Journal of Applied Sciences and Nanotechnology最新文献_第5页

Statistical Analysis of Mechanical Strength and Dielectric Breakdown of Polyester Nano-Alumina Composites 聚酯纳米氧化铝复合材料机械强度和介电击穿的统计分析

Journal of Applied Sciences and Nanotechnology Pub Date : 2023-02-01 DOI: 10.53293/jasn.2022.4973.1168

A. Al Ani, S. Zaidan

引用次数: 0

Extraction and Purification of Pullulanase from Local Mushrooms 当地蘑菇中普鲁兰酶的提取纯化

Journal of Applied Sciences and Nanotechnology Pub Date : 2023-02-01 DOI: 10.53293/jasn.2022.5123.1177

Dalal S. Bedan

引用次数: 1

Study of the Physicochemical and Microbiological Properties of Mozzarella Cheese Coated with Edible Casings Subsidized with Green Tea 绿茶包衣马苏里拉奶酪理化及微生物特性研究

Journal of Applied Sciences and Nanotechnology Pub Date : 2023-02-01 DOI: 10.53293/jasn.2022.5086.1175

I. Abdulhadi, M. Shakak, K. Doosh

引用次数: 0

Study of the Effects of Solution Types on Concentration of Iron Oxide by Pulsed Laser Ablation in Liquid 脉冲激光烧蚀液体中不同溶液类型对氧化铁浓度影响的研究

Journal of Applied Sciences and Nanotechnology Pub Date : 2023-02-01 DOI: 10.53293/jasn.2022.5025.1172

Rusul Al-Obaidy, Adawiya Hadier, S. Al-Musawi, N. Arsad

引用次数: 2

Room Temperature 2-Fold Morphology Porous Silicon Impedance Matching Pesticide Sensor 室温2倍形态多孔硅阻抗匹配农药传感器

Journal of Applied Sciences and Nanotechnology Pub Date : 2023-02-01 DOI: 10.53293/jasn.2022.4841.1153

Rasha Rashid, A. Alwan, Mohammed Mohammed

引用次数: 2

Role of Microalgae in Environmental Biotechnology to Remove Heavy Metals 微藻在环境生物技术中去除重金属的作用

Journal of Applied Sciences and Nanotechnology Pub Date : 2023-02-01 DOI: 10.53293/jasn.2022.5346.1183

M. Qader, Yahya A. Shekha

引用次数: 1

Study of the Properties of YBCO Superconductor Compound in Various Preparation Methods: A Short Review 不同制备方法对YBCO超导体化合物性能的研究综述

Journal of Applied Sciences and Nanotechnology Pub Date : 2023-02-01 DOI: 10.53293/jasn.2022.4867.1156

Amir Abdul Hussein, A. A. Abdul Hussein, N. Hasan

{"title":"Study of the Properties of YBCO Superconductor Compound in Various Preparation Methods: A Short Review","authors":"Amir Abdul Hussein, A. A. Abdul Hussein, N. Hasan","doi":"10.53293/jasn.2022.4867.1156","DOIUrl":"https://doi.org/10.53293/jasn.2022.4867.1156","url":null,"abstract":"Superconductors have entered into many applications and advanced technological fields, due to their excellent properties identified by zero resistance and expelling the magnetic field applied to them. Superconductivity is a viable technology to prevent energy losses contributed by electrical resistivity. Also, the magnetic flux is repelled entirely out of the body of superconducting material which makes the Meissner Effect. High-Temperature Superconductors (HTS) have become the focus of researchers and scientists. This is because it uses liquid nitrogen \"LN\" in cooling, which gives it significant critical temperatures compared to traditional materials based on liquid helium \"LHe\" in cooling. From this point of view, began to employ these materials in most disciplines and modern technologies. In this article, the phenomenon of Superconductivity will define with explain its most prominent characteristics and focus on the preparation of the HTS (Yttrium-Barium-Copper-Oxide) compound (Abbreviated as YBCO) in different methods \"The Sol-Gel and Citrate Pyrolysis Methods\", to creating ultrafine superconducting (Y-123) powders. Generally known that by adopting any preparation technique, the superconducting transition temperature (Tc) value of ≈ 92 K could be achieved in the bulk samples. The Citrate Pyrolysis method is a unique route to prepare reactive precursor mixtures through an ignition process of a concentrated aqueous solution including metallic ions of stoichiometric composition. This procedure enables to synthesize of highly homogeneous and fine powders for functional materials, in comparison to the Sol-gel technique.","PeriodicalId":15241,"journal":{"name":"Journal of Applied Sciences and Nanotechnology","volume":"63 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89636915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Fabrication of Porous Silicon as a Gas Sensor: The Role of Porous Silicon Surface Morphology 多孔硅气体传感器的制备:多孔硅表面形貌的作用

Journal of Applied Sciences and Nanotechnology Pub Date : 2022-11-01 DOI: 10.53293/jasn.2022.4661.1134

