Results in Optics最新文献_第8页

Angle-tuned optical interleaver based on Fabry–Perot cavities with reconfigurable angle range 基于可重新配置角度范围的法布里-珀罗空腔的角度调谐光学交织器

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100722

Shadi A. Alboon , Julien Moussa H. Barakat , Abdullah S. Karar

引用次数: 0

Exploration of skewness parameter of Skew-Cosh-Gaussian laser beam propagating through collisionless plasma 探索在无碰撞等离子体中传播的 Skew-Cosh-Gaussian 激光束的偏斜参数

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100724

K.Y. Khandale , S.D. Patil , M.V. Takale

{"title":"Exploration of skewness parameter of Skew-Cosh-Gaussian laser beam propagating through collisionless plasma","authors":"K.Y. Khandale , S.D. Patil , M.V. Takale","doi":"10.1016/j.rio.2024.100724","DOIUrl":"https://doi.org/10.1016/j.rio.2024.100724","url":null,"abstract":"<div>The skewness parameter ‘s’ of a skew-cosh-Gaussian (skew-chG) laser beam travelling through collisionless plasma was analytically investigated in the current theoretically study. In this problem, the self-focusing and defocusing of a skew-chG beam in collisionless plasma has been studied successfully by utilising the Akhmanov’s parabolic equation technique under Wentzel-Kramers-Brillouin (WKB) and paraxial approximations. The dielectric function of plasma under consideration here exhibits ponderomotive type nonlinearity. Our primary goal is to understand how the skewness parameter affects the beam-width parameter changes during plasma propagation. It is observed that the skewness parameter ‘s’ is more noticeable at a higher order of skewness ‘n’ of the skew-chG laser beams. With increasing skewness parameter the critical curves shifts downward and the enhanced self-focusing is observed and the rate of defocusing is decreases. It has been found that improved self-focusing in plasma depends on optimising the skewness parameter ‘s’ of the skew-chG laser beam. The results are revealed graphically and discussed.</div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":"16 ","pages":"Article 100724"},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666950124001214/pdfft?md5=cf5e184756cd016553b5ac92e9e65d40&pid=1-s2.0-S2666950124001214-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141540782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Single-Mode versus Multimode Fiber Bragg Grating Temperature Sensors: A Theoretical Study 单模与多模光纤布拉格光栅温度传感器：理论研究

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100739

Paul Stone Macheso , Mohssin Zekriti

引用次数: 0

Investigation of impact of kesterites as hole transport layer on (FA)2BiCuI6 based ecofriendly double perovskite solar cell to obtain optimized PCE above 25% 研究晶硅作为空穴传输层对基于 (FA)2BiCuI6 的生态友好型双过氧化物太阳能电池的影响，以获得高于 25% 的优化 PCE

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100731

Nishi Bala , Sanjeev Kumar Mallik

{"title":"Investigation of impact of kesterites as hole transport layer on (FA)2BiCuI6 based ecofriendly double perovskite solar cell to obtain optimized PCE above 25%","authors":"Nishi Bala , Sanjeev Kumar Mallik","doi":"10.1016/j.rio.2024.100731","DOIUrl":"10.1016/j.rio.2024.100731","url":null,"abstract":"<div>This paper presents a detailed study of double perovskite (FA)2BiCuI6 based perovskite solar cells(PSC) using different kesterites as hole transport layers (HTL) and titanium-based electron transport layers (ETL). The designed double perovskite PSC utilized <math><msub><mrow><mi>T</mi><mi>i</mi><mi>O</mi></mrow><mn>2</mn></msub></math> as an ETL, different kesterite materials (CZTSe, CFTS, CBTS, CMTS, CNTS and CZTS) as the HTL, double perovskite material (FA)2BiCuI6 as the perovskite absorption layer (PAL), Indium tin oxide (ITO) as top electrode and Au as an anode. The different parameters of architecture (ITO/TiO2/(FA)2BiCuI6/HTL/Au) is improved via the SCAPS-1D simulator by first optimizing thickness and then the defect density of PAL. Energy band matching of the different layers with (FA)2BiCuI6 is thoroughly investigated in order to understand its operation. AM 1.5G illumination is used as input light source. To obtain optimum performance of (FA)2BiCuI6 based PSC the effects of optical thickness, defect density, temperature, series resistance, and shunt resistance are monitored. Among all the kesterites, CNTS based PSC performed extraordinarily well with PCE of 26.09 %. JSC 22.64 mA/cm2, VOC 1.38 V, FF 83.33 %, and the variables influencing solar cell performance are clarified by simulations. The findings presented in this work will aid researchers in the production of ecofriendly solar cells with great efficiency.</div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":"16 ","pages":"Article 100731"},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666950124001287/pdfft?md5=f4dc6447711460bf7be8d0f58e776602&pid=1-s2.0-S2666950124001287-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141842479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Aging characterization of thermally aged transformer paper based on its reflectance 根据热老化变压器纸的反射率确定其老化特征

