Pub Date : 2022-05-12DOI: 10.1080/10739149.2022.2073451
Jian Huang, Dan Yang, Geng Lv, Zhulin Wei, T. Cheng
Abstract A D-shaped photonic crystal fiber (PCF) polarization filter and sensor with a standard hexagonal arrangement of pores is designed. The effects of geometric parameters, metal film thickness, liquid refractive index, and optical material refractive index on polarization filtering and sensing characteristics are analyzed by the finite element method (FEM). The proposed PCF shows single-polarization filtering in communication window and has ultra-high corresponding bandwidth. At the 1.55 µm communication window band, the confinement loss of the y-polarized core mode is 819.27 dB/cm, while the x-polarized core mode is only 3.45 dB/cm. The crosstalk (CT) reached a maximum of 708.6 dB in the communication bands, and the corresponding bandwidth reaches 1000 µm when the fiber length is 1 mm. Meanwhile, the D-type PCF is widely used in sensing because it avoids filling the gold film and analyte in the internal pores. The change in the thickness of the mental coating from 39 nm to 22 nm provides the proposed PCF with sensing properties. By reducing the refractive index of fiber material, the maximum sensitivity is 10,741 nm/RIU. When the refractive index measurement range of the analyte is specified from 1.33 to 1.36, the average sensitivity reaches 7313 nm/RIU. Good performance enables the proposed compatible filtering and sensing PCF may be used in a wide range of scenarios.
{"title":"Surface plasmon resonance (SPR)-based D-shaped photonic crystal fiber polarization filter and refractive index sensor with a hexagonal pore structure","authors":"Jian Huang, Dan Yang, Geng Lv, Zhulin Wei, T. Cheng","doi":"10.1080/10739149.2022.2073451","DOIUrl":"https://doi.org/10.1080/10739149.2022.2073451","url":null,"abstract":"Abstract A D-shaped photonic crystal fiber (PCF) polarization filter and sensor with a standard hexagonal arrangement of pores is designed. The effects of geometric parameters, metal film thickness, liquid refractive index, and optical material refractive index on polarization filtering and sensing characteristics are analyzed by the finite element method (FEM). The proposed PCF shows single-polarization filtering in communication window and has ultra-high corresponding bandwidth. At the 1.55 µm communication window band, the confinement loss of the y-polarized core mode is 819.27 dB/cm, while the x-polarized core mode is only 3.45 dB/cm. The crosstalk (CT) reached a maximum of 708.6 dB in the communication bands, and the corresponding bandwidth reaches 1000 µm when the fiber length is 1 mm. Meanwhile, the D-type PCF is widely used in sensing because it avoids filling the gold film and analyte in the internal pores. The change in the thickness of the mental coating from 39 nm to 22 nm provides the proposed PCF with sensing properties. By reducing the refractive index of fiber material, the maximum sensitivity is 10,741 nm/RIU. When the refractive index measurement range of the analyte is specified from 1.33 to 1.36, the average sensitivity reaches 7313 nm/RIU. Good performance enables the proposed compatible filtering and sensing PCF may be used in a wide range of scenarios.","PeriodicalId":13547,"journal":{"name":"Instrumentation Science & Technology","volume":"50 1","pages":"668 - 683"},"PeriodicalIF":1.6,"publicationDate":"2022-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45077064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-05-02DOI: 10.1080/10739149.2022.2070919
Muhammad Saqaf Jagirani, F. Uzcan, M. Soylak
Abstract The present study describes a facile and environmentally friendly hydrothermal method for the fabrication of metal decorated silica-based core-shell magnetic nanocomposite M@Si-MNCs, applied as a sustainable coating material for the solid-phase microextraction of toxic cadmium ions. M@Si-MNCs were characterized by scanning electron microscopy, X-ray-diffraction, Fourier transform infrared spectroscopy and Brunauer–Emmett–Teller analyzer. Relevant parameters have been studied to obtain maximum recovery, including pH, adsorbent dosage, model solution volume, - adsorption and desorption time, and matrix effects. The developed method obtained excellent linearity from 50 to 500 µg/L with a limit of detection of 1.2 µg/L and a limit of quantification of 4.1 µg/L. The new method was applied for separation, preconcentration and determination of cadmium in environmental and tobacco samples.
