Plasmonics最新文献_第3页

Plasmonic Properties of Graphene Loaded Waveguide Bounded by Chiroferrite Medium 以铁氧体介质为边界的石墨烯负载波导的等离子特性

IF 3 4区物理与天体物理

Plasmonics Pub Date : 2024-09-09 DOI: 10.1007/s11468-024-02523-x

M. Shaban, Zahraa J. Mohammed, Hussein H. AbdulGhani, Soror Ali Mahdi, Hasan Majdi, N. M. A. Hadia, Laiba, A. Waleed

{"title":"Plasmonic Properties of Graphene Loaded Waveguide Bounded by Chiroferrite Medium","authors":"M. Shaban, Zahraa J. Mohammed, Hussein H. AbdulGhani, Soror Ali Mahdi, Hasan Majdi, N. M. A. Hadia, Laiba, A. Waleed","doi":"10.1007/s11468-024-02523-x","DOIUrl":"https://doi.org/10.1007/s11468-024-02523-x","url":null,"abstract":"Herein, plasmonic characteristics of graphene filled waveguide surrounded by chiroferrite medium are analyzed in the THz frequency spectrum. Graphene conductivity is modelled using the Kobo formula, and impedance boundary conditions are employed to compute dispersion relation. The influence of constitutive variables of chiroferrite medium on the propagation behavior of SPP mode is examined. The propagation behavior of SPPs mode is studied by changing the constitutive parameters of chiroferrite medium and graphene features. From numerical results, it is revealed that effective mode index (EMI, phase velocity, graphene conductivity, and EM wave frequency) can be tailored by adjusting chirality, gyrotropy, and graphene features (chemical potential, number of graphene layers) in the THz frequency range. This work may have potential applications in plasmonic community to design the innovative optical sensors, plasmonic platforms, detectors, and surface waveguides in the THz frequency region and provide active control due to additional degree of freedom in graphene and anisotropy of chiral medium.","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"5 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Compact Three-Channel Photonic Crystal Fiber Sensor Based on Surface Plasmon Resonance 基于表面等离子体共振的紧凑型三通道光子晶体光纤传感器

IF 3 4区物理与天体物理

Plasmonics Pub Date : 2024-09-09 DOI: 10.1007/s11468-024-02522-y

Tianli Huo, Xili Jing, Zhiyong Yin, Tianci Gao, Mingshi Song

{"title":"Compact Three-Channel Photonic Crystal Fiber Sensor Based on Surface Plasmon Resonance","authors":"Tianli Huo, Xili Jing, Zhiyong Yin, Tianci Gao, Mingshi Song","doi":"10.1007/s11468-024-02522-y","DOIUrl":"https://doi.org/10.1007/s11468-024-02522-y","url":null,"abstract":"In order to improve the integration of fiber optic sensors, this paper designs a dual-core three-channel photonic crystal fiber (PCF) optic sensor that can simultaneously measure the refractive index of a liquid, its temperature, and the ambient magnetic field. Based on the PCF as well as SPR principles, the sensor has two D-planes, one coated with PDMS as well as a gold film for detecting temperature and the other coated with a gold film for detecting refractive index and coated with a gold film over the air holes on the side of the core where the refractive index is measured and a magnetic fluid injected into the air holes to detect the magnetic field. The results show a maximum sensitivity of 20,000 nm/RIU for refractive index, a linear sensitivity of 116 pm/Oe for magnetic field, and 5300 pm/°C for temperature when the sample’s refractive index is between 1.36 and 1.42, the temperature is between 0 °C and 50 °C, and the magnetic field is between 20 and 550 Oe. The sensitivity matrix of temperature versus refractive index is also given. The sensor is compact and simple to prepare, providing a new solution for miniaturization and integration of multifunctional photonic devices.","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"3 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Design of Graphene-Based Core/Shell Nanoparticles to Enhance the Absorption of Thin Film Solar Cells 设计基于石墨烯的核/壳纳米粒子以增强薄膜太阳能电池的吸收能力

