Plasmonics最新文献_第7页

Work Function, Electrostatic Force Microscopy, Tunable Photoluminescence of Gold Nanoparticles, and Plasmonic Interaction of Gold Nanoparticles/Rhodamine 6G Nanocomposite 金纳米粒子的功函数、静电力显微镜、可调光致发光以及金纳米粒子/罗丹明 6G 纳米复合材料的等离子相互作用

IF 3.3 4区物理与天体物理

Plasmonics Pub Date : 2024-08-15 DOI: 10.1007/s11468-024-02484-1

Ishaq Musa, Jamal Ghabboun

{"title":"Work Function, Electrostatic Force Microscopy, Tunable Photoluminescence of Gold Nanoparticles, and Plasmonic Interaction of Gold Nanoparticles/Rhodamine 6G Nanocomposite","authors":"Ishaq Musa, Jamal Ghabboun","doi":"10.1007/s11468-024-02484-1","DOIUrl":"10.1007/s11468-024-02484-1","url":null,"abstract":"<div><p>The work function and tunable photoluminescence of gold nanoparticles (AuNPs) and their interaction with Rhodamine 6G (R6G) molecules were characterized using scanning probe microscopy (SPM) and spectroscopy techniques. Atomic Force Microscopy (AFM) and Kelvin Probe Force Microscopy (KPFM) were employed to analyze the surface roughness and work function of AuNPs ranging in size from 3 to 21 nm. According to measurements with Kelvin Probe Force Microscopy (KPFM), the work functions for AuNPs are approximately 5.17 eV, 5.14 eV, and 5.13 eV for the range of sizes of nanoparticles. It was observed that larger AuNPs have increased surface roughness and consequently decreased work function. Additionally, phase imaging and Electrostatic Force Microscopy (EFM) were utilized to further investigate the AuNPs/R6G composites, revealing their surface nanoscale distribution and their electrical properties. In addition, the tunable photoluminescence of AuNPs based on excitation wavelength was studied, showing that as the excitation wavelength increases, the photoluminescence shifts to higher emission wavelengths and the peak intensity increases. Furthermore, UV–visible absorption and photoluminescence spectroscopy were employed to investigate the optical properties of AuNPs added to Rhodamine 6G molecules, revealing an enhancement in absorption and a reduction in photoluminescence.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 5","pages":"2531 - 2540"},"PeriodicalIF":3.3,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226840","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

Generalized Fiber-Optic Surface-Plasmon-Resonance Modeling Through Ray-Tracing 通过光线跟踪进行广义光纤表面等离子共振建模

IF 3.3 4区物理与天体物理

Plasmonics Pub Date : 2024-08-15 DOI: 10.1007/s11468-024-02474-3

Wouter Vandezande, Annelies Dillen, Jeroen Lammertyn, Maarten B. J. Roeffaers

{"title":"Generalized Fiber-Optic Surface-Plasmon-Resonance Modeling Through Ray-Tracing","authors":"Wouter Vandezande, Annelies Dillen, Jeroen Lammertyn, Maarten B. J. Roeffaers","doi":"10.1007/s11468-024-02474-3","DOIUrl":"10.1007/s11468-024-02474-3","url":null,"abstract":"<div><p>Fiber-optic surface plasmon resonance (FO-SPR) sensors look at the absorbance of reflected light to measure changes in refractive index (RI). FO-SPR sensor modeling is essential in understanding the underlying processes that induce such RI changes. Despite two types of rays, i.e., skew and meridional rays, an FO-SPR model has been developed in the literature that only considers meridional rays. This meridional model has proven its applicability in several publications using pass-through FO-SPR sensors. However, this simplified FO-SPR model fails to simulate back-reflecting FO-SPR sensors properly, where diffuse light is delivered and collected at the same optical fiber end. Here, it is shown that a generalized FO-SPR model that includes skew rays more accurately simulates the spectra obtained in back-reflecting FO-SPR sensors. With the changing incidence plane of a skew ray in mind, the generalized FO-SPR model was built with three-dimensional polarization ray-tracing calculus. The necessary angular ray distribution of the back-reflecting FO-SPR sensor was acquired by a Monte Carlo three-dimensional ray-tracing simulation. Next, the effect of including optical components and deviations and model optimization by adjusting the gold relative permittivity and thickness was evaluated. The generalized model simulated FO-SPR absorbances with smaller widths than the experimental FO-SPR absorbances. The cause of this difference in absorbance is unclear and demands more research. Nevertheless, the skew ray incorporation in the generalized FO-SPR model enabled its application to a greater diversity of FO-SPR sensors compared to the simplified FO-SPR model both as a predictive and an analytic tool in the development of FO-SPR sensors.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 5","pages":"2541 - 2554"},"PeriodicalIF":3.3,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213477","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

