Materials Literature
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This study is focused on the modification of wood fiber by using a reactive diisocyanate (toluene diisocyanate, TDI) linker to couple wood fiber with cetyl alcohol and the investigation of its effects on mechanical properties of wood fiber–HDPE composites. The reaction of TDI with wood fiber and then cetyl alcohol res…
Ferromagnetic resonance has been investigated in Ni2MnSn Heusler alloy lms. The lms were deposited at 673 < T < 723 K on MgO(001) substrates by means of magnetron sputtering. X-ray diraction conrmed that the lms were epitaxial. The lms had magnetic parameters typical of bulk Ni2MnSn with L21 structural order.
The aerated bioreactor is a promising technology for wastewater treatment. Activated carbon fiber (ACF) used as a biomembrane carrier in wastewater disposal has attracted much more concern recently. The high modulus polyacrylonitrile (PAN)-based ACF was successfully used as a biomembrane carrier for hard-to-biodegrade…
We describe the optical and structural characterization of highly luminescent thioglycolic acid–stabilized CdTe quantum dots (CdTe-QD) synthesized in water. Samples prepared under different reflux times were characterized using transmission electron microscopy (TEM), X-ray diffraction, Raman spectroscopy, absorbance a…
Abstract In this investigation, a chiral poly) ester‐imide) (PEI) via direct polyesterification of N,N ′‐(pyromellitoyl)‐bis‐( L ‐tyrosine dimethyl ester) and N ‐trimellitylimido‐ L ‐methionine was prepared using the tosyl chloride/pyridine/ N,N ′‐dimethylformamide system as a condensing agent. This approach allows th…
The rate of degradation of carbon nanotubes (CNT) comprising a field emission cathode is calculated. The sputtering of CNT material by incident ions formed through the electron impact ionization of the residual gas molecules is considered as the degradation mechanism. The degradation rate and the relevant lifetime of…
We report a novel surface enhanced Raman Scattering (SERS) substrate platform based on a common filter paper adsorbed with plasmonic nanostructures. Paper based SERS substrate overcomes many of the challenges associated with conventional SERS substrates based on rigid substrates such as silicon and glass. The paper-ba…
A metal nanoparticle core can be formed in two different ways: by sequential and by parallel growth. Sequential growth is achieved by elemental reaction M n + M = M n + 1, whereas parallel growth is achieved by M x + M y = M x + y . If the process of the core growth is random, then the particle size distribution is Ga…
The spectral and coherent properties of nitrogen-vacancy (NV) centers in diamond are described, together with the techniques used for their experimental investigation. Particular attention is given to recently developed methods of initialization and spin-state identification for a single NV center or a spin system bas…
A 3D computer modeling and simulation has been used to predict crystallization kinetics and crystal morphology in polymers under the non-isothermal condition. A parametric study is used to explore the influences of thermal conditions on the crystallization. The results indicate that cooling rate has a strong impact on…
In this paper, we present the design and development of a magnetic resonance imaging (MRI)-compatible tendon-driven robot to overcome the limitations of our previous minimally invasive neurosurgical intracranaial robot (MINIR). In this prototype, the robot is made of plastic and the MRI-compatible shape memory alloy (…
Polycrystalline samples of degenerate n-type KxBa8−xZnyGe46−y (y∼8-x/2) with the type-I clathrate structure (No. 223, Pm3¯n) were prepared by powder metallurgy to obtain a high-efficiency Ge-based clathrate. Their Zn atoms preferred to exist at the 6c site in the framework, and consequently, the samples with x around…
Citrate-nitrate method was used to synthesize (Fe,Co)/MgO-Al 2 O 3 , (Fe,Mo)/MgO-Al 2 O 3 , and (CoMo)/MgO-Al 2 O 3 catalysts for production of carbon nanotubes. Multi-walled nanotubes were formed on these catalysts by catalytic pyrolysis of a propane-butane mixture.
The potentials of dynamic extraction in rotating coiled columns ( RCCs ) for the speciation analysis of soils, sludges, and bottom sediments is discussed on an example of the fractionation of element forms. A comparative study of the results of the fractionation of the forms of heavy metals differing in physicochemica…
Metal sorption on carbon plays an important role in a range of applications, including batteries, supercapacitors, and nuclear reactors. In particular, understanding sorption of radioactive isotopes, such as Cs and Sr in different graphite materials, is important for establishing nuclear reactor safety. This work uses…
Regarding the increasing interest in underground transmission systems, gas-insulated lines (GIL) represent an attractive alternative to cable solutions. Changes in the regulatory framework with respect to planned extensions of extra high voltage (EHV) systems have intensified the demand for underground transmission li…
The effect of the microstructure of titanium dioxide on the structure, thermal stability, and catalytic properties of supported CuO/TiO 2 and CuO/(CeO 2 -TiO 2 ) catalysts in CO oxidation was studied. The formation of a nanocrystalline structure was found in the CuO/TiO 2 catalysts calcined at 500°C. This nanocrystall…
The electric field (E-field) distribution on transmission line composite insulators is one of the primary factors impacting its long term performance. This panel session paper will present the expected E-field distributions on composite insulators in-service as well as the resulting aging and degradation modes if the…
Abstract Salt leaching technique has been employed to produce polycaprolactone (PCL) based porous tubular matrix. Salt was dispersed into PCL solution in chloroform and the subsequent leaching of salt was accomplished in water. The effect of salt and polymer concentration on the mechanical properties, porosity and sur…
The accumulation of fly ash leads to severe problems in ecological environments. Various ways to excite the activity of fly ash in Portland cement based cementitious materials have been carried out for many years. In the present study, effect of large volume of fly ash in phosphate cement was studied. Dead burned magn…