Plasmonics最新文献_第4页

Tuning of Surface Plasmon Resonance in Sputtered Al/In Co-Doped ZnO for Telecommunication Wavelength: An Investigation Using Kretschmann Configuration 溅射Al/ in共掺杂ZnO的表面等离子体共振在通信波长上的调谐：基于Kretschmann组态的研究

IF 4.3 4区物理与天体物理

Plasmonics Pub Date : 2025-05-02 DOI: 10.1007/s11468-025-02977-7

Soumya K, I. Packia Selvam, S. N. Potty

{"title":"Tuning of Surface Plasmon Resonance in Sputtered Al/In Co-Doped ZnO for Telecommunication Wavelength: An Investigation Using Kretschmann Configuration","authors":"Soumya K, I. Packia Selvam, S. N. Potty","doi":"10.1007/s11468-025-02977-7","DOIUrl":"10.1007/s11468-025-02977-7","url":null,"abstract":"<div><p>Doped ZnO thin films with high carrier density of the order of ~ 10<sup>20</sup>/cm<sup>3</sup> and negative real permittivity in near infrared, possessing specific optical property such as surface plasmon resonance (SPR), have been of interest for applications in sensing, optical communication, etc. This work reports the development of plasmonic thin film, prepared by radio frequency sputtering technique using co-doped mixture of Al and In in ZnO. We studied the structural, electrical and optical properties of co-doped ZnO films by varying the co-dopant ratio of Al:In. The chances for Raman active inter-conduction band transitions occurring for heavily doped n type materials were examined using the Fano resonance fitting. The bandgap variation of the films with co-doping was in accordance with the band renormalisation effect. The Drude-Lorentz model was used for the theoretical estimation of wavelength range of real negative permittivity, the same was observed for wavelengths beyond 1350 nm for all co-doped films. The experimental demonstration of surface plasmon resonance via the Kretschmann setup was consistent with theoretical expectations. Moreover, we showed that adjusting the co-dopant ratios of Al:In tune the SPR in co-doped ZnO from 1360 to 1830 nm. Additionally, for Al:In = 100:0 and 75:25, the resonance wavelengths appeared in the crucial telecommunication range, with SPR propagation lengths of 0.357 μm and 0.263 μm, respectively making it a promising plasmonic material for communication. The tunable SPR wavelength of these films provided a novel method for metal-free SPR applications.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 8","pages":"5881 - 5895"},"PeriodicalIF":4.3,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923138","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

Development of a Surface Plasmon Resonance Sensor Based MXene (({mathbf{T}mathbf{i}}_{3}{mathbf{C}}_{2}{mathbf{T}}_{mathbf{x}})) for the Detection of Carcinoembryonic Antigen (CEA) 基于MXene （({mathbf{T}mathbf{i}}_{3}{mathbf{C}}_{2}{mathbf{T}}_{mathbf{x}})）表面等离子体共振传感器检测癌胚抗原的研制