Optical-Based Aqueous Solution Detection by Graphene Metasurface Surface Plasmon Resonance Biosensor with Behavior Prediction Using Polynomial Regression 利用多项式回归进行行为预测的石墨烯金属表面表面等离子体共振生物传感器的水溶液光学检测技术

IF 3.3 4区物理与天体物理

Plasmonics Pub Date : 2024-08-14 DOI: 10.1007/s11468-024-02464-5

Jacob Wekalao, Shobhit K. Patel, Sana Ben Khalifa, Saleh Chebaane, Ammar Armghan, Taoufik Saidani

{"title":"Optical-Based Aqueous Solution Detection by Graphene Metasurface Surface Plasmon Resonance Biosensor with Behavior Prediction Using Polynomial Regression","authors":"Jacob Wekalao, Shobhit K. Patel, Sana Ben Khalifa, Saleh Chebaane, Ammar Armghan, Taoufik Saidani","doi":"10.1007/s11468-024-02464-5","DOIUrl":"10.1007/s11468-024-02464-5","url":null,"abstract":"<div><p>Aqueous solutions are fundamental to a wide range of chemical and biological processes, serving as a critical medium for both natural phenomena and technological advancements. This study presents the design and modelling of a metasurface-based biosensor for aqueous solution detection. The sensor architecture comprises multiple resonators deposited on a silicon dioxide substrate, with materials selected for their specific optical properties. Finite element analysis was employed to simulate the sensor’s signal transduction mechanisms. The optimized design exhibits a sensitivity of 500 GHzRIU<sup>−1</sup> and a figure of merit of 10.638 RIU<sup>−1</sup>. Comprehensive characterization of the sensor’s performance includes evaluation of its detection limit, dynamic range, and signal-to-noise ratio, all of which demonstrate superior target detection accuracy. The sensor’s versatility is further illustrated through its application in encoding operations, leveraging on the transmittance values to perform logic functions. A polynomial regression model was developed to interpolate absorption values at intermediate frequencies, achieving an <i>R</i><sup>2</sup> value of 1.0, indicating perfect correlation between predicted and simulated data. These results suggest significant potential for the sensor’s application in high-precision biomolecular detection across various fields, including biomedical diagnostics and environmental monitoring.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 5","pages":"2509 - 2530"},"PeriodicalIF":3.3,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213476","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

Graphene Metasurfaces-Based Surface Plasmon Resonance Biosensor for Virus Detection with Sensitivity Enhancement Using Perovskite Materials 基于石墨烯金属表面的表面等离子体共振生物传感器，利用 Perovskite 材料提高病毒检测灵敏度

