Plasmonics最新文献_第10页

Boosting Optical Current in Amorphous Silicon Solar Cells Using Multi-layer Bimetallic Plasmonic Nano-ring Structures 利用多层双金属等离子体纳米环结构增强非晶硅太阳能电池的光电流

IF 4.3 4区物理与天体物理

Plasmonics Pub Date : 2025-01-14 DOI: 10.1007/s11468-025-02759-1

Hamid Heidarzadeh, Taha Shahabi

{"title":"Boosting Optical Current in Amorphous Silicon Solar Cells Using Multi-layer Bimetallic Plasmonic Nano-ring Structures","authors":"Hamid Heidarzadeh, Taha Shahabi","doi":"10.1007/s11468-025-02759-1","DOIUrl":"10.1007/s11468-025-02759-1","url":null,"abstract":"<div><p>Incorporating multi-layer bimetallic plasmonic nano-ring structures into amorphous silicon solar cells can effectively enhance the optical current by manipulating light absorption and trapping. Improving the photocurrent density in amorphous silicon (a-Si) solar cells is essential for enhancing their efficiency and competitiveness in thin-film photovoltaic applications. This study investigates the impact of multi-layer plasmonic nano-ring structures, composed of alternating layers of aluminum (Al) and nickel (Ni), on the optical current of a-Si solar cells. Using various nano-ring configurations for a cell with periods of 200 nm, 300 nm, and 400 nm, the effect of different layering sequences on photocurrent density were analyzed. Results indicate that the inclusion of nano-rings significantly boosts photocurrent density and higher layer counts yielding the greatest improvements. For instance, the Al/Ni/Al/Ni/Al/Ni/Al configuration at 200 nm achieved a maximum photocurrent density of 23.88 mA/cm<sup>2</sup>, a notable increase from the baseline value of 16.65 mA/cm<sup>2</sup> observed without nano-rings. These findings highlight the role of tailored plasmonic nano-ring structures in enhancing light absorption and charge generation, providing a promising approach for optimizing a-Si solar cell performance through structural design innovations.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 8","pages":"5657 - 5666"},"PeriodicalIF":4.3,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923148","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 Optical Fiber-Based SPR Sensor for Early Cancer Cell Detection Using Cerium Oxide and Tungsten Disulfide 基于氧化铈和二硫化钨的高灵敏度光纤SPR传感器用于早期癌细胞检测

IF 4.3 4区物理与天体物理

Plasmonics Pub Date : 2025-01-14 DOI: 10.1007/s11468-024-02718-2

Nasih Hma Salah, Yesudasu Vasimalla, Baljinder Kaur, Hogr M. Rasul, Chella Santhosh, Ramachandran Balaji, S. R. Srither, Santosh Kumar

{"title":"High-Sensitivity Optical Fiber-Based SPR Sensor for Early Cancer Cell Detection Using Cerium Oxide and Tungsten Disulfide","authors":"Nasih Hma Salah, Yesudasu Vasimalla, Baljinder Kaur, Hogr M. Rasul, Chella Santhosh, Ramachandran Balaji, S. R. Srither, Santosh Kumar","doi":"10.1007/s11468-024-02718-2","DOIUrl":"10.1007/s11468-024-02718-2","url":null,"abstract":"<div><p>Cancer is one of the leading causes of cancer-related deaths worldwide. By detecting cancer early, healthcare providers can intervene promptly with appropriate treatment strategies, potentially preventing the progression of the disease to more advanced stages. Additionally, early detection can lead to more cost-effective treatment approaches, as managing cancer at later stages often requires extensive and expensive interventions. Therefore, this article explores a novel optical fiber-based surface plasmon resonance (SPR) sensor for the detection of cancerous cells, such as Jurkat, HeLa, PC1-2, MDA-MB-231, and MCF7. The proposed sensor comprises HBL core-cladding-silver (Ag)-cerium oxide (CeO<sub>2</sub>)-tungsten disulfide (WS<sub>2</sub>)-analyte, whereas Ag provides the sharp resonance dip, CeO<sub>2</sub> provides protection from Ag’s oxidation and WS<sub>2</sub> enhances the sensing capability. The sensor’s performance analyzes by applying the wavelength interrogation technique. Firstly, the optimization of Ag, CeO<sub>2</sub>, and WS<sub>2</sub> layers’ thicknesses, and indent angles are executed by observing the performance of minimum transmittance power, FWHM, and sensitivity. Secondly, sensing parameters of sensitivity and figure of merit (FoM) are analyzed with the optimized structure. Results show that the maximum achieved parameters are a sensitivity of 29,642.9 <span>(text{nm}/text{RIU})</span> and a FoM of 120.5 <span>({text{RIU}}^{-1}.)</span> The results furnish a substantial improvement in comparison to the reported work in the literature.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 9","pages":"7035 - 7048"},"PeriodicalIF":4.3,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145090667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Effect of Different Nanoparticles Surface Plasmon Polariton (SPP) Grating on Ge, Si, InP, and GaAs Photodetectors Performance 不同纳米粒子表面等离激元（SPP）光栅对Ge、Si、InP和GaAs光电探测器性能的影响

