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806 articles for “TEM”
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Preparation and Characterization of Nanosize SnO2 Nanopowders by Precipitation Method
Abstract: Nanocrystalline Tin oxide (SnO2) powders have been synthesized by a direct precipitation method from an aqueous solution in the presence of SnCl4 and NH3. The crystallite size, lattice parameters, dislocation density and number of unit cells in SnO2 nanocrystalline powder (as-prepared and heated) are characterized by X-ray diffraction (XRD). The results of XRD show that pure SnO2 nanocrystalline powder has tetragonal rutile structure; the broad peak indicates small crystallite size …
Published in International Journal of Applied Nanotechnology · Vol. 1, Issue 1-2, 2015 Read article
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Effect Of Capping Agents And Annealing On The Optical Properties Of (Cd0.8-Zn0.2)S And (Cd0.8-Zn0.2)S:Eu Films Prepared By CBD Technique
Abstract: Thin films of (Cd0.8-Zn0.2)S and (Cd0.8-Zn0.2)S:Eu are prepared by Chemical Bath Deposition (CBD) technique on glass substrates at 60ºC temperature by adding Mercaptoethanol and Methanol as capping agents(CA). The films were annealed at 400°C for two minutes and their optical properties were studied. The effect of the presence of capping agents and annealing was investigated. The optical constants such as refractive index, extinction coefficient, optical and electrical conductivity, real and …
Published in International Journal of Applied Nanotechnology · Vol. 2, Issue 1, 2016 · pp. 1–7 Read article
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Cutting Tools with Graphene Coating and Its Uses
Abstract: Graphene attracts a certain interests because of its amazing properties like high temperature operations, high mechanical quality and greasing up properties and so forth. Arshi and Dighewar have examined to enhance surface unpleasantness, apparatus life and creation rate of materials by utilizing a defensive covering of titanium nitride (TiN) over steel devices.[1] They have acquired attractive results. In this paper, we utilize graphene as a covering on metal cutting apparatuses …
Published in International Journal of Applied Nanotechnology · Vol. 2, Issue 1, 2016 · pp. 24–26 Read article
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Synthesis of Silver Nano Particles Using NaBH4 as Reducing Agent
Abstract: Silver nanoparticles (AgNPs) are one of the most vital and captivating nanomaterials between numerous metallic nanoparticles that are involved in various applications. In this paper, we briefly discuss the synthesis of AgNPs properties and application for the nanoparticles. The present work shows that the reduction of silver ions from AgNO3 to Ag occurs due reducing agent. The synthesized silver particles have been characterized by UV – Visible, TEM and XRD …
Published in International Journal of Applied Nanotechnology · Vol. 5, Issue 1, 2019 · pp. 27–33 Read article
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Evaluation of Antimicrobial Activity using Zinc Oxide Nanoparticles
Abstract: The goal of the study was to use common laboratory techniques to create Zinc Oxide nanoparticles in a short amount of time and to check the antibacterial activity of zinc oxide nanoparticles on gram negative and gram positive bacteria. Wet chemical technique was used to make zinc oxide nanoparticles. Activity augmentation for Escherichia coli and Staphylococcus aureus were studied when used in combination with Zinc Oxide Nanoparticles. The Nps are …
Published in International Journal of Applied Nanotechnology · Vol. 7, Issue 1, 2021 · pp. 24–27 Read article
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Radiative Flow of Energy Consumption with Varying Building Structures
Abstract: The current study deals with Radiative flow of energy consumption with varying building structures solved by boundary value problem. Application of heat transfer takes place in Industrial and Engineering sectors to overcome the difficulties which arise from radiations in building construction. This is shown by taking few unique shapes of buildings as examples which are ellipsoid, isohemi hexagon, isohemisphere and torus ring. The heat transfer taking places of these structural …
Published in International Journal of Applied Nanotechnology · Vol. 8, Issue 1, 2022 · pp. 30–43 Read article
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Preparation of Cu2O/ZnO Heterojunction Thin Film Solar Cell grown by RF Magnetron Sputtering
Abstract: Both cuprous oxide (Cu2O) and zinc oxide (ZnO) hold a very important position in the fields of materials science due to great potential in many acoustic, electric and optical applications. Cu2O, a direct-gap semiconductor with band gap energy of 2.0 eV has been regarded as one of the most promising materials for application to photovoltaic cells, especially for the top cell in a tandem structure. The attractiveness of Cu2O and …
