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524 articles for “crystallization”
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Recent Advances in Crystal Defect Engineering of Semiconductor Photocatalysts for Sustainable Environmental and Energy Applications
Abstract: Semiconductor photocatalysis has emerged as one of the most promising green technologies for addressing environmental pollution and global energy challenges through solar energy utilization. Nevertheless, the practical application of conventional semiconductor photocatalysts is often limited by their narrow visible-light absorption, rapid recombination of photogenerated electron–hole pairs, insufficient active sites, and poor charge-transfer efficiency. Defect engineering has recently attracted significant attention as an effective strategy to overcome these limitations by deliberately …
Published in International Journal of Photochemistry and Photochemical Research · Vol. 4, Issue 2, 2026 Read article
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Determination of Crystalline Planes and Directions in Cubic System
Abstract: AbstractA new method to draw the planes in cubic crystal system has been introduced. According to this method, it is very convenient to draw the planes along negative directions. The origin for the plane along all the directions can be identified easily by referring the standard table given in the text. After referring various technical papers, journals and textbooks it is noticed that there is no definite method and proper …
Published in Research & Reviews : Journal of Physics · Vol. 5, Issue 2, 2016 · pp. 31–35 Read article
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Electrical Properties of Znx Mg (1-x)TS Single Crystals
Abstract: Non-linear optics plays an important role in emerging photonic and optoelectronic technologies. In the present study semi-organic mixed crystals of Znx Mg (1-x) TS for various values of x viz. 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9 and 1 by slow evaporation technique. The grown crystals were characterized by EDS, XRD and Electrical measurements like capacitance measurement and loss factor using ALIGANT LCR meter for various values …
Published in Research & Reviews : Journal of Physics · Vol. 8, Issue 2, 2019 · pp. 83–88 Read article
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Influence of Crystallization Time by Hydrothermal Synthesis of Ag NPs-Zeolite Composite
Abstract: The nanocomposites Ag NPs-zeolite involve zeolite loaded with silver nanoparticles and have been prepared by an easy one-pot hydrothermal autoclave method. Three samples of silver-bearing zeolite were prepared for 8 hours, 6 hours, and 4 hours, respectively, inside an autoclave at 100°C. A range of characterization procedures were used to examine the samples, such as x-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), UV-visible spectroscopy, and zeta potential. Results …
Published in Journal of Polymer & Composites · Vol. 11, Issue 2, 2023 · pp. 80–90 Read article
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On Tuning Mechanisms In Existing Recent Patents on Tunable Photonic Crystals
Abstract: AbstractThis manuscript studies the photonic band gap tuning mechanisms in recent patents on tunable photonic crystals and suggest ideas to enhance the tuning control capability of photonic band gaps in these patents.Keywords: Photonic crystals, external stimulus, tunable spectraCite this Article:Anirudh Banerjee. On Tuning Mechanisms In Existing Recent Patents on Tunable Photonic Crystals. Trends in Opto-electro & Optical Communication. 2015; 5(1): 19–21p.
