Materials Literature
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Abstract The advantages of atom‐transfer radical polymerisation (ATRP) for synthesising well‐defined polymers have made this technique very popular in recent years for the synthesis of new polymers and copolymers with optical properties. The components involved in ATRP and their effect on composition, functionalities…
Modified nanoZnO/WPU hybrid material was synthesized by three different ways in this paper, the effect of the addition method and content of modified nanoZnO on the hybrid material were discussed. The results showed that modified nanoZnO was added in polymerization process, the hybrid emulsion stability and the coatin…
The electroluminescence (EL) and photoluminescence (PL) of five porphyrin compounds have been investigated. Each of the porphyrin derivations were doped with different concentrations in a PVK(polyvinyl carbazole):PBD(2-(4-biphenyl)-5-(4-t-butyl-phenyl)-1,3,4-oxadiazole) blend as the host. The effect of the porphyrin t…
Rebar corrosion is major decay encountered in the field of historical monuments made of reinforced concrete. In order to preserve a maximum of this cultural heritage, reliable on-site diagnosis tools are crucial. The purpose of the present study was to evaluate, on a naturally aged concrete, the impact on one hand of…
Abstract We describe the immobilization of histidine‐tagged green fluorescent protein (His6‐GFP) specifically and reversibly onto single‐walled carbon nanotubes (SWCNTs) using nickel complexed nitrilotriacetic acid‐end functionalized polystyrene (Ni‐NTA‐PS) by conjugation between the protein and the polymer in phospha…
In this paper detailed discussions are introduced for possible applications of nanotechnology and nano-materials in RF, microwave and optical applications. The proposed discussions include different nano-materials like carbon nanotube, graphene sheets, nanowires, nano-particles of noble metals like Ag and Au, and nano…
The aim of this work was to study the formulation and in vitro characterization of hydro dynamically balanced floating matrix tablets using Cefuroxime axetil (CA) as model drug. Different excipients such as hydroxy propyl methyl cellulose (HPMC) K15M, E5LV (gelling agent), sodium bicarbonate (gas generating agent) and…
We synthesized cobalt- (Co-) doped C60nanowhiskers (NWs) by applying a liquid-liquid interfacial precipitation method using a C60-saturated toluene solution and 2-propanol with Co nitrate hexahydrate (Co(NO3)3⋅6H2O). Heating the NWs at 873–1173 K produced carbon nanocapsules (CNCs) that encapsulated Co clusters with a…
A bellows expansion joint of a refinery cracked within a year of use. Analysis was carried out based on the investigation of the working conditions and environments. Through the macroscopic analysis, chemical components analysis, microstructure analysis and SEM analysis, we drew some conclusions. The high-temperature…
Within the last decade a number of x-ray diffraction methods have been presented for non-destructive 3D characterization of polycrystalline materials. 3DXRD [1] and Diffraction Contrast Tomography [2,3,4] are examples of such methods providing full spatial and crystallographic information of the individual grains. Bot…
This paper presents a novel method to fabricate separated macroporous silicon using a single step of photo-assisted electrochemical etching. The method is applied to fabricate silicon microchannel plates in 100 mm p-type silicon wafers, which can be used as electron multipliers and three-dimensional Li-ion microbatter…
Electromigration failure times of 100 nm wide dual damascene Cu interconnects have been evaluated over a very wide range of different stages of void formation and growth. Voids that did not span the whole line width and height have been monitored using the so-called local sense structures, while standard single via st…
The recrystallization behavior of 50% cold rolled Fe-22%Mn-0.376%C alloy during annealing at 560°C, 630°C and 700°C was investigated. Microhardness tests were applied for characterization of the recrystallization kinetics, X-ray diffraction and EBSD measurements were utilized to characterize the crystallographic textu…
Abstract Zinc-magnesium layers have been produced by a combination of conventional hot-dip galvanizing and PVD magnesium coating. A subsequent short heat treatment causes the diffusion of magnesium into the zinc layer. The influence of the maximum temperature of the heat treatment on the diffusion of magnesium and on…
Light emission in sound-irradiated liquids, known as Sonoluminescence (SL), is associated with the phenomenon of cavitation that affects wafer damage during megasonic processing of wafers. It has been shown that the intensity of SL can be substantially decreased through the dissolution of carbon dioxide in deionized w…
The suspension polymerization of butadiene in the presence of titanium-magnesium nanocatalysts combined with triisobutylaluminum is studied. The resulting polybutadiene is shown to contain up to 99% trans-1,4-units. The dependences of polymer microstructure on temperature and the Al-to-Ti ratio are investigated. The k…
The dislocation-disclination models describing the athermal migration of grain boundaries in stretched ultrathin nanocrystalline films have been proposed. The cases where the grain boundary emerges on a free surface of the film or is located in its central region have been considered. The changes in the total energy o…
2-D NMR techniques were used to study the structures of poly (hexafluoropropylene oxide) (PHFPO) and its mechanism of polymerization. Model compounds K4, containing four hexafluorpropylene oxide repeat units, and E4 and E2, containing four and two ether oxygens respectively, were analyzed to interpret the resonance pa…
Primary recrystallised sheets of 3% silicon steel from two different industrial processing routes have been examined after laboratory annealing to initiate secondary recrystallisation. Metallography included etching to reveal individual dislocations and sub-boundaries as well as EBSD in scanning electron microscopy. R…
We present a manipulation technique of cells and cell spheroids by utilizing cell-size collagen hydrogel microbeads. Collagen hydrogel beads were prepared by using non-equilibrium microfluidic W/O droplets containing hydrogel molecules, formed in a continuous phase of a water-soluble organic solvent. Monodisperse coll…