{"title":"Metal decorated silica-based core-shell magnetic nanocomposite for the solid-phase microextraction of cadmium(II) with determination by high-resolution continuum source flame atomic absorption spectrometry","authors":"Muhammad Saqaf Jagirani, F. Uzcan, M. Soylak","doi":"10.1080/10739149.2022.2070919","DOIUrl":"https://doi.org/10.1080/10739149.2022.2070919","url":null,"abstract":"Abstract The present study describes a facile and environmentally friendly hydrothermal method for the fabrication of metal decorated silica-based core-shell magnetic nanocomposite M@Si-MNCs, applied as a sustainable coating material for the solid-phase microextraction of toxic cadmium ions. M@Si-MNCs were characterized by scanning electron microscopy, X-ray-diffraction, Fourier transform infrared spectroscopy and Brunauer–Emmett–Teller analyzer. Relevant parameters have been studied to obtain maximum recovery, including pH, adsorbent dosage, model solution volume, - adsorption and desorption time, and matrix effects. The developed method obtained excellent linearity from 50 to 500 µg/L with a limit of detection of 1.2 µg/L and a limit of quantification of 4.1 µg/L. The new method was applied for separation, preconcentration and determination of cadmium in environmental and tobacco samples.","PeriodicalId":13547,"journal":{"name":"Instrumentation Science & Technology","volume":"50 1","pages":"637 - 653"},"PeriodicalIF":1.6,"publicationDate":"2022-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43735842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Accurate optical fiber current transducer based on the Faraday magneto-optical effect is described for high voltage direct current (HVDC) transmission. The transducer may be used to measure DC and high-order harmonic currents in a ± 800 kV DC transmission field. The performance characteristics of sensitivity, non-linearity, temperature stability, and harmonic accuracy of the prototype were investigated. The results show that the scale factor error in the −40 °C to 70 °C range is below ±0.2%. The presented optical fiber current transducer has potential applications for HVDC detection fields, such as for a polarity bus and a converter valve bridge arm.
{"title":"Accurate optical fiber current transducer for high-voltage direct current (HVDC) transmission","authors":"Haifeng Liu, Hongjie Guo, Manqing Tan, Qin Li, X. Meng, Xu Yang","doi":"10.1080/10739149.2022.2053152","DOIUrl":"https://doi.org/10.1080/10739149.2022.2053152","url":null,"abstract":"Abstract Accurate optical fiber current transducer based on the Faraday magneto-optical effect is described for high voltage direct current (HVDC) transmission. The transducer may be used to measure DC and high-order harmonic currents in a ± 800 kV DC transmission field. The performance characteristics of sensitivity, non-linearity, temperature stability, and harmonic accuracy of the prototype were investigated. The results show that the scale factor error in the −40 °C to 70 °C range is below ±0.2%. The presented optical fiber current transducer has potential applications for HVDC detection fields, such as for a polarity bus and a converter valve bridge arm.","PeriodicalId":13547,"journal":{"name":"Instrumentation Science & Technology","volume":"50 1","pages":"604 - 615"},"PeriodicalIF":1.6,"publicationDate":"2022-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42230212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-22DOI: 10.1080/10739149.2022.2053153
Bhagavathi Chalil Najathulla, A. Deshpande, M. Khandelwal
Abstract Simple and reliable methods for displacement measurements are needed in the areas of sensing, monitoring and actuation. The common methods to measure displacements suffer from issues such as high cost, need for installation space, precise alignment and disturbances in continuous measurements. This paper presents a simple method utilizing a smartphone camera as the primary video capturing device with Matlab to track and measure the deflection of an actuator. The method is validated with known measurements using a microscope micrometer. Further, this paper demonstrates usage of the developed method for measuring the deflection of an actuator based on poly (3,4-ethylene dioxythiophene) polystyrene sulfonate (PEDOT: PSS) with a least count of 29 microns.