IF 4.3 4区物理与天体物理

Plasmonics Pub Date : 2025-01-14 DOI: 10.1007/s11468-024-02705-7

Hagar Marouf, Nariman Abdel-Salam, El-Sayed M. El-Rabaie, Ahmed Nabih Zaki Rashed, Khalil M. ElKhamisy

{"title":"The Effect of Different Nanoparticles Surface Plasmon Polariton (SPP) Grating on Ge, Si, InP, and GaAs Photodetectors Performance","authors":"Hagar Marouf, Nariman Abdel-Salam, El-Sayed M. El-Rabaie, Ahmed Nabih Zaki Rashed, Khalil M. ElKhamisy","doi":"10.1007/s11468-024-02705-7","DOIUrl":"10.1007/s11468-024-02705-7","url":null,"abstract":"<div><p>The photonics community is getting more involved in plasmonic detectors that detect light. Plasmonics permits lighting to be directed into microscopic areas in metal frameworks; this feature might imitate further advancements in the effectiveness of detectors that detect light. Plasmonic nanostructures may alter light at a subwavelength scale and have been seen as an effective way to improve photoresponsiveness in semiconductor components. A groove in a surface plasmon polaritons (SPPs) catapult which encircles a novel germanium (Ge), silicon (Si), indium phosphide (InP), and gallium arsenide (GaAs) photodetectors can be applied to improve the detector’s photocurrent, responsivity, and internal quantum efficiency of the detector. In this study, we examine the effect of a gold (Au) and a silver (Ag) SPP on Ge, Si, InP, and GaAs photodetectors. Moreover, in this study, we demonstrated that the recombination of the gold SPP with the photodetector presents higher responsivity (R) and current density (J) than that with the silver SPP in all of the examined photodetectors. The maximum responsivity when using gold nanoparticles in Ge achieves 250 A W<sup>−1</sup>, 150 A W<sup>−1</sup> in Si, 40 A W<sup>−1</sup> in InP, and 25 A W<sup>−1</sup> in GaAs. The results also achieve a high current density (J) of 25 mA cm<sup>−2</sup> in Ge gold SPP, 15 mA cm<sup>−2</sup> in Si gold SPP, 3.6 mA cm<sup>−2</sup> in InP gold SPP, and 1.6 mA cm<sup>−2</sup> in GaAs gold SPP. The results demonstrated that the Ge achieves the best performance of all examined photodetectors, and the gold SPP achieves better results than the silver SPP. We utilize a 3-D finite element method (FEM) COMSOL Multiphysics 6.1 simulation tool in all experiments results.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 9","pages":"7017 - 7033"},"PeriodicalIF":4.3,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11468-024-02705-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145090668","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}

引用次数: 0

Sensitivity Enhancement Using Surface Plasmon Resonance Sensor for Colorectal Detection by Employing Heterostructure 利用异质结构增强表面等离子体共振传感器检测结肠直肠的灵敏度

IF 4.3 4区物理与天体物理

Plasmonics Pub Date : 2025-01-13 DOI: 10.1007/s11468-024-02735-1

Kalpana N., Abdullah N. Alodhayb, Saravanan Pandiaraj, Shivam Singh

{"title":"Sensitivity Enhancement Using Surface Plasmon Resonance Sensor for Colorectal Detection by Employing Heterostructure","authors":"Kalpana N., Abdullah N. Alodhayb, Saravanan Pandiaraj, Shivam Singh","doi":"10.1007/s11468-024-02735-1","DOIUrl":"10.1007/s11468-024-02735-1","url":null,"abstract":"<div><p>This article proposes a surface plasmon resonance (SPR) sensor based on heterostructure (MXene/h-BN/BP) for colorectal cancer detection. Surface plasmons (SPs) have been excited using the prism-based setup. The silver (Ag) layer on the CaF<sub>2</sub> prism makes up the structure of the proposed sensor. To increase the stability of the Ag layer, a heterostructure layer is applied on top. Both normal and colorectal tissues are used as the analyte medium to detect colorectal cancer. The transfer matrix method has been used to carry out the sensor’s numerical simulations. The proposed sensor’s performance is determined by its sensitivity, detection accuracy (DA), and figure of merit (FoM), which takes into account the SPR curve’s dip strength and full width at half maxima (FWHM). The sensitivity and FoM 315.30°/RIU and 52.34/RIU are obtained, respectively. The maximal sensitivity of 322.21°/RIU is achieved. Additionally, the penetration depth (PD) is achieved at 218.81 nm with the normal tissue. The proposed sensor would be a good candidate for biosensors and medical diagnostics.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 9","pages":"6989 - 6999"},"PeriodicalIF":4.3,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145090580","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

