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Wang, Xing-Yuan, Yi-Lun Wang, Suo Wang, Bo Li, Xiao-Wei Zhang, Lun Dai, and Ren-Min Ma. "Lasing Enhanced Surface Plasmon Resonance Sensing." Nanophotonics 6, no. 2 (March 1, 2017): 472–78. http://dx.doi.org/10.1515/nanoph-2016-0006.
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AbstractThe resonance phenomena of surface plasmons has enabled development of a novel class of noncontact, real-time and label-free optical sensors, which have emerged as a prominent tool in biochemical sensing and detection. However, various forms of surface plasmon resonances occur with natively strong non-radiative Drude damping that weakens the resonance and limits the sensing performance fundamentally. Here we experimentally demonstrate the first lasing-enhanced surface plasmon resonance (LESPR) refractive index sensor. The figure of merit (FOM) of intensity sensing is ~84,000, which is about 400 times higher than state-of-the-art surface plasmon resonance (SPR) sensor. We found that the high FOM originates from three unique features of LESPR sensors: high-quality factor, nearly zero background emission and the Gaussian-shaped lasing spectra. The LESPR sensors may form the basis for a novel class of plasmonic sensors with unprecedented performance for a broad range of applications.
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Rizal, Conrad, Vladimir Belotelov, Daria Ignatyeva, Anatoly K. Zvezdin, and Simone Pisana. "Surface Plasmon Resonance (SPR) to Magneto-Optic SPR." Condensed Matter 4, no. 2 (May 27, 2019): 50. http://dx.doi.org/10.3390/condmat4020050.
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In this editorial, a brief background of the surface plasmon resonance (SPR) principle is discussed, followed by several aspects of magneto-optic SPR (MOSPR) and sensing schemes from the viewpoint of fundamental studies and potential technological applications. New sensitivity metrics are introduced that would allow researchers to compare the performance of SPR and MOSPR-based sensors. Merits of MOSPR over SPR based sensors and challenges faced by MOSPR sensors in terms of their practical use and portability are also considered. The editorial ends with potential new configurations and future prospects. This work is considered highly significant to device engineers, graduate and undergraduate students, and researchers of all levels involved in developing new classes of bio-devices for sensing, imaging, environmental monitoring, toxic gas detection, and surveying applications to name a few.
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Semchuk, O. Yu, O. O. Havryliuk, and A. A. Biliuk. "Kinetic theory of surface plasmon resonance in metal nanoparticles." Surface 12(27) (December 30, 2020): 3–19. http://dx.doi.org/10.15407/surface.2020.12.003.
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In recent years, interest in studying the optical properties of metallic nanostructures has grown. This interest is primarily related to the possibility of practical application of such nanostructures in quantum optical computers, micro- and nanosensors. These applications are based on the fundamental optical effect of surface plasmon excitation. The consequence of this phenomenon is surface plasmon resonance (SPR) - an increase in the cross section of energy absorption by a metal nanoparticle as the frequency of incident light (laser radiation) approaches the SPR frequency of the nanoparticle. Plasmon structures are used to improve the efficiency of thin-film SC. In such structures, metal nanoparticles can primarily act as additional scattering elements for the long-wavelength component of sunlight illuminating SC. As a collective phenomenon, SPR can be described using kinetic approaches, ie using the Boltzmann kinetic equation for the conduction electrons of metal nanoparticles. In this work, the theory of SPR based on the kinetic equation for the conduction electrons of nanoparticles is constructed. to the well-known results derived from the Drude-Sommerfeld theory. Second, the kinetic method makes it possible to study metal nanoparticles with sizes larger or ptical conductivity tensor for spheroidal metal nanoparticles. It is shown that the effect of nanoparticle asymmetry on the ratio of the components of the optical conductivity tensor differs not only smaller than the average electron free path length. The developed theory is used to calculate the oquantitatively but also qualitatively in high-frequency and low-frequency surface scattering. It was found that in metal nanoparticles in a dielectric matrix, under SPR conditions, the full width of the SPR line in a spherical metal nanoparticle depends on both the radius of the particle and the frequency of the electromagnetic (laser) radiation exciting this SPR. It is shown that oscillations of the SPR line width with a change in the dielectric constant of the medium in which they are located can be observed in metal nanoparticles. The magnitude of these oscillations is greater the smaller the size of the nanoparticle and increases significantly with increase. As the radius of the spherical nanoparticle increases, the width of the SPR line decreases significantly and prevails around a certain constant value in media with a higher value of dielectric constant.
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HORING, NORMAN J. MORGENSTERN, and H. L. CUI. "SURFACE-PLASMON-RESONANCE BASED OPTICAL SENSING." International Journal of High Speed Electronics and Systems 18, no. 01 (March 2008): 71–78. http://dx.doi.org/10.1142/s012915640800514x.
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Over the past twenty years, surface plasmon resonance has been developed as an effective technique for use in real-time biotechnological measurements of the kinetics of label-free biomolecular interactions with high sensitivity.1-16 On a fundamental level, it is the dielectric-imaging involvement of the adsorbed biomolecular layer (DNA for example) in shifting the surface plasmon resonance (SPR) frequency by means of electrostatic coupling at the interface with the metal film substrate that facilitates SPR-based optical sensing. Of course, there are various factors that can influence surface plasmon resonance, including plasma nonlocality, phonons, multiplicity of layers, all of which should be carefully examined. Moreover, tunable SPR phenomenology based on the role of a magnetic field (both classically and quantum mechanically) merits consideration in regard to the field's effects on both the substrate17 and the adsorbed layer(s).18 This paper is focused on the establishment of the basic equations governing surface plasmon resonance, incorporating all the features cited above. In it, we present the formulation and closed-form analytical solution for the dynamic, nonlocal screening function of a thick substrate material with a thin external adsorbed layer, which can be extended to multiple layers. The result involves solution of the random phase approximation (RPA) integral equation for the spatially inhomogeneous system of the substrate and adsorbed layer,19-25 given the individual polarizabilities of the thick substrate and the layer. (This is tantamount to the space-time matrix inversion of the inhomogeneous joint dielectric function of the system.) The frequency poles of the resulting screening function determine the shifted surface (and bulk) plasmon resonances and the associated residues at the resonance frequencies provide their relative excitation amplitudes. The latter represent the response strengths of the surface plasmon resonances (oscillator strengths), and will be of interest in optimizing the materials to be employed.
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Du, Yangtao, Xiaoping Qu, and Guanzhong Wang. "Applications of surface plasmon resonance in biomedicine." Highlights in Science, Engineering and Technology 3 (July 8, 2022): 137–43. http://dx.doi.org/10.54097/hset.v3i.702.
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As one of optical technique, surface plasmon resonance (SPR) shows a superb interdisciplinary usage for detection. A diverse of different SPR-based biosensors have been constructed and been used for various fields, such as biomedicine, environmental monitoring and food safety. This research outlines the basic concepts, the working principle of SPR and the applications of SPR in biomedicine. In addition, the discovery and development of SPR will be present, as well as the mechanism behind SPR instruments. It will also be examined in detail the application of SPR in drug analysis and early diagnosis of cancer. Some perspectives about the latest research advances and future development areas will also be discussed respectively. The advantages and disadvantages of SPR will be illustrated throughout this work.
