Progress in Optics最新文献_第2页

Comparison of Novel Raman Techniques for Fiber Forensics 光纤取证中新型拉曼技术的比较

3区物理与天体物理

Progress in Optics Pub Date : 2023-07-28 DOI: 10.3390/opt4030032

Benjamin R. Anderson, N. Gese, H. Eilers

引用次数: 0

Frequency Response Analysis of FAU, LTA and MFI Zeolites Using UV-Vis and Electrochemical Impedance Spectroscopy 紫外可见光谱和电化学阻抗光谱分析FAU、LTA和MFI沸石的频率响应

3区物理与天体物理

Progress in Optics Pub Date : 2023-07-28 DOI: 10.3390/opt4030033

F. N. Murrieta-Rico, J. Antúnez-García, R. Yocupicio-Gaxiola, Armando Reyes Serrato, V. Petranovskii, M. Xiao, O. Sergiyenko, W. Flores-Fuentes, J. Rodríguez-Quiñonez

{"title":"Frequency Response Analysis of FAU, LTA and MFI Zeolites Using UV-Vis and Electrochemical Impedance Spectroscopy","authors":"F. N. Murrieta-Rico, J. Antúnez-García, R. Yocupicio-Gaxiola, Armando Reyes Serrato, V. Petranovskii, M. Xiao, O. Sergiyenko, W. Flores-Fuentes, J. Rodríguez-Quiñonez","doi":"10.3390/opt4030033","DOIUrl":"https://doi.org/10.3390/opt4030033","url":null,"abstract":"Zeolites are porous materials that have cavities interconnected by channels. These crystalline materials are composed of Si-O tetrahedral structures, and according to the assembly of such tetrahedral structures, specific crystalline structures are obtained. Until now, it has been said that there are more than 245 different zeolitic frameworks, and since each one has a specific distribution of pores and cavities, each kind of zeolite has a specific area-to-volume ratio. As a result of the type of zeolite structure, the zeolite can exhibit specific properties, i.e., electrical or optical. Moreover, the physical properties of zeolites can be modified after the inclusion of another chemical species in their structure or in their voids, which can result in tuning a zeolite for specific applications. In this work, synthetic zeolites of types LTA, FAU and MFI are characterized by a number of methods. In particular, the data from UV-Vis spectroscopy are analyzed, and the effect of crystalline structure on properties such as optical bandgap, refractive index, absorption coefficient, incident photon frequency, and extinction coefficient is studied.","PeriodicalId":54548,"journal":{"name":"Progress in Optics","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79799752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal Effects on Optical Chirality, Mechanics, and Associated Symmetry Properties 热效应对光手性、力学和相关对称性的影响

3区物理与天体物理

Progress in Optics Pub Date : 2023-07-17 DOI: 10.3390/opt4030030

Hyoung-In Lee, Tanvi P. Vaidya, Ram Prakash Dwivedi

引用次数: 0

IOL Power Calculation in an Unusual Long Fellow Eye: A Case Report 异长眼人工晶体度数计算一例

3区物理与天体物理

Progress in Optics Pub Date : 2023-07-03 DOI: 10.3390/opt4030029

Umberto Camellin, F. Franchina, A. Meduri, P. Aragona

{"title":"IOL Power Calculation in an Unusual Long Fellow Eye: A Case Report","authors":"Umberto Camellin, F. Franchina, A. Meduri, P. Aragona","doi":"10.3390/opt4030029","DOIUrl":"https://doi.org/10.3390/opt4030029","url":null,"abstract":"Background: Intra-Ocular Lens (IOL) power calculation in long eyes remains challenging despite the availability of new formulas and biometers. This case report shows that optimization of the A-constant in the first eye can reduce postoperative refractive error in the second eye, even in the case of an IOL with negative power. This report aimed to describe a case in which this method was used to calculate IOL power to reduce postoperative refractive error in a long fellow eye. As far as we know, this is the first paper reporting the use of the optimized constant in the first eye to reduce postoperative error in the second eye in the case of a negative IOL. Case presentation: A highly myopic patient with nuclear cataracts underwent phacoemulsification cataract surgery (PCS) in both eyes. The axial length (AL) was 39.42 mm in the right eye and 37.45 mm in the left eye. All biometric data were obtained via low-coherence reflectometry using an OA-2000 biometer (Tomey, Nagoya, Japan). First, an IOL power calculation using the Barrett II formula and PCS was performed in the shorter eye. To evaluate the postoperative refractive error, the optimized A-constant in the left eye was estimated using the Camellin-Calossi formula. The new A-constant was then used for the right eye IOL power calculation using the same formula. The prediction error (PE) in the left eye was −0.23 D with the Barrett II formula. The optimized A-constant method using the Camellin-Calossi formula in the fellow eye gave −0.28 D of PE. Conclusions: The A-constant optimization for very long eyes, using data from the first operated eye, may be useful to reduce refractive prediction error in the second eye in very long eyes, as well as in the case of IOL power with negative values.","PeriodicalId":54548,"journal":{"name":"Progress in Optics","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87440712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Near-Field Single-Scattering Calculations of Aerosols: Sensitivity Studies 气溶胶的近场单散射计算:敏感性研究

