Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The viscoelastic properties of nanocomposites based on epoxy and epoxy-phenolic blend matrix reinforced with multi-wall carbon nanotubes were studied. The content of carbon nanotube (0.2 and 0.5 wt.%) and its surface state (pristine vs. oxidized) varied. The characterization of the nanocomposites was done by means of…
In this paper, we report the optical and thermal properties of a new Nd-doped phosphate laser glass. Glass samples with 0.5-3.7 wt% Nd-doping concentrations were prepared, annealed, cut and polished for different measurements, including glass density and refractive index, absorption spectra and emission cross section,…
Abstract Polyaniline (PANI)/Ag nanocomposites were successfully synthesized via in situ chemical oxidative and enzymatic polymerization of aniline based on 2‐aminothiophenol (2‐ATP)‐capped Ag nanoparticles. The approach to the fabrication included three steps: (i) the preparation of silver nanoparticles; (ii) the form…
We determine the role that a two-dimensional electron gas, formed at a ZnMgO/ZnO heterojunction, plays in shaping the corresponding temperature dependence of the low-field electron Hall mobility. This analysis is cast within the framework of the model of Shur et al. [M. Shur et al., J. Electron. Mater. 25, 777 (1996)]…
Polymethyl methacrylate (PMMA) nanofiber-reinforced diglycidyl ether of bisphenol A shape memory epoxy composites were fabricated and their shape-memory properties were investigated. The PMMA nanofibers were found to be randomly distributed, while the tensile strength and Young’s modulus increased with increase in the…
The advance of lithographic resolution has made it necessary to adopt extremely thin photoresist films for the fabrication of “2× nm” structures in order to mitigate problems such as resist collapse during development but limiting achievable etch depths at the same time. By using multilayer hardmask stacks, a consider…
In this study, silk sericin films were prepared using different extraction methods, and the molecular conformation of sericin was examined using Fourier-transform infrared spectroscopy with attenuated total reflection geometry. Additionally, the effect of the film side (air-facing side or plate-facing side) on the mol…
Titanium dioxide (TiO2) nanoparticles have a high surface-to-mass ratio and rapidly aggregate in water causing great difficulties for toxicity test exposed to aquatic organisms or other cell lines. This study uses a cell viability kit for routine toxicity test of TiO2 as well as other nanoparticles which accumulate in…
Au was deposited on ultrastable Y (USY) zeolites using an ion-exchange method. Up to 5.5 wt% Au was introduced into the NH4-form of USY zeolites. In contrast, deposition of Au hardly took place on the H- and Na-forms of Y-type zeolites, NH4-forms of mordenite, and ZSM-5. Treatment of the Au-loaded USY zeolite in a H2…
The phase behavior of block copolymer based supramolecular complexes polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) and amphiphilic pentadecylphenol (PDP) molecules resembles the phase behavior of conventional block copolymers. Several PS-b-P4VP(PDP) complexes are found to self-assemble into gyroid nanostructures…
The effects of iron substitution on the structural and magnetic properties of the GdCo(12-x)Fe(x)B6 (0 ≤ x ≤ 3) series of compounds have been studied. All of the compounds form in the rhombohedral SrNi12B6-type structure and exhibit ferrimagnetic behaviour below room temperature: T(C) decreases from 158 K for x = 0 to…
Equal channel angular pressing is one of the attractive methods of severe plastic deformation techniques to fabricate ultrafine grained materials. In this study, eight different equal channel angular pressing configurations including the punch shape, sample preform and die geometry have been analyzed using finite elem…
In this study, fluorescent proteins (FPs) were engineered to self-assemble into protein particles inside recombinant Escherichia coli while mediating the display of various protein functionalities such as maltose binding protein or IgG binding domains of Protein A or G, respectively. Escherichia coli produced function…
Biomimetic micro‐structures are fabricated with a two‐stage pattern transfer process on conventional epoxy coatings. The pattern transfer process uses a soft‐polymer negative stamp, where the flexibility of the stamp allows for easy conformation to both flat and curved surfaces. The hydrophobicity and friction behavio…
The present investigation has been conducted to evaluate the hepatoprotective effect of Curcuma longa against lead induced toxicity.
Corrosion inhibition mechanism of aluminium in H2SO4 by polyacrylic acid (PAA) in the absence and presence of iodide ions was investigated using in-situ atomic force microscopy (AFM). Results indicate that PAA inhibited the corrosion of aluminium by adsorption onto the aluminium surface. Inhibition efficiency of PAA w…
Polycrystalline WS 2 films were grown by pulsed laser deposition (PLD) system at relatively low temperature. The main objective of this study is to optimize the growth conditions for polycrystalline WS 2 films at relatively low temperature to use them for photovoltaics (PVs). Different growth conditions and substrates…
The effect of partial substitution of Ge in the Si sites of SrSi 2 alloy has been investigated by means of electrical and thermal transport studies. Electrical resistivity ( ρ ), Seebeck coefficient ( S ) and thermal conductivity ( κ ) measurements were performed on the SrSi 2− x Ge x alloys with x = 0–0.12. The room-…
We have developed a high-yielding synthesis of meso-tetraalkylporphyrins, which previously have been obtained only in lower yields. By employing Montmorrilonite K10 as the acid catalyst and 3 Å molecular sieves as the dehydrating agent, yields that reached 70 % could be achieved with some aliphatic aldehydes. The free…
The bifunctional catalytic activity of 30% 12-tungstophosphoric acid impregnated to MCM-41 (TPA 3 /MCM-41) and zirconia (TPA 3 /ZrO 2 ) was explored for acid catalysis as well as oxidation reactions. The effect of various reaction parameters such as molar ratio, amount of catalyst, time, and temperature was studied to…