Plasmonics最新文献_第10页

Si3N4 Dielectric Hemi-sphere Arrayed Plasmonic Metasurface With Top Metal Coating for Multiresonant Absorption in NIR Regime 带顶层金属涂层的 Si3N4 介电半球阵列质子元表面，用于近红外波段的多共振吸收

IF 3 4区物理与天体物理

Plasmonics Pub Date : 2024-07-20 DOI: 10.1007/s11468-024-02427-w

Prasanta Mandal

{"title":"Si3N4 Dielectric Hemi-sphere Arrayed Plasmonic Metasurface With Top Metal Coating for Multiresonant Absorption in NIR Regime","authors":"Prasanta Mandal","doi":"10.1007/s11468-024-02427-w","DOIUrl":"https://doi.org/10.1007/s11468-024-02427-w","url":null,"abstract":"Present report focuses on the design and optical perfect absorption/reflection properties of novel plasmonic metasurface made of square array of Si3N4 hemi-spheres on flat Si3N4 surface. The whole structure is sandwiched between flat gold layer and top gold coating. Theoretical study using Finite Difference Time Domain (FDTD) computation shows multiple near perfect absorptions (80–100%) with narrow line width (~ 50 nm) between 550 to 1500 nm. Four distinct absorption peaks (or reflection dips) are observed at 1020 nm (A1), 888 nm (A2), 614 nm (A3), 740 nm (A4) which can be manipulated by varying structural parameters such as period, hemi-sphere diameter and top gold coating thickness. These multiple absorptions arise due to electric dipolar resonance, magnetic resonance, excitation of various surface plasmon modes (such as (1,0); (2,0); (1,1)) and cavity mode, as evident from near-field analysis. With appropriate structural parameters, multiband well resolved near perfect absorptions are achieved at desired wavelengths. The proposed metasurface is insensitive to the polarization of excitation beam, and has relatively large launch angle tolerance (~ 20°), making it suitable for optical and optoelectronic device integration.","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141745936","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

The Energy Absorption Rate for Three Metal Nano-ellipsoids in a Three-Dimensional Hybrid System 三维混合系统中三种金属纳米椭球的能量吸收率

IF 3 4区物理与天体物理

Plasmonics Pub Date : 2024-07-19 DOI: 10.1007/s11468-024-02408-z

Hala M. Hashim, Somia Abd-Elnabi

引用次数: 0

Highly Sensitive Silver/Tin Selenide/Graphene Multilayer SPR Sensor for Hemoglobin and Glucose Levels Monitoring in Biological Fluids 用于监测生物液体中血红蛋白和葡萄糖水平的高灵敏度银/硒化锡/石墨烯多层 SPR 传感器

IF 3 4区物理与天体物理

Plasmonics Pub Date : 2024-07-19 DOI: 10.1007/s11468-024-02426-x

Ahmad M. Alsaad, M. Al-Hmoud, M. W. Marashdeh, Elen Tolstik, Milad Houshmand, Ahmad Telfah

{"title":"Highly Sensitive Silver/Tin Selenide/Graphene Multilayer SPR Sensor for Hemoglobin and Glucose Levels Monitoring in Biological Fluids","authors":"Ahmad M. Alsaad, M. Al-Hmoud, M. W. Marashdeh, Elen Tolstik, Milad Houshmand, Ahmad Telfah","doi":"10.1007/s11468-024-02426-x","DOIUrl":"https://doi.org/10.1007/s11468-024-02426-x","url":null,"abstract":"This work presents the simulation of a novel surface plasmon resonance (SPR) biosensor composed of silver/tin-selenide/graphene. The designed sensor aims to detect biological constituents in various chemical and biological solutions. While simulation packages based on finite element methods (FEM) are typically utilized in engineering and physics for structural and fluid dynamics analyses, their application in medical diagnostics is less common. In this study, we employed a simple FEM simulation method for medical diagnostics. The functionality of the proposed FEM-based simulated biosensor is examined by testing it on hemoglobin and glucose samples of a diabetic person. In the blood samples analyzed, a 6.1025 g/l increase in hemoglobin (HB) level corresponded to a 0.001 refractive index unit (RIU) increment. The SPR sensor design presented in this work demonstrated a novel capability to detect such minute changes using a simple and cost-effective setup, achieving an angular sensitivity of 158 deg/RIU. Additionally, the SPR sensor was employed for detecting glucose concentrations in urine samples, offering a potential indicator for diabetes diagnosis. The novelty of this SPR sensor lies in its simple schematic design, enabling precise detection of both hemoglobin and glucose levels.","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141739493","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

