Photonics and Nanostructures-Fundamentals and Applications最新文献

Polarization sensitivity engineering in WS2 metasurfaces governed by quasi-bound states in the continuum 连续介质中准束缚态控制的WS2超表面偏振灵敏度工程

IF 2.5 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2025-04-22 DOI: 10.1016/j.photonics.2025.101387

Amir Alfonso Rodriguez Santana, Mohammad Danaeifar

{"title":"Polarization sensitivity engineering in WS2 metasurfaces governed by quasi-bound states in the continuum","authors":"Amir Alfonso Rodriguez Santana, Mohammad Danaeifar","doi":"10.1016/j.photonics.2025.101387","DOIUrl":"10.1016/j.photonics.2025.101387","url":null,"abstract":"<div><div>Bound states in the continuum (BICs) hold significant potential for enhancing light-matter interactions with high quality (Q) factor resonances. Concurrently, tungsten disulfide (WS<sub>2</sub>), a transition metal dichalcogenide (TMDC), provides a pathway to attain the strong-coupling regime, garnering significant interest from researchers. In this study, we engineer polarization sensitivity in metasurfaces constructed from bulk WS<sub>2</sub> slabs, employing two distinct approaches. Firstly, we synthesize a polarization-sensitive metasurface composed of dual slabs with varying dimensions to achieve symmetry-protected BICs. The rotation of the electric field direction of the incident wave leads to a dramatic change in the transmittance response. Conversely, by considering a quad-slab unit cell, we develop a polarization-independent metasurface that exhibits a unique response to any orientation of the electric field of the incident wave. For both types of metasurfaces, we demonstrate the generation and tuning of quasi-BIC resonances by adjusting the degree of asymmetry. Furthermore, we elucidate how to achieve the strong coupling regime characterized by an anticrossing pattern through scaling the in-plane dimensions of the unit cell. In the strong coupling regime, Rabi splitting exhibits two distinct values of 104.2 meV and 116.8 meV for polarization-sensitive and polarization-independent metasurfaces, respectively. The polarization sensitivity engineering presented herein can be applied across various photonic systems, enabling the development of devices that are either highly sensitive or polarization-independent.</div></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"65 ","pages":"Article 101387"},"PeriodicalIF":2.5,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143864406","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

Analysis of refractive index sensor using topological photonic protected edge state in one-dimensional photonic crystal 一维光子晶体中基于拓扑光子保护边缘态的折射率传感器分析

IF 2.5 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2025-04-19 DOI: 10.1016/j.photonics.2025.101388

Anjineya K , Don Mathew , Meghna C.H , Vincent Mathew

引用次数: 0

Machine-learning-assisted design of energy-saving windows with high near-infrared shielding properties 高近红外屏蔽性能节能窗的机器学习辅助设计

IF 2.5 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2025-04-18 DOI: 10.1016/j.photonics.2025.101389

Chengchao Wang , Haojun Zhu , Hengyi Fan , Yinmo Xie , Qingzhi Lai , Lanxin Ma

{"title":"Machine-learning-assisted design of energy-saving windows with high near-infrared shielding properties","authors":"Chengchao Wang , Haojun Zhu , Hengyi Fan , Yinmo Xie , Qingzhi Lai , Lanxin Ma","doi":"10.1016/j.photonics.2025.101389","DOIUrl":"10.1016/j.photonics.2025.101389","url":null,"abstract":"<div><div>Nanocomposite films based on Cesium tungsten oxide (CWO) and Indium tin oxide (ITO) nanoparticles provide a broad space for adjusting the optical properties of energy-saving windows due to their unique near-infrared absorption properties. This property has led to great research interest in the field of energy-saving windows for such materials. The optical properties of energy-saving windows are mainly determined by localized surface plasmon resonance (LSPR) of the nanoparticles, and thus they are sensitive to the variation of the geometrical parameters of the nanoparticles. Typically, the computational cost of the design of specific optical properties and iterative optimization of the geometrical parameters is expensive and time-consuming. In this study, we combine machine learning and radiative transfer calculations to achieve targeted design energy-saving windows. By adjusting the shape, material, and geometric parameters of nanoparticles, an analysis model can be established from the geometric parameters of nanoparticles to the properties of energy-saving windows. Then, a machine learning model of bidirectional deep neural network is developed to achieve accurate prediction of optical evaluation parameters (visible transmittance (<em>T</em><sub>lum</sub>), near-infrared (NIR) transmittance (<em>T</em><sub>NIR</sub>), solar radiation transmittance (<em>T</em><sub>sol</sub>), and the Figure of Merit (<em>FOM</em>)) for energy-saving windows, as well as inverse design of geometric parameters of nanoparticles (CWO and ITO). The results indicate that our machine learning model achieved forward prediction of energy-saving window optical properties with an accuracy of over 99 % and inverse geometric parameter design with an accuracy of over 93 %. Overall, this work provides a broadly appropriate and computationally efficient method for evaluating and designing the properties of energy-saving windows.</div></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"65 ","pages":"Article 101389"},"PeriodicalIF":2.5,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143855482","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

