ni 5 O 5 stoichiomet…
Electrolytes with high ionic conductivity at lower temperatures are the prerequisite for the success of Solid Oxide Fuel Cells (SOFC). One promising candidate is doped zirconia. In the past its ionic conductivity has mainly been increased by decreasing its thickness. However, the influence of the thickness is only lin…
We describe a nonlinear interaction between charge currents and spin currents which arises from the energy dependence of the conductivity. This allows nonmagnetic contacts to be used for measuring and controlling spin signals. We choose graphene as a model system to study these effects and predict its magnitudes in no…
Abstract TPVs are prepared by dynamic vulcanization in which crosslinking of an elastomeric polymer takes place during its melt mixing with a thermoplastic polymer under high‐shear conditions. 30:70 wt% blends of PP and ethylene–octene copolymer are vulcanized using electron‐induced reactive processing (EIReP) employi…
Ribonucleic acid (RNA) is proposed as a nonionic surfactant for the efficient exfoliation of graphite in thin flakes of few-layer graphene and the subsequent preparation of transparent and conducting thin films. Parameters such as the type of RNA used and the size of starting graphite flakes are demonstrated to be ess…
Three binary systems, each consisting of two nonmesogenic compounds, viz. p-tolual-p-phenetidine (M.P. 108.5°C) [A] as the common component, and Methyl p-(p′-n-butyloxy benzoyloxy) benzoate (M.P. 119.0°C) [B1], Ethyl-p-(p′-n-butyloxy benzoyloxy) benzoate (M.P. 94.0°C) [B2], and n-Butyl p-(p′-n-butyloxy benzoyloxy) ben…
Abstract Silicon is the cornerstone of the semiconductor industry. In the nanoscale, the surface gains considerable significance due to the large surface to volume ratio. Recent theoretical advances in the investigation of the excited state properties of silicon quantum dots (QDs) are reviewed in this article. The ori…