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Yadgar Hussein Shwan. "Calculate The Resonance Angle of Surface Plasmon Resonance Gold film Configured with Kretschmann." Tikrit Journal of Pure Science 27, no. 2 (November 30, 2022): 38–42. http://dx.doi.org/10.25130/tjps.v27i2.65.
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The current work includes measurements of the resonance angle and reflectance for p-polarization of the electric field by using the Fresnel equation at a given length. Gold's surface plasmon wave can be seen at the metal-to-air boundary. We try to determine the greatest (SPR) angle for a metal thin layer that is most suitable for the surface plasmon excitation while stimulated by a laser. SPR was performed of a single film of gold placed on a glass prism; there are SPR modes in this structure, which match the surface plasmon. We also suggest that the SPR mode associated with the Au surface, which is extremely sensitive to changes in the surrounding environment, particularly (dielectric). A few considerations to be taken into account to attain the SPR, like the incident angle of light rays addressed and analyzed for the purpose of finding the essential value for the plasmon to be emerge; the gold/air resonance angle. Furthermore, we can compare our result with other work, which was performed by using the Finite-Element-Method (FEM), the simulation is done by FDTD (Finite Difference Time Domain) software. SPR was applied in a variety of domains, containing biomedicine science, optics, biomedicine, photo-thermal plasmon, and health.
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Sun, Rong Chun, Yu Chen, and Xue Hu. "Design of the High-Precision SPR System." Advanced Materials Research 442 (January 2012): 119–23. http://dx.doi.org/10.4028/www.scientific.net/amr.442.119.
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Surface plasmon resonance (SPR) technology is widely used in biochemistry sensing, drug analysis, environmental monitoring and other fields. Based on the principle of surface plasmon resonance, high-precision SPR system was developed by using Kretschmann model in this paper. Automatic control, data acquisition, real-time display and storage integration of SPR system have been achieved by Labview software in PC. The single sample test results show that the system has high accuracy and stability.
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Wan Ahamad, Wan Mohd Azwady, Dzaraini Kamarun, Mohd Kamil Abd Rahman, and Mohamad Shukri Kamarudin. "Modular Surface Plasmon Resonance (SPR) Biosensor Based on Wavelength Modulation." Advanced Materials Research 1107 (June 2015): 699–705. http://dx.doi.org/10.4028/www.scientific.net/amr.1107.699.
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This paper deals with a new invention of modular surface plasmon resonance (SPR) biosensor device based on wavelength modulation wherein the angle of incidence of the light source is fixed and the shift in wavelength at resonance is monitored. This device is capable of detecting biomolecular binding interactions of different species such as protein and viruses based on changes in the refractive index of the dielectric environment. White light source mounted with a polarizer is used to excite plasmons on the sensor surface which is thin gold film of ~21 μm thickness coated on BK-7 glass. A variable angle reflection sampling system (VARSS) device from Ocean Optics was modified to incorporate the transducer components and sampling accessories. SPR was observed at the angle of incidence of the light fixed at 29°. At this point, plasmon evanescent wave coupling occurred with highest loss of light intensity. HR4000-UV-NIR photodetector is used to observe the change in resonance wavelength when the dielectric environment around the surface of the transducer was changed. Two liquid samples; water (n=1.33) and ethylene glycol (n=1.43) was introduced onto the sensor surface to model changes in wavelength resonance with difference in refractive index of dielectric environment. It was observed that the resonance wavelength for water and ethylene glycol are 590.10 nm and 594.23 nm respectively when reference to air (n=1.00) indicating the workability of the device.
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Jalil, Muhammad Arif Bin, and Muhammad Aliff Ali Bin Che Abas. "Detection of Acetone Using Surface Plasmon Resonance." International Journal for Research in Applied Science and Engineering Technology 11, no. 1 (January 31, 2023): 1–4. http://dx.doi.org/10.22214/ijraset.2023.48285.
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Abstract: In most industries, detection of substances remains important as applications differ from the industry such as detections of materials for research, detection of toxic substances in liquids and more. There have been numerous ways of detection but few can only acquire data quickly and in real time such as SPR sensors. Surface Plasmon Resonance is an optical detection method that uses surface plasmons and spectroscopy that can only detect a particular substance. Using this technique can be applied for quick detection of substances which can help researchers and engineers to have a more solid precautionary equipment. For this project, the experimental setup has the characteristics of an SPR sensor; however the reflected light can be quickly transferred via fiber optic to a spectrometer and computer for instant results. To further elaborate and complement experimental data, simulations that show the dip of reflectivity of a certain angle at which is called resonance angle which can be done by using Lumerical.
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Liu, TianHang, SiMin Li, JunPeng Deng, GuoFu Wang, and YanSheng Liu. "Design and study of microfluidic differential phase surface plasmon resonance sensor." Journal of Physics: Conference Series 2206, no. 1 (February 1, 2022): 012026. http://dx.doi.org/10.1088/1742-6596/2206/1/012026.
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Abstract In this project we design and study a differential phase surface plasmon resonance sensor combining with microfluidic technology. The differential phase Surface Plasmon Resonance (SPR) sensor is constructed by applying the Kretschman plasmon excitation structure and combing with interference spectroscopy. Through making use of simulation and experimental method, the principle of SPR sensor is theoretically and experimentally studied. In this project, we apply the SPR sensor in testing urea solution with varying weight concentration. Through the results, it can be observed that the plasma resonance absorption ranges from 640 nm to 840 nm and its detection limits can reach 0.0004 RIU. Due to its tunable plasma absorption and lower detection limits, the microfluidic differential phase surface plasmon resonance sensor illustrates a promising future in chemistry, physics and biology.
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Myilsamy, Muthumanicam, Prabhakar Cecil Lordwin, Alagu Vibisha, Suresh Ponnan, Jaroszewicz Zbigniew, and Rajesh Karupiya Balasundaram. "Theoretical analysis of a high-performance surface plasmon resonance biosensor using BlueP/WS2 over Cu-Pt bimetallic layer." Photonics Letters of Poland 15, no. 2 (July 2, 2023): 18–20. http://dx.doi.org/10.4302/plp.v15i2.1206.
