Materials Literature
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Surface modification of meta-aramid fibers was performed by phosphoric acid treatment. Surface morphology and element composition of untreated and treated fibers were analyzed by scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS). Effects of surface modification on the mechanical strength of…
Polydicyclopentadiene (PDCPD) nanocomposites reinforced with nanoscale silica were prepared by an in-situ polymerization technique in simulating reaction injection molding system. The nanoscale silica particles were treated with toluene diisocynate (TDI) and 5-norbornene-2-carboxylic acid (NCA). The analysis of IR, TG…
Until recently, construction of bilayers was an exclusive mission of nature. It requires careful choice of compounds, whose delicate interplay between head group attraction and chain repulsion engenders a truly unique balance over a narrow temperature range. We report the investigation of artificial bilayers composed…
Wo sind die Elektronen, die es einem stark reduzierten Rhenium-Bipyridyl(bpy)-Katalysator ermöglichen, CO2, aber nicht H+ anzugreifen? XAS und quantenchemische Rechnungen deuten darauf hin, dass die negative Ladung in [Re(bpy)(CO)3]− und [Re(bpy-tBu)(CO)3]− nicht in einem lokalisierten Re 5d-Zustand, sondern im Bipyri…
While a considerable and world-wide growth of the nuclear share in the global energy mix is desirable for many reasons, there are also, in particular in the "old world" major objections. These are both concerns about safety, in particular in the wake of the Fukushima nuclear accident and concerns about the long-term b…
Abstract:- In this research, Monte Carlo Simulation and degradation models were used to predict the corrosion rate and reliability of oil and gas pipelines. Discrete random numbers simulated from historic data were used to predict the corrosion rate using Brownian Random walk while the mean time for failure (MTFF) was…
A composite system of Majorana-hosted semiconductor nanowire and superconducting flux qubits, named top-flux-flux, is presented to process quantum information. We can electrically control the coupling between the Majorana-based topological qubit and the readout flux qubit, supplying a convenient method to implement a…
Recording and stimulation electrodes applied on excitable tissue are the basis of electrophysiological research, such as brain, muscles, peripheral nerves or sensory systems. Electrode-electrolyte impedance is one of the important characteristics due to its influence on the signal/noise ratio, signal distortion and bu…
In this work, nano-size HA was produced from bovine bone. At various heat treatment temperatures, poorly crystalline, partially crystalline and crystalline forms of HA were obtained. PLA composites were prepared by incorporating various forms and contents of HA into PLA matrix. The characteristics of the obtained HA p…
Spaghetti was prepared using dies made of different materials. The surface was observed using digital and optical microscopes, and was rougher for the spaghettis prepared using the Teflon, polypropylene, polycarbonate, aluminum, and bronze dies in this order. The extrusion velocity when passing through the die was fas…
Abstract The interaction of hydrogen and deuterium with the Co(0001) surface has been studied in UHV between 90 and 500 K by means of LEED, temperature-programmed thermal desorption (TPD) and work function change (ΔΦ) measurements. Hydrogen adsorbs spontaneously and dissociatively in two atomic binding states denoted…
This brief study aims at providing a model to predict the time of service of a cracked bar in corrosive environment, in view of both the fracture mechanics and elastic failure criteria. Dolinskii's assumption on the relationship between stress and the corrosion rate is adopted. It is superimposed with fracture mechani…
The present work is an attempt to provide an overview, about the status of R&D and current trends in Hydrogen Production using High Temperature Reactors. Bibliographic references from the INIS database, the Science Direct database and the NTIS database were downloaded and analyzed. Ten year data on the subject, publis…
A novel luminescent temperature sensor using ruthenium(II)-tris(2,2´-bipyridil) ([Ru(bpy)₃]²⁺) incorporated into chitosan polymer matrix was developed. The sensor exhibits completely reversible and stable luminescent response (λ exc = 455 nm, λ em = 605 nm), strong temperature sensitivity (–2.0 %/°C), significant lumi…
Poly(lactide-co-glycolide)/β-Tricalcium Phosphate (PLGA/β-TCP) composites were successfully prepared via solution dispersion method. Laser particle size analyzer (LPSA), X-ray diffraction (XRD) and SEM were used to characterize β-TCP powder. The mechanical properties of composites were carried out by the three-point-b…
In this article, titania (TiO2) nanopartcicles functionalized with hyperbranched poly(2-(2-bromopropionyloxy)ethyl acrylate) (HPBPEA) were prepared via self-condensing vinyl polymerization (SCVP) of 2-(2-bromopropionyloxy)ethyl acrylate (BPEA). The resultant sample was characterized by FT-IR and XPS. The TiO2/epoxy re…
Magnetic interlayer coupling and magnetization switching characteristics have been investigated in synthetic antiferromagnetically coupled [Pt/CoFeB]N1/Ru/[CoFeB/Pt]N2 structures with perpendicular anisotropy. We observe an oscillatory behavior of the antiferromagnetic coupling with a period of 0.7 nm and a maximum co…
Conventional light trapping techniques are inefficient at the sub-wavelength scale. This is the main limitation for the thickness reduction of thin-film solar cells below 500nm. We propose a novel architecture for broadband light absorption in ultra-thin active layers based on plasmonic nano-cavities and multi-resonan…
In this study, the authors have investigated the properties of GaPxSb1–x and InPxSb1–x for various structures and compositions using first-principles method. The authors found that GaPxSb1–x is less relaxed than InPxSb1–x compounds, with respect to their respective binary compounds, due to the larger lattice mismatch.…
We report a TiOx-based resistance-switching device that exhibits non-linearity in the low resistance state (LRS) under high operating current conditions for cross-point array applications. The transition of the conduction behavior in the LRS from linear to non-linear type was observed in the TiOx/TiOy bilayered struct…