Plasmonics最新文献

{"title":"Design of Simultaneous Refractive Index Sensor Across Multi-Photonic Bandgaps Using Tamm Plasmon Modes","authors":"Anup Kumar Sharma,&nbsp;Amod Kumar Srivastava,&nbsp;Partha Sona Maji,&nbsp;Samir Kumar","doi":"10.1007/s11468-024-02454-7","DOIUrl":"10.1007/s11468-024-02454-7","url":null,"abstract":"<div><p>In this work, a refractive index sensor based on Tamm plasmons mode is proposed, capable of concurrent functionality across multiple photonic bandgaps. The proposed sensor structure consists of an analyte cavity sandwiched between a one-dimensional photonic crystal of SiO₂/TiO₂ and a thin metal film. Multiple photonic bandgaps are observed in multilayer structures composed of SiO₂/TiO₂ layers, each with a thickness of 150 nm. Tamm plasmon resonances have been demonstrated in various photonic bandgaps, enabling the detection of subtle changes in refractive index within the cavity region. Simulation studies utilizing the transfer matrix method (TMM) have been conducted to evaluate the performance of the proposed design. Several sensor metrics including sensitivity, full width at half-maximum, quality factor, and detection accuracy were assessed for evaluating sensor performance. The functioning principle of this optical sensor relies on altering the refractive index of the analyte, resulting in a shift in either the transmission or reflection spectrum. The study reveals that the resonance wavelength demonstrates a linear variation with the change in the analyte’s refractive index. The results demonstrate that the one-dimensional photonic crystal sensor based on multiple Tamm plasmons exhibits high quality factor and enhanced detection accuracy and is well-suited for detecting minute changes in analyte refractive index. Tamm resonance-based sensors, notable for their main advantage of prism-free coupling, offer a compelling alternative to other optical sensors like surface plasmon resonance-based sensors.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 4","pages":"2255 - 2265"},"PeriodicalIF":3.3,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141885522","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}

{"title":"Development of a Multi-Band High-Sensitivity Polarization-Independent Absorber: A Biosensor for Simultaneous Detection of Multiple Cancer Biomarkers","authors":"Yousef Rafighirani,&nbsp;Javad Javidan,&nbsp;Hamid Heidarzadeh","doi":"10.1007/s11468-024-02451-w","DOIUrl":"10.1007/s11468-024-02451-w","url":null,"abstract":"<div><p>Traditionally, biosensors are indeed designed to detect one specific analyte. However, recent advancements in biosensor technology have enabled the development of multiplexed biosensors capable of detecting multiple analytes simultaneously. This work proposes the detection of cervical cancer (HeLa cells), skin cancer (basal cells), and breast cancer (MDA-MB-231 cells) by analyzing the refractive index of these cells. This analysis is based on comparing the absorption spectra of healthy and cancerous cells. The proposed structure comprises three layers: a copper layer with a conductivity of 5.18 × /m, a silicon dioxide layer with a refractive index of 3.9 containing a cross-shaped hole with a depth of 3.5 µm, and a graphene layer. For the basal cell biosensor, the graphene layer is assigned a chemical potential of 0.7 eV; for the HeLa cell biosensor, it is 0.8 eV, and for the MDA-MB-231 cell biosensor, it is 0.9 eV. The absorption output extracted from CST software yields the highest sensitivity values. For basal cell detection, the highest sensitivity (7100) and a figure of merit (FOM) of 22 are achieved in mode B. For HeLa cell detection, a sensitivity of 5250 and FOM of 28 are attained in mode B. Finally, for MDA-MB-231 detection, a sensitivity of 5357 and FOM of 23 are achieved in mode B. This innovation is particularly beneficial in complex biological samples where the presence of multiple analytes may provide more comprehensive diagnostic information. The proposed multi-band high-sensitivity polarization-independent absorber serves as a notable example of this trend, demonstrating the potential for biosensors to evolve toward simultaneous detection of multianalyte targets, such as different types of cancer cells.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 4","pages":"2245 - 2253"},"PeriodicalIF":3.3,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141885652","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}

{"title":"An Investigation of Low-Loss Sodium Plasmon Waveguides Based on FEM","authors":"Xiaodi Yang,&nbsp;Shuaiqi Ma,&nbsp;Da Teng","doi":"10.1007/s11468-024-02457-4","DOIUrl":"10.1007/s11468-024-02457-4","url":null,"abstract":"<div><p>A sodium-based hybrid plasmonic waveguide consists of the Na film and wedge-shape Si ridge waveguide is designed. The overall performance of the waveguide and its application as a nano-laser are studied by using the finite element method (FEM) with emphasis on effective index, propagation length, normalized mode area, figure of merit, confinement factor, gain threshold, and Purcell factor. The results point out that the designed waveguide exhibits the strong field confinement ability as well as high figure of merit. Particularly, a large Purcell factor of 536 and an ultra-low gain threshold of 0.066 μm⁻¹ could be concurrently obtained, which is far smaller than that of conventional Ag-based plasmonic waveguides. The proposed waveguide could potentially advance the utilization of sodium-based plasmonic waveguides in the field of nano-laser, resonator, modulator, and other nanophotonic devices.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 4","pages":"2237 - 2244"},"PeriodicalIF":3.3,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141865152","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}

