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149 articles for “Crystals and Sizes”
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A Synthesis and Characterization of Copper Oxide Nano Hollow Spheres
Abstract: A simple precipitation and calcination method has been evolved for synthesis of copper oxide (CuO) nano hollow spheres in air ambience. Copper nitrate was used as precursor material in the preparation, and sodium hydroxide was used as precipitating agent. The precipitated particles were subjected to calcinations for oxidation. The obtained CuO nanoparticles were characterised by the following analytical methods of XRD, FTIR, DLS, AFM, SEM and TEM for feature of …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 2, Issue 2, 2012 · pp. 1–11 Read article
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Centrifugal Casting of Nano Crystalline TiB2 Reinforcement Particulate Reinforcement in Al-Alloy Matrix
Abstract: A method of producing Nano size TiB2 particles within an aluminium matrix is the in situ reaction synthesis method, using KBF4 and K2TiF6 potassium based bearing fluxes. The advantages of this in situ reactive process are a small particle size and good particle/matrix interfacial bonding. However, this method is limited to producing low particulate volume percentage material (˂6 vol%). To overcome this limitation, centrifugal casting has been investigated. A series …
Published in Journal of Materials & Metallurgical Engineering · Vol. 3, Issue 3, 2013 · pp. 7–13 Read article
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Non-linear Photonic Crystals and their Applications: A Review
Abstract: The nonlinear photonic crystals (NLPCs) are periodic material structures in which nonlinear materials are used for photonic structure formation. In nonlinear photonic crystals, the optical response mainly depends on the intensity of the light beam that propagates through the photonic crystal. These structures show new optical properties with improved or enhanced or new functionalities that cannot be observed in linear photonic crystals. In addition to this, using nonlinear materials in …
Published in Trends in Opto-electro & Optical Communication · Vol. 12, Issue 2, 2022 · pp. 36–39 Read article
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Mathematical Design and Simulation of MEMS based Acoustic Sensor
Abstract: This paperfocuses on design and simulation of MEMS Acoustic Sensor based on piezoelectriczinc oxide (ZnO) thin film using single crystal silicon wafer. The thickness ofsilicon diaphragm is 35 and the size of diaphragm is 3mm *3mm. Thepaper provides analysis and exhibit enhanced resonance frequency 51.058 KHz.
Published in Recent Trends in Sensor Research & Technology · Vol. 3, Issue 1, 2016 · pp. 10–13 Read article
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Phytosynthesis of silver nanoparticles using Calotropis gigantea flower extract and its antibacterial activity
Abstract: The present study involves the green synthesis of silver nanoparticles (AgNPs) using the extract of white Calotropis gigantea flowers. The AgNPs were characterized by UV-Vis spectroscopy, FESEM, XRD, FTIR analysis. A color change was observed at 384 nm indicating the synthesis of nanoparticles due to surface plasmon resonance. The average nanoparticle size was about 50 nm. XRD analysis showed that the AgNPs were crystalline and face centered in nature. FTIR …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 9, Issue 1, 2019 · pp. 53–60 Read article
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Crystal Engineering Strategies for Tailoring Mechanical Properties of Structural Materials
Abstract: Crystal engineering has emerged as a promising approach for designing materials with tailored mechanical properties, enabling advancements in various fields such as aerospace, automotive, and construction. This review examines the diverse strategies employed in crystal engineering to manipulate the mechanical behavior of structural materials. One key strategy involves controlling the crystal structure at the atomic level through techniques such as alloying, doping, and phase transformations. Alloying introduces foreign atoms into …
Published in International Journal of Crystalline Materials · Vol. 1, Issue 1, 2024 · pp. 01–06 Read article
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Catalytic Reduction of Organic Dyes with Green Synthesized Silver Nanoparticles using Aloe vera Leaf Extract
Abstract: In this present study, we report a facile, cost-effective and non-toxic method of synthesis of silver nanoparticles using 4mM silver nitrate and aqueous leaf extract of Aloe vera as reducing and capping agent in presence of 25% ammonia solution. Then these green synthesized nanoparticles are used as catalysts for the degradation of organic dyes. The synthesized silver nanoparticles (AVSNPs) were characterized using different techniques like UV-Visible spectroscopy, Fourier infrared spectroscopy …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 9, Issue 2, 2019 · pp. 9–21 Read article