IF 3.3 4区物理与天体物理

Plasmonics Pub Date : 2024-08-14 DOI: 10.1007/s11468-024-02436-9

Jacob Wekalao, Shobhit K. Patel, Fahad Ahmed Al-zahrani

{"title":"Graphene Metasurfaces-Based Surface Plasmon Resonance Biosensor for Virus Detection with Sensitivity Enhancement Using Perovskite Materials","authors":"Jacob Wekalao, Shobhit K. Patel, Fahad Ahmed Al-zahrani","doi":"10.1007/s11468-024-02436-9","DOIUrl":"10.1007/s11468-024-02436-9","url":null,"abstract":"<div><p>This paper introduces a biosensor based on graphene metasurfaces, designed for virus detection in the terahertz (THz) regime. The proposed sensor comprises four resonators arranged in a semicircular configuration, strategically engineered to achieve enhanced sensitivity and overall performance. Computational simulations using COMSOL Multiphysics version 6.2 were employed to optimize geometric parameters and analyze the sensor’s behavior. By integrating Au, SrTiO₃, graphene, and black phosphorus, the biosensor exhibits remarkable sensitivity to refractive index (RI) variations associated with various viruses. The maximum sensitivity demonstrated by the sensor is 4556 GHzRIU<sup>−1</sup>. Other remarkable performance metrics include a figure of merit of 8.499 RIU<sup>−1</sup>, a quality factor of 1.131, and a minimum detection limit of 0.149. Electric field distribution analysis reveals optimal absorption at 0.4 THz. Furthermore, the biosensor demonstrates the potential for 2-bit encoding applications. Compared to existing designs, the proposed biosensor offers significantly higher sensitivity for virus detection. The integration of advanced nanomaterials and metasurface design principles presents a promising avenue for rapid, label-free virus sensing, with potential applications in healthcare and biosecurity.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 5","pages":"2493 - 2508"},"PeriodicalIF":3.3,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226841","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

Biosensor Performance Signature Enhancement with Silver-MXene-Graphene for Brain Tumor Diagnosis Through the Employment of Surface Plasmon Resonance 利用表面等离子体共振增强银-MXene-石墨烯的生物传感器性能特征，用于脑肿瘤诊断

IF 3.3 4区物理与天体物理

Plasmonics Pub Date : 2024-08-14 DOI: 10.1007/s11468-024-02483-2

Anurag Upadhyay, Shivam Singh, Bhargavi Chaudhary, Rajeev Kumar, Prem P. Singh, M. G. Daher, Priyanka Bhardwaj, Mahmoud M. A. Eid, Ahmed Nabih Zaki Rashed

{"title":"Biosensor Performance Signature Enhancement with Silver-MXene-Graphene for Brain Tumor Diagnosis Through the Employment of Surface Plasmon Resonance","authors":"Anurag Upadhyay, Shivam Singh, Bhargavi Chaudhary, Rajeev Kumar, Prem P. Singh, M. G. Daher, Priyanka Bhardwaj, Mahmoud M. A. Eid, Ahmed Nabih Zaki Rashed","doi":"10.1007/s11468-024-02483-2","DOIUrl":"10.1007/s11468-024-02483-2","url":null,"abstract":"<div><p>In this work, we present a surface plasmon resonance (SPR) based photonic biosensor for the detection and differentiation of healthy and infected brain tissues, including lesions, tumors, and malignant tissues. The biosensor design incorporates a BK-7 prism, silver (Ag), MXene (Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>), and graphene. Silver serves as the plasmonic material, coated on the prism’s flat surface to enhance plasmon generation, assisted by MXene and graphene for improved sensing performance. Extensive analysis and investigation have been conducted to leverage the unique characteristics of graphene and MXene in the design of this highly sensitive biosensor. The biosensor’s performance has been evaluated in terms of sensitivity, with remarkable results. The proposed biosensor demonstrates an exceptionally high sensitivity (S) of 240 <span>(^circ)</span>/RIU, detection accuracy of 0.1984 <span>(^circ)</span>, and figure of merit (FoM) of 47.81/RIU. These findings confirm the biosensor’s reliability and effectiveness in accurately identifying various brain tumor tissues.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 5","pages":"2481 - 2492"},"PeriodicalIF":3.3,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213480","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 a Gold-Nanowires Embedded PCF for Magnetic Field and Temperature Sensing 设计用于磁场和温度传感的金纳米线嵌入式 PCF

IF 3.3 4区物理与天体物理

Plasmonics Pub Date : 2024-08-13 DOI: 10.1007/s11468-024-02477-0

Jiayuan Liu, Jie Dong, Shanglin Hou, Qingmin Liu, Caijian Xie, Gang Wu, Zuyong Yan