{"title":"Smartphone camera-based micron-scale displacement measurement: development and application in soft actuators","authors":"Bhagavathi Chalil Najathulla, A. Deshpande, M. Khandelwal","doi":"10.1080/10739149.2022.2053153","DOIUrl":"https://doi.org/10.1080/10739149.2022.2053153","url":null,"abstract":"Abstract Simple and reliable methods for displacement measurements are needed in the areas of sensing, monitoring and actuation. The common methods to measure displacements suffer from issues such as high cost, need for installation space, precise alignment and disturbances in continuous measurements. This paper presents a simple method utilizing a smartphone camera as the primary video capturing device with Matlab to track and measure the deflection of an actuator. The method is validated with known measurements using a microscope micrometer. Further, this paper demonstrates usage of the developed method for measuring the deflection of an actuator based on poly (3,4-ethylene dioxythiophene) polystyrene sulfonate (PEDOT: PSS) with a least count of 29 microns.","PeriodicalId":13547,"journal":{"name":"Instrumentation Science & Technology","volume":"50 1","pages":"616 - 625"},"PeriodicalIF":1.6,"publicationDate":"2022-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47337453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-15DOI: 10.1080/10739149.2022.2050752
Ze-Ying Hao, Yao Liu, Zhou Zhao, Qi Wang
Abstract Although surface plasmon resonance (SPR) methods are frequently employed due to their remarkable advantages such as reduced sample requirements, they confront a significant challenge in terms of sensitivity improvement. GeSe is an appropriate material for resolving this issue. According to the theoretical basis of the research, GeSe is a two-dimensional material which is a direct band gap semiconductor that may be utilized to promote electron transport and stimulate greater SPR phenomena. The first use of GeSe in an optical fiber sensor is reported in this study. A U-shaped optical fiber-GeSe-Au sensor is proposed. As a two-dimensional material with comparable physical characteristics to GeSe, MoS2 is compared to GeSe to characterize its influence upon the sensitivity. The sensitivity of fiber-GeSe-Au sensor is 7398.1 nm/refractive index unit (RIU), which is nearly twice as sensitive as a gold film SPR sensor and 1.5 times as sensitive as a sensor utilizing MoS2 nanosheets with the same structure. This study introduces a novel approach for enhancing the sensitivity, which gives a new option for monitoring biological substances at low concentrations with high sensitivity and stability and demonstrates that GeSe nanosheets have significant promise for future applications.
{"title":"Highly sensitive gold-film surface plasmon resonance (SPR) sensor employing germanium selenide (GeSe) nanosheets","authors":"Ze-Ying Hao, Yao Liu, Zhou Zhao, Qi Wang","doi":"10.1080/10739149.2022.2050752","DOIUrl":"https://doi.org/10.1080/10739149.2022.2050752","url":null,"abstract":"Abstract Although surface plasmon resonance (SPR) methods are frequently employed due to their remarkable advantages such as reduced sample requirements, they confront a significant challenge in terms of sensitivity improvement. GeSe is an appropriate material for resolving this issue. According to the theoretical basis of the research, GeSe is a two-dimensional material which is a direct band gap semiconductor that may be utilized to promote electron transport and stimulate greater SPR phenomena. The first use of GeSe in an optical fiber sensor is reported in this study. A U-shaped optical fiber-GeSe-Au sensor is proposed. As a two-dimensional material with comparable physical characteristics to GeSe, MoS2 is compared to GeSe to characterize its influence upon the sensitivity. The sensitivity of fiber-GeSe-Au sensor is 7398.1 nm/refractive index unit (RIU), which is nearly twice as sensitive as a gold film SPR sensor and 1.5 times as sensitive as a sensor utilizing MoS2 nanosheets with the same structure. This study introduces a novel approach for enhancing the sensitivity, which gives a new option for monitoring biological substances at low concentrations with high sensitivity and stability and demonstrates that GeSe nanosheets have significant promise for future applications.","PeriodicalId":13547,"journal":{"name":"Instrumentation Science & Technology","volume":"50 1","pages":"577 - 588"},"PeriodicalIF":1.6,"publicationDate":"2022-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45186157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-14DOI: 10.1080/10739149.2022.2051182
Haizhou Zheng, Jia-Ying Yang, Qi Wang, Bin Feng, Ruifeng An
Abstract A new gold film-molybdenum disulfide (MoS2)-hexagonal boron nitride (h-BN) three-layer sensing structure is reported for sensing applications. The strong photoelectric conversion of MoS2 and the wide forbidden band of h-BN are used to enhance the surface plasmon resonance of the gold film which greatly enhance the sensitivity of the sensor. The Au film was deposited on the optical fiber by controlled vacuum sputtering to monitor the thickness. The MoS2 nanolayer was deposited on the surface of the gold film by electrostatic adsorption and the hexagonal boron nitride nanolayer was subsequently superimposed to complete the preparation. The sensitivity of the prepared sensor was increased to 3803.0 nm/RIU, which is 71.5% higher than for the common gold film sensor. These results confirmed that this approach significantly upgraded the sensor performance. The newly proposed SPR sensor performed well using a simple structure, is low-cost, offers high accuracy and favorable specificity, and may be used for small molecule detection for medical applications.