Controllable Large-Area Fabrication of Illumination Angle-Sensitive Metasurfaces Using Femtosecond Laser 利用飞秒激光可控大面积制备光照角敏感超表面

IF 4.3 4区物理与天体物理

Plasmonics Pub Date : 2025-01-13 DOI: 10.1007/s11468-024-02636-3

Yanping Yuan, Wenbo Wang, Dongfang Li, Tianyu Zhao, Weina Han

{"title":"Controllable Large-Area Fabrication of Illumination Angle-Sensitive Metasurfaces Using Femtosecond Laser","authors":"Yanping Yuan, Wenbo Wang, Dongfang Li, Tianyu Zhao, Weina Han","doi":"10.1007/s11468-024-02636-3","DOIUrl":"10.1007/s11468-024-02636-3","url":null,"abstract":"<div><p>Plasmonic nanostructures have shown significant potential for manipulating electromagnetic waves at the subwavelength scale. Plasmonic nanostructures exhibit optical bending, absorption, and scattering properties, as well as strong plasmonic resonance. However, the current fabrication methods heavily rely on photolithography or templates, which pose limitations in terms of cost, efficiency, complexity, and scalability. In this study, a novel method is proposed for the controllable fabrication of ordered metal–insulator-metal (MIM) gold nanobump arrays by femtosecond laser direct writing. The fine regulation and control of the shape and size of the gold nanostructure can be realized by changing laser pulse energy, which leads to the change of the resonance light scattering and the plasmon structure color of individual structure. Large-scale periodic gold nanostructure with illumination angle sensitive characteristic can be achieved by adopting the combination mode of high-power, high-attenuation, frequency-doubled laser, and a telephoto objective lens. This may have great application potential in the aspects of high-resolution imaging, information storage, nanodevices, optical metasurfaces, and biosensors.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 9","pages":"7001 - 7010"},"PeriodicalIF":4.3,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145090579","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 the Characterization of Filtrate Portions of Blood Serum Samples of Malaria Patients Using 30 kDa Filtration Devices 使用30 kDa过滤装置的表面增强拉曼光谱用于疟疾患者血清样品滤液部分的表征

IF 4.3 4区物理与天体物理

Plasmonics Pub Date : 2025-01-11 DOI: 10.1007/s11468-025-02760-8

Rafia Atta, Zainub Shoukat, Haq Nawaz, Muhammad Irfan Majeed, Nosheen Rashid, Norah A. Albekairi, Abdulrahman Alshammari, Aleena Shahzadi, Sonia Yaseen, Iqra Arshad, Mariam Shakeel, Taram Nayab, Mahrosh Javed

{"title":"Surface-Enhanced Raman Spectroscopy for the Characterization of Filtrate Portions of Blood Serum Samples of Malaria Patients Using 30 kDa Filtration Devices","authors":"Rafia Atta, Zainub Shoukat, Haq Nawaz, Muhammad Irfan Majeed, Nosheen Rashid, Norah A. Albekairi, Abdulrahman Alshammari, Aleena Shahzadi, Sonia Yaseen, Iqra Arshad, Mariam Shakeel, Taram Nayab, Mahrosh Javed","doi":"10.1007/s11468-025-02760-8","DOIUrl":"10.1007/s11468-025-02760-8","url":null,"abstract":"<div><p>Raman spectroscopy is a nondestructive tool for initial diagnosis of different diseases by using bodily fluids, including blood serum samples which having high and low molecular weight fractions (LMWF and HMWF) of proteins. The analysis of disease biomarkers is difficult because they mainly consist of LMWF of proteins which is suppressed by HMWF of proteins like albumin and globulin. The main focus of this study is to overcome this problem; 30 kDa centrifugal filtration devices were utilized to separate the filtrate portions of serum of malaria patients which have the marker proteins of malaria with size less than 30 kDa. For this purpose, surface-enhanced Raman spectroscopy (SERS), using silver nanoparticles (Ag-NPs) as SERS substrate, is used to examine biochemical variations occurring in the filtrate portions of serum of malaria patients to establish an easy and reliable method for diagnosis of malaria. SERS helped in distinguishing serum of healthy individuals from malarial patients on the basis of their characteristic SERS spectral features. The chemometric tool such as principal component analysis (PCA) is used for the analysis of SERS spectra of various classes of 30 kDa filtrate samples. PCA helped in the qualitative analysis of SERS spectra of filtrate portions of malaria and healthy filtrate.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 8","pages":"5647 - 5656"},"PeriodicalIF":4.3,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923277","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