Published in International Journal of Energetic Materials · Vol. 1, Issue 1, 2015 · pp. 27–30 Read article
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Noncrystalline Composite and Its Propellant
Abstract: This study writes about forces in light of cross-connected HTPE folio plasticized with nitroxyethylnitramine (BuNENA) as vigorous material and HP 4000D as noncrystalline prepolymer. This fastener was directed with strong stacking in the 85%. The outcomes demonstrated a change in processability, mechanical properties and smoldering rate. Also, its charge conveys (around 6 seconds) higher execution (particular drive) than the best existing composite strong rocket fuel. Warm investigations have performed by …
Published in International Journal of Energetic Materials · Vol. 2, Issue 2, 2016 · pp. 6–8 Read article
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Rocket Propellants as an Efficient Energetic Material
Abstract: Rocket propellant is either a high oxygen containing fuel or a mixture of fuel plus oxidant, whose combustion takes place, in a definite and controlled manner with the evolution of a huge volume of gas. In the rocket engine, the propellant is burnt in the combustion chamber and the hot jet of gases (usually at very high pressures, with combustion temperatures approaching 3000K) escapes through the nozzle at very high …
Published in International Journal of Energetic Materials · Vol. 3, Issue 2, 2017 · pp. 19–22 Read article
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Study of Lattice Parameter and Nanoparticle Size in Lead Chalcogenides (PbX, X= S, Se and Te)
Abstract: In the present paper, the structural and electronic properties have been studied with help of thermodynamic parameter. The lattice parameter and nanoparticle size in lead chalcogenides [(PbX, X=S, Se and Te)] are calculated with help of fitting parameter under the effect of temperature. The calculated values are close agreement with the experimental results. Keywords: Lead chalcogenides, lattice parameter and energy band gap
Published in International Journal of Energetic Materials · Vol. 4, Issue 1, 2018 · pp. 1–5 Read article
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Synthesis and characterization of some organic semiconductor materials for optoelectronics
Abstract: Charge transfer complexes have high molar absorptivities and it’s an important phenomenon in the energy transfer process to increase the conductivity. Charge transfer complexes have been used in organic photovoltaic cells, organic semiconductors. Charge transfer complexes formed between electron donors and acceptors with strong interaction.In this paper, a Charge transfer complexes (CTC) of some organic semiconductor’s materials have been studied spectrophotometrically in chloroform, when the optical absorption of the CTC …
Published in International Journal of Energetic Materials · Vol. 6, Issue 1, 2020 · pp. 14–24 Read article
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Investigation of the Optical-Electrical Properties of Simonkolleite and ZnO: Synergism and Nano/Microcrystals
Abstract: This study aimed to investigate the optical-electrical properties of simonkolleite (SM) and zinc oxide (ZnO), focusing on ZnO's nano/micro size and the synergistic effects between SM and ZnO. The synthesis of SM nanocrystals (NCs) was successfully achieved, and thermal annealing temperature was used to manipulate the formation of SM/ZnO nanocomposites ranging from NCs to microcrystals of ZnO. Structural and morphological properties were characterized using X-ray diffraction (XRD),Fourier transforms infrared (FT-IR), …
Published in International Journal of Energetic Materials · Vol. 8, Issue 2, 2022 · pp. 18–30 Read article
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Enhancing Battery Management Systems: Innovations in State-of-Charge Estimation
Abstract: A Battery Management System (BMS) is crucial for managing the electronics of rechargeable batteries, ensuring their safe and efficient operation. This is particularly important for lithium-ion (Li-ion) batteries, which are preferred in electric vehicles and energy storage systems due to their high energy density, low self-discharge rates, long cycle life, and broad operating temperature ranges. The primary functions of a BMS include monitoring the state of charge (SOC), managing battery …
Published in International Journal of Energetic Materials · Vol. 9, Issue 2, 2023 · pp. 5–11 Read article
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The Metallurgical Properties of Beryllium