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Synthesis, Characterization and Applications of Hair Nanofibres from Waste Human Hair
Abstract: This research communication describes preparation of nano hair fibre from waste human hair. Human hair contains keratin protein in it, which enhances the tensile properties of hair and makes it stronger. Raw fibre of hair was washed with hot water and detergent to make it oil and dirt free and then treated with alkali, to make its surface rough which enhanced the bonding properties of fibre during reinforcement. The chemically …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 23, Issue 1, 2021 · pp. 34–41 Read article
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Synthesis and Characterization of Silver Nanoparticles by using Aqueous Leaf Extract of Tecomella Undulata (SM.) seem. and their Antibacterial Properties
Abstract: Abstract The efficient protocol for bio-synthesis of silver nanoparticles (AgNPs) using Tecomella undulata leaves was developed. The present study revealed that bio-active compounds and secondary metabolites present in the aqueous extract function as stabilizing agent for AgNPs. UV-Visible spectro-analysis and FTIR confirm the presence of bioactive compounds and TEM, EDX and XRD studies confirm the crystalline nature, structure and surface morphology of silver nanoparticles produced from the plant Tecomella undulata. …
Published in Research & Reviews: A Journal of Pharmacognosy · Vol. 7, Issue 2, 2020 · pp. 5–13 Read article
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Fabrication of AA5182-Semis for Precise Components
Abstract: Al4.5MgMn alloy is known to show an excellent physical and mechanical properties as well as manufacturing and fabrication ease as semis, suitable for making precise components like hull of the light weight vehicles and seamless tubes. Present work has tried to describe the development of microstructure and texture of an industrial tandem hot rolled Al4.5MgMn alloy sheet after laboratory cold rolling and annealing. Crystallographic orientation dependent strengthening rate has been …
Published in Journal of Materials & Metallurgical Engineering · Vol. 11, Issue 3, 2021 · pp. 21–32 Read article
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Unlocking the Earth's Secrets: Diamond Drilling Through Diverse Rock Formations
Abstract: Diamond drilling, a core drilling technique employing diamond-encrusted drill bits, has emerged as a critical method for extracting cylindrical rock samples from diverse geological formations. This article provides an extensive overview of diamond drilling, encompassing its equipment, applications, challenges, and its pivotal role in geological exploration, mining, and construction projects. The versatility of diamond drilling is evident in its adaptability to various rock types, spanning the gamut from soft sedimentary …
Published in Journal of Remote Sensing & GIS · Vol. 14, Issue 2, 2023 · pp. 39–41 Read article
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Influence of Al2O3 Nanofiller on Morphological and Discharge Studies of PVP: CH3COOK Films
Abstract: Nanocomposite polymer (NCP) films were prepared by doping potassium acetate with polyvinyl pyrrolidone (PVP) by complete dispersion of aluminum oxide (Al2O3) with different wt% proportions by using solution-casting method. The acquired NCPs films were characterized systematically. The crystalline structure of the prepared NCPs films was confirmed by XRD. The little agglomeration and grain sizes involved in the films were analyzed by SEM. The energy bandgap values were observed to be …
Published in Research & Reviews : Journal of Physics · Vol. 8, Issue 1, 2019 · pp. 20–25 Read article
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A Sol-Gel Approach for the Fabrication of Zinc Oxide Nanoparticles and Their Nanocomposite with Urea Formaldehyde (UF)
Abstract: In the performed work, zinc oxide nanoparticles were synthesized via the sol-gel method using zinc sulphate as the precursor material. Urea-formaldehyde (UF) resin was employed as a polymer matrix to encapsulate the produced ZnO through an acid-catalyzed polymerization process. This encapsulation aimed to improve the dispersion stability and surface reactivity of ZnO within the polymeric medium. The synthesized materials were subjected to comprehensive characterization using Fourier Transform Infrared Spectroscopy (FT-IR), …
Published in International Journal of Crystalline Materials · Vol. 2, Issue 2, 2025 · pp. 21–27 Read article
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Doping of Cerium, Boron and Sulphur with ZnO Nanoparticles and their Impact on Lattice Parameters, Studied through UDM Model
Abstract: Un-doped and tri-doped ZnO nanoparticles were successfully synthesized by the simple sol-gel method. Tri-doped nanoparticles of ZnO were prepared by using Ce, B and S as a dopant in concentrations of 1, 2 and 4 wt% with respect to ZnO. The effect of Ce, B and S on the ZnO nanoparticles was investigated by using X-ray diffraction (XRD), transmission electron microscopy (TEM) and Fourier transform infrared (FTIR) techniques against particles …