Unravelling PT Symmetry: Applications in Metamaterials 解开 PT 对称性：超材料中的应用

IF 3 4区物理与天体物理

Plasmonics Pub Date : 2024-07-17 DOI: 10.1007/s11468-024-02414-1

Charumathi P. R., Senthilnathan K.

{"title":"Unravelling PT Symmetry: Applications in Metamaterials","authors":"Charumathi P. R., Senthilnathan K.","doi":"10.1007/s11468-024-02414-1","DOIUrl":"https://doi.org/10.1007/s11468-024-02414-1","url":null,"abstract":"Physicists are always riveted in predicting how a physical system behaves as a function of time. We begin this review article by understanding various formalisms to study the dynamics of the systems. The once-accepted belief that the Hamiltonian had to be Hermitian to ensure real eigenvalues got crashed down by parity-time (PT) symmetry where the Hamiltonian is no longer Hermitian. Thus, the idea of PT symmetry demonstrated that Hamiltonian's Hermicity is not necessary but sufficient to ensure the real eigenvalues. In this review article, we clearly describe the fundamental principle of PT symmetry, its significant attributes and its evolution in various fields of Physics, especially in Optics. In recent years, an artificial material called metamaterial has gained phenomenal momentum due to its unusual electromagnetic properties. These subwavelength-scale artificial electromagnetic materials can provide a variety of mediums for exploring non-Hermitian phenomena. Thus, the implementation of PT symmetry in metamaterial opened up an extended range of unusual phenomena in light-matter interaction. This paper addresses recent developments in PT metamaterials and highlights a few of its applications.<h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141718475","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

Tunability of Plasmon Modes at Uniaxial Chiral–Black Phosphorus Planar Structure 单轴手性黑磷平面结构的等离子体模式可调谐性

IF 3.3 4区物理与天体物理

Plasmonics Pub Date : 2024-07-15 DOI: 10.1007/s11468-024-02419-w

M. Umair, A. Ghaffar, M. Alkanhal, Y. Khan, M. U. Shahid

引用次数: 0

Quartz Substrate-Based Super Absorber Using Graphene Material with 18 Absorption Bands for Terahertz Applications 使用石墨烯材料的石英基底超级吸收器具有 18 个吸收带，可用于太赫兹应用

IF 3 4区物理与天体物理

Plasmonics Pub Date : 2024-07-13 DOI: 10.1007/s11468-024-02416-z

Nagandla Prasad, Pokkunuri Pardhasaradhi , Boddapati Taraka Phani Madhav, Jammula Lakshmi Narayana, Tanvir Islam, Mohammed El Ghzaoui, Sudipta Das

