Materials Literature
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Analytical and numerical methods are used to solve Poisson's equation for carbon nanotube field-effect transistors (FETs) with a cylindrical surrounding gate and Schottky-barrier contacts to the source and drain. The effect on the nanotube potential profile of varying the work functions of all the electrodes, and the…
Abstract C 14 H 13 ClCuN 2 O 5 , monoclinic, P 12 1 / n 1 (No. 14), a = 9.559(2) Å, b = 11.024(2) Å, c = 14.397(4) Å, β = 104.75(2)°, V = 1467.1Å 3 , Z = 4, R gt (F) = 0.034, wR ref (F 2 ) = 0.089, T = 293 K.
The individual and joint effects of alloying with copper, silicon, and molybdenum as well as titanium and niobium on the electrochemical corrosion and mechanical properties of chromium-nickel steel are investigated. It is shown that under the conditions of some corrosive media the chromium-nickel-molybdenum steel can…
Using the Kol'sky method, the authors studied dynamic diagrams of uniaxial compression of aluminum alloys AD-1, AMg-6, and D-16. These alloys are applied in aviation, space technologies, shipbuilding and many other industries. Alloys similar to the above mentioned alloys have been studied abroad as well (for example,…
K Vogel, A Lenk, H Lichte, H-J Engelmann, U Mühle, B Freitag; Off-axis Electron Holography for 2D Dopant Profiling in p- and n-Metal Oxide Semiconductor Fi
The aim of this paper is to compare visco-plastic behavior of lead and a lead alloy over a wide range of temperature and strain rate. Compression test data have been obtained on stress variation with strain. Quasi-static compression tests were carried out on a MTS facility, while dynamic test results were obtained usi…
Abstract Stable protected 3‐triisopropylsilylethynylpyrrole, 4b , was prepared in the yield 73% by first observed selective deprotection of double protected 1‐triisopropylsilyl‐3‐triisopropylsilylethynylpyrrole, 3b , which was obtained in the yield 44%. This deprotection in preference proceeds at the pyrrole nitrogen…
Composite materials are used in applications that require protection against high velocity impacts by fragment simulating projectiles. In this work, the ballistic performance of two commercially available materials against a fragment simulating projectile (FSP) is studied. The materials used were an aramid fiber with…
The Varying Temperature Irradiation Experiment in the High Flux Isotope Reactor (HFIR) was carried out in the framework of the Japan-USA fusion cooperation program (JUPITER). The objective of the experiment is to investigate the performance of fusion structural materials subject to temperature variation during operati…
Mixed lead chloride oxalate, Pb 2 Cl 2 (C 2 O 4 ), has been obtained in a polycrystalline form in the course of a study on precursors of nanocrystalline PZT-type oxides. Its crystal structure has been solved ab initio from powder diffraction data collected using a monochromatic radiation from a conventional X-ray sour…
Approaches to the spatial harmonic characterization of the field due to a symmetrically shielded permanent bar magnet are presented. At first, exact spherical harmonic coefficients are obtained for a given unshielded magnet and comparisons are made with the coefficients of unshielded numerical models. In the calibrati…
An experiment analyzing the kinetics of dissolution of a solid with cylindrical geometry in water is presented. The dissolution process is followed by measuring the solid mass and its size parameters (thickness and diameter) as a function of time. It is verified that the dissolution rate follows the Nernst model. Data…
The N-doped TiOx films, coated on glass substrates, were prepared by DC reactive magnetron sputtering using Ti metal target in a mixture of Ar, O2 and N2. The dependence of the films composition on ratio of N2 partial pressure to total pressure was investigated using X-ray photoelectron spectroscopy (XPS). The XPS res…
L Kolesnikova, W Slenczka, H-R Brodt, H-D Klenk, S Becker; Electron microscopy in diagnostics of SARS case, Microscopy and Microanalysis, Volume 9, Issue S
Abstract We describe the syntheses of Boc‐protected amino acids bearing the chromophores pyromellitic diimide, naphthalene diimide, and pyrene in their side chains, as well as nucleo amino acids with the artificial purines 7‐carbaguanine, 7‐carbaadenine, isoadenine, and 7‐carbaisoadenine covalently linked to the alany…
We studied a new method of preparing a Nd-Fe-B-bonded magnets by compacting and rolling or stamping, and applications to small dc motors were examined. Consequently, we developed new preparation processes of Nd-Fe-B-bonded magnets using materials other than Nd-Fe-B melt-spun powder. It was found that applications of t…
Abstract Three kinds of steels were studied using electrically connected hanging specimen in the corrosion simulation device and offshore long scale hanging specimen. The experimental results obtained by the two methods show that the device can better reflect the offshore corrosion environment. A Ni‐Cu‐P steel specime…
Vladislav Krzyzanek, Rudolf Reichelt; MONCA: A New MATLAB Package for Monte Carlo Simulation of Electron Scattering in Thin Specimens in the Energy Range 1
Uniform attachment of enzymes to solid surfaces is essential in the development of bio and optical sensor devices. Immobilization by adsorption according to hydrophilic or hydrophobic nature is dependent on the charges and defects of the support surfaces. Sol-gel SiO2 densified glass surfaces, frequently used as suppo…
Abstract The effects of ZrO 2 addition with various particle sizes (1, 3, and 56 μm) and various amounts (0, 1, 3, 5, 7, 9 wt. %) on structure, oxygen permeation, and stability of SrCo 0.4 Fe 0.6 O 3−δ (SCF) were investigated. XRD and EDX analysis revealed that the dissolution of Zr cation into the B site of SCF phase…