Materials Literature
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The effect of rapid thermal annealing on the optical and structural properties of GaAsBi/GaAs quantum wells (QWs) is investigated. The photoluminescence (PL) spectra of the samples are measured at 80 K and room temperature before and after rapid thermal annealing, to ascertain any improvement in the optical quality of…
Au/Ag bimetallic dendrites were synthesized successfully from the corresponding aqueous solution via the AC electrodeposition method. Both of the morphologies and compositions could be tuned by the electrolyte concentration and AC frequency. The prepared bimetallic dendrites were characterized by scanning electron mic…
:In recent decades, intangible assets have become crucial to competitiveness, not only for large companies, but also for small and medium-sized enterprises (SMEs). Despite the existence of multiple methods and techniques for measuring firms' intangible assets, few practical applications are described in the literature…
Alkali activated binders require the addition of a mineral-rich amorphous silica and alumina. This paper proposes the use of a mineral residue from the burning of sugar cane bagasse. The alkali activated mixtures were prepared containing binary mixtures of sugar cane bagasse ash (SCBA) and other mineral admixtures: fl…
Nano-Ag incorporated hydroxyapatite/titania (HA/TiO 2 ) coatings were deposited on Ti6Al4V substrates by the plasma electrolytic oxidation process. Compared with the substrate, the deposited coatings display attractive mechanical and biomedical properties. First, the coatings have stronger wear resistance and corrosio…
A two-parameter analytical model is constructed to describe a thin, magnetically soft, circular disk in the vortex state. The model is capable of describing the change in evolution of net magnetization and of vortex core position when the core interacts with a magnetic pinning site. The basis of the two-parameter mode…
Abstract A significant part of the knowledge used in the production processes is represented with natural language. Yet, the use of that knowledge in computer-assisted decision-making requires the application of appropriate formal and development tools. An interesting possibility is created by the use of an ontology t…
This paper reveals the manufacturing process and static impact resistance of sandwich structural hybrid laminates composed of high-resilience bonding polyester /Kevlar intra-ply hybrid nonwovens and E-glass woven fabric. The effects of various weight ratio of Kevlar fiber on the mechanical behaviors, including tensile…
Between the nano and the macro states there is a size boundary whose existence is explained within the framework of the Debye model of behaviour of phonons in crystals. If the particle size is such that a phonon with a wavelength greater than the Debye wavelength is unable to propagate, then the substance acquires dif…
GRAINS FROM MURCHISON. N. Liu, M. R. Savina, R. Gallino, A. M. Davis, S. Bisterzo, F. Kappeler, N. Dauphas, and M. J. Pellin, Department of the Geophysical Sciences, The University of Chicago, Chicago, IL, 60637, USA (lnsmile@uchicago.edu); Chicago Center for Cosmochemistry, Chicago, IL 60637, USA; Materials Science D…
The effects of printed circuit board electroless nickel immersion gold (ENIG) and organic solderability preservative (OSP) surface finishes on the electromigration reliability and shear strength of Sn-3.5Ag Pb-free solder bump were systematically investigated. In-situ annealing tests were performed in a scanning elect…
본 논문에서는 유연성 기판을 이용한 새로운 광대역 메타물질 구조의 흡수체를 제안하였다. 제안된 메타 물질 구조의 단위 셀은 유연성 있는 폴리이미드 기판 위의 동일 평면상에 놓여진 ELC 공진기와 cut-wire 구조로 이루어졌으며, 설계주파수 대역 밖에서 레이더 단면적(RCS) 값을 감소시키기 위하여 제안된 구조의 금속 패턴 층은 입사 전자파의 진행방향과 평행하게 놓았다. 총 33×45개의 단위 셀들의 배열로 이루어진 흡수체 시작품을 제작하고, 측정한 결과, 주파수 9.06 및 15.0 GHz에서 각각 92 % 및 93 % 이상의 최대 흡수율과 75 %의 full-…
The m-connectivety and m-sum connectivity indices of G are defined as to be and where runs over all paths of length m in G and di is the degree of vertex νi. In this paper, we give explicit formulas for the second-connectivity and second-sum-connectivity indices of an infinite class of Armchair Polyhex Nanotubes TUAC6…
Abstract Clad aluminium strips are used in the automotive industry to manufacture parts of heat exchangers. They are characterised by favourable strength properties, good corrosion resistance and susceptibility to plastic deformation, and can undergo surface brazing at a temperature of about 600°C. As a result of stud…
Simulation on protein G domain B1 (1GB1) have been performed using NAMD2. This protein is well-known for its high termal stability (melting point about 363 K) and attract many scientists to study it. The aim of this research is to study the effect of mutation on salt-bridge pairs GLU15-LYS4 to the thermal stability of…
Abstract This paper describes the development of a facile and environmentally friendly strategy for supporting palladium nanoparticles (Pd NPs) on multiwalled carbon nanotubes (MWCNTs) with ethanol as the solvent/reducing agent, potassium tetrachloropalladate(II) (K2PdCl4) as the Pd precursor, and polyvinylpyrrolidone…
In this work, both separate dipyrromethene and copper corrole derivatives and a specifically designed copper corrole-dipyrromethene conjugate were applied for gold electrode modification. The various oligopyrrole materials were used for copper complexation toward the preparation of different types of electroactive sel…
Measurements and calculations of the heat of explosion and acceleration ability of aluminized compositions based on hexanitrohexaazaisowurtzitane, a promising high explosive, showed that the indicated parameters of such mixtures substantially exceed those of HMX-based counterparts. Creating aluminized nanocomposites t…
Inkjet-printed indium-zinc oxide (IZO) thin-film transistors (TFTs) were prepared at a processing temperature of 200 °C for the first time. The formulation of the inkjet solution and the process optimization resulted in a mobility of 0.45 cm 2 /Vs, a threshold voltage of 7 V, an on-to-off current ratio of 10 5 and a s…
The free energy, entropy, and work of water vapor adsorption in planar pores with widths of 0.62 and 1.25 nm located in a silver iodide crystal parallel to its basal face have been computed at the molecular level. In contrast to adsorption on a free surface, the adsorption in the pores proceeds in three stages, i.e.,…