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100716

Najmeh Seifaddini , Issouf Fofana , N.V.P.S. Rajesh Kandala , Kok-Sing Lim , Cheong-Weng Ooi , Waldo Udos , Bekibenan Sekongo , Abdellah Chehri , Mohand Ouhrouche , Gautam Leena

{"title":"Aging characterization of thermally aged transformer paper based on its reflectance","authors":"Najmeh Seifaddini , Issouf Fofana , N.V.P.S. Rajesh Kandala , Kok-Sing Lim , Cheong-Weng Ooi , Waldo Udos , Bekibenan Sekongo , Abdellah Chehri , Mohand Ouhrouche , Gautam Leena","doi":"10.1016/j.rio.2024.100716","DOIUrl":"https://doi.org/10.1016/j.rio.2024.100716","url":null,"abstract":"<div>In this contribution, a simple non-destructive characterization of aging degree of oil-paper insulation materials based on the reflectance is proposed. Samples of cellulose Kraft paper having different thicknesses, were thermally aged in a mineral insulating oil and a synthetic ester with a controlled aging history. The degree of polymerization of the non-aged and aged paper samples was measured according to ASTM D4243 to monitor the cellulose degradation. In addition, the samples were optically analyzed to assess changes in paper’s reflectance. The reflectance spectra of the thermally aged paper samples were statistically analyzed using linear, single variable, and multi-variable analyses by considering eight popular variables. This enables correlating the reflectance to the degree of polymerization and identifying a suitable regression model. Appropriate variable interaction has been performed among which two best-fit models with goodness of fit ≥ 0.9 have been identified. The estimation of the cellulose paper’s DP using the proposed models is reported. The experimental results show that the proposed approach can be used in characterizing aging degree of oil-paper insulation and has the potential to be implemented online as an effective monitoring technique.</div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":"16 ","pages":"Article 100716"},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666950124001135/pdfft?md5=57103f426354938d8b94c807a0f6ca46&pid=1-s2.0-S2666950124001135-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141540781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optical band gap engineering and comparison of conductivity of CaTiO3 and LiNbO3 doped PVDF films 掺杂 CaTiO3 和 LiNbO3 的 PVDF 薄膜的光带隙工程和导电性比较

Results in Optics Pub Date : 2024-06-22 DOI: 10.1016/j.rio.2024.100720

Clyde Varner , Angela Davis , Ashok K. Batra, Padmaja Guggilla

引用次数: 0

Use of educational technologies in teaching the basics of nanophysics, nanomaterials and nanotechnologies 利用教育技术教授纳米物理学、纳米材料和纳米技术基础知识

Results in Optics Pub Date : 2024-06-21 DOI: 10.1016/j.rio.2024.100717

Dilfuza Begmatova , Husan Eshkuvatov , Nuraddin Abdullayev , Nasiba Xodjayeva , Oqila Suvonova , Javlon Ishtayev

引用次数: 0

Switchable THz wave absorber based on disks and its complement graphene surfaces 基于磁盘及其互补石墨烯表面的可切换太赫兹波吸收器

Results in Optics Pub Date : 2024-06-18 DOI: 10.1016/j.rio.2024.100719

Behnaz Rashidi , Ali Soldoozy , Amir Ali Mohammad Khani , Ilghar Rezaei , Sadegh Biabanifard , Toktam Aghaee

引用次数: 0

Discrete SUPPOSe: A new, faster and accurate superresolution method for applications to fluorescence microscopy images 离散 SUPPOSe：应用于荧光显微镜图像的更快、更准确的超分辨率新方法