{"title":"Sensitivity enhancement of fiber surface plasmon resonance (SPR) sensor based upon a gold film-hexagonal boron nitride—molybdenum disulfide structure","authors":"Haizhou Zheng, Jia-Ying Yang, Qi Wang, Bin Feng, Ruifeng An","doi":"10.1080/10739149.2022.2051182","DOIUrl":"https://doi.org/10.1080/10739149.2022.2051182","url":null,"abstract":"Abstract A new gold film-molybdenum disulfide (MoS2)-hexagonal boron nitride (h-BN) three-layer sensing structure is reported for sensing applications. The strong photoelectric conversion of MoS2 and the wide forbidden band of h-BN are used to enhance the surface plasmon resonance of the gold film which greatly enhance the sensitivity of the sensor. The Au film was deposited on the optical fiber by controlled vacuum sputtering to monitor the thickness. The MoS2 nanolayer was deposited on the surface of the gold film by electrostatic adsorption and the hexagonal boron nitride nanolayer was subsequently superimposed to complete the preparation. The sensitivity of the prepared sensor was increased to 3803.0 nm/RIU, which is 71.5% higher than for the common gold film sensor. These results confirmed that this approach significantly upgraded the sensor performance. The newly proposed SPR sensor performed well using a simple structure, is low-cost, offers high accuracy and favorable specificity, and may be used for small molecule detection for medical applications.","PeriodicalId":13547,"journal":{"name":"Instrumentation Science & Technology","volume":"50 1","pages":"589 - 603"},"PeriodicalIF":1.6,"publicationDate":"2022-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46764199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-09DOI: 10.1080/10739149.2022.2048008
Dan Yang, W. Guo, T. Cheng, Zhulin Wei, Bin Xu
Abstract Dispersion is a factor that causes the axial resolution to decrease in optical coherence tomography (OCT). In this paper, an artificial neural network (ANN) is reported for correcting the dispersion problem. By training a neural network, the dispersion-free spectral signal is predicted only from a given interference spectral signal. First, the dispersion principle of OCT is analyzed. Next, the process for finding the global optimum of dispersion-free spectral signal distribution is described as a training process, and the ANN model is introduced. Lastly, simulation and experiments show that the presented method improves the axial resolution of the system. Accordingly, the ANN model fits the non-linear relationship between input and output, and the spectral response shows the problem of full width at half maximum (FWHM) due to dispersion in OCT which is of great significance.
{"title":"Artificial neural network (ANN) for dispersion compensation of spectral domain – optical coherence tomography (SD-OCT)","authors":"Dan Yang, W. Guo, T. Cheng, Zhulin Wei, Bin Xu","doi":"10.1080/10739149.2022.2048008","DOIUrl":"https://doi.org/10.1080/10739149.2022.2048008","url":null,"abstract":"Abstract Dispersion is a factor that causes the axial resolution to decrease in optical coherence tomography (OCT). In this paper, an artificial neural network (ANN) is reported for correcting the dispersion problem. By training a neural network, the dispersion-free spectral signal is predicted only from a given interference spectral signal. First, the dispersion principle of OCT is analyzed. Next, the process for finding the global optimum of dispersion-free spectral signal distribution is described as a training process, and the ANN model is introduced. Lastly, simulation and experiments show that the presented method improves the axial resolution of the system. Accordingly, the ANN model fits the non-linear relationship between input and output, and the spectral response shows the problem of full width at half maximum (FWHM) due to dispersion in OCT which is of great significance.","PeriodicalId":13547,"journal":{"name":"Instrumentation Science & Technology","volume":"33 1","pages":"560 - 576"},"PeriodicalIF":1.6,"publicationDate":"2022-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60136515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-04DOI: 10.1080/10739149.2022.2047061
Fatih Akkoyun
Abstract Multi/hyperspectral imaging is an important technique to obtain color data and spectral monitoring. It is a precise remote sensing technique that includes two or more bands in the visible and invisible spectrum. This study demonstrates the design and construction of a low-cost, multispectral imaging system using a single linear array sensor and a varifocal lens coupled to individual spectral band-pass filters. The system allows the automated data acquisition of raw spectral data for seven spectral bands, each with different wavelengths. The raw data are visualized in real-time to generate images of spectral bands to obtain the desired spectral information on the computer graphical screen. Sensor arrays with spectral responsivity between 0.3 and 1.05 μm and motorized filter disks with a linear guide are used for acquiring data from specific wavelengths. Axis movement of the imaging device is achieved by a linear guide for spatial monitoring. Seven different bands are scanned and transferred to the computer via motorized band-pass filter sets with the imaging device. The multispectral imaging device has high accuracy with a 0.9936 linear correlation coefficient (r2) and averaged noise of the total system is below 1% (0.7%). Although the present configuration uses seven spectral bands including visible and narrow bandpass optical filters to obtain multispectral information from an object, the system is designed to have a replaceable and selectable motorized rotating filter, easily remounted, and adjusted up to forty spectral bands with 20 nm full width at half maximum (FWHM).