3区物理与天体物理

Progress in Optics Pub Date : 2023-06-14 DOI: 10.3390/opt4020028

N. A. Arreyndip, K. Kandler, Aryasree Sudharaj

{"title":"Near-Field Single-Scattering Calculations of Aerosols: Sensitivity Studies","authors":"N. A. Arreyndip, K. Kandler, Aryasree Sudharaj","doi":"10.3390/opt4020028","DOIUrl":"https://doi.org/10.3390/opt4020028","url":null,"abstract":"We model the effects of the photosensitive parameters of aerosols on their optical properties to provide a solid framework for further experimental and theoretical studies. A spherical dust particle is used to study the effects of the ambient medium, size, surface roughness, wavelength, and imaginary part of the complex refractive index. Five Gaussian random spheres with different aspect ratios are simulated to study the dependence of aerosol light scattering properties on particle shape distribution. To investigate the influence of composition, we model two typical kaolinite-like particles (pure and composite) collected from Southwest Sahara, with 0 and 2% hematite at different mixing states. Using the method of discrete-dipole approximation in DDSCAT, a comparative study is performed with the Mueller matrix elements, scattering, absorption, extinction efficiencies, single scattering albedo, and linear depolarization ratio as indicators. For single, microscopic dust particles, near-field calculations are carried out. The results show that the intensity of backscattering and the scattering efficiency decreases in water compared to dry air. Light in the visible range is more efficient for aerosol scattering experiments. A small number of impurities in the sample will increase its absorbing properties, but, in general, the scattering efficiencies strongly depend on the single-particle mixing state. Smaller particles with a diameter comparable to the wavelength of incident light show higher scattering efficiencies but lower backscattering intensities than larger particles, while surface roughness is shown to strongly alter the polarizability of the particle but has a negligible effect on its single-scattering albedo. Moreover, different shapes have a strong effect on the degree of linear polarization, but, in general, using the spherical over elliptic shape model can underestimate the scattering efficiencies by up to 4%. Finally, variation in the imaginary part of the complex RI can underestimate the single scattering albedo by up to 35.8%.","PeriodicalId":54548,"journal":{"name":"Progress in Optics","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80518247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Higher Order Aberrations and Intraocular Scatter on Optical Quality Based on an Optical Eye Model 基于光学眼模型的高阶像差和眼内散射对光学质量的影响

3区物理与天体物理

Progress in Optics Pub Date : 2023-05-26 DOI: 10.3390/opt4020027

Feng Rao, X. Zhao, Ming Zhang, Yan Wang

引用次数: 0

Tunability of the Optical Properties of Transition-Metal-Based Structural Phase Change Materials 过渡金属基结构相变材料光学性质的可调性

3区物理与天体物理

Progress in Optics Pub Date : 2023-05-24 DOI: 10.3390/opt4020026

Sheheera Irfan, Yasir A. Haleem, M. Irshad, Muhammad Farooq Saleem, M. Arshad, Muhammad Habib

{"title":"Tunability of the Optical Properties of Transition-Metal-Based Structural Phase Change Materials","authors":"Sheheera Irfan, Yasir A. Haleem, M. Irshad, Muhammad Farooq Saleem, M. Arshad, Muhammad Habib","doi":"10.3390/opt4020026","DOIUrl":"https://doi.org/10.3390/opt4020026","url":null,"abstract":"Phase transitions are an intriguing yet poorly understood aspect of transition-metal-based materials; these phase transitions can result in changes to the refractive index, absorption coefficient, and other optical properties of the materials. Transition-metal-based materials exist in a variety of crystalline phases and also have metallic, semi-metallic, and semi-conducting characteristics. In this review, we demonstrate that alloyed W- and Mo-based dichalcogenides enable phase transitions in structures, with phase transition temperatures that are tunable across a wide range using various alloy models and modern DFT-based calculations. We also analyze the tuning the optical bandgap of the metal oxide nanoparticles through doping of the transition metal in a manner that is suitable for optical switching and thermal imaging. After the introduction and a brief illustration of the structures and their exceptional properties, we discuss synthetic methodologies and their application as part of important strategies toward the enhanced performance of transition-metal-based dichalcogenides and oxides. In the end, our conclusion highlights the prospects of 2D materials as phase transition materials due to their advantages in terms of scalability and adaptability.","PeriodicalId":54548,"journal":{"name":"Progress in Optics","volume":"188 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78329979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Disinfection of Transparent Screens by Side-Coupled UVA LED Radiation 侧耦合UVA LED辐射对透明屏幕的消毒

