Results in Optics最新文献_第2页

Design and characterization of an ultra-sensitive photonic crystal fiber-based sensor for precise detection of alcohols in the THz regime 设计并鉴定基于光子晶体光纤的超灵敏传感器，用于在太赫兹范围内精确检测酒精

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100721

Zahra Dashtban , Shahrzad Ramtinfard , Nasim Kakesh , Hamed Saghaei

{"title":"Design and characterization of an ultra-sensitive photonic crystal fiber-based sensor for precise detection of alcohols in the THz regime","authors":"Zahra Dashtban , Shahrzad Ramtinfard , Nasim Kakesh , Hamed Saghaei","doi":"10.1016/j.rio.2024.100721","DOIUrl":"https://doi.org/10.1016/j.rio.2024.100721","url":null,"abstract":"<div><p>In an era where the precise detection of alcohols is increasingly vital across a broad spectrum of industries, from healthcare to petrochemicals, the introduction of an innovative, highly sensitive photonic crystal fiber-based sensor represents a significant advancement. This pioneering research unveils a sensor engineered explicitly for the accurate detection of ethanol, methanol, and propanol, operating within the terahertz (THz) frequency range. Utilizing the exceptional attributes of photonic crystals and incorporating Zeonex as a base material, the sensor achieves unparalleled sensitivity and minimal material loss, thereby establishing new benchmarks for alcohol detection technologies. Its distinctive design, featuring rectangular air holes and an asymmetrical structure, not only enhances birefringence but also amplifies its sensitivity, guaranteeing superior performance that outstrips existing methods. The sensor’s operational advantages include its ability to detect alcohol at extremely low concentrations, its high speed of detection, and its resistance to environmental factors such as temperature and humidity. Beyond simple alcohol detection, the sensor serves as a versatile instrument with the potential for widespread application in sectors that demand dependable and efficient detection mechanisms, highlighting its adaptability and the broad scope of its use. This article not only provides a detailed overview of the sensor’s technical specifications and operational advantages but also places it within the broader landscape of technological innovation, signaling the dawn of a new chapter in substance detection and analysis.</p></div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666950124001184/pdfft?md5=46500859f4a8f58ba591ba283754f535&pid=1-s2.0-S2666950124001184-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141583212","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

Bayer-filtered image compression based on CCSDS-123 standard: A tailored approach for CubeSats 基于 CCSDS-123 标准的贝叶滤波图像压缩：为立方体卫星量身定制的方法

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100729

引用次数: 0

Editorial to the Special Issue “Nanophotonics and optical fibers: New avenues for sensing and active devices” 为特刊 "纳米光子学与光纤：传感与有源设备的新途径 "撰写的社论

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100669

引用次数: 0

Azimuthal Fourier decomposition for loss analysis of hollow-core tube lattice fibers, Part II: Tube thickness variation effects 用于空芯管状晶格光纤损耗分析的方位傅立叶分解法第二部分：管厚度变化效应

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100726

{"title":"Azimuthal Fourier decomposition for loss analysis of hollow-core tube lattice fibers, Part II: Tube thickness variation effects","authors":"","doi":"10.1016/j.rio.2024.100726","DOIUrl":"10.1016/j.rio.2024.100726","url":null,"abstract":"<div><p>The effect on confinement loss of thickness variations along the perimeter of the tubes composing the cladding of inhibited-coupling guiding Tube Lattice hollow-core fibers is investigated by using the Azimuthal Fourier Decomposition technique (developed in Part I) for the description of the cladding modal dynamics and their interaction with the fundamental core mode. The results show that the thickness inhomogeneity affects the confinement loss spectrum through confinement loss increase and frequency red- and blue-shift of the high-loss spectral regions. The magnitudes of the confinement loss increase and the high-loss region frequency shift strongly depend on the spatial distribution of the thickness inhomogeneity. The study provides insight into the loss mechanism of non-ideal tube lattice fibers, it allows to quantify the impact of such kind of structural deformations, identifying the route to make fibers more resilient to such fabrication imperfections, and highlighting once again the importance played in inhibited-coupling fibers by the interaction between core modes and the intricate set of cladding modes.</p></div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666950124001238/pdfft?md5=72d2211cf7186bdc249f762f67096d84&pid=1-s2.0-S2666950124001238-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141849611","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

Diabetic retinopathy detection through generative AI techniques: A review 通过生成式人工智能技术检测糖尿病视网膜病变：综述