Indole-7-carboxaldehyde functionalized silver and gold nanoparticles as novel metal-organic laser power limiting composites 吲哚-7-甲醛功能化纳米银和纳米金作为新型金属有机激光限功率复合材料

IF 2.5 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2025-04-05 DOI: 10.1016/j.photonics.2025.101386

Shradha Lakhera , Meenakshi Rana , A. Dhanusha , T.C. Sabari Girisun , Shruti Sharma , Papia Chowdhury

{"title":"Indole-7-carboxaldehyde functionalized silver and gold nanoparticles as novel metal-organic laser power limiting composites","authors":"Shradha Lakhera , Meenakshi Rana , A. Dhanusha , T.C. Sabari Girisun , Shruti Sharma , Papia Chowdhury","doi":"10.1016/j.photonics.2025.101386","DOIUrl":"10.1016/j.photonics.2025.101386","url":null,"abstract":"<div><div>Efforts were done to enhance the nonlinear optical and optical power limiting responses of Indole-7-carboxaldehyde (I7C) after the addition of silver and gold nanoparticles. The investigations were done theoretically as well as experimentally. The reactivity parameters and potential surfaces established strong intermolecular charge interactions between metal trimer and I7C. The diffraction pattern for both I7C+AgNPs and I7C+AuNPs indicated the perfect crystallinity of the samples. The band gap of I7C+AgNPs (2.08 eV) was less than that of I7C+AuNPs (2.34 eV). The polarizability of I7C was enhanced after the addition of gold and silver nanoparticles. The value of first-order hyperpolarizability of probe I7C was observed as 4.24 × 10<sup>−30</sup> esu which was increased to ten times for I7C+AgNPs and eighteen times for I7C+AuNPs. The increased value of first-order hyperpolarizability supported enhanced nonlinear optical characteristics of I7C+AgNPs and I7C+AuNPs. Further, the reduction in experimentally obtained optical limiting threshold and increment in the nonlinear absorption coefficient reflects early attenuation of the nonlinear optical and enhanced optical limiting activity of I7C+AgNPs and I7C+AuNPs.</div></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"64 ","pages":"Article 101386"},"PeriodicalIF":2.5,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143834172","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

Direct laser writing of binary data on metal-organic framework surface 金属有机骨架表面二进制数据的激光直接写入

IF 2.5 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2025-04-02 DOI: 10.1016/j.photonics.2025.101385

Varvara Kharitonova , Anastasia Lubimova , Valentin A. Milichko , Semyon V. Bachinin

引用次数: 0

SERS in opal-type stripe patterned structures with metal coating 带有金属涂层的蛋白石型条纹图案结构中的SERS

IF 2.5 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2025-03-31 DOI: 10.1016/j.photonics.2025.101384

Mikhail Astafurov , Elena Perevedentseva , Nikolay Melnik , Mikhail Shevchenko , Sergey Dorofeev , Alexander Ezhov , Daniil Kozlov , Anastasia Grigorieva , Sergey Klimonsky

引用次数: 0

Photo-thermo-acoustic (PTA) effect of a multilayer composite material with periodic micro-nano structures (PMNS): Modeling, simulation and experiment 具有周期性微纳结构（PMNS）的多层复合材料的光-热-声（PTA）效应：建模、仿真和实验

IF 2.5 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2025-03-18 DOI: 10.1016/j.photonics.2025.101383