IF 4.3 4区物理与天体物理

Plasmonics Pub Date : 2025-04-30 DOI: 10.1007/s11468-025-02982-w

Ali Khodaie, Hamid Bahador, Hamid Heidarzadeh

{"title":"Development of a Surface Plasmon Resonance Sensor Based MXene (({mathbf{T}mathbf{i}}_{3}{mathbf{C}}_{2}{mathbf{T}}_{mathbf{x}})) for the Detection of Carcinoembryonic Antigen (CEA)","authors":"Ali Khodaie, Hamid Bahador, Hamid Heidarzadeh","doi":"10.1007/s11468-025-02982-w","DOIUrl":"10.1007/s11468-025-02982-w","url":null,"abstract":"<div><p>Recent scientific investigations have highlighted the carcinoembryonic antigen’s (CEA) critical role in diagnosing and monitoring various cancers, including liver, colon, breast, and colorectal cancers. Elevated levels of CEA in human serum are associated with these malignancies, measuring CEA concentrations essential for effective cancer prevention and diagnosis. This research has developed a sophisticated two-dimensional)2D( materials-based surface plasmon resonance (SPR) optical sensor utilizing a Kretschmann configuration. This innovative sensor incorporates multiple layers, such as a BK7 prism, gold (Au), MXene (<span>({text{Ti}}_{3}{text{C}}_{2}{text{T}}_{text{x}})</span>), molybdenum trioxide (MoO<sub>3</sub>), black phosphorus (BP), and molybdenum disulfide (MoS<sub>2</sub>) to enhance its detection capabilities for CEA in aqueous solutions. The performance of this SPR sensor is rigorously analyzed using the finite difference time domain (FDTD) numerical solution method, which allows for precise evaluations of its sensitivity and other critical parameters. At a wavelength of 633 nm, the sensor’s performance metrics include sensitivity, figure of merit (FOM), detection accuracy (DA), detection limit (DL), signal-to-noise ratio (SNR), and severity rating (SR). Notably, the sensor achieved a remarkable sensitivity of 196.91 deg/RIU and a FOM of 14.87 RIU<sup>−1</sup>, indicating significant improvements over previous designs. Comparative analyses reveal that this SPR biosensor outperforms earlier models in terms of sensitivity, positioning it as a promising alternative for applications in biosensing, food safety monitoring, medical diagnostics, and environmental assessments. The advancements in this research underscore the potential for SPR technology to provide rapid and accurate detection of CEA levels, thereby contributing to more effective cancer management strategies. </p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 8","pages":"5867 - 5879"},"PeriodicalIF":4.3,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923268","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

Characterization and Antibacterial Properties of CoCrCuFeNi High-Entropy Alloy Nanoparticles Synthesized by Lactobacillus acidophilus 嗜酸乳杆菌合成CoCrCuFeNi高熵合金纳米颗粒的表征及抗菌性能

IF 4.3 4区物理与天体物理

Plasmonics Pub Date : 2025-04-28 DOI: 10.1007/s11468-024-02556-2

Nazar Khalaf Mahan, Mohammed Faraj Al-Marjani, Ganesan Krishnan, Mohammed A. Salman

{"title":"Characterization and Antibacterial Properties of CoCrCuFeNi High-Entropy Alloy Nanoparticles Synthesized by Lactobacillus acidophilus","authors":"Nazar Khalaf Mahan, Mohammed Faraj Al-Marjani, Ganesan Krishnan, Mohammed A. Salman","doi":"10.1007/s11468-024-02556-2","DOIUrl":"10.1007/s11468-024-02556-2","url":null,"abstract":"<div><p><i>Lactobacillus acidophilus</i> (LB) can produce high-purity nanoparticles; it is a top-down biological method based on the principle of dividing metal ion bulk precursors into metal atoms; this biosynthesis method was used in this work to synthesize CoCrCuFeNi high-entropy alloy. The characteristics of the synthesized nanoparticles were examined using XRD, SEM, and FTIR analysis. Subsequently, their antibacterial and antibiofilm activities were tested against a Gram-positive bacteria <i>Staphylococcus aureus</i> (<i>S. aureus</i>) and a Gram-negative bacteria <i>Escherichia coli</i> (<i>E. coli</i>) that were isolated from the urinary tract infection. The results indicated that CoCrCuFeNi HEA NPs produced via the LB, along with CoCrCuFeNi HEA NPs + LB supernatant, displayed antibacterial inhibition zones measuring 35 mm against <i>E. coli</i> and 25 mm against <i>S. aureus</i>. On the other hand, the antibiofilm effectiveness of the CoCrCuFeNi HEA NPs + LB on a catheter was determined to surpass 45% against <i>E. coli</i>.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 8","pages":"5857 - 5865"},"PeriodicalIF":4.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923223","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