Abstract: Beryllium is a toxic bivalent element, steel gray, strong, light-weight, primarily used as hardening agent in alloys. Beryllium has one of the highest melting points of the light metals. It has excellent thermal conductivity, is nonmagnetic, it resists attack by concentrated nitric acid and at standard temperature and pressures beryllium resist oxidation when expose to air. Keywords: Beryllium, metallurgical properties, applications, uses
Published in International Journal of Metallurgy and Alloys · Vol. 3, Issue 2, 2017 · pp. 1–3 Read article
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Steel in Marine Weather
Abstract: Offshore structures of steel are reviewed after suitable application at onshore. Coat of stitch pad wet weld heat treat is subjected to improve the properties from high strength low alloy steel. Underwater welding with or without environment has modifications from the use of weld heat to heat treat, selection of electrodes containing silicates and polymer agglomerates to induce more heat of weld and penetration. Typical coat crack detect inswing from …
Published in International Journal of Metallurgy and Alloys · Vol. 7, Issue 1, 2021 · pp. 1–8 Read article
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Polycarbonate/ABS Alloys: Production, Testing and Applications—An Overview
Abstract: The commercial production of polycarbonate (PC) began in 1958; the commercialization of the polycarbonate/ABS blends started in 1977. The incorporation of ABS to PC minimizes its drawbacks without altering its superior mechanical properties. Blending of PC and ABS also generates other useful characteristics i.e. glossiness and low temperature toughness. Blending of both the polymers is being carried out in a twin-screw extruder or in a common solvent like Tetrahydrofuran (THF).Nowadays …
Published in International Journal of Metallurgy and Alloys · Vol. 7, Issue 1, 2021 · pp. 32–37 Read article
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Basic Principles and Techniques in Powder Metallurgy
Abstract: This study provides a brief overview of recent advances in powder metallurgy methods, and their applications as challenges encountered throughout the research. The primary goal of this paper is to showcase the different uses of modern powder metallurgy technology and to inspire visitors to learn more about these topics and produce more papers about it. Metallic injection moulding (MIM) is another term for advanced powder metallurgy. The technique could be …
Published in International Journal of Metallurgy and Alloys · Vol. 8, Issue 1, 2022 · pp. 1–4 Read article
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Nanocoating and Electrospray Techniques Use to Mitigation Corrosion Sculptures
Abstract: The most sculptures of the world are created by the brass, bronze, iron, silver, gold and metalloid. They come in contact of corrosive pollutants to produce chemical, electrochemical and biochemical reactions and develop various form of corrosion like uniform corrosion, galvanic corrosion, pitting corrosion, stress corrosion and crevice corrosion. The corrosive gases CO2, NO2 and SO2 concentrations increase in atmosphere rapidly after industrialization. The major contributors of these gases are …
Published in International Journal of Metallurgy and Alloys · Vol. 8, Issue 2, 2022 · pp. 1–11 Read article
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Ferromagnetism in II-VI Diluted Magnetic Semiconductor, Zn0.96Mn0.04O Nanostructures by Green’s Theorem
Abstract: Ferromagnetism in II-VI diluted magnetic semiconductor, Zn0.96Mn0.04O is studied. Using the Heisenberg principle, the spin exchange between the neighboring spin is discussed. Heisenberg’s model describes the Hamiltonian of the system in terms of spin density and excitons. Mathematically, magnetic parameters such as magnetizations and magnetic susceptibility are determined by Green’s function. Ferromagnetism is expected from sp-d exchange interactions (RKKY), point defects such as oxygen vacancies, and Zn interstitial and quantum …
Published in International Journal of Metallurgy and Alloys · Vol. 8, Issue 2, 2022 · pp. 28–36 Read article
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An Analytical Study of Structural Optical Properties of CaAl2O4 Phosphors by Sol–Gel Method
Abstract: A comparative study of structure, morphology and optical properties of CaAl2O4 Phosphors by In this paper, monoclinic CaAl2O4 phosphor with various weight rate of aluminum was blended by low temperature sol–gel technique. The readied tests were described by X-beam diffraction (XRD) examination, Fourier change infrared (FTIR), checking electron microscopy (SEM), vitality dispersive spectroscopy (EDS) and photoluminescence discharge spectra (PL). The XRD examination demonstrated that CaAl2O4 have monoclinic structure. The normal …
Published in International journal of Nanobiotechnology · Vol. 2, Issue 1, 2016 · pp. 1–4 Read article