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The present theoretical study exhibits the possibility of achieving extremely high sensitive surface plasmon resonance based biosensor comprising of Cu-Pt bimetallic layer and BlueP/WS2 hybrid nanostructure for angular interrogation method. Based of Transfer matrix method thickness of Cu and Pt as well as the number of BlueP/WS2 layer is optimized to obtain the best possible sensitivity and FOM. The well optimized Cu-Pt-BlueP/WS2 hybridstructure is found to generate sensitivity as high as 502°/RIU with FOM as 128.7RIU-1 such sensor is highly useful for detecting biomolecules. Full Text: PDF References A.H.M. Almawgani, M.G. Daher, S.A. Taya, M. Mashagbeh, I. Colak. "Optical Detection of Fat Concentration in Milk Using MXene-Based Surface Plasmon Resonance Structure", Biosensors 12, 535 (2022). CrossRef E. Kretschmann, H. Raether, "Notizen: Radiative Decay of Non Radiative Surface Plasmons Excited by Light", Z. Naturf. a 23, 2135 (1968). CrossRef M.G. Daher, Y. Trabelsi, Y.K. Prajapati, A. Panda, N.M. Ahmed, A.N.Z. Rashed., "Highly sensitive detection of infected red blood cells (IRBCs) with plasmodium falciparum using surface plasmon resonance (SPR) nanostructure", Opt. Quantum Electron. 55, 199 (2023). CrossRef A.H.M. Almawgani, M.G. Daher, S.A. Taya, M.M. Olaimat, A.R.H. Alhawari, I. Colak., "Detection of Blood Plasma Concentration Theoretically Using SPR-Based Biosensor Employing Black Phosphor Layers and Different Metals", Plasmonics 17,1751 (2022). CrossRef Y. Saad, M. Selmi, M.H. Gazzah, A. Bajahzar, H. Belmabrouk, "Performance enhancement of a copper-based optical fiber SPR sensor by the addition of an oxide layer", Optik 190, 1 (2019). CrossRef N.K. Sharma, S. Shukla, V. Sajal, "Surface plasmon resonance based fiber optic sensor using an additional layer of platinum: A theoretical study", Optik 133, 43 (2017). CrossRef S. Shukla, M. Rani, N.K. Sharma, V. Sajal, "Sensitivity enhancement of a surface plasmon resonance based fiber optic sensor utilizing platinum layer", Optik 126, 4636 (2015). CrossRef S. Singh, A.K. Sharma, P. Lohia, D.K. Dwivedi, "Theoretical analysis of sensitivity enhancement of surface plasmon resonance biosensor with zinc oxide and blue phosphorus/MoS2 heterostructure", Optik 244, 167618 (2021). CrossRef N. Liu, S. Wang, Q. Cheng, B. Pang, J. Lv, "High Sensitivity in Ni-Based SPR Sensor of Blue Phosphorene/Transition Metal Dichalcogenides Hybrid Nanostructure", Plasmonics 16, 1567 (2021). CrossRef S. Shivangani, M.F. Alotaibi, Y. Al-Hadeethi, P. Lohia, S. Singh, D.K. Dwivedi, A. Umar, H.M. Alzayed, H. Algadi, S. Baskoutas, "Numerical Study to Enhance the Sensitivity of a Surface Plasmon Resonance Sensor with BlueP/WS2-Covered Al2O3-Nickel Nanofilms", Nanomater. Basel 12, 2205 (2022). CrossRef M. Yamamoto, "Surface Plasmon Resonance (SPR) Theory: Tutorial", Review of Polarography (JPN) 48, 209 (2002). CrossRef P.K. Maharana, T. Srivastava, R. Jha, "Low index dielectric mediated surface plasmon resonance sensor based on graphene for near infrared measurements", J. Phys. D: Appl. Phys. 47, 385102 (2014). CrossRef S. Pal, N. Pal, Y.K. Prajapati, J.P. Saini, "Sensitivity Analysis of Surface Plasmon Resonance Biosensor Based on Heterostructure of 2D BlueP/MoS2 and MXene", John Wiley & Sons, Inc. 103 (2020). CrossRef S. Singh, A.K. Sharma, P. Lohia, D.K. Dwivedi, "Sensitivity enhancement of SPR biosensor employing heterostructure blue phosphorus/MoS2 and silicon layer", Emerg. Mater. Res. 11, 239 (2022). CrossRef R. Kumar, S. Pal, N. Pal, V. Mishra, Y.K. Prajapati, "High-performance bimetallic surface plasmon resonance biochemical sensor using a black phosphorus–MXene hybrid structure", Appl. Phys. A 127, 1 (2021). CrossRef M. Setareh, H. Kaatuzian, "Sensitivity enhancement of a surface plasmon resonance sensor using Blue Phosphorene/MoS2 hetero-structure and barium titanate", Superlattices Microstruct. 153, 106867 (2021). CrossRef S. Wang, N. Liu, Q. Cheng, B. Pang, J. Lv, "Surface Plasmon Resonance on the Antimonene–Fe2O3–Copper Layer for Optical Attenuated Total Reflection Spectroscopic Application", Plasmonics 16, 559 (2021). CrossRef
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Choi, Jin-Ha, Jin-Ho Lee, Joohyung Son, and Jeong-Woo Choi. "Noble Metal-Assisted Surface Plasmon Resonance Immunosensors." Sensors 20, no. 4 (February 13, 2020): 1003. http://dx.doi.org/10.3390/s20041003.
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For the early diagnosis of several diseases, various biomarkers have been discovered and utilized through the measurement of concentrations in body fluids such as blood, urine, and saliva. The most representative analytical method for biomarker detection is an immunosensor, which exploits the specific antigen-antibody immunoreaction. Among diverse analytical methods, surface plasmon resonance (SPR)-based immunosensors are emerging as a potential detection platform due to high sensitivity, selectivity, and intuitive features. Particularly, SPR-based immunosensors could detect biomarkers without labeling of a specific detection probe, as typical immunosensors such as enzyme-linked immunosorbent assay (ELISA) use enzymes like horseradish peroxidase (HRP). In this review, SPR-based immunosensors utilizing noble metals such as Au and Ag as SPR-inducing factors for the measurement of different types of protein biomarkers, including viruses, microbes, and extracellular vesicles (EV), are briefly introduced.
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Balevičius, Zigmas. "Strong Coupling between Tamm and Surface Plasmons for Advanced Optical Bio-Sensing." Coatings 10, no. 12 (December 5, 2020): 1187. http://dx.doi.org/10.3390/coatings10121187.
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The total internal reflection ellipsometry method was used to analyse the angular spectra of the hybrid Tamm and surface plasmon modes and to compare their results with those obtained using the conventional single SPR method. As such type of measurement is quite common in commercial SPR devices, more detailed attention was paid to the analysis of the p-polarization reflection intensity dependence. The conducted study showed that the presence of strong coupling in the hybrid plasmonic modes increases the sensitivity of the plasmonic-based sensors due to the reduced losses in the metal layer. The experimental results and analysis of the optical responses of three different plasmonic-based samples indicated that the optimized Tamm plasmons ΔRp(TP) and optimized surface plasmons ΔRp(SP) samples produce a response that is about five and six times greater than the conventional surface plasmon resonance ΔRp(SPR) in angular spectra. The sensitivity of the refractive index unit of the spectroscopic measurements for the optimized Tamm plasmon samples was 1.5 times higher than for conventional SPR, while for wavelength scanning, the SPR overcame the optimized TP by 1.5 times.
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Huang, Tianye, Shuwen Zeng, Xiang Zhao, Zhuo Cheng, and Perry Shum. "Fano Resonance Enhanced Surface Plasmon Resonance Sensors Operating in Near-Infrared." Photonics 5, no. 3 (August 10, 2018): 23. http://dx.doi.org/10.3390/photonics5030023.
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In the phase-sensitivity-based surface plasmon resonance (SPR) sensing scheme, the highest phase jump usually happens at the darkness or quasi-darkness reflection point, which results in low power for detection. To overcome such a limitation, in this paper, a waveguide-coupled SPR configuration is proposed to work at near-infrared. The coupling between surface plasmon polariton (SPP) mode and photonic waveguide (PWG) mode results in electromagnetically induced transparency (EIT) and asymmetric Fano resonance (FR). Near the resonance, the differential phase between p-polarized and s-polarized incident waves experience drastic variation upon change of the surrounding refractive index. More importantly, since the FR occurs at the resonance slope of SPP mode, the corresponding phase change is accompanied with relatively high reflectivity, which is essential for signal-to-noise ratio (SNR) enhancement and power consumption reduction. Phase sensitivity up to 106 deg/RIU order with a minimum SPR reflectivity higher than 20% is achieved. The proposed scheme provides an alternative approach for high-performance sensing applications using FR.
