Plasmonics最新文献

{"title":"Enhanced Optical Limiting in Plasmonic Cu-Integrated Silica Nanocomposites","authors":"Suchithra S,&nbsp;Vijayakumar Sadasivan Nair,&nbsp;Saravana Kumar,&nbsp;Vinoy Thomas,&nbsp;Remya Muralimanohar,&nbsp;Hubert Joe,&nbsp;Alice Noble","doi":"10.1007/s11468-026-03403-2","DOIUrl":"10.1007/s11468-026-03403-2","url":null,"abstract":"<div><p>Plasmon-engineered dielectric nanocomposites are promising materials for enhancing nonlinear optical (NLO) responses. With the rapid advancement of high-intensity laser technologies, there is a growing demand for efficient optical limiting systems to safeguard sensitive photonic components and human vision from high-intensity laser radiation. In this context, this study reports the development of metal-based optical limiters by integrating copper nanoparticles into a silica matrix, offering an efficient platform for an enhanced nonlinear optical response. The nanocomposites were synthesized via the sol–gel route, and their structure and morphology were examined using X-ray diffraction and high-resolution transmission electron microscopy (HRTEM), respectively. The elemental composition and chemical state were analyzed by X-ray photoelectron spectroscopy, and the third-order nonlinear optical properties and optical-limiting performance were evaluated using the <i>Z</i>-scan technique. Copper nanoparticles introduce pronounced plasmon–matrix coupling within the silica host, enabling bandgap modulation and strong local electromagnetic field enhancement, which collectively promote efficient two-photon absorption and nonlinear optical responses. Plasmonic states at the metal–dielectric interface modulate charge transport and amplify excited-state absorption, yielding dominant reverse-saturable absorption and robust optical limiting properties. The nanocomposites exhibited an optical limiting threshold of 1.66 Jcm⁻² at an input energy of 0.5 mJ under 532 nm excitation (5 ns, 10 Hz). The results reveal a clear correlation between nonlinear absorption dynamics and plasmon-mediated charge transport, establishing copper-silica (Cu–SiO₂) nanocomposites as efficient platforms for photonic protection and laser-sensitive-sensor applications.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"21 6","pages":"2889 - 2908"},"PeriodicalIF":5.6,"publicationDate":"2026-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148807614","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":"Comment on “Silver Nanoparticles-assisted Surface-enhanced Raman Spectroscopy for Serum-based Diagnosis of Hypopharyngeal Cancer”","authors":"Ivan A. Bratchenko,&nbsp;Lyudmila A. Bratchenko","doi":"10.1007/s11468-026-03409-w","DOIUrl":"10.1007/s11468-026-03409-w","url":null,"abstract":"","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"21 6","pages":"2887 - 2888"},"PeriodicalIF":5.6,"publicationDate":"2026-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148807615","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":"Strongly Coupled Quadrupolar Resonances from Edge-Oriented Plasmonic Nanocube Lattices","authors":"Alexander D. Fuqua,&nbsp;Yufei Wang,&nbsp;Bin Wang,&nbsp;Andrea R. Tao","doi":"10.1007/s11468-026-03399-9","DOIUrl":"10.1007/s11468-026-03399-9","url":null,"abstract":"<div><p>Shaped metal nanoparticles arranged in specific patterns and orientations can induce plasmon coupling, resulting in unique spectral features and highly localized electric fields. Nanocubes (NCs), for example, possess quadrupolar plasmon resonances that give rise to strong optical absorption and high electric field strengths concentrated at the NC corners and edges. While coupling of these resonance modes has been extensively studied in face-oriented NCs, recent experimental achievements have made edge-oriented NCs of particular interest. In this study, we study Ag NCs arranged in various edge-to-edge configurations, including one-dimensional (1D) chains and a two-dimensional (2D) checkerboard lattice. We explore the spectral and near-field properties resulting from the coupling of a NC quadrupolar mode in these different morphological scenarios.