Materials Literature
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Alumina reduction method using continuous-wave laser has been researched for aluminum production from Lunar regolith. The existence of aluminum on the alumina rod surface after laser ablation was confirmed from the hydrogen bubble generation in NaOH solution. In this research, the observation and element identificatio…
Bu çalışmada farklı atkı sıklığı ve iplik numaralarından oluşan dokuma kumaşların örtme faktörü ve gözeneklilik parametreleri ile ses yutuculuk davranışları arasındaki ilişki incelenmiştir. Bu amaçla üç farklı atkı sıklığı ve dört farklı numarada atkı ipliği kullanılarak dokuma kumaşlar üretilmiştir. Kumaşların gramaj…
Coronavirus Disease-2019, known as COVID-19, has been declared a public health emergency of worldwide concern [1-4]. This paper reports a new design of Surface Enhance Raman Spectroscopy (SERS) substrate that can deliver higher sensitivity and the closest interaction to the target structure of the hot spots for the im…
The behavior of Ag/Au/Cu nanoparticles dispersed on Si substrates during heat treatment was studied by molecular dynamics in this paper. Whether for the thermal welding of homogeneous metal nanoparticles or heterogeneous metal nanoparticles, it was found that the fundamental reason for the contact between the surface…
In this communication, we report theoretical analysis of the contribution of surface energy to the energy dissipation during the growth of a tin whisker in a tin film. The mass transport of tin for the growth of the tin whisker is grain-boundary diffusion. The surface energy hinders the growth of the tin whisker. Ther…
In this study, the antibacterial properties of 100% cotton terry towels, electrosprayed with gum tragacanth/ZnO nanoparticles are investigated. Various concentrations of gum tragacanth/ZnO in water and water–ethanol (70:30) are electrosprayed and evaluated by SEM. The results show that increasing the amount of ZnO (up…
The fiber injection molding process is an innovative approach for the manufacturing of long fiber nonwoven preforms with little to no waste. An important property for the mechanical characteristics of the composite parts is the fiber orientation of the fiber injection molded nonwovens. In this paper a newly developed…
Understanding the influence of edge toroidal rotation in confined plasmas on the L-H transition is important for improving the plasma performance of future fusion devices. We report the results of experiments on the Experimental Advanced Superconducting Tokamak (EAST) to study this relationship. We used edge toroidal…
In the recent years, many researches focus on “waste to wealth” concept, where agro-waste is converted into various valuable products especially on natural fiber polymeric composites. Selected fibers for this research were rice husk (RH) and coconut husk (CH). This research focused on the property enhancement of RH-CH…
Widening the flammability limits of solid fuels used in ramjet engines broadens the operational range of altitudes and speeds and enhances the possibility of autoignition from incoming air alone. This experimental research examines the mechanisms controlling the solid fuel lower flammability limit while maintaining or…
This paper presents the effect of shape geometry on electromagnetic radiation (EMR) emissions from sintered aluminium preforms during deformation under unrestricted quasi-static compression. The EMR emissions under compression show shape anisotropy. The end surface conditions of the compressing platens, i.e. lubricati…
A high polarization resistance (Rp) at intermediate temperature (500–800°C) operation has become one of the major challenges in the development of proton-conducting fuel cells (PCFCs). Rp is the resistance of the cell that contributes by the electrodes parts which are anode and cathode as well as their interfacial com…
The concept of open data and software for electric propulsion is discussed and exemplified by an open database that contains over 40 years of thermionic orificed hollow cathode experimental data. Because scaling laws for electric propulsion devices must be verified over a wide range of operating conditions, access to…
Iron oxide nanoparticles (Fe2O3NPs) have shown wide biological applications in magnetic resonance imaging (MRI), drug delivery, gene therapy, cancer treatments, in vitro diagnostics (IVD), and vaccine and antibody production. Although Fe2O3NPs have a variety of applications, few studies have demonstrated that exposure…
Abstract The transient coarsening behavior of poly-disperse particles that aggregate into clusters was studied using a phase-field model in two dimensions. The effects of two characters of the cluster, i.e. , particle number N c and particle density ρ c in a cluster, on the kinetics of transient coarsening are systema…
Abstract The crystal structure of new isostructural compounds MgCo2Ga5 and MgNi2Ga5 has been investigated using single-crystal X-ray diffraction. Both compounds represent a new type of structure: orthorhombic, space group Pnnm, oP16, with the following lattice parameters: a = 6.2700(2) Å, b = 6.6946(2) Å, c = 6.0789(2…
The focus of this experimental research was to characterize the ignition delay and combustion performance of non-toxic reactants as a viable replacement for highly toxic propellants, such as hydrazine. The liquid reactants consisted of blends of N,N,N',N'-tetramethylethylenediamine (TMEDA) fuel and white fuming nitric…
Silver (Ag) film etching was studied with a focus on suppressing the surface roughness induced by Cl2 and CF4 plasmas. After Cl2 plasma etching, roughening of the Ag surface was observed. From in situ x-ray photoelectron spectroscopy and atomic force microscopy analyses using a plasma beam system, the Ag surface was r…
This work presents a Green's function approach, originally implemented in graphene with well-defined edges, to the surface of a strong 3D topological insulator with a sequence of proximitized superconducting (S) and ferromagnetic (F) surfaces. This consists of the derivation of the Green's functions for each region by…
Woven composite laminates are rapidly replacing unidirectional composite laminates in terms of structural application. Nevertheless, the deformation theory for woven laminate has not been well established compared to unidirectional laminate. Thus, this paper aims to investigate the deformation behavior of woven lamina…