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Bao, Yu, Bo Li, Yi Ran Guan, and Gui Fu Yang. "Amphetamine Detection Based on Surface Plasmon Resonance Techniques." Advanced Materials Research 143-144 (October 2010): 1056–58. http://dx.doi.org/10.4028/www.scientific.net/amr.143-144.1056.
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This paper introduced a new method for detection of amphetamine based on the Surface Plasmon Resonance (SPR) techniques. Experimental results show that SPR is approved to be a suitable approach for detection of amphetamine due to its unique properties such as label-free, real-time, high sensitivity, etc. By introducing such a SPR detection, 10μg/ml amphetamine could be easily detected and compounds with similar molecular structure are also expected suitable for SPR detection.
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Salamon, Zdzislaw, and Gordon Tollin. "Plasmon resonance spectroscopy: probing molecular interactions at surfaces and interfaces." Spectroscopy 15, no. 3,4 (2001): 161–75. http://dx.doi.org/10.1155/2001/907405.
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Surface plasmon resonance (SPR) spectroscopy can be applied to a wide variety of interfacial systems. It involves resonant excitation by polarized light of electronic oscillations (plasmons) in a thin metal film. These generate a surface‒localized evanescent electromagnetic field that can be used to probe the optical properties perpendicular to the film plane of materials immobilized at the surface. Spectra depend on three parameters: refractive index (n), absorption coefficient (k) and thickness (t). Maxwell's equations provide an analytical relationship between these properties and SPR spectra, allowing their evaluation. An extension of this methodology, called coupled plasmon‒waveguide resonance (CPWR or PWR), is able to characterize film propertiesbothperpendicular and parallel to the surface plane. In a PWR device, the metal film is covered with a dielectric coating that acts as an optical amplifier, provides protection for the metal layer, and possesses a surface that allows various molecular immobilization strategies. The exceptionally narrow line widths of PWR spectra yield enhanced sensitivity and resolution. The application of this technology to several biomembrane systems will be described, demonstrating its ability to observe both binding and structural events occurring during membrane protein function.
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Ivanov, A. S., and A. E. Medvedev. "Optical surface plasmon resonance biosensors in molecular fishing." Biomeditsinskaya Khimiya 61, no. 2 (2015): 231–38. http://dx.doi.org/10.18097/pbmc20156102231.
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An optical biosensor employing surface plasmon resonance is a highly efficient instrument applicable for direct real time registration of molecular interactions without additional use of any labels or coupled processes. As an independent approach it is especially effective in analysis of various ligand receptor interactions. SPR-biosensors are used for validation of studies on intermolecular interactions in complex biological systems (affinity profiling of various groups of proteins, etc.). Recently, potential application of the SPR-biosensor for molecular fishing (direct affinity binding of target molecules from complex biological mixtures on the optical biosensor surface followed by their elution for identification by LC-MS/MS) has been demonstrated. Using SPR-biosensors in such studies it is possible to solve the following tasks: (a) SPR-based selection of immobilization conditions required for the most effective affinity separation of a particular biological sample; (b) SPR-based molecular fishing for subsequent protein identification by mass spectrometry; (c) SPR-based validation of the interaction of identified proteins with immobilized ligand. This review considers practical application of the SPR technology in the context of recent studies performed in the Institute of Biomedical Chemistry on molecular fishing of real biological objects.
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AL-Janaby, Nidaa, and Anwaar AL-Dergazly. "Fabrication of multi-mode tip fiber sensor based on surface plasmon resonance (SPR)." Sustainable Engineering and Innovation 2, no. 1 (February 4, 2020): 10–17. http://dx.doi.org/10.37868/sei.v2i1.27.
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During this work, fiber optic sensor based on surface Plasmon resonance (SPR) was prepared. The sensor of SPR was configured by coating a thin layer of gold film on the end of a cleaved optical fiber by a sputtering technique. The source of white light was utilized to produce a series of wavelengths and excites surface Plasmon resonance at the fiber tip. SPR sensor was immersed into media with different refractive indexes in the range )1-1.58( including their similar Plasmon resonance wavelength shifts were saved by optical spectrum analyzer and noticed reflected light on a personal computer. Experimental results that obtained show there is a redshift when increasing the refractive index of solutions and sensitivity reach 298nm/ RIU, and resolution 4.31x .
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Olaru, Andreea, Camelia Bala, Nicole Jaffrezic-Renault, and Hassan Y. Aboul-Enein. "Surface Plasmon Resonance (SPR) Biosensors in Pharmaceutical Analysis." Critical Reviews in Analytical Chemistry 45, no. 2 (January 6, 2015): 97–105. http://dx.doi.org/10.1080/10408347.2014.881250.
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Eum, Nyeon-Sik, Do-Eok Kim, Se-Hyuk Yeom, Byoung-Ho Kang, Kyu-Jin Kim, Chang-Sub Park, and Shin-Won Kang. "Variable wavelength surface plasmon resonance (SPR) in biosensing." Biosystems 98, no. 1 (October 2009): 51–55. http://dx.doi.org/10.1016/j.biosystems.2009.05.008.
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Piliarik, Marek, and Jiří Homola. "Surface plasmon resonance (SPR) sensors: approaching their limits?" Optics Express 17, no. 19 (September 1, 2009): 16505. http://dx.doi.org/10.1364/oe.17.016505.
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Pechprasarn, Suejit, Kodchakorn Ittipornnuson, Thitika Jungpanich, Nattha Pensupa, and Naphat Albutt. "Surface Plasmon Biosensor Platform for Food Industry." Applied Mechanics and Materials 891 (May 2019): 103–8. http://dx.doi.org/10.4028/www.scientific.net/amm.891.103.
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Surface plasmon resonance (SPR) based biosensor is a gold standard optical sensor for biological protein interaction in life science. In this paper, we firstly discuss how the SPR based sensor can give unique advantages over other sensing techniques for food safety and food quality control in food industry. We discuss the differences in sample preparation process for the SPR system and other screening methods and point out that the SPR can reduce the food screen quality control cost and time. A brief review of food analysis that has been tested under SPR system. Key requirements for building up a surface plasmon resonance based sensor for food industry especially in Thailand are highlighted. An SPR based sensor has been recently developed and constructed based on the requirements. We also discuss practical issues and how to possibly get around them.
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Gao, Min, Yuhan He, Ying Chen, Tien-Mo Shih, Weimin Yang, Huanyang Chen, Zhilin Yang, and Zhaohui Wang. "Enhanced sum frequency generation for ultrasensitive characterization of plasmonic modes." Nanophotonics 9, no. 4 (February 24, 2020): 815–22. http://dx.doi.org/10.1515/nanoph-2019-0447.
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AbstractHighly sensitive characterization of surface plasmon resonance (SPR) modes lays the solid foundation for wide SPR-related applications. Herein, we discover that these SPR modes based on all-metal nanostructures without any probed molecule can be characterized with ultrahigh sensitivities at both excitation and emission wavelengths by utilizing plasmon-enhanced sum frequency generation (PESFG) spectroscopy. The theory of PESFG for sensitively characterizing SPR modes is first validated experimentally. Moreover, we have elaborately demonstrated that PESFG strongly depends on both the resonant wavelengths of SPR modes and spatial mode distributions when azimuthal angles of excitations are varied. Our study not only enhances the understanding of the mechanism that governs PESFG, but also offers a potentially new method for exploring new-style SPR modes (e.g. plasmon-induced magnetic resonance and bound states in the continuum) by PESFG.
