Materials Literature
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Alloy 22 (UNS N06022) belongs to the Ni–Cr–Mo family, and it is highly resistant to general and localised corrosion; however, it may suffer crevice corrosion in aggressive environmental conditions. The susceptibility to crevice corrosion is measured by the value of the repassivation potential. The objective of this wo…
The growth kinetics of colloidal Bi 2 S 3 nanorods was investigated. After nucleation, the length distribution of the growing Bi 2 S 3 nanorods narrows with the reaction time until a bimodal length distribution appears. From this critical reaction time on, the smallest nanorods of the ensemble dissolve, feeding with m…
The single-molecule magnet behavior found in mononuclear tetracoordinate Fe(II) complexes with trigonal monopyramidal coordination due to large magnetic anisotropy has been analyzed using theoretical methods based on CASSCF-RASSI calculations. We focus our study on the dependence of such magnetic properties on the geo…
We present LDA band structure of novel hole doped high temperature superconductors (T c ∼ 30 K) K x Fe2Se2 and Cs x Fe2Se2 and compare it with previously studied electronic structure of isostructural FeAs superconductor BaFe2As2 (Ba122). We show that stoichiometric KFe2Se2 and CsFe2Se2 have rather different Fermi surf…
Luminescent quantum dots (QDs) possess unique photophysical properties, which are advantageous in the development of new generation robust fluorescent probes based on Forster resonance energy transfer (FRET) phenomena. Bioconjugation of these QDs with biomolecules create hybrid materials having unique photophysical pr…
Abstract Owing to the unique and tunable optical, plasmonic and electrical properties of silver nanowires, they are widely used as the templates for the preparation of Au or Pt nanotubes, as substrates for surface‐enhanced Raman scattering (SERS) and detectors for some chemicals. Soft solution method is a facile and e…
The present note is an updated inventory of all known cave minerals as March 2011. After including the new minerals described since the last edition of the Cave Minerals of the World book (1997) and made the necessary corrections to incorporate all discreditations, redefinitions, or revalidation proposed by the Commis…
Bacterial cellulose (BC) synthesized from Acetobacter xylinum has drawn lots of attention and interest from biomedical device field due to its unique structure and properties. Characterized by its remarkable physical strength and extremely hydrophilic surface, BC has become a favorable material for wound healing, neur…
The thermoelectric performance of materials is dependent on the interplay or competition among three key components, the electrical conductivity, thermopower, and thermal conductivity, which can be written as integrals of a single function, the transport distribution function (TDF). Mahan and Sofo [Proc. Natl. Acad. S…
A novel type of nanoporous carbons with well-distributed uniform spherical mesopores as well as microporous carbon walls has been designed and fabricated using well-defined poly(styrene-co-acrylonitrile) grafted from SiO2 nanoparticles as the carbon source, whose hairy polymer chains simultaneously contain carbonizabl…
BACKGROUND/AIM: Both the sulfated and non-sulfated derivatives (e.g. carboxymethyl benzylamide dextrans) of heparan sulfate were reported to have anticancer activity. On this basis, we introduced sulfates and phenyls in carboxymethyl benzylamide dextrans into chitosan, which is easily modified by different functional…
The nickel-promoted Cu-containing catalysts (CuxNiy-MgAlO) for furfural (FFR) hydrogenation were prepared from the hydrotalcite-like precursors, and characterized by X-ray powder diffraction, inductively-coupled plasma atomic emission spectroscopy, N2 adsorption-desorption, UV-Vis diffuse reflectance spectra and tempe…
The long term corrosion behaviour of copper in anoxic aqueous sulphide solutions has been studied using corrosion potential and electrochemical impedance spectroscopy measurements and scanning electron microscopy on corroded surfaces and cross-sections of surfaces prepared using a focused ion beam. Experiments were co…
We report the $^{23}\mathrm{Na}$ and $^{75}\mathrm{As}$ nuclear magnetic resonance (NMR) studies on NaFeAs single crystals. The structure transition temperature ${T}_{S}$ ($55$ K) and the spin density wave (SDW) transition temperature ${T}_{\mathrm{SDW}}$ ($40.5$ K) are determined by the NMR line splits. The spin-latt…
Freely suspended nanocomposite thin films based on soft polymers and functional nanostructures have been widely investigated for their potential application as active elements in microdevices. However, most studies are focused on the preparation of nanofilms composed of polyelectrolytes and charged colloidal particles…
In recent years, rapid technological advancements have led to the development of nanoscale device components, advanced sensors, and novel biomimetic materials. Potential negative impacts of nanomaterials are sometimes overlooked during the discovery phase of research. The use of green chemistry can however enhance nan…
We designed and constructed an extensional rheometer for in situ small and wide angle x-ray study on flow-induced crystallization of polymer. Two rotating drums with an axis distance of 20 mm are employed to impose extensional deformation on the samples. With a constant angular velocity, the two drums generate a const…
Pulsed laser deposition technique was used for the fabrication of (GeTe)1−x(Sb2Te3)x (x = 0, 0.33, 0.50, 0.66, and 1) amorphous thin films. Scanning electron microscopy with energy-dispersive x-ray analysis, x-ray diffraction, optical reflectivity, and sheet resistance temperature dependences as well as variable angle…
Through a systematic theoretical analysis, we find that coarse corrugations textured on rigid surfaces are preferred to realize highly confined surface acoustic waves over a broad frequency range. To give a direct validation for the existence of the nonleaky surface waves, we have experimentally measured the dispersio…
In this study, we discussed a simple hydrothermal synthesis of self-adsorbing mesoporous silica using different templates and pore size engineering under various preparation conditions. The structural properties of the synthesized mesoporous materials were tunable by varying the reaction parameters. A hexadecyltrimeth…