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"21 6","pages":"2865 - 2874"},"PeriodicalIF":5.6,"publicationDate":"2026-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11468-026-03399-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148807477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ag Thickness-Controlled Plasmonic Nanogaps in UV Nanoimprinted Nanocone Cluster Arrays for Surface-Enhanced Raman Spectroscopy","authors":"Chun-Hung Tsai,&nbsp;Guan-Wei Lin,&nbsp;Ding-Zheng Lin","doi":"10.1007/s11468-026-03398-w","DOIUrl":"10.1007/s11468-026-03398-w","url":null,"abstract":"<div><p>Plasmonic nanogaps formed on metallic nanostructures play a critical role in surface-enhanced Raman spectroscopy (SERS), but the scalable fabrication of high-density and morphology-controllable hotspots on polymer substrates remains challenging. In this work, we report a UV-nanoimprinted nanocone-cluster substrate with Ag-thickness-controlled plasmonic nanogaps for SERS applications. A high-aspect-ratio anodic aluminum oxide mold was used to replicate polymer nanocone arrays, and a lateral peel-off process was employed to induce nanocone clustering. Subsequent Ag deposition by intermittent sputtering enabled the evolution of cluster-like metallic morphologies and inter-nanocone gaps. Among the investigated Ag thicknesses, the AR3 nanocone-cluster SERS substrate with a total Ag thickness of 143 nm exhibited the highest melamine SERS signal at 700 cm⁻¹, reaching approximately 81 counts s⁻¹ mW⁻¹. Compared with the commercial AR2-ref reference substrate, AR3-NSS exhibited a broader Ag-thickness tolerance window and a lower polymer-related Raman background under the tested conditions. Within the AR3-NSS thickness series, the strongest SERS response was observed at 143 nm Ag thickness, which was consistent with the formation of a cluster-like Ag morphology with nanoscale inter-cluster gaps. The optimized substrate further exhibited good spatial uniformity over a 5 × 5 mm² area with a relative standard deviation of 9.44% and batch-to-batch reproducibility with a relative standard deviation of 8.33%. Using malachite green as a demonstration analyte, the substrate achieved a limit of detection of approximately 1.73 × 10⁻⁷ M and an apparent wet-state enhancement factor of 4.21 × 10⁷. These results suggest that demolding-induced nanocone clustering combined with Ag-thickness control provides a practical route for fabricating polymer-based plasmonic SERS substrates.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"21 6","pages":"2853 - 2863"},"PeriodicalIF":5.6,"publicationDate":"2026-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11468-026-03398-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148807496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Engineered Silver Nanoparticle Aggregate Hotspots on Glass Substrates for Ultrasensitive SERS Fingerprinting of Helicobacter pylori","authors":"Imad Kareem Alsabari,&nbsp;Akram Rostaminia,&nbsp;Ali Abbasi,&nbsp;Danya Awni Kamal,&nbsp;Shaymaa Awad Kadhim,&nbsp;Noor Abdulrahman Khalis,&nbsp;Vahid Eskandari,&nbsp;Kamran Heydaryan","doi":"10.1007/s11468-026-03401-4","DOIUrl":"10.1007/s11468-026-03401-4","url":null,"abstract":"<div><p>Surface-enhanced Raman spectroscopy (SERS) has emerged as a powerful plasmonic sensing strategy for rapid, label-free detection of biological targets via localized electromagnetic (EM) field enhancement at metallic nanostructures. In this work, plasmonically active silver nanoparticle (AgNP) aggregate films were fabricated on glass substrates via APTES-assisted surface functionalization followed by immersion coating. The AgNPs were synthesized using a modified Tollens reduction approach employing sucrose as a green reducing agent. Structural and optical characteristics of the resulting plasmonic substrates were investigated by UV–Vis spectroscopy, field emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM), confirming the formation of densely distributed nanoparticle aggregates capable of generating abundant SERS hotspots. The analytical performance of the substrates was evaluated for the detection of <i>Helicobacter pylori</i>, a clinically significant gastric pathogen. Distinct SERS fingerprints of <i>H. pylori</i> were successfully recorded over a concentration range of 10¹–10¹⁰ Colony-Forming Unit (CFU) mL^− 