IF 3 4区物理与天体物理

Plasmonics Pub Date : 2024-09-09 DOI: 10.1007/s11468-024-02476-1

Amir Mehrpanah, Hasan Rasooli Saghai, Babak Sakkaki, Ali Daghigh

{"title":"Design of Graphene-Based Core/Shell Nanoparticles to Enhance the Absorption of Thin Film Solar Cells","authors":"Amir Mehrpanah, Hasan Rasooli Saghai, Babak Sakkaki, Ali Daghigh","doi":"10.1007/s11468-024-02476-1","DOIUrl":"https://doi.org/10.1007/s11468-024-02476-1","url":null,"abstract":"Plasmonic nanoparticles have had a great impact on the enhancement of the absorption of the thin film solar cell. In this study, we propose two core/shell nanoparticles including graphene/Ag and Ag/graphene nanoparticles. For the design of the graphene/Ag nanoparticle, we utilize a graphene quantum dot (GQD) with a diameter of 66 nm as the core and cover it with Ag with a thickness of 1 nm. We compute the permittivity of the GQD based on the Cole–Cole model. For the design of the Ag/graphene nanoparticle, we cover a spherical Ag nanoparticle with a diameter of 66 nm with a graphene layer with a thickness of 1 nm. We model the surface conductivity of the graphene layer based on the Kubo formula. We consider both nanoparticles as homogeneous nanoparticles and obtain their permittivity based on the equivalent dielectric permittivity model. We incorporate these nanoparticles into an optical simulator and extract their scattering cross sections alongside the Ag nanoparticle. The graphene/Ag nanoparticle shows the best scattering performance; meanwhile, Ag nanoparticle has the weakest scattering performance. Then, we design a Si-based thin film solar cell with Ag nanoparticle and compute its characteristics through the FDTD method. Then, we replace the Ag nanoparticle with our nanoparticles. The short-circuit current density (Jsc) of the Si-based cell improves by 26.3% by embedding of Ag nanoparticle in the absorber layer. This improvement increases by embedding of graphene/Ag and Ag/graphene nanoparticles to 35.3% and 36.8%, respectively.","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"59 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 Theoretical Investigation on the Role of Surface Plasmon Excitation in the Cloaking and Protection of Gold Cylindrical Rods Using Metallic Layers of Different Materials 利用不同材料的金属层对表面等离子体激发在金圆柱棒的隐蔽和保护中的作用进行理论研究

IF 3 4区物理与天体物理

Plasmonics Pub Date : 2024-09-06 DOI: 10.1007/s11468-024-02453-8

Sohila Hajihashemi, Bahram Jazi, Samaneh Najari

{"title":"A Theoretical Investigation on the Role of Surface Plasmon Excitation in the Cloaking and Protection of Gold Cylindrical Rods Using Metallic Layers of Different Materials","authors":"Sohila Hajihashemi, Bahram Jazi, Samaneh Najari","doi":"10.1007/s11468-024-02453-8","DOIUrl":"https://doi.org/10.1007/s11468-024-02453-8","url":null,"abstract":"This work investigates the excitation of plasmons in the common region between two coaxial cylindrical waveguides nested within each other, utilizing planar electromagnetic waves. The structure under consideration comprises a metallic antenna shielded with another metallic thin layer, both metals assumed to be cylindrical symmetrically without a gap and in a concentric configuration. The conductivity of the metals is evaluated using the Drude theory. An incident electromagnetic wave in B-mode with (B_zne 0) is radiated onto the mentioned antenna. By employing wave scattering theory and solving the field equations in each region, including the vacuum, outer metallic thin layer, and inner metallic core, the surface charge density resulting from the presence of surface plasmons at the interface between the inner metallic core and the outer metallic layer, as well as between the metallic layer and the vacuum region, is calculated and analyzed. The variations in surface plasmon density at the first interface (the common boundary between the two metals) and the interface between the metal and vacuum are investigated concerning changes in the incident wave frequency and the radii of the antenna layers. It is demonstrated that the excitation of plasmons occurs most significantly in the frequency range where the conductivities of the inner metallic core and the metallic layer have opposite signs, leading to synchronization between surface plasmons.","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"126 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