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Wang, Xiao Ming, Chun Liu Zhao, Run Guang Yang, Yan Ru Wang, Fei Fei Shi, and Shang Zhong Jin. "Tapered Fiber-Optic Based Surface Plasmon Resonance Sensor." Applied Mechanics and Materials 738-739 (March 2015): 23–26. http://dx.doi.org/10.4028/www.scientific.net/amm.738-739.23.
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We propose a tapered fiber-optic based surface plasmon resonance (SPR) sensor. The plasmonic sensing is designed by coating the waist of tapered fiber-optic with gold. The transmission spectrum of SPR wavelength were investigated by 2D finite element method (FEM). The calculation shows that the dips of the resonance wavelength shift toward long wave direction with the thickness of gold film decreasing. And increasing the diameters of the waist core of tapered fiber-optic also makes the resonance wavelength shift long wave direction. Furthermore, changing the refractive index of the external samples from 1.333 to 1.343 with step of ~0.002, the SPR wavelength shifts linearly from 575.05nm to 472.5nm. Owing to its compact and simple configuration, it also provides a feasible program for the refractive index high sensitivity detection.Keywords: surface plasmon resonance (SPR); tapered fiber-optic sensor; surface plasma; finite element method (FEM); optical fiber sensor
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Gryga, Michal, Dalibor Ciprian, and Petr Hlubina. "Bloch Surface Wave Resonance Based Sensors as an Alternative to Surface Plasmon Resonance Sensors." Sensors 20, no. 18 (September 8, 2020): 5119. http://dx.doi.org/10.3390/s20185119.
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We report on a highly sensitive measurement of the relative humidity (RH) of moist air using both the surface plasmon resonance (SPR) and Bloch surface wave resonance (BSWR). Both resonances are resolved in the Kretschmann configuration when the wavelength interrogation method is utilized. The SPR is revealed for a multilayer plasmonic structure of SF10/Cr/Au, while the BSWR is resolved for a multilayer dielectric structure (MDS) comprising four bilayers of TiO2/SiO2 with a rough termination layer of TiO2. The SPR effect is manifested by a dip in the reflectance of a p-polarized wave, and a shift of the dip with the change in the RH, or equivalently with the change in the refractive index of moist air is revealed, giving a sensitivity in a range of 0.042–0.072 nm/%RH. The BSWR effect is manifested by a dip in the reflectance of the spectral interference of s- and p-polarized waves, which represents an effective approach in resolving the resonance with maximum depth. For the MDS under study, the BSWRs were resolved within two band gaps, and for moist air we obtained sensitivities of 0.021–0.038 nm/%RH and 0.046–0.065 nm/%RH, respectively. We also revealed that the SPR based RH measurement is with the figure of merit (FOM) up to 4.7 × 10−4 %RH−1, while BSWR based measurements have FOMs as high as 3.0 × 10−3 %RH−1 and 1.1 × 10−3 %RH−1, respectively. The obtained spectral interferometry based results demonstrate that the BSWR based sensor employing the available MDS has a similar sensitivity as the SPR based sensor, but outperforms it in the FOM. BSW based sensors employing dielectrics thus represent an effective alternative with a number of advantages, including better mechanical and chemical stability than metal films used in SPR sensing.
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Wang, Dongping, Jacky Loo, Jiajie Chen, Yeung Yam, Shih-Chi Chen, Hao He, Siu Kong, and Ho Ho. "Recent Advances in Surface Plasmon Resonance Imaging Sensors." Sensors 19, no. 6 (March 13, 2019): 1266. http://dx.doi.org/10.3390/s19061266.
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The surface plasmon resonance (SPR) sensor is an important tool widely used for studying binding kinetics between biomolecular species. The SPR approach offers unique advantages in light of its real-time and label-free sensing capabilities. Until now, nearly all established SPR instrumentation schemes are based on single- or several-channel configurations. With the emergence of drug screening and investigation of biomolecular interactions on a massive scale these days for finding more effective treatments of diseases, there is a growing demand for the development of high-throughput 2-D SPR sensor arrays based on imaging. The so-called SPR imaging (SPRi) approach has been explored intensively in recent years. This review aims to provide an up-to-date and concise summary of recent advances in SPRi. The specific focuses are on practical instrumentation designs and their respective biosensing applications in relation to molecular sensing, healthcare testing, and environmental screening.
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Nguyen, Tan Tai, and Kieu Vo Thi Diem. "Optical Sensors based on Surface Plasmon Resonance." Asian Journal of Chemistry 32, no. 12 (2020): 2953–59. http://dx.doi.org/10.14233/ajchem.2020.22921.
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This brief review presents the recent process in optical sensors based on surface plasmon resonance (SPR). In particular, it will focus on the optical sensors that employ the change of refractive index as the sensing transduction signal. Various detection schemes of optical sensors which include phase modulation, wavelength modulation and intensity modulation are discussed. The performance advantageous and disadvantageous of the description of optical sensors structure and their respective experimental configurations are also described. The examples of detection in chemistry, biology and heavy metals will be presented. Future prospects of surface plasmon resonance (SPR) sensing technology is also discussed.
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Guo, Haomin, Qi Hu, Chengyun Zhang, Haiwen Liu, Runmin Wu, and Shusheng Pan. "Strong Plasmon-Mie Resonance in Si@Pd Core-Ω Shell Nanocavity." Materials 16, no. 4 (February 9, 2023): 1453. http://dx.doi.org/10.3390/ma16041453.
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The surface plasmon resonance (SPR) and localized surface plasmon resonance (LSPR) can be used to enhance the generation of the hot electrons in plasmon metal nanocavity. In this paper, Pd nanomembrane (NMB) is sputtered on the surface of Si nanosphere (NS) on glass substrate to form the Si@Pd core-Ω shell nanocavity. A plasmon-Mie resonance is induced in the nanocavity by coupling the plasmon resonance with the Mie resonance to control the optical property of Si NS. When this nanocavity is excited by near-infrared-1 (NIR-1, 650 nm–900 nm) femtosecond (fs) laser, the luminescence intensity of Si NS is dramatically enhanced due to the synergistic interaction of plasmon and Mie resonance. The generation of resonance coupling regulates resonant mode of the nanocavity to realize multi-dimensional nonlinear optical response, which can be utilized in the fields of biological imaging and nanoscale light source.
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Ibrahim, Joyce, Mostafa Al Masri, Isabelle Verrier, Thomas Kampfe, Colette Veillas, Frédéric Celle, Serge Cioulachtjian, Frédéric Lefèvre, and Yves Jourlin. "Surface Plasmon Resonance Based Temperature Sensors in Liquid Environment." Sensors 19, no. 15 (July 31, 2019): 3354. http://dx.doi.org/10.3390/s19153354.
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The aim of this work is to measure the temperature variations by analyzing the plasmon signature on a metallic surface that is periodically structured and immersed in a liquid. A change in the temperature of the sample surface induces a modification of the local refractive index leading to a shift of the surface plasmon resonance (SPR) frequency due to the strong interaction between the evanescent electric field and the metallic surface. The experimental set-up used in this study to detect the refractive index changes is based on a metallic grating permitting a direct excitation of a plasmon wave, leading to a high sensibility, high-temperature range and contactless sensor within a very compact and simple device. The experimental set-up demonstrated that SPR could be used as a non-invasive, high-resolution temperature measurement method for metallic surfaces.