Enhancement of Third-Harmonic Generation Through Plasmonic Gap and Cavity Resonance Modes in Bilayer Graphene/Dielectric/Graphene Metasurfaces 双层石墨烯/介电介质/石墨烯超表面等离子体间隙和腔共振模式增强三次谐波的产生

IF 4.3 4区物理与天体物理

Plasmonics Pub Date : 2025-01-11 DOI: 10.1007/s11468-024-02605-w

Chung-Ting Chou Chao, Sy-Hann Chen, Roshan Thotagamuge, Muhammad Raziq Rahimi Kooh, Yuan-Fong Chou Chau

{"title":"Enhancement of Third-Harmonic Generation Through Plasmonic Gap and Cavity Resonance Modes in Bilayer Graphene/Dielectric/Graphene Metasurfaces","authors":"Chung-Ting Chou Chao, Sy-Hann Chen, Roshan Thotagamuge, Muhammad Raziq Rahimi Kooh, Yuan-Fong Chou Chau","doi":"10.1007/s11468-024-02605-w","DOIUrl":"10.1007/s11468-024-02605-w","url":null,"abstract":"<div><p>This study presents a technique for achieving high third-harmonic generation (THG) conversion efficiency using a bilayer graphene/dielectric/graphene metasurface structure in the terahertz (THz) range. The enhanced THG mechanism leverages gap- and cavity-plasmon resonances at the resonant frequency, leading to effective localization and significant amplification of the electromagnetic (EM) wave on the graphene surface and within the gap region. This is due to the induction of both gap- and cavity-plasmon resonances. Introducing a metallic substrate beneath the bilayer structure narrows the resonant response bandwidth, resulting in zero transmittance and forming oscillating Fabry-Pérot (FP) waves within the cavity. This field enhancement, combined with graphene’s high nonlinear conductivity, boosts the THG conversion efficiency (CE) by several orders of magnitude, achieving − 24.905 dB at relatively low fundamental frequency (FF) input intensities. This device holds promise for various nonlinear optics and THz-integrated circuit applications, including terahertz switches and modulators.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 9","pages":"6975 - 6987"},"PeriodicalIF":4.3,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145090570","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-based Surface Plasmon Resonance Biosensor Design Using Square-shaped Metamaterial Resonators for Blood Cancer Detection 基于石墨烯表面等离子体共振生物传感器的方形超材料谐振器设计用于血癌检测

IF 4.3 4区物理与天体物理

Plasmonics Pub Date : 2025-01-11 DOI: 10.1007/s11468-024-02652-3

Osamah Alsalman

{"title":"Graphene-based Surface Plasmon Resonance Biosensor Design Using Square-shaped Metamaterial Resonators for Blood Cancer Detection","authors":"Osamah Alsalman","doi":"10.1007/s11468-024-02652-3","DOIUrl":"10.1007/s11468-024-02652-3","url":null,"abstract":"<div><p>This study presents a highly sensitive sensor, specifically designed with a unique structure and advanced materials, including graphene and metamaterials, to enhance early detection of blood cancer. The sensor’s structure is meticulously optimized, with graphene serving as a resonating layer and metamaterials integrated to amplify its performance. These materials, combined with the carefully configured structural parameters, create a sensor with superior sensitivity and efficiency. Additionally, adjustments to the angle of light incidence are explored to examine their influence on detection accuracy, further enhancing the sensor’s capabilities. Through this optimized design, the sensor gets an impressive sensitivity of 2143 nm/RIU, making it highly effective for detecting subtle refractive index changes associated with blood cancer biomarkers. Early detection of blood cancer, a condition that can be life-threatening if diagnosed late, is crucial for improving patient outcomes. This sensor, with its high sensitivity and optimized structural design, provides an efficient and powerful tool for early-stage blood cancer diagnosis.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 9","pages":"6963 - 6973"},"PeriodicalIF":4.3,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145090569","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