Theoretical Analysis of Perovskite/Ultrathin Silicon Tandem Solar Cells with Ag Nanocone Plasmonics 具有银纳米锥等离子体的钙钛矿/超薄硅串联太阳能电池的理论分析

IF 4.3 4区物理与天体物理

Plasmonics Pub Date : 2025-04-28 DOI: 10.1007/s11468-025-02975-9

Chengyao Hu, Chen Shi, Hongqiang Qian, Jing Zhang, Yan Hu, Panpan Zhou, Zhang Zhang, Yushen Liu, Yawei Kuang

{"title":"Theoretical Analysis of Perovskite/Ultrathin Silicon Tandem Solar Cells with Ag Nanocone Plasmonics","authors":"Chengyao Hu, Chen Shi, Hongqiang Qian, Jing Zhang, Yan Hu, Panpan Zhou, Zhang Zhang, Yushen Liu, Yawei Kuang","doi":"10.1007/s11468-025-02975-9","DOIUrl":"10.1007/s11468-025-02975-9","url":null,"abstract":"<div><p>Perovskite and ultrathin single-crystalline silicon can form flexible tandem solar cells, achieving enhanced utilization of solar spectrum through the combination of wide-bandgap perovskite and narrow-bandgap silicon materials. However, as the thickness of light-absorbing layers decreases, current mismatch induced by optical mismatch has become a critical bottleneck constraining the efficiency improvement of ultrathin tandem cells. This study systematically investigates the optical absorption enhancement mechanisms of Ag nanocone plasmonic structures in tandem solar cells through theoretical analysis and numerical simulations. The results demonstrate that for tandem cells with ultrathin absorber layers in both top and bottom subcells, positional optimization of plasmonic structures can significantly improve light absorption efficiency via synergistic effects of tip-field enhancement and light scattering. For dual-bandgap ultrathin tandem cells, the optical absorption spectrum is divided into three characteristic regions. Inverted placement of Ag nanocone arrays within the intermediate layer enables finer regulation of light absorption in both top and bottom subcells, thereby effectively addressing optical mismatch issues. This research provides a theoretical foundation and technical guidance for designing high-efficiency, low-cost, flexible, and lightweight perovskite/silicon tandem solar cells.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 8","pages":"5847 - 5856"},"PeriodicalIF":4.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923224","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 and Development of Graphene-Based C-Shaped Silicon-MgF2-Silicon Materials Surface Plasmon Resonance Biosensor for Cervical Cancer Detection 基于石墨烯的c型硅- mgf2 -硅材料表面等离子体共振生物传感器的设计与研制

IF 4.3 4区物理与天体物理

Plasmonics Pub Date : 2025-04-14 DOI: 10.1007/s11468-025-02958-w

Gokila Dhandapani, Porchelvi N, Arun Kumar U, Fahad Ahmed Al-Zahrani

{"title":"Design and Development of Graphene-Based C-Shaped Silicon-MgF2-Silicon Materials Surface Plasmon Resonance Biosensor for Cervical Cancer Detection","authors":"Gokila Dhandapani, Porchelvi N, Arun Kumar U, Fahad Ahmed Al-Zahrani","doi":"10.1007/s11468-025-02958-w","DOIUrl":"10.1007/s11468-025-02958-w","url":null,"abstract":"<div><p>A cervical biosensor is a diagnostic tool designed to detect biomarkers associated with cervical cancer. It provides early, non-invasive, and highly sensitive detection, aiding in timely diagnosis and improving patient outcomes. A high-sensitivity sensor is ideal for the early detection of cervical cancer, as it can detect low levels of biomarkers associated with the disease. Early detection improves the chances of successful treatment, allowing for timely intervention and better patient outcomes. This makes high-sensitivity sensors crucial in developing more effective, non-invasive diagnostic tools for cervical cancer. Our sensor demonstrates a high sensitivity of 1208 nm/RIU, enabling precise and early detection of cervical cancer biomarkers for improved diagnosis. Structural optimization enhances the sensor’s sensitivity by adjusting key parameters such as length, width, and height, ensuring improved performance and more accurate detection capabilities for cervical cancer biomarkers. The high-sensitivity sensor developed in this research can be utilized to create advanced devices for the early detection of cervical cancer, offering improved diagnostic accuracy and efficiency.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 8","pages":"5835 - 5845"},"PeriodicalIF":4.3,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923147","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

