Materials Literature
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Native celluloses from different origins show variant solubility in lithium chloride/amide solvent system. The solubility of some of native cellulose is enhanced by solvent exchange procedure, namely sequential immersion in water, acetone, and amide solvents. In order to investigate the effect of the solvent exchange…
The phase composition of carbon nanotubes (CNTs) with encapsulated iron atoms was studied by 57 Fe Mössbauer spectroscopy. The synthesis of CNTs was shown to stabilize iron atoms as both thermodynamically stable iron carbide and oxide phases and phases not characteristic under synthesis conditions (γ-Fe and γ-Fe 2 O 3…
Polyvinyl chloride (PVC) fibers incorporated with graphene nanoflakes were produced using electrospinning technique, and then superhydrohobicity of the electrospun nanofibers were investigated as a function of inclusion and temperature. In the absence of graphene, water contact angle of the fibers is below 140°; howev…
The effect of surface roughness on the fouling behavior of calcium carbonate is experimentally investigated. The real operating conditions of a tubular heat exchanger are simulated by performing prolonged experiments with duration of 3 to 7 days. The solution used is a mixture of sodium bicarbonate and calcium chlorid…
The rheological properties of 5% solutions of a fiber-forming polyamidobenzimidazole in DMAA containing LiCl additives and polyamidobenzimidazole-polysulfone blends in the same solvent have been studied. The total concentration of polymer blends with various component ratios is 5 wt %. At temperatures below ∼110°C, th…
Cu interconnects have been used extensively in ULSI devices. However, large resistance‐capacitance delay and poor device reliability have been critical issues as the device feature size has reduced to nanometer scale. In order to achieve low resistance and high reliability of Cu interconnects, we have applied a thin T…
The high frequency (∼100 kHz) dependence of Pb1.1(Zr0.53,Ti0.47)O3 (PZT) piezoelectric characteristics was investigated. PZT films were prepared onto Pt/Ti/SiO2/Si substrates using a chemical solution deposition process. A twin-beam laser doppler equipment system was developed for determining the piezoelectric charact…
The adhesion between silver paste film and ceramic substrate was improved by an incorporation of SnO2 conducting oxide. The SnO2 incorporated silver paste composite film was prepared by SnO2 solution pouring into commercial silver paste. The SnO2 in silver paste film was crystallized through high temperature anneal an…
Hyperbranched polyol Boltorn H20 and polycarboxyBoltorn H20 synthesized on its multifunctional nanoscaffold influence catalytic activity of aspartic proteinase Candida albicans (C. alb.). The results of study catalytic activity proteinase C. alb. in relation to hemoglobin at presence Boltorn H20 show, that the effect…
Y2O3 nano-phase powders were prepared by polyacrylamide gel method. The mechanism of polyacrylamide gel process and its calcinations procedure were analyzed. The high purity yttria powders can be produced by polyacrylamide gel method at the calcination temperature of 850°C, which is about 100°C lower than prepared by…
The electrochemical deposition of poly(para-phenylene)vinylene (PPV) into the pores of porous silicon (PSi) has been investigated using acetonitrile as solvent and -xylylene- -bis(triphenylphosphonium chloride) as precursor. PPV was successfully deposited onto various Si substrates and PSi layers. It was also deposite…
Solid polymer blend electrolyte films based on PVP/PVA complexed with KI were prepared by the solution cast technique. Various experimental techniques such as electrical conductivity and transport number measurement were used to characterize the polymer electrolyte films. Electrochemical cells with the polymer electro…
The system of MnFeP 1− x As x is a candidate of a magnetic refrigerator material. We have investigated the temperature ( T )- and magnetic field ( H )-dependence of the magnetic properties of the Mn and Fe ions for Mn 0.9 Fe 1.1 P 0.55 As 0.45 using a soft x-ray magnetic circular dichroism (XMCD) in the regions of the…
Physical and chemical properties changes in a polymer have been studied for polycarbonate (PC) implanted with 100 keV Ni+ ions with varying fluence from 1 × 1014 to 1 × 1016 ions/cm2. The changes in the surface morphology and composition have been observed with atomic force microscopy (AFM) and X-ray diffraction (XRD)…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation R. Ribichini, F. Cegla, P. B. Nagy, P. Cawley; MODELLINGOF ELECTROMAGNETIC ACOUSTIC TRANSDUCERS O…
Corrosion behavior of mild steel in acidic medium using Adhatoda Vasica (AV) extract was investigated. The inhibitive effective of Adhatoda Vasica on the corrosion of mild steel in different acidic medium has been studied by weight loss and polarization methods. The E corr values are shifted slightly towards negative…
It has recently been observed that strong quadratic magneto-optical Kerr effects (QMOKE) are present in cobalt-based Heusler compounds thin films. In this contribution we present a magnetometer dedicated to the study of QMOKE in magnetic thin films. The system consists of two MOKE magnetometers working in tandem, and…
Iron oxides nanocrystals are largely used for biomedical applications due to their high magnetization. Furthermore for in vivo applications these nanoparticles must be covered with a non-toxic material. Inside the numerous nano-systems for drug delivery, lipid structures, such as Solid Lipid Nanoparticles (SLNs), have…
AISI 420 stainless steel implanted by Ag/Cu ions was fabricated for antibacterial purpose. The implantation of Ag/Cu ions was in a total dose of 2 × 1017ions/cm2at an extracting voltage of 50 KV. The chemical composition of the implanted layer was characterized by X-ray photoelectron spectroscopy (XPS). The Ag/Cu impl…
A recent discovery of complicated isotope shifts of PL 1014‐meV line in Cu‐containing silicon, which was made by Thewalt’s group, indicates that existing models of Cu pair are not appropriate for the luminescence center. Our previous study shows that the most probable form of the complex is a four‐membered complex Cu(…