3区物理与天体物理

Progress in Optics Pub Date : 2023-05-15 DOI: 10.3390/opt4020023

Ben Sicks, Anna-Maria Gierke, Florian Sommerfeld, Martin Klein, M. Hessling

{"title":"Disinfection of Transparent Screens by Side-Coupled UVA LED Radiation","authors":"Ben Sicks, Anna-Maria Gierke, Florian Sommerfeld, Martin Klein, M. Hessling","doi":"10.3390/opt4020023","DOIUrl":"https://doi.org/10.3390/opt4020023","url":null,"abstract":"(1) Background: Applications using touch screens are increasingly deployed in medical facilities, as well as in public areas. When touching the display with fingers, potentially pathogenic microorganisms such as methicillin-resistant Staphylococcus aureus (MRSA) can be transmitted. An automated process to decontaminate the device in between users would be highly useful. (2) Methods: Thin glass plates were superficially contaminated with the non-pathogenic Staphylococcus carnosus in a controlled manner. Subsequently, UVA radiation of 400 or 380 nm was laterally coupled into the glass plate, which acted as a light guide. Contact agar plates recorded the change in the staphylococci concentration over time. Additionally, the UVA radiation emitted by the glass plates was measured and the potential risk to humans assessed. (3) Results: Staphylococci concentration decreased as a result of UVA radiation for both wavelengths. At 400 nm, it took about 7.5 h and at 380 nm about 1 h until a reduction of 90% was reached. To meet higher disinfection requirements, disproportionately longer irradiation times were necessary. The potential UVA irradiation of humans in front of the glass pane was about 35 µW/cm2 or less and posed no risk to humans. (4) Conclusions: Side-coupled UVA radiation is in principle capable of safely automatically disinfecting microorganisms on touch screens. However, the required irradiation times are still in the hour range, so that a rapid disinfection within a minute or less is not yet possible with the presented setup. However, higher UVA intensities might reduce the current disinfection durations.","PeriodicalId":54548,"journal":{"name":"Progress in Optics","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82633839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Self-Contained Reference Sensors to Reduce Nuisance Alarm Rate in φ-OTDR-Based Fence Intrusion Detection System 基于φ- otdr的围栏入侵检测系统中自包含参考传感器降低骚扰报警率

3区物理与天体物理

Progress in Optics Pub Date : 2023-05-15 DOI: 10.3390/opt4020024

Hailiang Zhang, Hui Dong, D. Hu, Jun Hong Ng

引用次数: 0

Advanced Raman Spectroscopy Based on Transfer Learning by Using a Convolutional Neural Network for Personalized Colorectal Cancer Diagnosis 基于卷积神经网络迁移学习的先进拉曼光谱在个体化结直肠癌诊断中的应用

3区物理与天体物理

Progress in Optics Pub Date : 2023-04-27 DOI: 10.3390/opt4020022

D. Kalatzis, E. Spyratou, M. Karnachoriti, M. Kouri, S. Orfanoudakis, Nektarios Koufopoulos, A. Pouliakis, N. Danias, I. Seimenis, A. Kontos, E. Efstathopoulos

{"title":"Advanced Raman Spectroscopy Based on Transfer Learning by Using a Convolutional Neural Network for Personalized Colorectal Cancer Diagnosis","authors":"D. Kalatzis, E. Spyratou, M. Karnachoriti, M. Kouri, S. Orfanoudakis, Nektarios Koufopoulos, A. Pouliakis, N. Danias, I. Seimenis, A. Kontos, E. Efstathopoulos","doi":"10.3390/opt4020022","DOIUrl":"https://doi.org/10.3390/opt4020022","url":null,"abstract":"Advanced Raman spectroscopy (RS) systems have gained new interest in the field of medicine as an emerging tool for in vivo tissue discrimination. The coupling of RS with artificial intelligence (AI) algorithms has given a boost to RS to analyze spectral data in real time with high specificity and sensitivity. However, limitations are still encountered due to the large amount of clinical data which are required for the pre-training process of AI algorithms. In this study, human healthy and cancerous colon specimens were surgically resected from different sites of the ascending colon and analyzed by RS. Two transfer learning models, the one-dimensional convolutional neural network (1D-CNN) and the 1D–ResNet transfer learning (1D-ResNet) network, were developed and evaluated using a Raman open database for the pre-training process which consisted of spectra of pathogen bacteria. According to the results, both models achieved high accuracy of 88% for healthy/cancerous tissue discrimination by overcoming the limitation of the collection of a large number of spectra for the pre-training process. This gives a boost to RS as an adjuvant tool for real-time biopsy and surgery guidance.","PeriodicalId":54548,"journal":{"name":"Progress in Optics","volume":"90 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78432363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3