Enhanced Coupling and High-Sensitivity Multichannel Plasmonic Sensor Using Split Semicircular Ring Resonators for Refractive Index and Temperature Detection 用于折射率和温度检测的分离式半圆环谐振腔增强耦合和高灵敏度多通道等离子体传感器

IF 4.3 4区物理与天体物理

Plasmonics Pub Date : 2025-04-12 DOI: 10.1007/s11468-025-02963-z

Yuan-Fong Chou Chau, Sy-Hann Chen, Hung Ji Huang, Muhammad Raziq Rahimi Kooh, Roshan Thotagamuge, Chee Ming Lim

{"title":"Enhanced Coupling and High-Sensitivity Multichannel Plasmonic Sensor Using Split Semicircular Ring Resonators for Refractive Index and Temperature Detection","authors":"Yuan-Fong Chou Chau, Sy-Hann Chen, Hung Ji Huang, Muhammad Raziq Rahimi Kooh, Roshan Thotagamuge, Chee Ming Lim","doi":"10.1007/s11468-025-02963-z","DOIUrl":"10.1007/s11468-025-02963-z","url":null,"abstract":"<div><p>We present a highly sensitive, multimode metal–insulator-metal (MIM) plasmonic sensor with ten resonance modes for refractive index (RI) and temperature sensing across the visible to near-infrared spectrum. The sensor consists of a resonator with paired semi-circular rings, a split gap, and a crossing air path coupled to two independent MIM waveguides (WGs). Using finite element method (FEM) simulations, we analyze the optical responses—including transmittance spectra and H- and E-field distributions—to optimize performance. The sensor generates ten distinct Fano resonance modes and operates as a high-precision plasmonic RI sensor, detecting RI variations as small as 0.01. It achieves a maximum RI sensitivity of 4500 nm/RIU and a temperature sensitivity of - 1.25 nm/°C, demonstrating exceptional performance. This work introduces a novel multimode Fano resonance-based sensor with a unique paired semicircular ring design, enabling ten resonance modes for simultaneous RI and temperature detection. The innovative structure holds great potential for high-sensitivity sensing systems and advanced nanophotonic applications.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 8","pages":"5819 - 5834"},"PeriodicalIF":4.3,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923116","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

Surface-Enhanced Raman Spectroscopy for Characterization of Blood Serum Samples of Liver Carcinoma Patients Using 100 kDa Filtration Devices 使用100 kDa过滤装置的表面增强拉曼光谱用于肝癌患者血清样品的表征

IF 4.3 4区物理与天体物理

Plasmonics Pub Date : 2025-04-10 DOI: 10.1007/s11468-025-02941-5

Saima Afzal, Seher Nawabzadi, Haq Nawaz, Muhammad Irfan Majeed, Hanen Karamti, Muhammad Hafeez Ullah, Habiba Shahid, Muntaha Saleem, Rabia Tariq, Ayesha Saif, Sana Mehmood, Aneela Falak Sher, Rafia Atta, Munazza Hakeem, Muhammad Imran