Detection of Cancer Type Cells Using Surface Plasmon Resonance Employing Copper, Perovskite, and MXene Layer with Sensitivity Enhancement 利用铜、钙钛矿和MXene层表面等离子体共振检测癌型细胞的灵敏度增强

IF 4.3 4区物理与天体物理

Plasmonics Pub Date : 2025-01-10 DOI: 10.1007/s11468-024-02742-2

Kishore Kumar Venkatesan, Sathiyan Samikannu, Shivam Singh

{"title":"Detection of Cancer Type Cells Using Surface Plasmon Resonance Employing Copper, Perovskite, and MXene Layer with Sensitivity Enhancement","authors":"Kishore Kumar Venkatesan, Sathiyan Samikannu, Shivam Singh","doi":"10.1007/s11468-024-02742-2","DOIUrl":"10.1007/s11468-024-02742-2","url":null,"abstract":"<div><p>One of the most common diseases in life, cancer cells are a major global health concern for people everywhere. An essential precondition for optimizing treatment outcomes is timely detection. Thus, it is imperative to address the issue of the quick and accurate identification of malignant cancer cells. This work proposes a theoretically surface plasmon resonance (SPR)-based sensor for the identification of various cancer type cells. It consists of prism (BK7), copper (Cu), hybrid organic–inorganic halide perovskites (<b><i>MAPbX</i></b><span>(_{varvec{3}})</span> = <b><i>CH</i></b><span>(_{varvec{3}})</span> <b><i>NH</i></b><span>(_{varvec{3}})</span> <b><i>PbY</i></b><span>(_{varvec{3}})</span>, with M=<b><i>CH</i></b><span>(_{varvec{3}})</span>, A =<b><i>NH</i></b><span>(_{varvec{3}})</span>, and Y = Br), and MXene layer. The perovskite-based sensor that is suggested performs more efficiently than the traditional one. For the optimal SPR sensor, layers of Cu, perovskite, and MXene have been optimized. The best thicknesses for Cu (33–43nm) and <b><i>MAPbBr</i></b><span>(_{varvec{3}})</span> (10 nm) as with MXene layer lead to the highest achieved sensitivity of 307.18 deg/RIU with remarkable detection accuracy (DA) and figure of merit (FoM) of 0.161/deg and 49.45/RIU, respectively. Compared to the most recent work that makes use of SPR configuration, this sensitivity is extremely high. Consequently, the proposed SPR sensor is a strong candidate for various biosensing applications.</p></div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 9","pages":"6951 - 6961"},"PeriodicalIF":4.3,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145090488","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

Designing Ultrasensitive NIR-II SERS Nanoprobes: Achieved via Plasmonic Engineering 设计超灵敏的NIR-II SERS纳米探针：通过等离子体工程实现

IF 4.3 4区物理与天体物理

Plasmonics Pub Date : 2025-01-10 DOI: 10.1007/s11468-024-02749-9

Yifan Wu, Wenhao Zhou, Baihong An

{"title":"Designing Ultrasensitive NIR-II SERS Nanoprobes: Achieved via Plasmonic Engineering","authors":"Yifan Wu, Wenhao Zhou, Baihong An","doi":"10.1007/s11468-024-02749-9","DOIUrl":"10.1007/s11468-024-02749-9","url":null,"abstract":"<div><p>The second near-infrared (NIR-II, 1000–1700 nm) window is advantageous for bioimaging due to its deep tissue penetration and low autofluorescence. Despite these benefits, creating highly sensitive surface-enhanced Raman scattering (SERS) nanoprobes in this range is challenging. This study introduces an ultra-sensitive SERS nanoprobe developed using plasmonic engineering. We selected the commercial Raman dye IR1061, with an absorption peak at 1061 nm, and synthesized gold nanotriangles (AuNTs) to absorb visible light and transfer energy to NIR-II phonons. The combination of IR1061 and AuNTs significantly improved the nanoprobe's sensitivity to 116 fM in the NIR-II window, due to enhanced electromagnetic fields and SERS effects. Theoretical analysis shows AuNTs have stronger electromagnetic hotspots than gold nanorods, enhancing SERS sensitivity. The nanoprobe penetrates pig tissue over 4 mm and agarose gels up to 5 cm. This work presents a novel approach to ultra-sensitive NIR-II SERS nanoprobes for bioimaging and diagnostics. It can not only overcome the bottleneck of traditional imaging technology, but also provide strong support for high-resolution imaging of deep tissues and provide more accurate information for clinical diagnosis and treatment.</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 9","pages":"6939 - 6950"},"PeriodicalIF":4.3,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145090489","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