Results in Optics Pub Date : 2024-06-12 DOI: 10.1016/j.rio.2024.100715

Sandra Martínez , Oscar E. Martínez

{"title":"Discrete SUPPOSe: A new, faster and accurate superresolution method for applications to fluorescence microscopy images","authors":"Sandra Martínez , Oscar E. Martínez","doi":"10.1016/j.rio.2024.100715","DOIUrl":"10.1016/j.rio.2024.100715","url":null,"abstract":"<div>In this article we define Discrete SUPPOSe, a new and faster version of the single shot super resolution SUPPOSe (Superposition of virtual point sources) method. The SUPPOSe method for super-resolution of fluorescent microscope images relies in assuming that the sample source distribution can be modeled as a superposition of virtual point sources of equal intensities distributed in a continuous space, converting the ill posed deconvolution problem into a well posed one. In this work we present a faster new method that consists on discretizing the continuum problem, using a normalized covariance instead of a <math><msup><mrow><mi>χ</mi></mrow><mrow><mn>2</mn></mrow></msup></math> for the fitting function and hence transforming the convolution (the main computational time) into a multiplication, and modifying the mutation step of the genetic algorithm. We compare precision, accuracy, resolution and computation time. It is also shown that despite the spatial discretization in Discrete SUPPOSe similar figures for precision, accuracy and resolution are obtained. The algorithm was implemented in Matlab running on a CPU obtaining with a speed improvement factor of more than 15 for one image of 48 × 48 pixels. Processing images in parallel in a 16 cores CPU a 1Mpixel image is computed 240 times faster than the standard SUPPOSe in a 2600 core GPU. Experimental images were used to validate the method.</div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":"16 ","pages":"Article 100715"},"PeriodicalIF":0.0,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666950124001123/pdfft?md5=da27dde52c5a75c094c1701c0873fd99&pid=1-s2.0-S2666950124001123-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141413044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Low-cost visible spectrophotometer for detecting absorption and emission in metallic blends of colorful samples solution 用于检测金属混合多彩样品溶液吸收和发射的低成本可见分光光度计

Results in Optics Pub Date : 2024-06-06 DOI: 10.1016/j.rio.2024.100703

Sewmehon Mengistie Workneh , Gashaw Alemu Dagnaw , Addis Mekonnen Adamu , Getasew Admasu Wubetu

{"title":"Low-cost visible spectrophotometer for detecting absorption and emission in metallic blends of colorful samples solution","authors":"Sewmehon Mengistie Workneh , Gashaw Alemu Dagnaw , Addis Mekonnen Adamu , Getasew Admasu Wubetu","doi":"10.1016/j.rio.2024.100703","DOIUrl":"https://doi.org/10.1016/j.rio.2024.100703","url":null,"abstract":"<div>The innovative, affordable assembled visible spectrophotometer employed in this study aims to analyze the absorption and emission of colorful metallic blends of colorful samples solution. It features a tungsten white light bulb source, an ammeter as a detection element, a digital voltmeter, a diffraction grating for light dispersion, a converging lens for light collimation, and filters of various wavelengths (blue, red, yellow, and yellow-green). The light bulb source was powered by a standard supply set at 6 V. Using metallic solutions of chromium chloride (CrCl3) and copper sulphate (CuSO4) with different filter wavelengths, the performance was assessed. The transmittance and absorbance of these metallic solution samples exhibit a linear relationship with approximately 3 % deviation compared to results from a commercial UV–VIS spectrophotometer (DR-6000). Similar investigations were conducted with equivalent quantities of CuSO4, CrCl3, and nickel chloride (NiCl2) solutions, showing a discrepancy ranging from 2 % to 8 % when compared with the commercial UV–VIS spectrophotometer. Therefore, in low-income countries like Ethiopia, colorful metallic solution samples can be effectively analyzed using the newly designed low-cost spectrophotometer.</div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":"16 ","pages":"Article 100703"},"PeriodicalIF":0.0,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666950124001007/pdfft?md5=5ca9019e5271c1fd93b3fd59bfe10774&pid=1-s2.0-S2666950124001007-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141292151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0