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Kadhum, F. J., S. H. Kafi, A. J. Karam, A. A. Al-Zuky, M. F. H. Al-Kadhemy, and A. H. Al- Saleh. "Simulation of surface plasmon resonance (SPR) layers of gold with silicon nitride as a Bi-layer biosensor." Digest Journal of Nanomaterials and Biostructures 17, no. 2 (April 2022): 623–33. http://dx.doi.org/10.15251/djnb.2022.172.623.
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Surface Plasmon Resonance (SPR) has gotten a lot of attention in biomedical sensing. Many applications in medical diagnostics and single molecule detection have sparked interest in bio-sensing techniques. Surface Plasmon resonance (SPR) is an important phenomenon used for building sensors especially in the Biological fields. Simulation analysis (in Mat lab) has been made for SPR for gold (Au) layer with thickness (40 nm) and layer of silicon nitride (Si3N4) with different thickness (10- 70 nm) step 10, deposited on glass prism type N-LASF9_ glass with the sensitive layer was water at refractive index (∆n = 0, 0.01, 0.05 and 0.1). The analysis was taken for different wavelengths from UltraViolet wavelength 100 nm to Near Infra- Red wavelength 1000 nm. The properties of the surface Plasmon resonance angle (θSPR) have been calculated from plotted reflectance against incident angle θincid shows sharper resonance dip, narrower full width half maximum (FWHM), SPR dip length (Ld) increased so that improve in properties SPR and system. The SPR sensitivity (S) was calculated and recorded higher sensitivity about 134.
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Mandke, Mohanrao V., and Habib M. Pathan. "Multipole Surface Plasmon Resonance in Electrodeposited Gold Nanoparticles." International Journal of Nanoscience 13, no. 02 (April 2014): 1450014. http://dx.doi.org/10.1142/s0219581x14500148.
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Electrodeposition is a convenient, economical and template-free tool to create the gold nanostructures. A two-electrode electrochemical process is used for the deposition process. In this method by controlling the deposition time and electrode potential, nearly spherical and rod-like gold nanostructures were synthesized through the reduction of Chlorauric acid with citric acid as a complexing agent. Spherical gold nanostructures of different size around 2 nm to 30 nm and rod-like nanostructures with an aspect ratio 0.5 were grown directly on fluorine-doped tin oxide (FTO)-coated glass substrate. The growth mechanism of gold nanostructures is explained with the help of oriented attachment process. The contact angle measurement showed the hydrophilic nature of gold nanostructures using water with contact angle of about 56°. The optical properties showed a dipole, quadrupole and an octupole plasmon resonance mode at around 625 nm, 530 nm and 422 nm respectively. The dipole resonance peak extends further to give a broad absorption band in the near infrared region of electromagnetic waves. The refractive index sensitivity of gold nanoparticles in various solvents was investigated by calculating the red shift of surface plasmon resonance (SPR) peaks. The quadrupole plasmon resonance mode showed maximum SPR sensitivity as compared to dipole and octupole plasmon resonance mode. The controlled formation of gold nanoparticles with variation of SPR over wide range of visible region supports the potential applications in biosensors, nanoelectronics and plasmon enhanced light absorption in photovoltaics, etc.
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Topor, Cristina-Virginia, Mihaela Puiu, and Camelia Bala. "Strategies for Surface Design in Surface Plasmon Resonance (SPR) Sensing." Biosensors 13, no. 4 (April 7, 2023): 465. http://dx.doi.org/10.3390/bios13040465.
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Surface plasmon resonance (SPR) comprises several surface-sensitive techniques that enable the trace and ultra-trace detection of various analytes through affinity pairing. Although enabling label-free, sensitive detection and real-time monitoring, several issues remain to be addressed, such as poor stability, non-specific adsorption and the loss of operational activity of biomolecules. In this review, the progress over sensor modification, immobilization techniques and novel 2D nanomaterials, gold nanostructures and magnetic nanoparticles for signal amplification is discussed. The advantages and disadvantages of each design strategy will be provided together with some of the recent achievements.
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Zain, H. A., M. Batumalay, Z. Harith, H. R. A. Rahim, and S. W. Harun. "Machine learning algorithms for surface plasmon resonance bio-detection applications, A short review." Journal of Physics: Conference Series 2411, no. 1 (December 1, 2022): 012013. http://dx.doi.org/10.1088/1742-6596/2411/1/012013.
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Abstract Surface plasmon resonance (SPR) sensors have many applications in detecting toxic gases, water pollutants, and biomarkers of many diseases. Surface plasmon resonance sensors are a good candidate for future sensing platforms due to their high sensitivity and fine resolution. However, the challenges of high cost, cross-sensitivity, and large amount of generated data need to be addressed to unlock surface plasmon resonance potential. Machine learning (ML) algorithms can address these challenges. In this short review, recent studies integrating the algorithms of Artificial Intelligence (AI) and Machine Learning (ML) with (SPR) sensing mechanisms for bio-detection applications are presented here. This short review shows how the integrated approach can help mitigate some of the challenges faced by traditional SPR sensing.
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Zhao, Hongxia, Feng Wang, Zhaojia Han, Peihong Cheng, and Zhiqun Ding. "Research Advances on Fiber-Optic SPR Sensors with Temperature Self-Compensation." Sensors 23, no. 2 (January 6, 2023): 644. http://dx.doi.org/10.3390/s23020644.
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The fiber-optic surface plasmon resonance sensor has very promising applications in environmental monitoring, biochemical sensing, and medical diagnosis, due to the superiority of high sensitivity and novel label-free microstructure. However, the influence of ambient temperature is inevitable in practical sensing applications, and even the higher the sensitivity, the greater the influence. Therefore, how to eliminate temperature interference in the sensing process has become one of the hot issues of this research field in recent years, and some accomplishments have been achieved. This paper mainly reviews the research results on temperature self-compensating fiber-optic surface plasmon sensors. Firstly, it introduces the mechanism of a temperature self-compensating fiber-optic surface plasmon resonance sensor. Then, the latest development of temperature self-compensated sensor is reviewed from the perspective of various fiber-optic sensing structures. Finally, this paper discusses the most recent applications and development prospects of temperature self-compensated fiber-optic surface plasmon resonance sensors.
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Kaušaitė, Asta, Almira Ramanavičienė, Viktoras Mostovojus, and Arūnas Ramanavičius. "Surface plasmon resonance and its application to biomedical research." Medicina 43, no. 5 (April 22, 2007): 355. http://dx.doi.org/10.3390/medicina43050044.
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In the recent years, surface plasmon resonance (SPR) has become one of the major methods for studying and determination of biologically active materials exhibiting affinity interactions. SRP biosensors are increasingly used in biochemistry and bioanalytical chemistry to determine antibody-antigen interactions, to investigate DNA hybridization, to diagnose bacteria- and virus-induced diseases, to identify hormones, steroids, and immunoglobulins, to investigate blood plasma coagulation. Using SPR biosensors, it is possible to analyze the mixtures of substances with a very similar chemical structure because SPR allows identifying only those analytes that specifically interact with biologically active substance immobilized on the surface of SPR biosensor. SPR biosensors are applied to monitor interactions between immobilized biologically active substance and analyte in real-time without labeling. On the other hand, it is possible to investigate not only association of analyte with immobilized material, but also the dissociation of a newly formed complex. SPR biosensors in many cases may be used to perform up to 50 measurements with the same SPR chip with an immobilized biological recognition element. Therefore, at present SPR is one of the most promising methods for determining the interactions between ligand and receptor, antigen and antibody, thus being increasingly used in diagnostics and biomedical research.