Published in Emerging Trends in Chemical Engineering · Vol. 4, Issue 1, 2017 · pp. 21–28 Read article
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Microstructural Design and Functional Properties of Polycrystalline Materials
Abstract: Polycrystalline materials, composed of an aggregate of crystallites or grains, are foundational to modern engineering applications due to their versatile functional properties. The microstructural design—encompassing grain size, shape, orientation, phase distribution, and grain boundary characteristics—plays a pivotal role in determining mechanical, thermal, electrical, and magnetic behavior. This abstract explores the intricate relationship between microstructure and functionality, emphasizing how tailored processing techniques such as thermomechanical treatments, sintering, and additive manufacturing can …
Published in International Journal of Crystalline Materials · Vol. 2, Issue 2, 2025 · pp. 16–20 Read article
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Absorbance, Structural and Morphological Analysis of AgNMs using Leaf Extract of Prosopis Cineraria
Abstract: AbstractThe silver nanomaterials (AgNMs) were synthesized by biodegradable method using the leaf extract of Prosopis cineraria. The green synthesized nanomaterials show the surface plasmonic resonance peak at 441 nm which confirms the presence of AgNMs. The phytochemicals of Prosopis cineraria leaf extract acted as a reducing agent which was corroborated by the infrared spectrum. The electron microscopic analysis substantiates that the AgNMs were spherical in shape with an average size …
Published in Journal of Operating Systems Development & Trends · Vol. 6, Issue 2, 2019 · pp. 21–25 Read article
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Formulation Development and Evaluation of Furosemide Loaded Solid Lipid Microparticles
Abstract: Furosemide is a loop diuretic because of having very low half-life, low oral bioavailability, degraded in gastric juice; it was chosen to formulate as the solid lipid microparticle (SLMs) to overcome above. In this study, an attempt was made to improve the oral bioavailability of furosemide by preparing SLMs using stearic acid (SA) and cetostearyl alcohol (CsA) as lipid polymers by hot homogenization method at different drug: polymer ratios (1:5, …
Published in Research & Reviews: A Journal of Drug Formulation, Development and Production · Vol. 6, Issue 2, 2019 · pp. 6–18 Read article
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AQUASOMES: A Vesicular, Self-assembled Ceramic Nanoparticulate Drug Carrier
Abstract: Nano-biopharmaceutics involves delivery of biopharmaceutical product through different biomaterials like multi-functional nanoparticles, quantum dots, aquasomes, super-paramagnetic iron oxide crystals, and liposomes dendrimers. Aquasomes are considered as one of the most recently developed delivery systems for bioactive molecules like peptides, proteins, hormones, antigens and genes to specific sites. Aquasomes have a spherical shape and a particle size of 60–300 nm. These are three layered self-assembled nano-particulate carrier system. This three-layered structure …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 12, Issue 3, 2025 · pp. 1–14 Read article
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Red emissive MSA capped CdTe quantum dots for cell imaging
Abstract: The changes in the optical and electronic properties of the materials due to the quantum confinement effect in semiconductor nanoparticles have attracted huge interest in the scientific community. Within the semiconductor nanoparticles, the quantum dots (QDs) deserve a special position due to their high quantum confinement effect and unique optoelectronic properties. Among the semiconductor quantum dots, CdTe attracts more attention due to its easy manufacturing, large Bohr exciton radius, and …
Published in Journal of Polymer & Composites · Vol. 13, Issue 1, 2025 · pp. 716–721 Read article
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Effect of Bi2O3 Content and Sintering Temperature on the Frequency-Dependent Magnetic Properties of Nanosized Barium Hexaferrite
Abstract: The magnetic properties of commercially available nanosized barium hexaferrite (BaFe12O19) are studied. The particles were characterized using X-ray diffraction (XRD), vibrating sample magnetometer (VSM), and high-frequency magnetic measurements. The frequency-dependent magnetic properties viz. complex permeability and loss tangent were analyzed within the 10 MHz to 1 GHz range. Variations in complex magnetic permeability and loss tangent were discussed under varying sintering parameters such as temperature and sintering aid content. The …
Published in Journal of Polymer & Composites · Vol. 13, Issue 5, 2025 · pp. 107–113 Read article