{"title":"Design of a Gold-Nanowires Embedded PCF for Magnetic Field and Temperature Sensing","authors":"Jiayuan Liu, Jie Dong, Shanglin Hou, Qingmin Liu, Caijian Xie, Gang Wu, Zuyong Yan","doi":"10.1007/s11468-024-02477-0","DOIUrl":"10.1007/s11468-024-02477-0","url":null,"abstract":"<div><p>A photonic crystal fiber (PCF) sensor comprising two sensing channels for magnetic field and temperature measurements is proposed. In order to detect the magnetic field and temperature effectively, the two sensing channels of the proposed sensor are embedded with gold nanowires and filled with Polydimethylsiloxane (PDMS) and magnetic fluid (MF), respectively. Additionally, this configuration simplifies the fabrication process and eliminates some problems when plasmonic material is deposited in the inner or outer surface of PCF. The performance of the proposed sensor is numerically investigated by the finite element method (FEM). The optimal structural parameters have been determined by analyzing the loss curves and energy of the y-polarized core mode ultimately. Furthermore, the sensitivity is not particularly sensitive to the sizes of the cladding air holes, indicating the sensor has better manufacturing tolerance. The simulation results reveal the maximum magnetic field sensitivity is 238.4 pm/Oe at the magnetic field of 30–300 Oe, and temperature sensitivity is − 1103.6 pm/°C at the temperature of − 20–40 °C. The proposed sensor can detect sub-zero temperatures with a high magnetic field sensitivity. Given its low fabrication complexity and extensive detection range, this PCF-SPR sensor has potential applications in magnetic environments at low temperatures, such as geological exploration, marine environment monitoring, and so on.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 5","pages":"2457 - 2466"},"PeriodicalIF":3.3,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213512","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

Labyrinthine Spoof SPP Multi-band Bandpass Filters 迷宫式欺骗 SPP 多波段带通滤波器

IF 3.3 4区物理与天体物理

Plasmonics Pub Date : 2024-08-13 DOI: 10.1007/s11468-024-02479-y

Miao Zhang, Zhixia Xu, Shiqiang Fu, Weiye Zhong, Hai Lan

{"title":"Labyrinthine Spoof SPP Multi-band Bandpass Filters","authors":"Miao Zhang, Zhixia Xu, Shiqiang Fu, Weiye Zhong, Hai Lan","doi":"10.1007/s11468-024-02479-y","DOIUrl":"10.1007/s11468-024-02479-y","url":null,"abstract":"<div><p>The surface plasmon polariton (SPP) is an electromagnetic wave mode that occurs at the interface of a metal and a dielectric material. It possesses unique properties such as enhancing the strength of the electromagnetic field at the metal surface, achieving sub-wavelength focusing of light waves, and exhibiting low loss. Due to these characteristics, SPP holds great promise in various applications including super-resolution imaging, terahertz technology, biosensing, and optical communication. This paper proposes two Spoof SPP-based tri-band bandpass filters that replace the conventional sawtooth cell structure with a miniaturized labyrinth resonator structure. Upon investigating the dispersion characteristics of the resonators, we found that both resonator unit 1 and resonator unit 2 exhibit three modes, resulting in three notch points for each filter. Unlike most SPP-based structures, our design features a compact structure fed by a co-planar waveguide (CPW) without an added ground at the bottom, thereby reducing losses and improving efficiency. To achieve a smoother transition from CPW to the transmission structure, we utilize a segment of microstrip line structure synthesized by a logarithmic function. Both filters are of the same size, with dimensions totaling 192 mm × 42 mm. Based on our study, we have designed two filters with multiple notch points and have obtained good agreement between the simulation results and the actual test results.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 5","pages":"2467 - 2480"},"PeriodicalIF":3.3,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213479","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

Plasmonic Metamaterial’s Light Trapping Enhancement of Ultrathin PbS-CQD Solar Thermal PV Cells 等离子超材料对超薄 PbS-CQD 太阳能光热光伏电池光捕获的增强作用

IF 3.3 4区物理与天体物理

Plasmonics Pub Date : 2024-08-13 DOI: 10.1007/s11468-024-02458-3

Oussama Baitiche, Fathi Bendelala, Ali Cheknane, Filippo Costa, Hikmat S. Hilal, Jean-Michel Nunzi, Khadidja Younes

