Egyptian Journal of Solids最新文献_第2页

Effect of System Parameters on Phase Error of Focus-Free Digital Fringe Projection Profilometry System 系统参数对无焦数字条纹投影轮廓测量系统相位误差的影响

Egyptian Journal of Solids Pub Date : 2021-10-09 DOI: 10.21608/ejs.2021.96550.1021

Hanem Mohamed Ali, M. Amer, Asmaa Omaraa

{"title":"Effect of System Parameters on Phase Error of Focus-Free Digital Fringe Projection Profilometry System","authors":"Hanem Mohamed Ali, M. Amer, Asmaa Omaraa","doi":"10.21608/ejs.2021.96550.1021","DOIUrl":"https://doi.org/10.21608/ejs.2021.96550.1021","url":null,"abstract":"Digital Fringe projection profilometry (DFPP) is a noncontact, fast, accurate and flexible technique for 3D measurements. Phase calculation is an important step that affects the accuracy of measurements. in phase calculation, the critical source of error is phase error due to nonlinear gamma effect of the system. This paper introduces an experimental investigation of the nonlinear gamma effect of DFPP system as well as the effect of system parameters, such as fringe intensity, fringe period, surface distance from the camera and projector and finally the ambient illumination, on phase error and consequently system measurements. Fringe patterns are generated using Matlab 2018a and projected by digital laser projector. The deformed patterns are captured using colored CCD camera. Phase shifting technique is used to calculate phase map. The system shows a linear response in the intensity range (50-220) and has small phase error without any compensation for nonlinear gamma effect. The phase error of the system slightly increases with increasing fringe period and the surface distance from the camera and projector, while it is nearly constant with ambient illumination changes from dark to median level and shows a bigger change if the ambient is completely illuminated. In the worst conditions the phase error does not accedes 0.0387 rad without any compensation for nonlinear gamma effect, make the system a useful tool for 3D measurements in different working fields.","PeriodicalId":445633,"journal":{"name":"Egyptian Journal of Solids","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125582118","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

Synthesis, structure, and optical properties of nanopowders CdS: xAl (x=0, 1, 5, 10, 15 and 20%) via the sol–gel technique 溶胶-凝胶法制备CdS: xAl (x=0、1、5、10、15和20%)纳米粉体的合成、结构和光学性质

Egyptian Journal of Solids Pub Date : 2021-10-01 DOI: 10.21608/ejs.2021.93198.1019

E. Assim

引用次数: 1

Er3+ ion doped low phonon energy glass as a white light emitter 掺Er3+离子的低声子能玻璃作为白光发射器

Egyptian Journal of Solids Pub Date : 2021-09-04 DOI: 10.21608/ejs.2021.90000.1017

A. Saeed, W. Abu-raia, M. Farag

{"title":"Er3+ ion doped low phonon energy glass as a white light emitter","authors":"A. Saeed, W. Abu-raia, M. Farag","doi":"10.21608/ejs.2021.90000.1017","DOIUrl":"https://doi.org/10.21608/ejs.2021.90000.1017","url":null,"abstract":"White light emitters remain in the need of continual development and research for new materials. In this context, a low phonon energy glass containing Er3+ ions was prepared using the conventional melt/casting technique. The chemical compositions of the synthesized materials were analyzed using X-Ray Fluorescence (XRF) measurements. X-Ray Diffraction (XRD) pattern strongly affirms the non-crystalline essence of the produced materials. The behavior of both density and Fourier Transform Infrared (FTIR) spectroscopy denoted that the Er3+ ions have a modifier role and non-bridging oxygens NBOs were formed inside the studied glass network. The studied glasses have low phonon energy, ranging from 647 to 659 cm-1. The obtained results of the thermal, thermo-mechanical, mechanical, and optical properties were discussed in light of the structural changes brought about by inserting Er3+ ions inside the studied network. The present glasses have high thermal stability, high thermal expansion, and high refractive index. With the increase of Er3+ ion content, the Vickers microhardness VMH decreased from 3.78 GPa to 3.20 GPa. Under near ultraviolet NUV 380 nm excitation wavelength, three emission bands; blue, green, and red are observed. The white light is possible by a suitable combination of these colors. The cool white light emission was confirmed using CIE 1931 chromaticity diagram and correlated color temperature values. According to the obtained results, the studied glasses are nominated as a white light emitter in photonic applications.","PeriodicalId":445633,"journal":{"name":"Egyptian Journal of Solids","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129862130","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: 6

Preparation and structural investigation of Polyethylene glycol (PEG) / nano-ferrite composites 聚乙二醇/纳米铁氧体复合材料的制备及结构研究

Egyptian Journal of Solids Pub Date : 2021-06-01 DOI: 10.21608/ejs.2021.98349.1022