{"title":"A Framework for Designing Efficient Eco-Friendly Broadband GeSn/SnS Photodetector Based on Light Trapping Engineering","authors":"H. Ferhati,&nbsp;F. Djeffal","doi":"10.1007/s11468-024-02440-z","DOIUrl":"10.1007/s11468-024-02440-z","url":null,"abstract":"<div><p>A multispectral photoresponse feature of a self-powered photodetector device is quickly becoming a key technology to address the scaling challenges in emerging multifunctional optoelectronic systems. The heterostructure of different materials has opened new pathways to design broadband self-driven photoresponse using a single device. In this work, a new multispectral photodetector based on SnS/GeSn heterostructure with optimized gold nanoparticles is proposed. Moreover, broadband photodetector performances are improved by using a new design framework based on coupling particle swarm optimization approach and plasmonic effects. Numerical models based on the finite difference time domain method are carried out. A broadband photodetection is achieved in a single SnS/GeSn heterostructured photodetector with optimized surface gold nanoparticles, with a high on/off ratio of 160 dB, improved responsivity of 8.5 A/W and specific detectivity of over 5 × 10¹² Jones in the self-powered mode. Therefore, the proposed design framework based on the strategic combination between SnS/GeSn heterostructure and optimized gold nanoparticles array provides new paths and efficient strategy to enhance the optoelectronic performance of broadband photodetectors by exploiting the light trapping engineering combined with band-gap tuning aspects.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 4","pages":"2225 - 2235"},"PeriodicalIF":3.3,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141865296","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}

{"title":"Design of Encoded and Tunable Graphene-Gold Metasurface-Based Surface Plasmon Resonance Sensors for Glucose Detection in the Terahertz Regime","authors":"N. K. Anushkannan,&nbsp;Jacob Wekalao,&nbsp;Shobhit K. Patel,&nbsp;Fahad Ahmed Al-Zahrani","doi":"10.1007/s11468-024-02452-9","DOIUrl":"10.1007/s11468-024-02452-9","url":null,"abstract":"<div><p>This study presents the design, optimization, and evaluation of a highly sensitive terahertz refractive index sensor utilizing graphene metasurfaces for glucose detection in urine samples. The proposed sensor incorporates circular, square, and triangular resonator structures composed of graphene, gold, and silver to enhance plasmonic properties and sensing performance. Comprehensive parametric analysis and optimization were conducted using COMSOL Multiphysics simulations. The sensor demonstrates excellent performance characteristics, including a high sensitivity of 1000 GHzRIU⁻¹ and quality factors ranging from 100.2 to 100.5. To further improve accuracy and reduce simulation time, an XGBoost Regressor model was integrated for predicting sensor behaviour across various parameters. The model achieved <i>R</i>² scores consistently at or near 1, validating the robustness of the sensor design. Comparative analysis with existing literature highlights the superior sensitivity, figure of merit, and quality factor of the proposed sensor. This work contributes to advancing non-invasive glucose monitoring technologies and demonstrates the potential of machine learning integration in optimizing metamaterial-based sensors for biomedical applications.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"19 6","pages":"2827 - 2846"},"PeriodicalIF":3.3,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141865291","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}