Renjie Li , Yanze Gao , Weijie Liu , Tongtong An , Hongcheng Pan , Yuan Mu , Xujin Yuan

{"title":"Photo-thermo-acoustic (PTA) effect of a multilayer composite material with periodic micro-nano structures (PMNS): Modeling, simulation and experiment","authors":"Renjie Li , Yanze Gao , Weijie Liu , Tongtong An , Hongcheng Pan , Yuan Mu , Xujin Yuan","doi":"10.1016/j.photonics.2025.101383","DOIUrl":"10.1016/j.photonics.2025.101383","url":null,"abstract":"<div><div>The photo-thermo-acoustic (PTA) effect of a three-layer composite material whose surface is fabricated with many periodic micro-nano structures (PMNS) is investigated in this paper. The material is composed of a silicon substrate, a thermal insulation layer of polyimide, and a light-absorbing layer of aluminum nanoaggregates. We propose a method for analyzing the PTA effect based on the idea of finite element meshing. The PTA conversion processes including the photo-thermal conversion and the thermal-acoustic conversion are quantitatively simulated. The influence of the geometric parameters of the PMNS on the intensity and space distribution of the sound field is analyzed both by simulation and experiment. The results show that fabricating PMNS on composite materials can significantly enhance the PTA effect. And the finite element analyzing method proposed in this paper can correctly describe and predict the PTA effect of composite materials with two-dimensional PMNS. It is also applicable for analyzing the PTA effects of other similar materials or structures.</div></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"64 ","pages":"Article 101383"},"PeriodicalIF":2.5,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143683866","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

A highly efficient and broadband metasurface for linear-to-linear and linear-to-circular polarization conversion in reflection mode 一种在反射模式下用于线性到线性和线性到圆偏振转换的高效宽带超表面

IF 2.5 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2025-03-17 DOI: 10.1016/j.photonics.2025.101382

Abdulkadir Cildir , Farooq A. Tahir , Muhammad Farooq , Adnan Zahid , Muhammad Imran , Qammer H. Abbasi

{"title":"A highly efficient and broadband metasurface for linear-to-linear and linear-to-circular polarization conversion in reflection mode","authors":"Abdulkadir Cildir , Farooq A. Tahir , Muhammad Farooq , Adnan Zahid , Muhammad Imran , Qammer H. Abbasi","doi":"10.1016/j.photonics.2025.101382","DOIUrl":"10.1016/j.photonics.2025.101382","url":null,"abstract":"<div><div>This research paper introduces a new design of metasurface for polarization conversion applications, functioning as both a cross (half-wave plate) and circular (quarter wave plate) polarizer in reflection mode. Comprising unit cells on one side and a metal layer on the other, with a Roger 5880 substrate, the metasurface demonstrates its ability to reflect an incident <span><math><mi>x</mi></math></span>- or <span><math><mi>y</mi></math></span>-polarized wave as a <span><math><mi>y</mi></math></span>- or <span><math><mi>x</mi></math></span>-polarized wave across multiple frequency bands: 9.72–10.00 GHz, 17.65–41.87 GHz, 45.67–45.80 GHz, and 49.66–49.84 GHz. The design achieves a noteworthy 24.82 GHz bandwidth with a 98.72 % fractional bandwidth for linear-to-linear conversion, demonstrating efficiency exceeding 90 %. Simultaneously, the metasurface converts the incident wave into a right-hand circularly polarized (RHCP) wave at frequencies ranging from 9.38 to 9.61 GHz, 45.9–46.1 GHz, and 49.96–50 GHz. It transforms the wave into a left-hand circularly polarized (LHCP) wave within the frequency band from 10.19 to 10.61 GHz, 15.60–16.82 GHz, and 45.45–45.6 GHz. The design also exhibits angular stability up to 45 degrees. Experimental validation using the fabricated prototype confirms the findings, showing good agreement with numerical results. This metasurface comes in handy for future communication, radar application, and health applications. This metasurface is highly suitable for future communication systems, radar applications, and healthcare technologies.</div></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"64 ","pages":"Article 101382"},"PeriodicalIF":2.5,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143683867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and analysis of metamaterial-based ultra-broadband micro-scaled absorber with vanadium dioxide (VO2) and silicon dioxide (SiO2) for multiple terahertz applications 多太赫兹应用超材料二氧化钒（VO2）和二氧化硅（SiO2）超宽带微尺度吸收器的设计与分析

