Materials Literature
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Authors investigated optimization of NH3plasma surface pre-clean treatment using Cu silicide formation in order to improve electromigration (EM) and stressmigration (SM). NH3plasma treatment removed Cu oxide but also led to reduced Cu silicide at the Cu/capping layer interface. Despite Cu oxide removal, EM/SM was obse…
In this paper, the pure chitin fiber spunlace nonwoven was made from raw material chitin 100 fiber, and its processing technique was improved from traditional one. The performance comparison tests under different processes and traditional process were conducted, test results showed that pure chitin fiber spunlace nonw…
Supported H3PW12O40 (HPW) and supported Cesium-Substituted dodecatungsto-phosphate are eco-friendly solid acid catalysts. A series of different loading H3PW12O40/SiO2 and HPW/diatomite were prepared by a typical incipient wetness impregnation of methanol, meanwhile SiO2 and diatomite supported Cs-salt catalysts were p…
Bismuth titanate solid solutions, Bi12+xTiO10+δ (0 ≤ x ≤ 0.6), were synthesized by conventional solid state method at sintering temperature of 700°C for 48 h. Structural studies were performed by powder X-ray diffraction (XRD) analysis and revealed that single-phase materials were obtained with a general formula of Bi…
A uniaxially oriented film of ferroelectric vinylidene fluoride (VDF) oligomer was fabricated by vacuum deposition on a friction-transferred vinylidene fluoride–trifluoroethylene copolymer; i.e., P(VDF/TrFE), film as a structural template. Fourier transform infrared spectroscopy and scanning electron microscopy measur…
Effects of different components, autoclaving temperature and autoclaving time on the microstructure features and mechanisms of hydrothermal reactions of activated saline soil were investigated by using XRD, DAT and other microstructural analytical methods. Collected from Tianjin Binhai New District, the mainly raw mat…
This paper is a review of the literature data on metamaterials with a network structure, which are currently the most promising type of metamaterials for obtaining a negative refractive index in the optical region. “Monomolecular” layers of metamaterials of this type with a negative refractive index in the IR and visi…
An orthonormalized basis describing the single-hole states of the CuO 2 plane has been constructed exactly taking into account the p - d exchange coupling between the spins of a hole and the two nearest copper ions. The introduced basis makes it possible to include the effects caused by the dependence of the Heisenber…
We firstly propose a novel resistive random access memory (RRAM) cell structure, which makes it possible to minimize the switching area and to maximize the electrical field where resistive switching occurs, resulting in the improvement of resistive switching characteristics. With excellent structural advantages, resis…
In this work, we have investigated and optimized the fabrication process of ammonia sensor based on poly (styrene-co-maleic acid) partial isobutyl/methyl mixed ester/single-wall carbon nanotubes (PSE/SWNT) nanocomposite leading to the standardized and highly efficiency of device. The proper ratio of sensing material l…
The silicon particle reinforced Zinc-based composites was fabricated using gravity casting technique with sodium salt as modifier. The microstructure and mechanical properties of silicon particle reinforced Zinc-based composites was studied by the metallurgical microscope, scanning electron microscope (SEM), impact to…
In this study, a computer program for calculating fatigue life of component is developed and introduced in LS-PrePost software. The program is written in Fortran programming language and the fatigue life equations used is taken from well-published literature. The materials covered are steel and aluminum. The developed…
Using the field-ion and field-electron microscopy techniques, it is demonstrated that the efficiency of formation of field-induced-emission sources with developed (multipoint) surfaces can be increased due to the phenomenon of evaporation in a strong electric field in the presence of an active gas. The proposed emitte…
Properties of biopolymer films which were blended from pectin and flour were investigated. Pectin was extracted from pomelo peel by using hydrochloric acid. The extracted pectin was high methoxyl that was characterized by FTIR. Biopolymer film was prepared by blending pectin (3% and 5%) and flour (1% of corn flour, ri…
The prospects for cluster theory in the analysis of digital metallographic images of steel’s ferritic-pearlitic microstructure are shown. The distribution and correlation characteristics of pearlite clusters on metallographic images are of particular interest for linear and planimetric analysis.
The suspension system is a prominent piece of material that plays a vital role in the stability of a vehicle. During the service, the suspension system is subjected to different environmental conditions, at the same time it has to sustain a variety of loads. The damage of the springs is mainly attributed by its load c…
In this study, we present a highly selective and sensitive technique for the detection of DNA using kanamycin A-functionalized AuNPs and ethidium bromide (a dye that binds specifically to DNA). Here, we demonstrate the interaction of the kanamycin A-modified-citrate gold nano particles with the DNA. Also, the interact…
Electrical characteristic changes in scaled MOSFET devices have been widely reported due to electron beam (EB) irradiation. For local oxidation of silicon (LOCOS) devices, the effects of EB-induced damage when performing measurements using an SEM based nanoproer, however, have rarely been reported. EB penetration into…
Stress relaxation was studied in a series of low carbon, high Mn microalloyed steels containing 0.012, 0.06 and 0.1 wt% Nb. The stress-relaxation curves were modeled using a physically-based model that takes into account the time evolution of precipitation, recovery and recrystallization as well as their interactions.…
In this paper, we formulated the criteria for evaluating the effectiveness of mixing chambers, needed in obtaining polymeric materials with reproducible properties. The results of comparative analysis of organizing the methods for mixing two multiphase flows of oppositely charged particles are presented. This analysis…