{"title":"Quartz Substrate-Based Super Absorber Using Graphene Material with 18 Absorption Bands for Terahertz Applications","authors":"Nagandla Prasad, Pokkunuri Pardhasaradhi , Boddapati Taraka Phani Madhav, Jammula Lakshmi Narayana, Tanvir Islam, Mohammed El Ghzaoui, Sudipta Das","doi":"10.1007/s11468-024-02416-z","DOIUrl":"https://doi.org/10.1007/s11468-024-02416-z","url":null,"abstract":"Over the last decade, researchers from all over the world have become very much interested in the terahertz gap, which has a frequency range of 0.1 to 10 THz. The terahertz band can be regarded as the next frontier for wireless communications. This work is related to the design of an octagonal-shaped metasurface-based multiband super absorber for various applications in the terahertz regime. The proposed metasurface unit cell has been configured with a simple design that contains only three different layers and achieves 18 absorption peaks with more than 90% absorption levels. The desired geometry has been structured by using an octagon-shaped graphene-based radiating patch, a quartz substrate material as a dielectric space layer, and, finally, a golden patch at the bottom layer to prevent electromagnetic wave transmission. The thickness of the golden layer is taken as 0.2 µm, the thickness of the quartz substrate material is selected as 55 µm, and the thickness of graphene is considered as 1 nm. The overall size of the proposed unit cell becomes 70 × 70 × 55.201 µm3. The better performance of the proposed metasurface absorber can be obtained by fixing the chemical potential of graphene material at 0.3 eV. The proposed absorber also exhibits a polarization-insensitive nature. Additionally, the structure is also validated through an equivalent circuit approach with the support of the ADS tool and both E- and H-field distributions are explained at each absorption peak frequency. The proposed structure’s metamaterial properties demonstrate the absorber’s metamaterial nature. Based on the findings, the proposed metamaterial perfect absorber could be a suitable choice for terahertz sensing, imaging, and high-speed communication applications.","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141613659","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

High-Performance Fiber Optic SERS Platform Based on Self-assembly AuNPs on Silver Dendrite Nanostructures Using Laser-Assisted Plasmon-Mediated Method for Toxic Pesticide Detection 基于银树枝状纳米结构上自组装 AuNPs 的高性能光纤 SERS 平台，采用激光辅助质子介导法检测有毒农药

IF 3 4区物理与天体物理

Plasmonics Pub Date : 2024-07-13 DOI: 10.1007/s11468-024-02423-0

Pham Thanh Binh, Pham Van Hai, Hoang Thi Hong Cam, Nguyen Thuy Van, Nguyen Van Chuc, Bui Huy, Vu Duc Chinh, Pham Van Hoi

{"title":"High-Performance Fiber Optic SERS Platform Based on Self-assembly AuNPs on Silver Dendrite Nanostructures Using Laser-Assisted Plasmon-Mediated Method for Toxic Pesticide Detection","authors":"Pham Thanh Binh, Pham Van Hai, Hoang Thi Hong Cam, Nguyen Thuy Van, Nguyen Van Chuc, Bui Huy, Vu Duc Chinh, Pham Van Hoi","doi":"10.1007/s11468-024-02423-0","DOIUrl":"https://doi.org/10.1007/s11468-024-02423-0","url":null,"abstract":"In this study, we present the fabrication and demonstrate the high performance of a fiber optic surface-enhanced Raman scattering (SERS) platform featuring self-assembled gold nanoparticles (AuNPs) on silver dendrite nanostructures (AgD nanostructures) using a laser-assisted plasmon-mediated method. The uniform distribution of AuNPs on AgD nanostructures resulted in exceptional Raman intensity enhancement, with analytical enhancement factors estimated at 3.37 × 107 for Rhodamine 6G (R6G) and a consistent SERS signal with an excellent relative standard deviation (RSD) value of 4.8%. Additionally, the stability of this substrate was evaluated over different time intervals, with SERS data for a 1-µM R6G solution collected over 14 days. The substrate’s potential was further explored by detecting two toxic pesticides, Chlorpyrifos and Chlordane, with estimated detection limits of 1.24 ppb and 1.64 ppb, respectively. Consequently, the proposed fiber optic SERS platform shows significant potential for detecting Chlorpyrifos and Chlordane in the environment.","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141613660","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

Polydimethylsiloxane-Assisted Surface Plasmon Resonance–Based Temperature Sensor 聚二甲基硅氧烷辅助表面等离子体共振温度传感器

