Materials Literature
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A series of blend films of cellulose and chitosan were prepared from 1-ethyl-3-methyl imidazole acetate ([Emim] Ac) by coagulating with ethanol. Structure, mechanical properties, thermal stability and antibacterial properties were investigated. The results showed that there were strong interactions and good compatibil…
For the 45 nm interconnect technology node, porous dielectric materials (p-SiOCH) have been introduced, leading to complex integration issues due to their high sensitivity upon FC etching and ashing plasma exposure [1, 2]. Thanks to Metallic hard mask (MHM) integration high selectivities towards dielectric materials (…
The electron-energy spectrum of k -layer graphenes ( k = 1–4)-both pure and with alkaline metals (M: Na, K, Rb, Cs) incorporated in the interlayer space-has been investigated. The concentration of “guest atoms” x varied. A computation procedure based on the density functional theory generalized to the case of periodic…
Based on principles of the differential effect and the wicking effect, the coolmax fiber and the cotton fiber were selected as raw materials, and with these materials, a kind of special functional double-sided pique fabric was developed on the double-sided knitting machine. The designing principles of the fabric and t…
Heterogeneous reactions of tested particles proceeding on electroactive films with different kinds of thin pores are described formally in terms of diffusion equations complicated with an accompanying volume reaction inside the film interior. As it is shown, in polarization curves of such processes, there might appear…
In the paper the patterns of inelastic deformation of angle-ply carbon fiber composites with different packing angles by uniaxial stretching are considered. The unified diagram for different packing for the deformation of a unidirectional layer at a shear has been obtained, which allows the use of a simplified approac…
A Monte Carlo model is presented, in which the interface anisotropy is primarily inclination dependent. A dual grid method is used to determine boundary inclination in discretized digital microstructures. Evolution of the grain boundary character distribution (GBCD) in polycrystalline systems, from an initially random…
Abstract According to generally accepted world practice, evaluation of the reactor pressure vessel (RPV) material behavior during operation is carried out using tests of surveillance specimens. The main objective of the surveillance program consists in insurance of safe RPV operation during the design lifetime and lif…
Environmental responsibility is increasing in importance to both consumers and industries. Biopolymer like poly (lactic acid); PLA is an interesting polymer to replace existing petroleum-based material. PLA is very rigid but inherently brittle and easily thermal degraded during processing. To improve the toughness of…
Deleterious chlorine fluorescence was found to occur at the same frequency as the Raman scattering of O2(1Δ) and O2(3Σ), seriously affecting the O2(1Δ) yield measurement in the reaction of chlorine with basic hydrogen peroxide by use of the Raman spectroscopy technique. To solve this problem we have taken advantage of…
Oligochitosan salt-based antibacterial wound gels were developed and evaluated in both in vitro and in vivo models. The antibacterial activities of the oligochitosan salts and the wound gels were investigated against Staphylococcus epidermidis RP625 and Escherichia coli ATCC 11775. The minimum inhibitory concentration…
Field effect transistors (FETs) whose channel is composed of a network of high-quality single wall carbon nanotubes (SWNTs) have been studied to investigate the mechanism of the device operation via scanning gate microscopy (SGM) at room temperature. SWNTs synthesized by CoMoCAT® process was used for the formation of…
We synthesized carbon-coated iron magnetic nanoparticles by a low cost method using Ferric nitrate as the iron precursor and starch as both reductive agent and carbon source under H2 atmosphere. The structure, size distribution, phase composition, magnetic properties and oxidation resistance of the particles were inve…
Hypercoiling poly (styrene-alt-maleic anhydride) (PSMA) is known to undergo conformational transition in response to environmental stimuli. This behavior allows it to associate with the phospholipid,2-dilauryl-sn-glycero-3-phosphocholine (DLPC) to produce nanostructures analogous to lipoproteins. The complex represent…
In the present work, for the description of grain coarsening, a probabilistic and a deterministic 2D cellular automaton simulation setup were developed. The results of the simulation have been validated by solution annealing experiments of austenitic stainless steel 304L (Fe-18Cr-8Ni) at different temperatures and tim…
A phase field model to study the microstructural evolution of a polycrystalline dual-phase material with conserved phase fraction has been implemented, and 2D simulations have been performed. For 2D simulations, the model predicts the cubic growth well-known for diffusion-controlled systems. Some interphase boundaries…
Abstract It has been suggested that when tool steels are exposed to temperatures around the boiling point of liquid nitrogen (−196°C) for extended periods some properties of the steel, particularly wear, are improved. Dissenters claim that the improvements are due to statistical variation and cannot be reproduced cons…
The grain structure and texture evolution during annealing an Al-0.13%Mg submicron grained alloy, deformed by plane strain compression (PSC) at cryogenic temperatures, has been investigated. On annealing the grain structure coarsened and transformed from lamellar to equiaxed. But, remarkably, the fraction of low angle…
This paper proposes a load-balanced parallel computing method of smooth particle hydrodynamics, including computational scheme, parallel program, and parallel project logic. The strengths and weaknesses of the method are addressed through theoretical analysis. The method enables to conduct numerical damage impulsion s…
Cu post-CMP clean is important to keep both Cu and low-k dielectric clean after polishing. In this paper, two Cu post-CMP clean solutions are analyzed in electrochemical, physical and electrical characterizations, based on the material and integration scheme of imec 65nm platform. It is shown that the combination of t…