Published in Trends in Opto-electro & Optical Communication · Vol. 5, Issue 1, 2015 · pp. 19–21 Read article
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Advanced x-Ray Analysis for Less-Crystalline Materials
Abstract: An effort to manufacture materials with the least and precise radar signature for stealth and controlled guidance respectively, inevitably requires advanced techniques to characterize materials, for detecting the confinement of crystallinity in still smaller volumes, to estimate entity sizes, unwanted noise and structure factors. Raison d’etre for selection of advanced and special materials with less crystallinity, combined with control over precise weathering, to minimize crystal development, for acquiring stealth and …
Published in Journal of Aerospace Engineering & Technology · Vol. 12, Issue 1, 2022 · pp. 8–12 Read article
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Dielectric Constant/Dielectric Loss Measurements in Vectra-A, Liquid Crystal Copolyester
Abstract: The most significant advantage of studying the charge storage mechanism of Vectra-A, Liquid Crystal Copolyester through Dielectric Spectroscopy (DS) is their complex structure, which can be physically or chemically tailored for specific applications which make it suitable for charge storing devices like Micro-Electro-Mechanical Systems (MEMS). The variation of dielectric constant (ε') and dielectric loss (ε'') in the temperature interval (25 oC to 250 oC) for pristine samples of Vectra-A at …
Published in Research & Reviews : Journal of Physics · Vol. 7, Issue 2, 2018 · pp. 84–87 Read article
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The Effect of Rare Earth (RE) Metal Doping of Zno, On Magnetic and Optical Properties of Zno Crystals Structure
Abstract: The magnetic and optical properties of magnetic semiconductors relays on the crystal structure, type and amount of dopant ions, and particle size. Then, the effect of rare earth metal (Dy, Eu, and La) doping on crystal structures, magnetic properties and optical properties are seen. It is revealed that the optical band gap of ZnO decrease down from 3.37eV up on doping with RE metals. Then, the Hamiltonian of the system …
Published in International Journal of Crystalline Materials · Vol. 2, Issue 2, 2025 · pp. 28–40 Read article
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Performance of Combined PV-Inverter System: Use of Amorphous and Crystalline Panels
Abstract: This paper is aimed at analyzing the performance of a combined PV-inverter system connected to an external load using either amorphous or crystalline photovoltaic modules. The analysis is based on previous theoretical analysis that uses the efficiency of the PV panel and of the DC/AC inverter as a key parameter. Different configurations using the same energy resource have been simulated to determine the efficiency of the PV panel, DC/AC inverter, …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 11, Issue 1, 2021 · pp. 6–21 Read article
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Improved Low Confinement Photonic Crystal Fiber with Ultra Flattened Dispersion
Abstract: AbstractIn this study, to obtain lower value of dispersion with flatness for wideband, more complicated design will be proposed with multiple-hole diameter and shapes. Confinement loss is also reduced by increasing the number of rings. We optimized cladding region in which there are holes of different diameter and shapes. Numerical investigation shows that value of confinement loss is very low -0.00116 dB/Km and ultra-flat dispersion over wideband at operating frequency …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 2, 2018 · pp. 1–5 Read article
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An Optimized Configuration of Photonic Crystal Fiber (PCF) for High Birefrigent and Low Loss Application using FDTD Method
Abstract: AbstractTwo simplified structures are theoretically designed for high birefringence and low loss guiding photonic crystal fiber at operating wavelength 1.55 µm. The effective index, birefringence and confinement loss are obtained using finite difference time domain method. Simulation result shows that the maximum modal birefringence is equal to 86.33x10-5 for one configuration and lowest confinement loss in another configuration is nearly equal to 0.70x10-2 dB/Km at same operating wavelength.Keyword: birefringence, FDTD …
Published in Trends in Opto-electro & Optical Communication · Vol. 3, Issue 3, 2013 · pp. 1–8 Read article
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Effect of Doping and Crystal Orientation on Channel Current for Multigate Si Nanowire FET
Abstract: This manuscript investigates the effects on channel current by varying gate orientation as well as channel doping concentration for Si nanowire FET. Both gate and drain voltage biasing are considered here for showing variations in channel current. After analyzing simulation results for silicon 100 and 110 crystal orientation it has been found that gate all around and top gate only show significant increment in channel current on different occasions over …
Published in Journal of VLSI Design Tools and Technology · Vol. 7, Issue 2, 2017 · pp. 20–29 Read article
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Impact of Shape, Size and Crystal Structure on Vacancy Related Properties of Gold Nanoparticles