{"title":"Synthesis and Characterization of Double Core-shell Au@Ag@Au Nanoparticles by Pulsed Laser Ablation in Liquid and Analysis of Their Antibacterial Properties","authors":"Ahmed A. Aktafa,&nbsp;Uday M. Nayef,&nbsp;Majid S. Jabir","doi":"10.1007/s11468-024-02450-x","DOIUrl":"10.1007/s11468-024-02450-x","url":null,"abstract":"<div><p>Our research involved the synthesis of a double core-shell structure using gold and silver NPs. The core material used was gold. The initial shell had a silver coating, while the subsequent shell was encased in gold. The wavelength of the laser was 1046 nm and was employed, along with 250 pulses at a frequency of 1 Hz, delivering an energy of 500 mJ into 5 ml of deionized water; the focal length of the lens was 12 cm. A comparison was made between the double core-shell construction consisting of individual silver (Ag) and gold (Au) nanoparticles and the single core-shell structure. Various tests were conducted on the samples, including XRD, TEM, UV-visible, FTIR, and zeta potential, to analyze their characteristics. Additionally, the energy gap was determined for each sample. Next, the study examined the impact of particles with a double core-shell and single particles on <i>S. aureus</i> and <i>E. coli</i> bacteria. The findings revealed that a double coating exhibited exceptional effectiveness in eliminating bacterial cells when compared to single particles and a single core-shell. This was demonstrated through the implementation of a zone of inhibition and antibiofilm activity. They were able to verify the existence of the two metal substances (Au and Ag) in each and every sample by using X-ray diffraction (XRD). TEM images clearly depict the formation of the core-shell system. Also presented were TEM images of colloidal particles made of gold and silver, which were smaller than 10 nm in size. The formation of certain nanoparticles resulted in a shift in the peak wavelength, confirming the occurrence of a superficial overlap. The energy transition was calculated using the Tauc relation, with specific values for the different nanoparticles involved. Based on the zeta potential, it is observed that the stability of Ag NPs is greater than that of Au NPs. Additionally, the core double-shell structure formed is found to be less stable compared to the individual Au NPs and Ag NPs. During the ICP-MS analysis, it was observed that the amount of the double shells reduced in comparison to both the individual shell and the individual gold and silver particles. The particles were linked to each other to produce the shells. The current study suggested the potential role of Au@Ag@Au NPs for antibacterial applications in the future.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 4","pages":"2209 - 2223"},"PeriodicalIF":3.3,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141865290","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}

{"title":"Resonant Excitation of Terahertz Surface Plasmons by Optical Rectification Over a Rippled Graphene Surface","authors":"Rohit Kumar Srivastav","doi":"10.1007/s11468-024-02437-8","DOIUrl":"10.1007/s11468-024-02437-8","url":null,"abstract":"<div><p>Resonant excitation of terahertz surface plasmons by optical rectification over rippled graphene surface, deposited on <span>(text {SiO}_{2})</span> using a mode conversion of amplitude modulated p-polarized laser beam. A pump surface plasmons exert a ponderomotive force on the free electrons of the graphene surface and impart a linear oscillatory velocity at the modulation frequency. The current density develops by coupling the linear oscillatory velocity with modulated electron density and resonantly excites the terahertz surface plasmons at the modulation frequency. The amplitude of terahertz surface plasmons can be tunable by Fermi energy of graphene surface <span>(text {E}_text {F})</span>. There is a possibility that the current study will be used to utilize THz detectors and sensors.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 4","pages":"2181 - 2185"},"PeriodicalIF":3.3,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141865293","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}

{"title":"Self-Referential Plasmonic Refractive Index Sensor by Square Hole Array and Gold Film Coupling Structure","authors":"Xijun Rao,&nbsp;Huirong Zhu,&nbsp;Xiangxian Wang,&nbsp;Yizhen Chen,&nbsp;Yunping Qi,&nbsp;Hua Yang","doi":"10.1007/s11468-024-02420-3","DOIUrl":"10.1007/s11468-024-02420-3","url":null,"abstract":"<div><p>A surface plasmonic refractive index (RI) sensor is proposed based on a square hole array and gold film coupling structure. This sensor enables high-sensitivity sensing with self-reference characteristics in gas and liquid environments. The reflectance spectrum and electric fields are calculated using a finite-difference time-domain (FDTD) method. Meanwhile, the cases of rotating square-hole arrays and changing the incident light of the polarization direction are discussed, respectively. The results show that the varying polarization direction of the incident light does not affect the reflectance spectrum of the composite structure. Rotating the array of square holes further enhances the signal strength of the resonance modes excited by the proposed sensor. The sensor has two resonance modes with different functions: one for self-reference and the other for sensing. In the sensing mode, the sensor sensitivity is 1037 and 1063 nm/RIU in gas and liquid environments, respectively; whereas in self-reference mode, the sensitivity decreases to 0 and 21 nm/RIU in gas and liquid environments, respectively. The sensor has a maximum figure of merit (FOM) of 103 RIU^-1. These characteristics realize a highly sensitive sensors with a high FOM and self-reference capabilities, which are advantageous for bioassay detection applications.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 4","pages":"2187 - 2196"},"PeriodicalIF":3.3,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141865047","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}