S. Saafan, Enas Elghazzawy, Nagat M. Abo-aita

{"title":"Preparation and structural investigation of Polyethylene glycol (PEG) / nano-ferrite composites","authors":"S. Saafan, Enas Elghazzawy, Nagat M. Abo-aita","doi":"10.21608/ejs.2021.98349.1022","DOIUrl":"https://doi.org/10.21608/ejs.2021.98349.1022","url":null,"abstract":"Polyethylene glycol (PEG)/nano-ferrite composites have been prepared by using CoFe2O4, CuFe2O4, Co0.5Cu0.5Fe2O4 and MgFe2O4 ferrite nano-particles synthesized by citrate precursor method along with PEG with different percentages. Ferrite samples have been characterized by X-ray diffraction (XRD) to confirm the formation of pure spinel ferrite phase and, transmission electron microscopy (TEM) to ensure that the average particle size is within the nano-scale. Thermo-gravimetric analysis (TGA) and differential scanning calorimetry (DSC) thermographs of the ferrite samples have been used to ensure the complete formation of pure ferrites at temperatures above 800 o C. The ferrites and their composites with PEG, have been investigated by FTIR spectroscopy. The main bands of ferrites and PEG have been clearly displayed in agreement with literature. A systematic shift of the bands has been observed upon adding PEG. The magnetic properties have been explored by using the vibrating sample magnetometer (VSM). Where the values of of saturation magnetization (Ms), remnant magnetization (Mr) and coercive field (Hc) for pure ferrite and composite samples vary with the presence of different divalent cations which have different magnetic moment. Whereas, Hc values remain constant as obtained in pure ferrites regardless the ratio of PEG. The obtained values of Hc are comparable with those in literature, which can be used in electromagnetic wave attenuation.","PeriodicalId":445633,"journal":{"name":"Egyptian Journal of Solids","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121844486","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

Mathematical modeling of the heat exchange in a stepped solar still 阶梯式太阳能蒸馏器热交换的数学建模

Egyptian Journal of Solids Pub Date : 2021-06-01 DOI: 10.21608/ejs.2021.69568.1010

Nourhan Badawy

引用次数: 0

Utilization of the Ni0.1Co0.9Fe2O4 Nanocrystals for the Degradation of Crystal Violet 利用Ni0.1Co0.9Fe2O4纳米晶降解结晶紫

Egyptian Journal of Solids Pub Date : 2021-05-30 DOI: 10.21608/EJS.2021.64685.1002

A. Ghoneim

{"title":"Utilization of the Ni0.1Co0.9Fe2O4 Nanocrystals for the Degradation of Crystal Violet","authors":"A. Ghoneim","doi":"10.21608/EJS.2021.64685.1002","DOIUrl":"https://doi.org/10.21608/EJS.2021.64685.1002","url":null,"abstract":"Ultrafine Ni0.1Co0.9Fe2O4 nanocrystals were synthesized by the simple co-precipitation route, and well-accurately characterized by X-ray diffraction (XRD), FT-IR spectra, and high resolution transmission electron microscopy (HTEM) technique. XRD investigation proved the evolution of the single-phase cubic spinel structure for these nanocrystals. The fine crystallite size R average value was 36.265 nm. FT-IR absorption spectra displayed the essential absorption bands that were related to their principle sites and main bonds. All the deduced parameters were affected by the presence of the Ni2+, Co2+, and Fe3+ cations in these nanocrystals. HTEM images showed accumulations for the nanoparticles, where the average particle size value was 42.9 nm and was slightly higher than the crystallite size R. Evaluation of photocatalytic activity for Ni0.1Co0.9Fe2O4 Nano-ferrites was obtained through the degradation of Crystal Violet (CV) dye (1 × 10-5 M) in aqueous solution under visible light irradiation using 100 Watt Tungsten lamp fixed at ~ 10 cm distance. As a result, usage of these new ultrafine Ni0.1Co0.9Fe2O4 nanocrystals gives a new marvellous route for the advancement of cost-effective technologies for quite good waste water recycling models, for raising water quality and for the promotion of fruitful efforts in improving treatment systems.","PeriodicalId":445633,"journal":{"name":"Egyptian Journal of Solids","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131295128","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

‌Inﬂuence of Small Amount of Cu Addition on Microstructure, Deformation Temperature, and the Tensile Behaviour of Sn-9Zn-1.5Ag Lead free Solder Alloy 少量Cu添加对Sn-9Zn-1.5Ag无铅钎料合金组织、变形温度和拉伸性能的影响

Egyptian Journal of Solids Pub Date : 2020-10-01 DOI: 10.21608/ejs.2020.148115

引用次数: 1

Thermal and Mechanical Properties of Oxyfluorophosphate Glass Containing Er3+/Yb3+ 含Er3+/Yb3+氟氧磷玻璃的热力学性能

Egyptian Journal of Solids Pub Date : 2020-10-01 DOI: 10.21608/ejs.2020.148113

引用次数: 1

Optical Properties and Phase Transition Measurements of Oriented Difluorophenylazophenyl Benzoate Liquid Crystal 取向苯甲酸二氟苯并噻吩液晶的光学性质和相变测量

Egyptian Journal of Solids Pub Date : 2018-10-01 DOI: 10.21608/ejs.2018.148256

A. A. Zaki

引用次数: 0

Optical Properties of TeO2 SrO B2O3 V2O5 Glass System TeO2 SrO B2O3 V2O5玻璃体系的光学性质

Egyptian Journal of Solids Pub Date : 2018-10-01 DOI: 10.21608/ejs.2018.148250

引用次数: 0