D-Shaped Photonic Crystal Fiber Plasmonic Sensor Based on Au-Ta2O5 Composite Micro-grating 基于金-Ta2O5 复合微光栅的 D 形光子晶体光纤等离子传感器

IF 3 4区物理与天体物理

Plasmonics Pub Date : 2024-09-06 DOI: 10.1007/s11468-024-02412-3

Mengqi Li, Hong Gu, Xuan Wu, Xiaotong Li

引用次数: 0

Enhancing Sensing and Imaging Capabilities Through Surface Plasmon Resonance for Deepfake Image Detection 通过表面等离子体共振增强传感和成像能力，用于深度伪图像检测

IF 3 4区物理与天体物理

Plasmonics Pub Date : 2024-09-06 DOI: 10.1007/s11468-024-02492-1

R. Uma Maheshwari, B.Paulchamy, Binay Kumar Pandey, Digvijay Pandey

{"title":"Enhancing Sensing and Imaging Capabilities Through Surface Plasmon Resonance for Deepfake Image Detection","authors":"R. Uma Maheshwari, B.Paulchamy, Binay Kumar Pandey, Digvijay Pandey","doi":"10.1007/s11468-024-02492-1","DOIUrl":"https://doi.org/10.1007/s11468-024-02492-1","url":null,"abstract":"Plasmonic nanomaterials have revolutionized sensing and imaging technologies due to their unique optical properties, particularly surface plasmon resonance (SPR). These materials offer enhanced sensitivity and resolution, making them promising candidates for applications in deepfake image detection, where accurate authentication of digital content is crucial. This work presents the application of plasmonic nanomaterials in enhancing sensing and imaging capabilities for deepfake detection. Gold nanoparticles functionalized with specific ligands are employed to exploit SPR effects, enabling sensitive detection of minute alterations in image content. A spectroscopic setup is utilized to measure the SPR shifts corresponding to changes induced by deepfake manipulations. Experimental results demonstrate that the SPR-based sensing approach achieves a detection accuracy of over 95% in distinguishing deepfake images from authentic ones. The SPR sensor exhibits a high signal-to-noise ratio, providing robust performance even in complex imaging scenarios with varying lighting conditions and image resolutions. Plasmonic nanomaterials, leveraging SPR, offer a reliable method for enhancing deepfake image detection capabilities. The demonstrated high accuracy and sensitivity underscore their potential in combating digital media forgery, contributing to the development of more secure and trustworthy authentication systems for visual content.","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"1 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Eccentric Core Optical Fiber SPR Sensor for Refractive Index Sensing Characteristics 偏心芯光纤 SPR 传感器的折射率传感特性

IF 3 4区物理与天体物理

Plasmonics Pub Date : 2024-09-05 DOI: 10.1007/s11468-024-02508-w

Jianxia Liu, Chang Li, Libo Yuan, Chenghao Li

引用次数: 0

Terahertz Plasmonic Biosensor Leveraging Ag-Au-Graphene Heterostructures for Quantitative Hemoglobin Analysis with Machine Learning Algorithms for Performance Optimization 利用银-金-石墨烯异质结构进行血红蛋白定量分析的太赫兹等离子体生物传感器，以及用于性能优化的机器学习算法

IF 3 4区物理与天体物理

Plasmonics Pub Date : 2024-09-04 DOI: 10.1007/s11468-024-02520-0

Jacob Wekalao, Ngaira Mandela, Costable Lefu, Obed Apochi, Calistus Wamalwa, Wesley Langat