IF 2.5 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2025-03-17 DOI: 10.1016/j.photonics.2025.101381

Mahesh Valathuru , Pokkunuri Pardhasaradhi , Nagandla Prasad , Boddapati Taraka Phani Madhav , Sudipta Das , Abeer D. Algarni , Mohammed El Ghzaoui

{"title":"Design and analysis of metamaterial-based ultra-broadband micro-scaled absorber with vanadium dioxide (VO2) and silicon dioxide (SiO2) for multiple terahertz applications","authors":"Mahesh Valathuru , Pokkunuri Pardhasaradhi , Nagandla Prasad , Boddapati Taraka Phani Madhav , Sudipta Das , Abeer D. Algarni , Mohammed El Ghzaoui","doi":"10.1016/j.photonics.2025.101381","DOIUrl":"10.1016/j.photonics.2025.101381","url":null,"abstract":"<div><div>This research proposes an ultra-broadband terahertz absorber (UBTA) employing a metamaterial (MTM) structure based on vanadium dioxide (VO<sub>2</sub>). The top layer of the suggested MTM-UBTA model is made up of VO<sub>2</sub> that is 0.2 µm thick, the bottom layer is made up of 3 µm thick gold material, and the middle layer is made up of silicon dioxide (SiO<sub>2</sub>) dielectric material of 7 µm thickness. The simulation results indicate an absorption bandwidth of 4.1 THz, from 2.8 to 6.9 THz, obtained under normal incidence. The suggested absorber maintains absorption above 92 % over a broad operating wavelength of 43.44 μm to 107.06 μm. The main goal of this study is to look into THz metamaterial absorbers based on VO<sub>2</sub> in great detail, including every facet of their design validation and hys RevL through an ECM (Equivalent Circuit Model) approach. Furthermore, the impact of incident and polarization angle on absorbance for TE and TM modes is discussed and polarization insensitivity is verified. The prescribed MTM-ultra-broadband terahertz absorber is suitable for intelligent absorption, terahertz tuning, modulation, cloaking, optic-electro switching, biological sensing, and stealth technology.</div></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"64 ","pages":"Article 101381"},"PeriodicalIF":2.5,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143683868","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

NanoPhotoNet: AI-enhanced design tool for reconfigurable and high-performance multi-layer metasurfaces NanoPhotoNet：人工智能增强的设计工具，用于可重构和高性能的多层超表面

IF 2.5 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2025-03-12 DOI: 10.1016/j.photonics.2025.101379

Omar A.M. Abdelraouf , Ahmed Mousa , Mohamed Ragab

{"title":"NanoPhotoNet: AI-enhanced design tool for reconfigurable and high-performance multi-layer metasurfaces","authors":"Omar A.M. Abdelraouf , Ahmed Mousa , Mohamed Ragab","doi":"10.1016/j.photonics.2025.101379","DOIUrl":"10.1016/j.photonics.2025.101379","url":null,"abstract":"<div><div>Metasurfaces are crucial in advancing flat optics and nanophotonics, offering unique advantages in creating vibrant structural colors and high-Q factor cavities. Multi-layer metasurfaces (MLMs) take this further by enhancing light-matter interactions inside the single meta-atom at the nanoscale. However, optimizing MLM designs is challenging due to the complex interplay of many parameters, making traditional simulation methods slow and inefficient. In this work, we introduce NanoPhotoNet, an advanced AI-powered design tool that leverages a hybrid deep neural network (DNN) combining convolutional neural networks (CNN) and Long Short-Term Memory (LSTM) models. NanoPhotoNet significantly accelerates the design process for MLMs, achieving over 98.3 % prediction accuracy and a 50,000x speed improvement compared to conventional techniques. This enables the creation of structural colors far beyond the standard RGB range, increasing the RGB gamut area up to 163 %. Additionally, NanoPhotoNet facilitates tunable color generation, extending the capabilities of MLMs to advanced applications like tunable color filters, nanolasers, and reconfigurable beam steering. This approach represents a transformative progress in metasurface design, unlocking new possibilities for high-performance, tunable nanophotonic devices.</div></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"64 ","pages":"Article 101379"},"PeriodicalIF":2.5,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143637557","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