{"title":"Surface-Enhanced Raman Spectroscopy for Characterization of Blood Serum Samples of Liver Carcinoma Patients Using 100 kDa Filtration Devices","authors":"Saima Afzal, Seher Nawabzadi, Haq Nawaz, Muhammad Irfan Majeed, Hanen Karamti, Muhammad Hafeez Ullah, Habiba Shahid, Muntaha Saleem, Rabia Tariq, Ayesha Saif, Sana Mehmood, Aneela Falak Sher, Rafia Atta, Munazza Hakeem, Muhammad Imran","doi":"10.1007/s11468-025-02941-5","DOIUrl":"10.1007/s11468-025-02941-5","url":null,"abstract":"<div><p>Early detection of liver carcinoma is considered very important to overcome the growing mortalities worldwide. Surface-enhanced Raman spectroscopy (SERS) is a highly potential diagnostic technique for accurate analysis of 100 kDa filtrate portions of liver carcinoma patients. In this research work, blood serum samples were analyzed which contain low molecular weight fraction (LMWF) and high molecular weight fraction (HMWF) of biomolecules but later suppressed the earlier which are considered as disease biomarkers. However, the ultra-centrifugal devices having cut off values of 100 kDa are found to be useful to separate biomolecules on the basis of their molecular weight in the form of filtrate, with molecular weight less than 100 KDa and residue with molecular weight greater than 100 KDa. The chemometric tools including principal component analysis (PCA) and partial least square discriminant analysis (PLS-DA) were applied for the classification and differentiation of spectral data of filtrate samples of healthy and different stages of liver carcinoma. The significant SERS bands appeared at 655, 908, 955, 1127, 1250, and 1323 cm<sup>−1</sup> are directly associated with the progression of liver carcinoma disease.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 6","pages":"3031 - 3041"},"PeriodicalIF":4.3,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164429","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

Boron Nitride and Graphene Heterostructures Modeled by Quantum Graphs 量子图模拟氮化硼和石墨烯异质结构

IF 4.3 4区物理与天体物理

Plasmonics Pub Date : 2025-04-03 DOI: 10.1007/s11468-025-02861-4

César R. de Oliveira, Osmar N. Souza, Vinicius L. Rocha

{"title":"Boron Nitride and Graphene Heterostructures Modeled by Quantum Graphs","authors":"César R. de Oliveira, Osmar N. Souza, Vinicius L. Rocha","doi":"10.1007/s11468-025-02861-4","DOIUrl":"10.1007/s11468-025-02861-4","url":null,"abstract":"<div><p>We use the theory of periodic quantum graphs to model stackings of hexagonal materials with two and three layers, such as hexagonal boron nitride (hBN) and graphene, with pairs of parameters <span>(delta _N)</span> and <span>(delta _B)</span> associated with the types of distinct atoms located at their vertices. We analyze equal bilayers in <i>AA</i> and <span>(AA')</span> stackings, as well as heterostructures and “sandwiches” of graphene between layers of hBN. In each of these configurations, we use the Schrödinger operator on the edges, with their respective boundary conditions, and introduce a weak interaction parameter <span>(t_0)</span> between the connections of different layers. We analytically study the dispersion relations obtained in these models with respect to the existence of conic and parabolic touches and confirm, in a rigorous way, known results in the physics literature: hBN bilayers do not have Dirac cones, but in the <i>AA</i> stacking, we identify parabolic touches. In mixed bilayers, the inclusion of an hBN layer over graphene can induce a gap, the amplitude of which depends on <span>(t_0)</span> and <span>(delta _N)</span>. In the “sandwiches,” we find that graphene between two layers of hBN reduces the width of the spectral gap, while in the graphene-hBN-graphene configuration, some of the graphene cone persists, but gaps open in other Dirac cones.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 8","pages":"5805 - 5818"},"PeriodicalIF":4.3,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923140","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 and Optimization of a Hybrid Plasmonic Sensor Based on Microring Resonators for Refractive Index Sensing 基于微环谐振腔的混合等离子体传感器的设计与优化