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Xu, Liang, Hongwei Wang, and Wenhui Si. "Surface Plasmon Resonance Sterilization 3D Imaging Technology Considering the Engineering Hue Algorithm." Mobile Information Systems 2022 (April 20, 2022): 1–11. http://dx.doi.org/10.1155/2022/3623963.
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The high-resolution dynamic observation of the phenomenon of impossible surface plasmon resonance sterilization is conducted which resulted from the quality problems in the imaging process of traditional surface plasmon resonance sterilization 3D imaging technology. Surface plasmon resonance (SPR) technology is mainly based on the physical-optical properties generated by the optical coupling of metal thin films, and flexible optical analysis methods are used to improve the quality and efficiency of SPR sterilization 3D imaging. In this paper, the engineering hue algorithm is introduced into the 3D imaging process of surface plasmon resonance sterilization, and the front-end imaging system composed of the objective lens, distributed elements, focusing mirrors, and probes is used to obtain the corresponding surface plasmon resonance sterilization spectrum data on the back-end processor and quickly send the imaging calculation amount from the front-end to the back-end. Meanwhile, combined with 3D imaging, dislocation data processing technology, and multiframe reconstruction method, the reconstruction accuracy is improved, and memory space is released to speed up data processing. Finally, the experimental analysis shows that the engineering hue algorithm is used in the process of surface plasmon resonance sterilization 3D imaging, which can complete the superresolution plasmon resonance sterilization 3D imaging, and the obtained imaging effect is good, the data processing speed is fast, and it can be observed in surface plasmon resonance sterilization imaging with wide amplitude, high resolution, and low power consumption.
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Wang, Qi, Zi-Han Ren, Wan-Ming Zhao, Lei Wang, Xin Yan, Ai-song Zhu, Feng-mei Qiu, and Ke-Ke Zhang. "Research advances on surface plasmon resonance biosensors." Nanoscale 14, no. 3 (2022): 564–91. http://dx.doi.org/10.1039/d1nr05400g.
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The surface plasmon resonance (SPR) phenomenon is of wide interest due to its sensitivity to changes in surface refractive index for the label-free, highly sensitive and rapid detection of biomarkers.
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Das, Sreyashi, Ram Devireddy, and Manas Ranjan Gartia. "Surface Plasmon Resonance (SPR) Sensor for Cancer Biomarker Detection." Biosensors 13, no. 3 (March 17, 2023): 396. http://dx.doi.org/10.3390/bios13030396.
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A biomarker is a physiological observable marker that acts as a stand-in and, in the best-case scenario, forecasts a clinically significant outcome. Diagnostic biomarkers are more convenient and cost-effective than directly measuring the ultimate clinical outcome. Cancer is among the most prominent global health problems and a major cause of morbidity and death globally. Therefore, cancer biomarker assays that are trustworthy, consistent, precise, and verified are desperately needed. Biomarker-based tumor detection holds a lot of promise for improving disease knowledge at the molecular scale and early detection and surveillance. In contrast to conventional approaches, surface plasmon resonance (SPR) allows for the quick and less invasive screening of a variety of circulating indicators, such as circulating tumor DNA (ctDNA), microRNA (miRNA), circulating tumor cells (CTCs), lipids, and proteins. With several advantages, the SPR technique is a particularly beneficial choice for the point-of-care identification of biomarkers. As a result, it enables the timely detection of tumor markers, which could be used to track cancer development and suppress the relapse of malignant tumors. This review emphasizes advancements in SPR biosensing technologies for cancer detection.
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Chang, Chia-Chen. "Recent Advancements in Aptamer-Based Surface Plasmon Resonance Biosensing Strategies." Biosensors 11, no. 7 (July 10, 2021): 233. http://dx.doi.org/10.3390/bios11070233.
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Surface plasmon resonance (SPR) can track molecular interactions in real time, and is a powerful as well as widely used biological and chemical sensing technique. Among the different SPR-based sensing applications, aptamer-based SPR biosensors have attracted significant attention because of their simplicity, feasibility, and low cost for target detection. Continuous developments in SPR aptasensing research have led to the emergence of abundant technical and design concepts. To understand the recent advances in SPR for biosensing, this paper reviews SPR-based research from the last seven years based on different sensing-type strategies and sub-directions. The characteristics of various SPR-based applications are introduced. We hope that this review will guide the development of SPR aptamer sensors for healthcare.
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Gupta, B. D., and R. K. Verma. "Surface Plasmon Resonance-Based Fiber Optic Sensors: Principle, Probe Designs, and Some Applications." Journal of Sensors 2009 (2009): 1–12. http://dx.doi.org/10.1155/2009/979761.
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Surface plasmon resonance technique in collaboration with optical fiber technology has brought tremendous advancements in sensing of various physical, chemical, and biochemical parameters. In this review article, we present the principle of SPR technique for sensing and various designs of the fiber optic SPR probe reported for the enhancement of the sensitivity of the sensor. In addition, we present few examples of the surface plasmon resonance- (SPR-) based fiber optic sensors. The present review may provide researchers valuable information regarding fiber optic SPR sensors and encourage them to take this area for further research and development.
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Yeshchenko, O. A., and A. O. Pinchuk. "Thermo-Optical Effects in Plasmonic Metal Nanostructures." Ukrainian Journal of Physics 66, no. 2 (March 4, 2021): 112. http://dx.doi.org/10.15407/ujpe66.2.112.
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The effects of the temperature on the surface plasmon resonance (SPR) in noble metal nanoparticles at various temperatures ranging from 77 to 1190 K are reviewed. A temperature increase results in an appreciable red shift and leads to a broadening of the SPR in the nanoparticles (NPs). This observed thermal expansion along with an increase in the electron-phonon scattering rate with rising temperature emerge as the dominant physical mechanisms producing the red shift and broadening of the SPR. Strong temperature dependence of surface plasmon enhanced photoluminescence from silver (Ag) and copper (Cu) NPs is observed. The quantum photoluminescence yield of Ag nanoparticles decreases as the temperature increases, due to a decrease in the plasmon enhancement resulting from an increase in the electron-phonon scattering rate. An anomalous temperature dependence of the photoluminescence from Cu nanoparticles was also observed; the quantum yield of photoluminescence increases with the temperature. The interplay between the SPR and the interband transitions plays a critical role in this effect. The surface-plasmon involved laser heating of a dense 2D layer of gold (Au) NPs and of Au NPs in water colloids is also examined. A strong increase in the Au NP temperature occurs, when the laser frequency approaches the SPR. This finding supports the resonant plasmonic character of the laser heating of metal NPs. The sharp blue shift of the surface plasmon resonance in colloidal Au NPs at temperatures exceeding the water boiling point indicates the vapor-bubble formation near the surface of the NPs.
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Lertvachirapaiboon, Chutiparn, Akira Baba, Kazunari Shinbo, and Keizo Kato. "A smartphone-based surface plasmon resonance platform." Analytical Methods 10, no. 39 (2018): 4732–40. http://dx.doi.org/10.1039/c8ay01561a.