Abstract: It is necessary to consider defects to explain the electron movement, thermal transport and mechanical properties of materials. In the present study, a simple quantitative model for cohesive energy of nanoparticles is extended to determine the size, shape and crystal structure effect on vacancy formation energy, vacancy entropy, and vibrational frequency in free surface Au nanoparticles. Vacancy entropy variation with size has been studied for spherical, regular octahedral, regular hexahedral …
Published in Journal of Polymer & Composites · Vol. 13, Issue 1, 2025 · pp. 223–229 Read article
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Fabrication and Analysis of PBAT/Cyperus Rotundus Micro Crystalline Cellulose Biofilms for Food Packaging Applications
Abstract: Global plastic waste crisis has gained an increasing attention and many efforts have been made recently to develop biodegradable polymers as food packaging alternatives. Solution casting is used for fabrication and characterization of reinforced polybutylene adipate-co-terephthalate (PBAT) biofilm with Cyperus rotundus microcrystalline cellulose (CRC). PBAT-CRC biofilms with different CRC loadings (1%, and 2%) had been prepared and their structural, mechanical, thermal and morphological properties of fabricated biofilms were analyzed to …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 591–599 Read article
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Experimental Setup for the Measurement of Low Temperature Seebeck Coefficient of Single Crystal and Bulk Materials
Abstract: A differential thermopower setup is fabricated for both the single crystal and bulk materials in the temperature range of 16–320 K. One advantage of this apparatus is that the sample separation can be changed according to the requirement between 2 and 5 mm. In this setup silver paint is used for the improvement of thermal and electrical conductivity between copper (thermocouple) leads and material. Seebeck coefficients are measured using a …
Published in Journal of Control & Instrumentation · Vol. 5, Issue 2, 2014 · pp. 25–30 Read article
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Synthesis and Characterization of TiO2 1% SiO2 of Crystal and its Bacterial Applications
Abstract: Three-dimensional (3D) TiO2 Anatase and Rutile structures have attracted much attention due to their optical properties. However, the large band gap of (3.2 eV) results in the fact that anatase TiO2 can act as photo catalyst and be excited by UV light, which only accounts for 3–5% of the solar energy. On considering that nobel metallatic nanomaterials can harvest visible light, in this paper, TiO2 and SiO2 nanocrystals with rod …
Published in Research and Reviews: A Journal of Toxicology · Vol. 10, Issue 1, 2020 · pp. 47–58 Read article
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Thermal Analysis (Energy and Exergy) of Crystalline Silicon Solar Photovoltaic Module for Hazy Day
Abstract: Abstract With the growing population, demand for a renewable energy source has reached to peak level. It is necessary to have that source available easily and in sufficient quantity so that with the diminishing non-renewable source, basic need of energy can be fulfilled. This source can be the all-time available source, ‘solar energy’. Concern of most of the countries is just to make the availability of this source better and …
Published in Journal of Thermal Engineering and Applications · Vol. 3, Issue 3, 2016 · pp. 8–19 Read article
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Synthesis, Crystal Structure and Reactivity Study of N-Pyrrolyl-P, P-Diphenylphosphino Sulfide/Selenide Ligand
Abstract: 800x600 We report the synthesis and solid state structures of the N-pyrrolyl-P,P-diphenylphosphino sulfide and selenide of molecular formulae [C4H4NP(S)Ph2] (1) and [C4H4NP(Se)Ph2] (2) respectively. Compounds 1 and 2 were prepared by one pot reaction of pyrrole and [Ph2P(E)Cl] (E = S and Se) in the presence of NaH as base at ambient temperature. In the solid state structure established by single crystal X-ray diffraction analysis, phosphorus atom adopts a distorted …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 5, Issue 3, 2014 · pp. 35–45 Read article
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Crystal structure investigation of La doped BiFeO3 multiferroics by Rietveld analysis
Abstract: AbstractPolycrystalline materials with composition Bi0.8La0.2FeO3 multiferroics were prepared through solid state reaction method. The room temper ature XRD confirmed the very well synthesis of the sample without any trace of any impurity phase. The Rietveld analysis of the XRD pattern manifest the interesting evident of devising the structural phase not exactly Rhombohedral (R3c) but instead it exhibits a combination of 90% rhombohedral(R3c) and 10% α phase of BiFeO3 Triclinic (P1). …
Published in Research & Reviews : Journal of Physics · Vol. 7, Issue 1, 2018 · pp. 34–37 Read article
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Fluorescence Emission Enhancement in Crystalline Photonic Structures
Abstract: One of the two ways that a material that has absorbed light or other electromagnetic radiation can emit light is through fluorescence. Fluorspar is a substance that can be added to welding compounds to facilitate easier flow; the word fluorescent is derived from the Latin fluere, which means "to flow." LED lights, clothing that glows in "black light," or light sources that contain UV or blue light, and butterflies like …
Published in International Journal of Crystalline Materials · Vol. 1, Issue 2, 2024 · pp. 35–48 Read article