IF 3 4区物理与天体物理

Plasmonics Pub Date : 2024-07-13 DOI: 10.1007/s11468-024-02421-2

Chunfeng Shen, Kaihua Wu, Jingcheng Zhang, Yan Guo

{"title":"Polydimethylsiloxane-Assisted Surface Plasmon Resonance–Based Temperature Sensor","authors":"Chunfeng Shen, Kaihua Wu, Jingcheng Zhang, Yan Guo","doi":"10.1007/s11468-024-02421-2","DOIUrl":"https://doi.org/10.1007/s11468-024-02421-2","url":null,"abstract":"Since the important applications in multiple fields, research on temperature sensors based on surface plasmon resonance (SPR) technology is receiving increasing attention. Therefore, a SPR-based temperature sensor consisting of temperature-sensitive material of polydimethylsiloxane (PDMS) and titanium dioxide (TiO2) forming a bi-layer silver structure has been proposed and investigated in this work. As a solid medium with a high thermo-optic coefficient, the PDMS can significantly improve the temperature sensitivity of the sensor. By adjusting the thickness of each layer of the TiO2-Ag-TiO2-Ag-PDMS sensing structure, the optimal thickness combination of the structure can be obtained. The thickness of the TiO2 layer between two silver layers and the thickness of the PDMS layer can adjust the position of the resonance angle. Adding a monolayer of WS2 upon the PDMS layer can further improve the sensitivity. With an incident with monochromatic light at 632.8 nm, the maximum sensitivity of the structure in the range of 275–360 K and 321–360 K is − 0.094°/K (air) and − 0.129°/K (ethanol), respectively, maintaining high linearity in the range of 310–340 K. The temperature sensitivity also remains high linearity at wavelengths of 620 nm and 680 nm. The proposed sensor structure exhibits excellent sensitivity and figures of merit in the field of sensing temperature.","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141614911","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

Highly Thermal Tunable Propagating Surface Plasmons on Supported Semiconductor Nanowire Metamaterial 支撑半导体纳米线超材料上的高热调谐传播表面等离子体

IF 3 4区物理与天体物理

Plasmonics Pub Date : 2024-07-11 DOI: 10.1007/s11468-024-02417-y

Tatjana Gric, Edik Rafailov

引用次数: 0

Design and Numerical Analysis of a Fractal Tree Shaped Graphene Based Metasurface Solar Absorber 基于分形树状石墨烯的金属表面太阳能吸收器的设计与数值分析

IF 3 4区物理与天体物理

Plasmonics Pub Date : 2024-07-09 DOI: 10.1007/s11468-024-02418-x

Sandip Das, Riya Sen, Sunil Sharma

{"title":"Design and Numerical Analysis of a Fractal Tree Shaped Graphene Based Metasurface Solar Absorber","authors":"Sandip Das, Riya Sen, Sunil Sharma","doi":"10.1007/s11468-024-02418-x","DOIUrl":"https://doi.org/10.1007/s11468-024-02418-x","url":null,"abstract":"This study introduces a novel solar absorber design using a fractal tree-shaped graphene-based metasurface. The absorber structure consists of tungsten fractal tree arrays on a graphene monolayer, supported by a silicon dioxide (SiO₂) dielectric layer and a tungsten substrate. The entire unit cell measures 0.5 μm × 0.5 μm × 1.16 μm. Performance simulations using COMSOL Multiphysics v5.6 optimized the physical parameters, demonstrating broadband absorption in the spectrum 400–800 THz, with peaks at 430 THz, 510 THz, 590 THz, 670 THz, and 760 THz, reaching up to 95% absorption. The average absorption efficiency was approximately 90%. The absorber's performance is sensitive to the thickness variations of the fractal tree, graphene layer, SiO₂ layer, and tungsten substrate, stabilizing at higher frequencies. Additionally, the design exhibits significant absorbance variability across incidence angles (20° to 65°), with notable peaks around 450 THz and between 400 and 600 THz. The fractal tree geometry enhances light interaction, while the graphene layer's tunable optical properties contribute to sharp absorption peaks. The SiO₂ layer introduces interference effects essential for effective light absorption. The optimized design offers efficient, angle-insensitive broadband absorption, making it a promising candidate for solar energy harvesting applications.","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141585002","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