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This review provides an overview of smartphone-based SPR platforms in both reflection and transmission configurations, typical setups, and examples of their use in the analysis of chemical and biological samples.
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Englebienne, Patrick, Anne Van Hoonacker, and Michel Verhas. "Surface plasmon resonance: principles, methods and applications in biomedical sciences." Spectroscopy 17, no. 2-3 (2003): 255–73. http://dx.doi.org/10.1155/2003/372913.
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Surface plasmon resonance (SPR) is a phenomenon occuring at metal surfaces (typically gold and silver) when an incident light beam strikes the surface at a particular angle. Depending on the thickness of a molecular layer at the metal surface, the SPR phenomenon results in a graded reduction in intensity of the reflected light. Biomedical applications take advantage of the exquisite sensitivity of SPR to the refractive index of the medium next to the metal surface, which makes it possible to measure accurately the adsorption of molecules on the metal surface and their eventual interactions with specific ligands. The last ten years have seen a tremendous development of SPR use in biomedical applications. The technique is applied not only to the measurement in real-time of the kinetics of ligand–receptor interactions and to the screening of lead compounds in the pharmaceutical industry, but also to the measurement of DNA hybridization, enzyme–substrate interactions, in polyclonal antibody characterization, epitope mapping, protein conformation studies and label-free immunoassays. Conventional SPR is applied in specialized biosensing instruments. These instruments use expensive sensor chips of limited reuse capacity and require complex chemistry for ligand or protein immobilization. Our laboratory has successfully applied SPR with colloidal gold particles in buffered solution. This application offers many advantages over conventional SPR. The support is cheap, easily synthesized, and can be coated with various proteins or protein–ligand complexes by charge adsorption. With colloidal gold, the SPR phenomenon can be monitored in any UV-vis spectrophotometer. For high‒throughput applications, we have adapted the technology in an automated clinical chemistry analyzer. This simple technology finds application in label-free quantitative immunoassay techniques for proteins and small analytes, in conformational studies with proteins as well as in the real-time association-dissociation measurements of receptor–ligand interactions, for high-throughput screening and lead optimization.
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Habib, Md Mortuza, Ruddro Roy, Md Mojidul Islam, Mehedi Hassan, Md Muztahidul Islam, and Md Biplob Hossain. "Study of Graphene-MoS2 Based SPR Biosensor with Graphene Based SPR Biosensor: Comparative Approach." International Journal of Natural Sciences Research 7, no. 1 (March 29, 2019): 1–9. http://dx.doi.org/10.18488/journal.63.2019.71.1.9.
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In this paper, we compare the sensitivity of graphene-MoS2 based surface plasmon resonance (SPR) biosensor to graphene based SPR biosensor. Here, graphene is used as biomolecular recognition element (BRE) because of its high adsorption ability and optical characteristics which helps to improve sensor sensitivity, on the other hand MoS2 is used for it has larger band gap, high fluroscence quenching ability, higher optical absorption efficiency which improves further sensor sensitivity. In DNA hybridization event, numerically achieved results show that single layer of graphene-MoS2 based SPR biosensor is 175% more sensitive than single layer of graphene coated SPR biosensor. Surface plasmon resonance angle and spectrum of reflected power are numerically investigated for different concentrated complementary DNA strands. The variations of SPR angle is significantly computable for complementary DNA strands whereas these parameters are varied negligibly for mismatched DNA strands. Thus the proposed sensor effectively differentiates hybridization and single nucleotide polymorphisms (SNP) by examining the level of changes in SPR angle and reflected power spectrum.
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Gandhiraman, Ram P., Gowri Manickam, Laura Kerr, Chandra K. Dixit, Colin Doyle, David E. Williams, and Stephen Daniels. "Plasma-Fabricated Surface Plasmon Resonance Chip for Biosensing." Australian Journal of Chemistry 68, no. 3 (2015): 447. http://dx.doi.org/10.1071/ch14324.
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This work reports the fabrication of a biosensing chip surface designed for plasmonic detection, and features a layer of noble metal nanoparticles encapsulated as a sandwich within amine-functionalized polysiloxane layers formed by plasma-enhanced chemical vapour deposition. The collective surface plasmon resonance (CSPR) phenomenon characteristic of a dense particle layer is demonstrated for encapsulated gold nanoparticles of different diameters. Biomolecular immobilization is carried out through the amine functional groups that are part of the encapsulating layer. The detection of biomolecular binding events at the sensor surface is demonstrated both by a shift in resonance wavelength at constant angle of incidence using SPR-enhanced spectroscopic ellipsometry and by detecting the angular shift in resonance in a commercial SPR instrument (Biacore®). Taken with other results, this work shows how a complete SPR chip can be assembled by a rapid sequence of operations in a single plasma chamber.
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DU, CHAN, LE LIU, JUN GUO, YONGHONG HE, JIHUA GUO, SHUQING SUN, and HUI MA. "A BIOSENSOR USING COUPLED PLASMON WAVEGUIDE RESONANCE COMBINED WITH HYPERSPECTRAL FLUORESCENCE ANALYSIS." Journal of Innovative Optical Health Sciences 07, no. 01 (January 2014): 1450017. http://dx.doi.org/10.1142/s1793545814500175.
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We developed a biosensor that is capable for simultaneous surface plasmon resonance (SPR) sensing and hyperspectral fluorescence analysis in this paper. A symmetrical metal-dielectric slab scheme is employed for the excitation of coupled plasmon waveguide resonance (CPWR) in the present work. Resonance between surface plasmon mode and the guided waveguide mode generates narrower full width half-maximum of the reflective curves which leads to increased precision for the determination of refractive index over conventional SPR sensors. In addition, CPWR also offers longer surface propagation depths and higher surface electric field strengths that enable the excitation of fluorescence with hyperspectral technique to maintain an appreciable signal-to-noise ratio. The refractive index information obtained from SPR sensing and the chemical properties obtained through hyperspectral fluorescence analysis confirm each other to exclude false-positive or false-negative cases. The sensor provides a comprehensive understanding of the biological events on the sensor chips.
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Kanezawa, Masahito, Genki Iizuka, Eri Ayano, Hideko Kanazawa, Yoshikatsu Akiyama, Akihiko Kikuchi, and Teruo Okano. "Analysis of protein using Handy-SPR(Surface Plasmon Resonance)." Journal of Life Support Engineering 17, Supplement (2005): 162. http://dx.doi.org/10.5136/lifesupport.17.supplement_162.
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Gu, Yiying, Jiahui Yang, Jiayi Zhao, Yang Zhang, Shuangyue Yang, Jingjing Hu, and Mingshan Zhao. "Novel polymer waveguide-based surface plasmon resonance (SPR) sensor." Instrumentation Science & Technology 48, no. 3 (December 30, 2019): 269–86. http://dx.doi.org/10.1080/10739149.2019.1706556.
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Mavri, Jan, Peter Raspor, and Mladen Franko. "Application of chromogenic reagents in surface plasmon resonance (SPR)." Biosensors and Bioelectronics 22, no. 6 (January 2007): 1163–67. http://dx.doi.org/10.1016/j.bios.2006.07.018.
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Geddes, Chris D. "30 Years of Surface Plasmon Resonance (SPR) for Biosensing." Plasmonics 9, no. 4 (August 2014): 727. http://dx.doi.org/10.1007/s11468-014-9763-7.
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