Materials Literature
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In the present work we study thin films of copper oxide that were deposited by oxidation of copper thin films on silicon substrates in temperatures varying from 150 °C up to 450 °C. Copper films were deposited by vacuum evaporation and their thickness was estimated from the evaporated mass. X-rays diffraction (XRD) pa…
It has recently been demonstrated [ I. Sieber , B. Kannan , and P. Schmuki , Electrochem. Solid-State Lett. , 8 , J10 (2005) ] that Ta can be porosified by anodic oxidation in diluted HF electrolytes. Pore morphology strongly depends on the HF concentration in the electrolyte and anodization time. In the present artic…
The first Eu3+ chelate-based phosphorescence probe specific for singlet oxygen has been designed, synthesized and characterized. The probe is highly sensitive, selective and water soluble for time-resolved luminescence detection of singlet oxygen with a detection limit of 2.8 nM.
Effects of σ phase on the initiation and propagation of pitting corrosion of duplex stainless steel were examined using critical pitting temperature (CPT) and electrochemical noise measurements in a ferric chloride solution, and the results were discussed with microstructural variations with aging time. Power spectral…
Extended and oriented nanostructures are desirable for many applications, but direct fabrication of complex nanostructures with well-aligned morphology, orientation, and surface architectures remains a significant challenge. Here, we report successful robust fabrication of zirconium oxide ( ZrO 2 ) nanotubes by a one-…
An approach in tissue engineering of heart valves is the use of decellularized xenogeneic matrices to avoid immune response after implantation. The decellularization process must preserve the structural components of the extracellular matrix to provide a biomechanically stable scaffold. However, it is known that in va…
The effect of a high magnetic field on the orientation of mesochannels in continuous mesoporous silica films is demonstrated; the orientation of mesochannels in the film can be induced parallel to the magnetic field, though the effect is not complete.
A new self-assembled and highly oriented one-dimensional single-crystal nanostructure of WO3 with hexagonal form was successfully prepared by a mild, solution-based colloidal approach.
Ultra-long and uniform copper nanowires with controllable diameters of 30–100 nm, length up to several millimeters (aspect ratio >105) and tunable crystallinity were obtained by hydrothermal processing the complex emulsion of copper (II) chloride and ODA at 120–180 °C. Both XRD pattern and EDX spectrum indicated that…
Near infrared luminescence is observed in tetrametallic [Zn2Yb2L2(mu-OH)2Cl4].2MeCN which is obtained from the Zn3 Schiff-base complex [Zn3L2(NO3)2].MeOH, (H2L =N,N'-bis(5-bromo-3-methoxysalicylidene)propylene-1,3-diamine).
Novel, porous, functionalised silica particles have been developed with controlled morphology, which promote covalent attachment of fluorescent dyes which can act as an optical barcode.
We report on a novel luminescent phenomenon in one-component cadmium metasilicate phosphors doped with various rare earth ions. After irradiation by a 254 nm ultraviolet lamp, these phosphors emit bright long-lasting phosphorescence (LLP), and their phosphorescence can be seen with the naked eye (0.32 × 10−3 cd m−2) i…
Amorphous materials—magnesium oxide fluoride with hydroxy groups—of high surface area were prepared for the first time by a soft sol–gel method involving initial fluorination and subsequent hydrolysis of the fluorinated gel. Their structural properties were studied with XRD, FTIR, XPS, and 19F MAS NMR. The magnesium o…
Single-crystalline, submicron-sized Bi2Fe4O9 cubes of reproducible shape have been successfully prepared using a facile, large-scale solid-state reaction employing a molten salt technique in the presence of a nonionic surfactant. The role of surfactant as well as alterations in the molar ratio of Bi3+ to Fe3+ precurso…
Nanocrystalline undoped β Ga 2 O 3 and Dy 3 + -doped β Ga 2 O 3 were prepared through a Pechini-type sol-gel process. All the samples began to crystallize at 600°C, and the crystallinity increased with the increase of annealing temperatures until 1000°C. Field emission-scanning electron microscopy study revealed t…
Abstract Titanium alloys are often used in highly corrosive environments because they are better suited than most other materials. The excellent corrosion resistance is the result of naturally occurring surface oxide films that are stable, uniform, and adherent. This article offers explanations and insights on the mos…
Dendrimers are branched structures and represent a fast growing field covering many areas of chemistry. Various types of dendrimers differing in composition and structure are mentioned, together with their practical use spanning from catalysis, transport vehicles to synthetic vaccines. The main stress is given to pept…
Surface initiated polymer brushes containing phosphate side groups have been used to reversibly switch wettability and hydration between three different states.
Ruthenium oxide was electrochemically prepared onto a carbon nanotube (CNT) film substrate with a three-dimensional nanoporous structure in order to improve the specific capacitance and high-rate capability of ruthenium oxide, a promising electroactive material for supercapacitors. A very thin and uniform deposition o…
We investigated thermal, rheological, morphological and mechanical properties of a binary blend of poly(lactic acid) (PLA) and poly(butylene succinate adipate) (PBSA). The blends were extruded and their molded properties were examined. DSC thermograms of blends indicated that the thermal properties of PLA did not chan…