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100700

Vipin Bansal , Amit Jain , Navpreet Kaur Walia

{"title":"Diabetic retinopathy detection through generative AI techniques: A review","authors":"Vipin Bansal , Amit Jain , Navpreet Kaur Walia","doi":"10.1016/j.rio.2024.100700","DOIUrl":"10.1016/j.rio.2024.100700","url":null,"abstract":"<div><p>Diabetes, a burgeoning health issue, especially among the youth, stems from poor dietary habits and unhealthy lifestyles. India stands as the second most afflicted country, witnessing a rapid diabetes epidemic. Diabetic Retinopathy (DR), a significant complication, threatens vision loss and blindness. Early detection, alongside lifestyle adjustments, can manage DR effectively. Traditional methods for DR detection are time consuming, costly and require specialized skills. Computer assisted screening systems, leveraging technologies like Fundus images and Optical Coherence Tomography (OCT), streamline DR detection, with Artificial Intelligence (AI) playing a pivotal role. Technological advancements and abundant data fuel significant progress in AI-based DR screening, promising enhanced accuracy and efficiency, even in remote regions. In healthcare, “normal” and “abnormal” statuses characterize patient health. AI applications in healthcare often focus on anomaly detection, leveraging distinct data distributions. Generative architectures, originally designed for content generation, find application across various domains, including healthcare. By adjusting architecture and data pipelines, controlled and specific samples can be generated, offering solutions for anomaly detection.</p><p>This paper reviews fundamental aspects of diabetes and DR, exploring the utilization of generative AI in analyzing retinal data for DR detection. It also discusses recent advancements in Generative AI and their potential to enhance AI solutions in healthcare.</p></div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266695012400097X/pdfft?md5=e29a14978ae4a4f94ae979f6740de3a5&pid=1-s2.0-S266695012400097X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141390835","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

Near-infrared spectroscopy for glucose detection in aqueous solution 用于检测水溶液中葡萄糖的近红外光谱技术

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100738

引用次数: 0

Monocrystalline photovoltaic material based symmetrical and unsymmetrical Triple-Series Parallel-Ladder configuration for harvesting maximum power under partial shading conditions 基于单晶光伏材料的对称和非对称三串并联阶梯配置，可在部分遮光条件下获取最大功率

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100682

引用次数: 0

Detecting white interference fringes in noisy conditions via supervised learning neural networks 通过监督学习神经网络检测噪声条件下的白色干涉条纹

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100725

{"title":"Detecting white interference fringes in noisy conditions via supervised learning neural networks","authors":"","doi":"10.1016/j.rio.2024.100725","DOIUrl":"10.1016/j.rio.2024.100725","url":null,"abstract":"<div><p>White interferograms are signals recorded using the interference of light with positional information obtained using a white interferometer, which is a laser technology that uses light interference for the non-contact measurement of the surface topography of a sample. In long-range measurements, the reflected light weakens with increasing distance. When the peak-to-peak value of interference fringe signals is less than the noise level interference fringes cannot be visually confirmed. We propose a neural network-based supervised learning method to detect white interference fringes in noisy conditions. The interference fringes obtained were transformed into time series signals and stored as images. Some of the data was used to train the neural network. Some data was used to validate the trained neural network. The trained model could distinguish between the presence and absence of white interference fringes in noise-contaminated conditions with a certain probability. Numerical calculations and optical experiments validated the proposed method. This technique can be applied to detect weak reflections and extend the interferometry measurement range.</p></div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666950124001226/pdfft?md5=33e4d06ab31d8122529dfe0c1b0d930a&pid=1-s2.0-S2666950124001226-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141844002","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

Numerical modelling and performance investigation of inorganic Copper-Tin-Sulfide (CTS) based perovskite solar cell with SCAPS-1D 基于 SCAPS-1D 的无机硫化铜锡 (CTS) 包光体太阳能电池的数值建模和性能研究

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100713

Ayesha Siddique , Md. Nurul Islam , Hironmoy Karmaker , A.K.M. Asif Iqbal , Abdullah Al Mazed Khan , Md. Aminul Islam , Barun Kumar Das

{"title":"Numerical modelling and performance investigation of inorganic Copper-Tin-Sulfide (CTS) based perovskite solar cell with SCAPS-1D","authors":"Ayesha Siddique , Md. Nurul Islam , Hironmoy Karmaker , A.K.M. Asif Iqbal , Abdullah Al Mazed Khan , Md. Aminul Islam , Barun Kumar Das","doi":"10.1016/j.rio.2024.100713","DOIUrl":"10.1016/j.rio.2024.100713","url":null,"abstract":"<div><p>Perovskite solar cells (PSCs) are a favorable option for the upcoming generation of photovoltaic systems due to their simplicity and high energy conversion efficiency. The third iteration of thin-film solar cells including copper-tin-sulphide (CTS) is easily accessible on Earth, possesses excellent optoelectrical properties, and does not include any harmful substances, making it environmentally sustainable. Using the solar cell capacitance simulator (SCAPS), this study examines the performance of a PSC based on copper oxide (Cu2O) and zinc selenide (ZnSe). The study investigates the factors that influence the performance of CTS-based SCs, such as absorber layer thickness, absorber defect density, interface defect densities, doping densities, and working temperature on the performance of the PSC. The results show that 30.37 % perovskite cell efficiency (PCE) increased from 20.94 % after optimization with 0.9403 V of open circuit voltage, 37.2682 mA/cm<sup>2</sup> of short circuit current and 86.67 % of fill factor.</p></div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266695012400110X/pdfft?md5=716977d2aced971ad612b355a4ec645b&pid=1-s2.0-S266695012400110X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141403034","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

Structural, morphological, electrochemical and optical properties ZnS quantum dots: Influence of La3+ ions ZnS 量子点的结构、形态、电化学和光学特性：La3+ 离子的影响

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100727

引用次数: 0