A. Abdullah, A. Haider, Allaa Jabbaar

{"title":"Fabrication of Porous Silicon as a Gas Sensor: The Role of Porous Silicon Surface Morphology","authors":"A. Abdullah, A. Haider, Allaa Jabbaar","doi":"10.53293/jasn.2022.4661.1134","DOIUrl":"https://doi.org/10.53293/jasn.2022.4661.1134","url":null,"abstract":"Manufacture of an environmental polluting gas sensor with improved properties by controlling the preparation conditions of the photoelectrochemical etching technique (PECE). The amount of porosity, the diameter of the pores, and the thickness of the prepared layer of porous silicon (Psi) can be controlled by changing one or all of these conditions. In this paper, n-type Si with a crystalline orientation (100) was used, whereby PSi was prepared with the use of a red diode laser with a wavelength of 650 nm, using different radiation intensity, and with the constancy of etching time and current density. Through the results obtained, it was noted that: the porosity increases significantly up to 75% as well as the thickness of the PSi layer up to 1.45 µm with the increase in the intensity of the laser beam. Also, examining the morphology of the surface samples by field emission scanning electron microscope (FE-SEM) besides, the average pore diameters of the prepared samples were calculated. It is clear that the intensity of the laser beam used in the irradiation process is one of the important factors in determining the properties of the prepared PSi. PSi samples have been tested by FTIR to investigate chemical bonds on surfaces such as, (Si-Si, Si- H , Si- H 2 , Si-O-Si, Si-O-Si, Si-H, Si-O-Si). Samples tested as gas sensors and noticed that an increase in the sensing current to 5.3 µA has appeared with the","PeriodicalId":15241,"journal":{"name":"Journal of Applied Sciences and Nanotechnology","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85776779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Effect of Precursor Concentration on the Structural, Optical, and Electrical Properties of WO3 Thin Films Prepared by Spray Pyrolysis 前驱体浓度对喷雾热解制备WO3薄膜结构、光学和电学性能的影响

Journal of Applied Sciences and Nanotechnology Pub Date : 2022-11-01 DOI: 10.53293/jasn.2022.4715.1139

Farhan Mohammed, E. Salim, A. Hassan, M. Wahid

{"title":"Effect of Precursor Concentration on the Structural, Optical, and Electrical Properties of WO3 Thin Films Prepared by Spray Pyrolysis","authors":"Farhan Mohammed, E. Salim, A. Hassan, M. Wahid","doi":"10.53293/jasn.2022.4715.1139","DOIUrl":"https://doi.org/10.53293/jasn.2022.4715.1139","url":null,"abstract":"Using a chemical spray technique, an n-type WO 3 polycrystalline thin film was prepared with optimizing parameters (molarity concentration of 80 mM and a substrate temperature of 350 °C). Study the physical properties of WO 3 thin film via UV-Visible spectroscopy, XRD, Field Emission-Scanning Electron Microscope, Energy Dispersive X-ray Spectroscopy, Atomic Force Microscopy, and current-voltage. Tungsten oxide was deposited on glass surfaces at different molarities ranging from 50–90mM. In the UV-Visible spectrum of the WO 3 thin film, it was found that the transmittance, reflectivity, and energy gap decreased (78%–53%), (9.63%–5.02%), and (3.40eV–2.63 eV), respectively. The X-ray diffraction of the WO 3 film at the optimized was poly-crystalline and had a monoclinic phase, and the preferred orientation (hkl) was 200 at 2 = 24.19. From the image FESEM and EDX, it was found that it has a multi-fibrous network. The average diameter of the fiber is 266 nm, and the ratio of tungsten to oxygen (W/O) is 2.6, with a stoichiometric of 68.6% at the 80 mM concentration. The Atomic Force Microscopy shows that the WO 3 thin layer has a nanostructure. The average surface roughness was 5.3 nm, and the Root Mean Square was 8.6 nm. The WO 3 film had the lowest resistivity value of 2.393 × 108  cm, and the activation energy was 0.298 eV, among the parameter of the current voltage at substrate temperature and concentration optimum.","PeriodicalId":15241,"journal":{"name":"Journal of Applied Sciences and Nanotechnology","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79067806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

2D Particle-in-Cell/Monte Carlo Collision Simulation of Zn-C Mosaic Target Erosion Zn-C镶嵌靶冲蚀的二维粒子池/蒙特卡罗碰撞模拟

Journal of Applied Sciences and Nanotechnology Pub Date : 2022-11-01 DOI: 10.53293/jasn.2022.5395.1185

A. Addie, R. Ismail, M. Mohammed

{"title":"2D Particle-in-Cell/Monte Carlo Collision Simulation of Zn-C Mosaic Target Erosion","authors":"A. Addie, R. Ismail, M. Mohammed","doi":"10.53293/jasn.2022.5395.1185","DOIUrl":"https://doi.org/10.53293/jasn.2022.5395.1185","url":null,"abstract":"In this work, a simulation analysis of a commercial magnetron sputtering source was performed using the finite element method Particle-in-Cell/Monte Carlo Collision (PIC/MCC) to optimize the configuration of the Zn-C mosaic target. The magnetic field distribution was solved in a two-dimensional cylindrical coordinate system, and particles such as electrons, atoms, and charged ions of argon, zinc, and carbon were tracked in a DC magnetron sputtering system. The sputtering yield profile and particle flux for the eroded target were studied considering the ion and electron density distributions. The maximum sputtering flux of zinc and carbon was 1.975  10 21 m -2 .s -1 and 3.7  10 18 m -2 .s -1 respectively. The erosion position of a target was predicted based on the maximum power density distribution at the surface of the target. The accuracy of the simulation was checked by comparing it with the measurement of the target eroded after several hours of sputtering. However, as for the Zn-C mosaic target, the racetrack was identical to the analysis predicted by the numerical simulation process. The results of this work can be used as a guide for designing mosaic targets and optimizing their use for fabricating nanohybrid thin film structures.","PeriodicalId":15241,"journal":{"name":"Journal of Applied Sciences and Nanotechnology","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82691636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0