Materials Literature
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Surface-enhanced Raman scattering (SERS) has grown dramatically as an analytical tool for the sensitive and selective detection of molecules adsorbed on nano-roughened noble metal structures. Quantification with SERS based on signal intensity remains challenging due to the complicated fabrication process to obtain wel…
The non-linear properties provided from ZnO + A CoO 3 ceramics ( A =Ca,Sr and Ba) and their application to MLCV for ESD-suppression were studied. Their ceramics showed excellent non-linear I- V properties in lower voltage region. Especially, ZnO + SrCoO 3 ceramics intrinsically had about 20 % lower Vgb than those of P…
A series of colorless and transparent polyimide (PI) nanocomposite films was synthesized from 4,4'-(hexafluoroisopropylidene) diphthalic anhydride (6FDA) and bis(3-aminophenyl) sulfone (APS) with various organoclay contents via solution intercalation polymerization to poly(amic acid)s, followed by thermal imidization.…
This study elucidates the effects of adding Mn, the Ti/Cr ratio, and high-temperature annealing on the hydrogen absorption–desorption properties of Ti–V–Cr–Mn body-centered cubic alloys. The hydrogen storage properties of alloys are also modified by integrating the positive effects. X-ray diffraction analysis indicate…
Reaction between H 2 TFcP (TFcP 2- is a dianion of 5,10,15,20-tetraferrocenylporphyrin) with tin(II) chloride results in formation of the trans- Cl 2 SnTFcP complex, which was characterized by UV-vis, MCD, 1 H and 13 C NMR, and APCI MS methods. X-ray single crystal analysis was used to determine the structure of the t…
A multilayer back propagation learning algorithm was used as an artificial neural network tool to predict the mechanical properties of porous NiTi shape memory alloys fabricated by press/sintering of the mixed powders. Effects of green porosity, sintering time and the ratio of the average Ti to Ni particle sizes on pr…
In this study, we report some improvements in a hydrothermal method for lead-free piezoelectric powders and the performance of the sintered (K 0.48 Na 0.52 )NbO 3 ceramics. To increase the obtained powder weight per source solution volume, the hydrothermal reaction conditions were modified. This improvement is importa…
Dilatometry, magnetometry, and optical metallography were used to study structural and magnetic transformations in Ni-Mn-In alloys of different compositions. Temperatures of structural and magnetic transformations of the Ni47 − x Mn42 + x In11 alloys (with x = 0–2) were determined. It is shown that, as the valence ele…
This study was conducted for the development of the green protection garments. For this purpose, laminate composite material was developed from Kevlar 29-ramie-unsaturated polyester resin. The aim of this study was to develop a solid body armour that meets the specific requirements of ballistic resistance. This compos…
Abstract In this article, poly(vinyl chloride) (PVC)/acrylonitrile butadiene rubber (NBR)/clay nanocomposites were melt-mixed using the computerized Brabender plasticorder. During preparation of the nanocomposites self-crosslinking (crosslinking without aid of any crosslinking agent) occurs and affects all properties…
In this paper we report on the realization of magnetic field-induced martensitic phase transformation in Mn-rich Heusler alloy Mn2Ni1.36Sn0.32Co0.32. The saturation magnetization of the austenite reached 111 emu/g at 70 kOe, which decreased rapidly to 8 emu/g upon transforming to martensite. This is attributed to the…
Abstract Extrusion is one of the most applied technologies for the processing of polymer nanocomposites for applications in automotive, electrical and packaging industrial sectors. These nanostructured materials have advantages in comparison to traditional polymer materials, so that properties like tensile strength an…
To overcome the disadvantage of MgO-CaO refractories, as the poor hydration resistance, MgO coating on the MgO-CaO clinker was fabricated by carbothermal reduction MgO with carbon as reduction agent and then the oxidation of Mg vapor. Effect of processing parameters (such as carbon source, reaction temperature and hol…
Abstract Variable‐temperature FT‐IR spectra of poly(3‐hydroxybutyrate) (PHB), poly(ε‐caprolactone) (PCL) and a PHB/PCL (50:50 wt.%) blend were analyzed by two‐dimensional correlation spectroscopy (2DCOS). For this purpose the ν(CO) region was employed to characterize in some detail the crystallization behavior of the…
CdSe/ZnS core–shell quantum dots (QDs) have been immobilized by ultraviolet matrix-assisted pulsed laser evaporation (UV-MAPLE) onto SiO 2 glass substrates covered by silica thin films. The silica thin films were deposited by the sol–gel method. An UV KrF* (λ = 248 nm, τ fwhm ≅ 25 ns) excimer laser source was used for…
Epitaxial CoFe2O4 (CFO) films with different thicknesses (6–240 nm) were fabricated on (001) SrTiO3 substrates by reactive cosputtering. Microstructure analyses indicate that the surfaces of the CFO films are covered by islands with height from 2.7 to 0.8 nm upon decreasing film thickness from 240 to 6 nm. Magnetic me…
A new electrostatic focusing Spindt-type field emitter array (FEA) was simulated and fabricated to develop a compact FEA image sensor with a high-gain avalanche rushing amorphous photoconductor target. Although the conventional double-gated FEAs can generate focused electron beams by applying a lower voltage to the fo…
Elastomeric polyurethane (PU) was mixed with 1, 3, 5, 7, and 10 wt% of Cloisite 20A to obtain PU-based nanocomposites. The thermal stabilities of the obtained products were characterized by thermal analysis using a thermogravimetric analyzer (TGA), which showed that addition of 5 wt% of organoclay to the PU increased…
The constants of the central and noncentral interactions between carbon atoms in 2D supracrystals, i.e., generalized two-dimensional crystals in which the sites of the lattice contain, instead of individual atoms, their symmetric complexes, have been calculated. It has been shown that these constants essentially depen…
Beryllium oxide (BeO) nanopowder was synthesized using sol-gel method and the effects of changes of chemical reagents were investigated. Because of tissue equivalence and other outstanding thermoluminescence (TL) properties of the bulk material in X and γ dosimetry, the applicability of this nanostructure in TL dosime…