IF 3.3 4区物理与天体物理

Plasmonics Pub Date : 2025-04-03 DOI: 10.1007/s11468-025-02944-2

Mostafa Dehghan, Mohammadbagher Mohammadnezhad, Abdollah Hassanzadeh

{"title":"Design and Optimization of a Hybrid Plasmonic Sensor Based on Microring Resonators for Refractive Index Sensing","authors":"Mostafa Dehghan, Mohammadbagher Mohammadnezhad, Abdollah Hassanzadeh","doi":"10.1007/s11468-025-02944-2","DOIUrl":"10.1007/s11468-025-02944-2","url":null,"abstract":"<div><p>Hybrid plasmonic structures offer a promising platform for highly sensitive and compact optical sensing applications. In this paper, we propose and optimize a simple but powerful hybrid plasmonic refractive index sensor that combines a silicon microring resonator with gold plasmonic structures to achieve high quality factor and low loss. Light coupling into the ring resonator is obtained through a dielectric waveguide via evanescent field coupling. Numerical simulations of the proposed structure are performed using finite element method (FEM) implemented in COMSOL Multiphysics (wave optics module). Through numerical simulations, the structural parameters of the sensor are systematically optimized to obtain the optimal performance. The optimized design achieves a relatively high sensitivity of 36 nm/RIU, with an ultra-high quality factor (Q) of 5.626 × 10<sup>3</sup> and an excellent figure of merit (FoM) of 131. The high Q factor of the proposed sensor indicates a better limit of detection (LOD) and improved signal-to-noise ratio (SNR), making it suitable for high-precision applications. We believe this hybrid sensor demonstrates significant potential for applications in industrial and biomedical sensing due to its simple geometry, high precision, and efficient operation.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 5","pages":"2997 - 3005"},"PeriodicalIF":3.3,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143904729","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-Sensitivity Zinc-Based Surface Plasmon Resonance Biosensor for SARS-CoV-2 Detection Using Kretschmann Configuration 基于Kretschmann结构的高灵敏度锌基表面等离子共振生物传感器检测SARS-CoV-2

IF 4.3 4区物理与天体物理

Plasmonics Pub Date : 2025-03-31 DOI: 10.1007/s11468-025-02939-z

Snehanagasri Malakalapalli, Chella Santhosh, Yesudasu Vasimalla, Ramachandran Balaji, Suman Maloji, Santosh Kumar

{"title":"High-Sensitivity Zinc-Based Surface Plasmon Resonance Biosensor for SARS-CoV-2 Detection Using Kretschmann Configuration","authors":"Snehanagasri Malakalapalli, Chella Santhosh, Yesudasu Vasimalla, Ramachandran Balaji, Suman Maloji, Santosh Kumar","doi":"10.1007/s11468-025-02939-z","DOIUrl":"10.1007/s11468-025-02939-z","url":null,"abstract":"<div><p>The virus that causes COVID-19, severe acute respiratory syndrome Coronavirus-2 (SARS-CoV-2), infects the body by latching onto Angiotensin-Converting Enzyme 2 (ACE2) receptors, primarily in the lungs, triggering inflammation, pneumonia, and breathing problems. The virus can also damage other organs, including the heart, kidneys, and brain, resulting in complications like blood clots and organ damage. In extreme cases, an overactive immune reaction, called a cytokine storm, can amplify tissue and organ damage. For that, five different structures, using the defined layers, are studied in this work to compare the performance and to study how the COVID-19 virus influences the SPR sensor proposed. Using the angular interrogation method, we numerically evaluate the performance at the wavelength of 633 nm. This study demonstrates a new sulfide material-based structure for SARS-CoV-2 detection using a prism-based SPR nano-biosensor. In which case, this is a designed configuration inspired by the Kretschmann configuration, silver, zinc telluride, zinc sulfide layer, 2D materials of black phosphorus and graphene, and a sensing medium that takes advantage of surface plasmon excitations and evanescent waves. Through the analysis of SARS-CoV-2 samples, the proposed structure reached a maximum sensitivity of 474.08°/RIU, a QF of 131.00 RIU⁻<sup>1</sup>, and a DA of 0.6550, which is a significant improvement over the existing methods.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 8","pages":"5793 - 5804"},"PeriodicalIF":4.3,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923355","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