1. The plasmonic substrate exhibited a limit of detection as low as 10¹ CFU mL^− 1, an empirical enhancement factor (EF) of 4.49 × 10⁶, and excellent signal reproducibility with a relative standard deviation of 6.31% obtained from five independent measurements. The observed sensitivity is attributed to strong localized surface plasmon resonance (LSPR) coupling within AgNP aggregates, resulting in efficient EM enhancement. These findings demonstrate that AgNP aggregate films deposited on glass provide a simple, low-cost, and highly reproducible plasmonic SERS platform for ultrasensitive bacterial detection and molecular fingerprinting, highlighting their potential for rapid biomedical sensing applications.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"21 6","pages":"2839 - 2852"},"PeriodicalIF":5.6,"publicationDate":"2026-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148807235","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":"Highly Sensitive Multilayer Grating-Induced D-shaped Optical Fiber for SPR-based Opto-fluidic Sensing","authors":"Bishnu Daripa,&nbsp;Dipanjan Karmakar,&nbsp;Shyamal Mondal,&nbsp;Shyamal Das,&nbsp;Anirban Dhar","doi":"10.1007/s11468-026-03405-0","DOIUrl":"10.1007/s11468-026-03405-0","url":null,"abstract":"<div><p>This study proposed a novel D-shaped optical fiber-based surface plasmon resonance (SPR) sensor for refractive index (RI) sensing, featuring a bimetallic (Ag-Au) layer integrated with a titanium oxide coating (TiO₂) and two different two-dimensional (2D) materials, namely, Molybdenum disulfide (MoS₂), and Graphene (GN). Surface plasmon waves are developed at the metal-dielectric surface when the evanescent field of the fiber mode excites the metal electrons under phase-matching conditions. Variations in the RI of the optofluidic medium are detected by monitoring shifts of the resonance absorption peaks. The architecture of D-shaped fiber is used to optimize the performance of the sensor through finite element method (FEM) to evaluate the key parameters such as the number of gratings, grating period, gap between two gratings, and residual cladding. The impact of the deposited layer thickness on sensor sensitivity is systematically investigated. A maximum 15,030 nm/ RIU sensitivity was achieved through this suggested design. The findings indicate that the multilayer grating-assisted structure provides 110% higher sensitivity than a conventional Ag-grated D-shaped fiber SPR sensor. The proposed sensor’s results highlight the potential for highly sensitive chemical and biochemical sensing, as well as future sensing applications.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"21 6","pages":"2819 - 2837"},"PeriodicalIF":5.6,"publicationDate":"2026-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148807628","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":"Hot-Spot-Rich Silver Nanoparticle Assemblies on Cellulose Paper for Ultrasensitive Surface-Enhanced Raman Detection of Acinetobacter baumannii","authors":"Murtadha Dheyaa Mohsin,&nbsp;Liwaa Hussein Mahdi,&nbsp;Ali Abbasi,&nbsp;Danya Awni Kamal,&nbsp;Shaymaa Awad Kadhim,&nbsp;Masoomeh Sadat Fini,&nbsp;Vahid Eskandari,&nbsp;Kamran Heydaryan","doi":"10.1007/s11468-026-03404-1","DOIUrl":"10.1007/s11468-026-03404-1","url":null,"abstract":"<div><p>Surface-enhanced Raman scattering (SERS) has emerged as a powerful plasmonic sensing strategy owing to its ability to amplify molecular vibrational signatures through localized surface plasmon resonance (LSPR)-induced electromagnetic enhancement. In this work, a flexible paper-based plasmonic substrate was developed by immobilizing Tollens-derived silver nanoparticles (AgNPs) onto cellulose filter paper through a simple immersion-coating process. UV–Vis spectroscopy revealed a characteristic LSPR absorption band centered at 405 nm, while FE-SEM analysis demonstrated the formation of densely packed AgNP assemblies on the cellulose fibers. The hierarchical roughness of the paper matrix combined with nanoscale interparticle gaps generated abundant plasmonic hot spots capable of producing strong localized electromagnetic fields. The plasmonic performance of the substrate was evaluated through SERS-based detection of <i>Acinetobacter baumannii</i>. Distinct Raman fingerprints were successfully detected over a bacterial concentration range spanning 10¹–10¹⁰ CFU. The fabricated substrate exhibited an experimental enhancement factor of 2.41 × 10⁶ at 1595 cm^− 1 and achieved a detection limit of 10¹ CFU. Reproducibility studies yielded a relative standard deviation of 4.31% from five independent measurements, confirming excellent signal uniformity across the plasmonic surface. The observed enhancement is attributed to efficient electromagnetic coupling within the AgNP assemblies and the resulting high-density hot-spot network distributed throughout the cellulose scaffold. These findings demonstrate that AgNP-decorated filter paper provides a low-cost, flexible, and highly effective plasmonic architecture for ultrasensitive SERS biosensing and pathogen detection.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"21 6","pages":"2805 - 2817"},"PeriodicalIF":5.6,"publicationDate":"2026-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148807234","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 and Analysis of an Anti-Resonant Optical Fiber for Enhanced Temperature Sensitivity","authors":"Ruifan Wu,&nbsp;Qiming Wang,&nbsp;Siying Du,&nbsp;Xiaolan Zhang,&nbsp;Yongqi Gai,&nbsp;Danping Jia","doi":"10.1007/s11468-026-03397-x","DOIUrl":"10.1007/s11468-026-03397-x","url":null,"abstract":"<div><p>This study presents the design and numerical analysis of an anti-resonant optical fiber structure based on a nested configuration for temperature sensing. The proposed sensor incorporates an elliptical cladding tube geometry. Gold (Au) and titanium dioxide (TiO₂) films are coated on the inner surface to form a dual-loss layer, enabling the excitation of coupled resonant modes. In addition, an internal elliptical nested structure is introduced to further tailor the modal characteristics and improve temperature sensitivity. Through structural and material optimization, numerical simulations indicate that the proposed sensor operates based on lossy mode resonance (LMR) and surface plasmon resonance (SPR) mechanisms. Within the temperature range of 20–40 ℃, a temperature sensitivity of up to 4.3 nm/℃ is achieved, demonstrating enhanced spectral response to temperature variations. In addition to temperature sensing, the proposed configuration also exhibits potential for refractive index detection due to its resonance-based operating mechanism, suggesting broader applicability in sensing scenarios requiring high spectral sensitivity.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"21 6","pages":"2783 - 2804"},"PeriodicalIF":5.6,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148807470","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":"First-Principles Investigation of Optical and Plasmonic Response of Lead-Free Rb₂AgSbX₆ (X = Br, I) Double Perovskites","authors":"K. Bouferrache,&nbsp;M. A. Ghebouli,&nbsp;M. Fatmi,&nbsp;Faisal K. Alanazi,&nbsp;Samah Saidi,&nbsp;Talal M. Althagafi,&nbsp;Aseel Smerat,&nbsp;Murat Yaylacı","doi":"10.1007/s11468-026-03396-y","DOIUrl":"10.1007/s11468-026-03396-y","url":null,"abstract":"<div><p>The development of environmentally benign materials with tunable optical and plasmonic responses is essential for next-generation photonic, optoelectronic, and sustainable energy technologies. In this work, we investigate the structural, electronic, optical, plasmonic, and thermoelectric properties of lead-free Rb₂AgSbX₆ (X = Br, I) double perovskites using first-principles calculations based on density functional theory. Structural optimization confirms the formation of stable cubic phases with favorable tolerance factors and negative formation energies, indicating good thermodynamic stability<b>.