{"title":"Terahertz Plasmonic Biosensor Leveraging Ag-Au-Graphene Heterostructures for Quantitative Hemoglobin Analysis with Machine Learning Algorithms for Performance Optimization","authors":"Jacob Wekalao, Ngaira Mandela, Costable Lefu, Obed Apochi, Calistus Wamalwa, Wesley Langat","doi":"10.1007/s11468-024-02520-0","DOIUrl":"https://doi.org/10.1007/s11468-024-02520-0","url":null,"abstract":"This investigation presents the design, simulation, and performance analysis of a terahertz-based biosensor for hemoglobin detection. The sensor architecture incorporates a synergistic combination of graphene, gold, and silver metasurfaces in a hierarchical resonator structure. Extensive parametric analysis was conducted to optimize the sensor's performance characteristics. The optimized sensor demonstrates high sensitivity, achieving up to 1000 GHzRIU−1, with a figure of merit of 3.289 RIU−1. Experimental results indicate effective detection of hemoglobin concentrations ranging from 10 to 40 g/L, corresponding to refractive indices between 1.34 and 1.43. Electromagnetic field distribution analysis exemplifies peak absorption at 0.65 THz. Furthermore, the sensor’s potential for binary encoding applications was evaluated with remarkable performance. Machine learning optimization, employing a decision tree regressor, demonstrates an optimal R2 score of 100% across various parameter combinations, suggesting potential for the development of accurate sensing systems. The proposed sensor design represents a significant advancement in terahertz biosensing technology, with implications for enhanced medical diagnostics and biomedical research applications.","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"41 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Broadband MXene-Based Metasurafce Absorber for Visible Region 用于可见光区域的基于 MXene 的宽带 Metasurafce 吸收器

IF 3 4区物理与天体物理

Plasmonics Pub Date : 2024-09-04 DOI: 10.1007/s11468-024-02519-7

Neda Daliran, Abdollah Hassanzadeh

引用次数: 0

Plasmonic ELISA for Tear Biomarkers: Etching in Plasmonic Paper with Dual-Signal Readout 泪液生物标志物的等离子 ELISA：等离子纸蚀刻与双信号读出

IF 3 4区物理与天体物理

Plasmonics Pub Date : 2024-08-31 DOI: 10.1007/s11468-024-02512-0

Myeongseong Sim, Hyeokjung Kim, Hyeran Noh

{"title":"Plasmonic ELISA for Tear Biomarkers: Etching in Plasmonic Paper with Dual-Signal Readout","authors":"Myeongseong Sim, Hyeokjung Kim, Hyeran Noh","doi":"10.1007/s11468-024-02512-0","DOIUrl":"https://doi.org/10.1007/s11468-024-02512-0","url":null,"abstract":"Tear biomarkers have received much attention for non-invasive monitoring of ocular and systemic diseases. Although various approaches have been developed for on-site detection of tear biomarkers, there is still the limited number of simple and reliable sensing platform in the clinical setting. Here, we introduce a plasmonic enzyme-linked immunosorbent assay (ELISA) that utilizes Ag/chitosan plasmonic paper with dual-signal readout to detect immunoglobulin G as a model tear biomarker. The sensing mechanism for a colorimetric and surface-enhanced Raman scattering (SERS) dual-signal readout is attributed to the etching of Ag nanoparticles anchored to the plasmonic paper. This etching induces both a color shift and a reduction in the Raman enhancement of the plasmonic paper. The optimized etching system demonstrates the feasibility of performing simultaneous immunoassay and etching on a plasmonic substrate without requiring an additional etching step. The detection limit was achieved at concentrations approximately 100 times lower than the physiological tear concentration, along with selective detection in simulated tear fluid. Furthermore, the dual-mode detection improves accuracy and efficiency by comparing the results of overlap detection range and enabling pre-screening with colorimetric results prior to SERS analysis. This approach holds promise as a versatile point-of-care sensing platform that can easily and reliably detect tear biomarkers.","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"7 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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