Materials Literature
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Development towards the combination of miniaturization and improved functionality of RFIC has been stalled due to the lack of high-performance integrated inductors. To meet this challenge, integration of magnetic material with high permeability as well as low conductivity is a must. Ferrite films are excellent candida…
This paper describes an analytical model for predicting trapezoid tearing strength of flexible woven composites. The analytical model was established based on the tearing damage behavior of the flexible woven composite sample during experimental tests. It was observed during the test that the tearing force increased g…
The interaction and stability of Ru4POM on few layer graphene via functional groups is investigated by time-dependent imaging using aberration-corrected transmission electron microscopy. The Ru4POM demonstrates dynamic motion on the graphene surface with its frequency and amplitude of rotation related to the nature of…
This paper reports the structure and magnetic properties of ferromagnetic face-centered tetragonal L10-type MnGa isotropic nanocrystalline microparticles prepared by high energy ball milling and subsequent annealing. The L10-type microparticles with a nominal composition of Mn56Ga44size mainly in the range of 10-50 μm…
High values of magnetic permeability and dielectric permittivity of polymer composite containing flake-shaped iron particles were prepared by the mechanical milling of two batches of iron powders [Fe(A) and Fe(B)] under controlled conditions. The frequency-dependent complex permittivity (ε'-jε") and permeability (μ'-j…
Numerical predictions and experimental results in this study verify that plasmas with negative permittivity work as functional media for electromagnetic waves and that their composites with metallic metamaterials show further extraordinary properties. Chain structures of individual plasmas with negative permittivity,…
Transformers are normally designed and built for use at rated frequency and sinusoidal load current. A non-linear load on a transformer leads to harmonic power losses which cause increased operational costs and additional heating in transformer parts. It leads to higher losses, early fatigue of insulation, premature f…
There is a large variety of techniques available to protect metals from various types of corrosion. Till date chromate containing metal coatings is one of the most commonly used methods. Layered clays are basically of two types depending on the type of ion exchange capacity. In the recent years different researchers d…
ABSTRACT Use of scaffolds both as supporting materials at defect site and delivery vehicles for bioactive agents is a commonly employed strategy to aid in tissue repair and regeneration. In this study, fibrous meshes of chitosan were prepared by wet spinning and coated with alginate. BSA as a model protein and gentami…
The experimental work evaluates the potentials of groundnut shell ash (GSA) as a partial replacement for ordinary Portland cement (OPC) in concrete. Chemical analysis of the ash was carried out to ascertain it cementing properties and the partial replacement of OPC by GSA was varied from 0% to 20% in the concrete. A t…
Single crystal diamond synthesis by microwave plasma chemical vapor deposition at rapid growth rate has considerably advanced in the past few years. Developments have been made in growth, optical quality, and mechanical properties. Of the various types of single crystal diamond that can be produced using these techniq…
The structure of a multilayer metal material (MMM) produced from the U8 and 08Kh18N10 steels by the pack-rolling method has been studied using metallography and transmission electron microscopy. It has been found that two process cycles end in the formation of a laminated structure, which is characterized by structura…
Green synthesis of metal nanoparticles is considered to be a cost effective and eco-friendly approach. In the present study copper nanoparticles were synthesized successfully through chemical reduction of different copper salts stabilized by potato starch. The resulting copper nanoparticles were characterized by X-Ray…
A local-interaction model describing the penetration of axisymmetric projectiles into sandy soil at a constant velocity is studied experimentally and theoretically. Two approaches to the determination of the parameters of the quadratic local-interaction model are considered. The first approach is based on the use of t…
The antioxidant and cytotoxic activities of six medicinal plant crude extracts were evaluated in vitro by using different models. In DPPH scavenging method, highest scavenging of DPPH was displayed by Hemidesmus indicus with IC50 values of 190.09 I¼g/ml while IC50 values of the reference ascorbic acid were 18.80 I¼g/m…
BACKGROUND: Hydrochloric acid is used in oil-well acidizing commonly for improving the crude oil production of the low-permeable reservoirs, while it is a great challenge for the metal instruments involved in the acidification. Developing natural products as oilfield chemicals is a straight way to find less expensive,…
Near-infrared (NIR) quantum cutting (QC) through downconversion (DC) in OH− free Nd3+-Yb3+ co-doped low-silica calcium aluminosilicate glasses (LSCAS) was observed. Luminescence and time-resolved measurements allowed the investigation of the origin of the Yb3+ DC emission. Our results showed that only one NIR photon i…
Oxidized copper clusters 2–5 nm in size have been obtained by RF discharge sputtering of a copper wire in an oxygen atmosphere. Isolated CuO clusters or, at long deposition times, their agglomerates form on the support. The thermal stability of the oxidized nanoparticles in a vacuum and their reactivity toward CO in r…
Results of the experimental determination of the threshold voltage of pore formation for n -InP (100) crystals with a charge-carrier density of 2.3 × 10 18 cm −3 are presented. The threshold voltage of pore formation is shown to be a function of the electrolyte composition, in particular, of the acid concentration in…
A biomimetic and facile approach for integrating Fe 3 O 4 and Au with polydopamine (PDA) was proposed to construct gold-coated Fe 3 O 4 nanoparticles ( Fe 3 O 4 @ Au – PDA ) with a core–shell structure by coupling in situ reduction with a seed-mediated method in aqueous solution at room temperature. The morphology, st…