</b> Mechanical stability was further confirmed from the calculated elastic constants, which satisfy the Born stability criteria for cubic crystals, while the tolerance and octahedral factors support the structural stability of the perovskite phase. The electronic structure calculated using the mBJ-GGA approach reveals direct band gaps of 1.82 eV and 1.06 eV for Rb₂AgSbBr₆ and Rb₂AgSbI₆, respectively, indicating that Br → I substitution reduces the band gap and shifts the optical response toward lower photon energies; this trend, together with the increase in static dielectric constant from 4.097 to 5.675 and refractive index from 2.024 to 2.382, demonstrates the effective role of halide substitution in tuning the electronic and optical properties for optoelectronic and photovoltaic applications. The optical analysis shows strong absorption in the visible–ultraviolet region, high optical conductivity, and significant dielectric response, confirming efficient light–matter interaction. In particular, the energy loss function reveals distinct peaks associated with collective electronic oscillations, indicating moderate plasmon-like features associated with collective electronic excitations, although their plasmonic strength is expected to be lower than that of conventional metallic plasmonic materials. These moderate plasmon-like features, together with the high absorption coefficient, optical conductivity, and dielectric response, suggest the potential relevance of these lead-free double perovskites for UV optoelectronic, optical-filtering, photodetection, and sensing-related applications, although further experimental validation is required. Furthermore, thermoelectric calculations performed using BoltzTraP under the constant relaxation-time approximation, combined with lattice thermal conductivity estimated from the Slack model, show favorable Seebeck coefficients and figure-of-merit values approaching 0.8 at high temperatures up to 800 K, highlighting their additional potential for waste-heat recovery. Overall, Br → I substitution effectively tunes the electronic, optical, plasmon-like, and transport properties of Rb₂AgSbX₆ double perovskites, highlighting their potential as lead-free multifunctional materials for sustainable optoelectronic and energy-conversion applications.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"21 6","pages":"2765 - 2781"},"PeriodicalIF":5.6,"publicationDate":"2026-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148807431","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":"Ultrasensitive Low-Temperature Sensor based on Silver Nano-Film-Coated Dual-Polarization Photonic Crystal Fiber","authors":"Jiyu Dong,&nbsp;Yu Feng,&nbsp;Shuhuan Zhang,&nbsp;Zhiyuan Han,&nbsp;Qichao Wang,&nbsp;Xue Li,&nbsp;Bowen Feng,&nbsp;Shaoxiong Wu,&nbsp;Mengyan Wei","doi":"10.1007/s11468-026-03394-0","DOIUrl":"10.1007/s11468-026-03394-0","url":null,"abstract":"<div><p>To address the urgent demand for ultrasensitive low-temperature measurement technology, a novel D-shaped photonic crystal fiber (PCF) low-temperature sensor is proposed in this study. Based on the surface plasmon resonance (SPR) effect, the sensor adopts a silver nanofilm as the excitation layer and polydimethylsiloxane (PDMS) as the temperature-sensitive material for accurate temperature measurement. The finite element method (FEM) is adopted to simulate and optimize key parameters, including silver nanofilm thickness, polishing depth, and semi-axial dimensions of the elliptical air holes. Simulation results show that at -35℃ to 0℃, the average wavelength sensitivity of the x-polarized mode is 15.36 ~ 17.54 nm/℃ within the 1200 ~ 2500 nm band, and the value reaches 16.50 ~ 18.49 nm/℃ for the y-polarized mode in the 1200 ~ 2700 nm band. Featuring both high sensitivity and environmental adaptability, this low-temperature sensor can be widely applied in fields such as medical cryopreservation, polar environment monitoring, cold chain temperature control and industrial low-temperature process regulation.</p><h3>Graphical Abstract</h3><p>(<b>a</b>) Test flow chart of the silver film-coated D-shaped PCF temperature sensor. (<b>b</b>) Linear fitting curve of temperature versus resonance wavelength for the x-polarized core mode of the sensor under corresponding structural parameters. (<b>c</b>) Linear fitting curve of temperature versus resonance wavelength for the y-polarized core mode of the sensor under corresponding structural parameters</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"21 6","pages":"2749 - 2763"},"PeriodicalIF":5.6,"publicationDate":"2026-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148807293","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}