{"title":"Plasmonic Metamaterial’s Light Trapping Enhancement of Ultrathin PbS-CQD Solar Thermal PV Cells","authors":"Oussama Baitiche, Fathi Bendelala, Ali Cheknane, Filippo Costa, Hikmat S. Hilal, Jean-Michel Nunzi, Khadidja Younes","doi":"10.1007/s11468-024-02458-3","DOIUrl":"10.1007/s11468-024-02458-3","url":null,"abstract":"<div><p>Enhancing photon absorptance in ultrathin solar/thermophotovoltaic (STPV) cells is crucial for low-cost highly efficient cells. A complete study of power conversion enhancement, in a proposed ultrathin STPV cell, is presented here. It involves lead sulfide colloidal quantum dots (PbS-CQDs), a silver (Ag)-nano-pyramid design, aluminum nitride (AlN) crossed prisms as front texturization, with embedded Ag nanospheres, and a tantalum (Ta) film as a back reflector. By combining the three mechanisms of surface plasmon polariton (SPP), localized plasmons (LSPR), and magnetic polariton (MP) in the same structure, photon absorptance in the active PbS-CQDs layer is greatly improved. The suggested structure attained a highly active absorptance of over 80%, covering visible and near-infrared (0.30–1.77 µm). The short circuit current density is also evaluated under AM 1.5 solar illumination and various blackbody temperatures (<i>T</i><sub>B</sub>), with values of 48.90 mA cm<sup>−2</sup> and 6.93 mA cm<sup>−2</sup>, respectively, corresponding to unprecedented power conversion efficiencies (PCEs) of 20.20% and 15.58%. The effects of metamaterial light management on PCE enhancement are discussed. Collectively, the findings show that the proposed hybrid cell is potentially useful in high-performance hybrid thermal and solar cells.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 5","pages":"2443 - 2455"},"PeriodicalIF":3.3,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213478","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

Dual-core Photonic Crystal Fiber Temperature and Humidity Sensor Based on PDMS and PVA 基于 PDMS 和 PVA 的双核光子晶体光纤温湿度传感器

IF 3.3 4区物理与天体物理

Plasmonics Pub Date : 2024-08-12 DOI: 10.1007/s11468-024-02480-5

Mingshi Song, Xili Jing, Zhiyong Yin, Heng Zhang, Jiaxin Li, Tianli Huo

引用次数: 0

Borophene and Phase Change Material-based Integrated Multilayered High-Sensitive Refractive Index Sensor for Infrared Frequency Spectrum 基于硼吩和相变材料的集成多层高灵敏红外频谱折射率传感器

IF 3.3 4区物理与天体物理

Plasmonics Pub Date : 2024-08-12 DOI: 10.1007/s11468-024-02473-4

Zen Sbeah, Vishal Sorathiya, Diksha Chauhan, Abdullah Alwabli, Amar Y. Jaffar, Ahmad Alghamdi, Osama S. Faragallah

{"title":"Borophene and Phase Change Material-based Integrated Multilayered High-Sensitive Refractive Index Sensor for Infrared Frequency Spectrum","authors":"Zen Sbeah, Vishal Sorathiya, Diksha Chauhan, Abdullah Alwabli, Amar Y. Jaffar, Ahmad Alghamdi, Osama S. Faragallah","doi":"10.1007/s11468-024-02473-4","DOIUrl":"10.1007/s11468-024-02473-4","url":null,"abstract":"<div><p>This work presents the design and numerical simulation of a multilayered surface plasmon resonance (SPR) sensor incorporating borophene and germanium (Ge)-antimony (Sb) telluride (Te) (GST) as active plasmonic materials. The sensor design is modelled in two dimensions (2D) and exhibits a broad refractive index detection range, from 1 to 2.5 µm/RIU. The proposed design utilizes a top-analyte configuration, where the target analyte is placed directly on the sensor surface for interaction. Various metals like Ag (silver), Au (gold), Al (aluminium), and Cu (copper) are considered for investigation of the influence of the middle metal layer on the overall optical response. The GST layer is modelled as a two-state material, accounting for its amorphous (aGST) and crystalline (cGST) phases. It allows for exploring the sensor’s tunability based on the GST material’s phase state. Furthermore, comprehensive optimization and validation processes are conducted for various device parameters, including layer thicknesses, widths, and the type of metal employed. These optimizations aim to achieve optimal sensor performance regarding sensitivity and overall functionality. Notably, the simulations reveal distinct bandwidths and resonant regions for both aGST and cGST phases of the GST layer. In conclusion, this proposed sensor provides potential application in biomolecular and chemical testing due to its tunable characteristics and broad refractive index detection range.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 5","pages":"2399 - 2417"},"PeriodicalIF":3.3,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141935858","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