{"title":"Enhancing Spectral Responsivity of Zinc Oxide Nanoparticles via Laser Ablation on Porous Silicon","authors":"Salah M. Abdul Aziz,&nbsp;Uday M. Nayef,&nbsp;Mohammed Rasheed","doi":"10.1007/s11468-024-02456-5","DOIUrl":"10.1007/s11468-024-02456-5","url":null,"abstract":"<div><p>In this research, the production of zinc oxide nanoparticles (ZnO NPs) was made using various pulsed laser ablation energy (PLA) embedded in substrates made up of porous silicon (PS). The PS substrates were created using the photoelectrochemical etching (PECE) technique of Si n-type (111). The research examined the impact of pulse laser ablation energy for some features on the prepared samples that involved the structural, electrical, optical, and morphological properties in photodetector application. XRD analysis reveals a broad diffraction peak at an angle of 28.4° for the porous silicon with other diffraction peaks at different angles, indicating the presence of the ZnO NPs phase corresponding to the structure of hexagonal wurtzite. The SEM image demonstrates that PS is sponge-like, while ZnO NPs display randomly dispersed spherical grains. The optical characteristics of the fabricated specimens were analyzed using photoluminescence and UV-vis absorption spectroscopy. It was observed that an increase in laser pulse energy results in a shift of the absorption wavelengths and a change in the energy gap. The J-V characteristics of the created specimens were analyzed under two conditions: in dark and light while varying the laser pulse energy. The photodetectors consisting of ZnO NPs/PS/n-Si exhibited rectifying characteristics and remarkable responsivity to a wide range of wavelengths, from UV to near-infrared. Furthermore, the constructed photodetectors exhibited enhanced quantum efficiency (Q.E), specifically in the ultraviolet (UV) range. The results of this research are significant in the progress of optoelectronic and photodetector devices that rely on ZnO NPs and PS.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 4","pages":"2197 - 2207"},"PeriodicalIF":3.3,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141865294","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}

{"title":"Biosynthesized Graphene Oxide Nanoparticles: In-Vitro Comparative Study for Biomedical Applications","authors":"Inas S. Mohammed,&nbsp;Duaa Hammoud,&nbsp;Sajidah H. Alkhazraji,&nbsp;Kareem H. Jawad,&nbsp;Buthenia A. Hasoon,&nbsp;Ali Abdullah Issa,&nbsp;Majid S. Jabir","doi":"10.1007/s11468-024-02433-y","DOIUrl":"10.1007/s11468-024-02433-y","url":null,"abstract":"<div><p>Graphene-based materials have been the subject of extensive research due to its exceptional ability to kill a diverse array of microorganisms. The benefits of graphene-based materials include ease of fabrication, renewable resources, special catalytic properties, and remarkable physical properties including tensile strength and a large specific surface area. Our study utilizes an environmental method (laser production) to produce GONPs. GONPs are tested as potential; this study assesses the molecular docking simulation, anti-microbial, against clinically pathogenic strains of <i>Klebsiella pneumoniae</i> and <i>Bacillus cereus</i>. Antioxidant by DPPH assay and anti-cancer properties of graphene nanoparticles (GONPs) with Doxorubicin on lung cancer (A549 cell line). TEM images demonstrated types of produced GO-NP spherical nanoparticles with a size ranging at approximately 15–40 nm. Atomic force microscopy (AFM) was used to examine the morphological and topological characteristics of the NPs. The structural and crystal characteristics were examined by X-ray diffraction (XRD). Among the anti-bacterial-evaluated GONPs, concentrations of 100, 50, and 25 µg/ml exhibited the most substantial growth inhibition zone against <i>Klebsiella pneumoniae</i> and <i>Bacillus cereus</i>. The molecular docking simulation of GONP-OH modified gave more effective results against <i>Bacillus cereus</i> bacterial organism (ID: 5V8D) and (ID: 5GT6). Conversely, the highest anti-biofilm activity was observed against <i>Bacillus cereus</i> than <i>Klebsiella pneumoniae</i>, notably with 100 µg/ml GONPs. On the toxicity examination of cancer cells, the impact of nanoparticles was investigated. The produced nanoparticles had a higher cytotoxicity rate. The cytotoxicity of GONP alone, Doxorubicin alone, and/or combination therapy (GONP + Doxorubicin) found to be in 25 µg/ml concentration and time dependent manner also increased as combination therapy. The analysis for cell cytotoxicity revealed a noteworthy decrease in the number of cancer cells after GONP + Doxorubicin were treated for 72 h. The average cell cytotoxicity of GONP +Doxorubicin were 54, 61.31, and 76.41% for 24, 48, and 72 h, respectively. Both GONPs exhibited higher cell toxicity and cell death contract control. Additional GONPs showed strong antioxidant properties by DPPH assay. The present research demonstrates the advantageous effectiveness of a simpler production procedure, like laser production, for producing high-purity nanoparticles with low hazard that may be utilized as future possible cancer therapies.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 4","pages":"2165 - 2179"},"PeriodicalIF":3.3,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141865292","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}