{"title":"Inexpensive multispectral imaging device","authors":"Fatih Akkoyun","doi":"10.1080/10739149.2022.2047061","DOIUrl":"https://doi.org/10.1080/10739149.2022.2047061","url":null,"abstract":"Abstract Multi/hyperspectral imaging is an important technique to obtain color data and spectral monitoring. It is a precise remote sensing technique that includes two or more bands in the visible and invisible spectrum. This study demonstrates the design and construction of a low-cost, multispectral imaging system using a single linear array sensor and a varifocal lens coupled to individual spectral band-pass filters. The system allows the automated data acquisition of raw spectral data for seven spectral bands, each with different wavelengths. The raw data are visualized in real-time to generate images of spectral bands to obtain the desired spectral information on the computer graphical screen. Sensor arrays with spectral responsivity between 0.3 and 1.05 μm and motorized filter disks with a linear guide are used for acquiring data from specific wavelengths. Axis movement of the imaging device is achieved by a linear guide for spatial monitoring. Seven different bands are scanned and transferred to the computer via motorized band-pass filter sets with the imaging device. The multispectral imaging device has high accuracy with a 0.9936 linear correlation coefficient (r2) and averaged noise of the total system is below 1% (0.7%). Although the present configuration uses seven spectral bands including visible and narrow bandpass optical filters to obtain multispectral information from an object, the system is designed to have a replaceable and selectable motorized rotating filter, easily remounted, and adjusted up to forty spectral bands with 20 nm full width at half maximum (FWHM).","PeriodicalId":13547,"journal":{"name":"Instrumentation Science & Technology","volume":"50 1","pages":"543 - 559"},"PeriodicalIF":1.6,"publicationDate":"2022-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45684859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-02-27DOI: 10.1080/10739149.2022.2044845
Zhou Zhao, Qi Wang
Abstract Scholars in the field of surface plasmon resonance (SPR) sensors have long been devoted into tackling the question of improving sensitivity while maintaining high-level stability and re-usability. Presented in this paper is a highly sensible SPR fiber sensor established on gold nanoparticle (AuNPs)/graphene oxide (GO) heterostructures and Au film coupling enhancement. The local electric field enhancement of the gold nanoparticle/graphene oxide heterostructure and gold film coupling, together with the sensitivity of the sensor, was analyzed using a finite element method. Theoretical results have provided evidence that this structure is efficient in enhancing the surface plasmon polariton (SPP) coupling, the local electric field, and the depth of electric field propagation outwards, while significantly improving the sensitivity of the sensor. Sensors with single- and double-layer gold nanoparticle/graphene oxide and enhanced Au film coupling were prepared with refractive index (RI) sensitivities of 2899.4 nm/RIU and 3436.2 nm/RIU, respectively, 37.92% and 63.46% higher than for conventional gold film sensors. Due to the chemical bonding of graphene oxide, the materials on the sensor have shown considerably robust interconnections, and the performance of the sensor remains almost unaffected after many measurements. Promising stability and reusability have been demonstrated, presenting favorable prospects for practical applications.
{"title":"Gold nanoparticles (AuNPs) and graphene oxide heterostructures with gold film coupling for an enhanced sensitivity surface plasmon resonance (SPR) fiber sensor","authors":"Zhou Zhao, Qi Wang","doi":"10.1080/10739149.2022.2044845","DOIUrl":"https://doi.org/10.1080/10739149.2022.2044845","url":null,"abstract":"Abstract Scholars in the field of surface plasmon resonance (SPR) sensors have long been devoted into tackling the question of improving sensitivity while maintaining high-level stability and re-usability. Presented in this paper is a highly sensible SPR fiber sensor established on gold nanoparticle (AuNPs)/graphene oxide (GO) heterostructures and Au film coupling enhancement. The local electric field enhancement of the gold nanoparticle/graphene oxide heterostructure and gold film coupling, together with the sensitivity of the sensor, was analyzed using a finite element method. Theoretical results have provided evidence that this structure is efficient in enhancing the surface plasmon polariton (SPP) coupling, the local electric field, and the depth of electric field propagation outwards, while significantly improving the sensitivity of the sensor. Sensors with single- and double-layer gold nanoparticle/graphene oxide and enhanced Au film coupling were prepared with refractive index (RI) sensitivities of 2899.4 nm/RIU and 3436.2 nm/RIU, respectively, 37.92% and 63.46% higher than for conventional gold film sensors. Due to the chemical bonding of graphene oxide, the materials on the sensor have shown considerably robust interconnections, and the performance of the sensor remains almost unaffected after many measurements. Promising stability and reusability have been demonstrated, presenting favorable prospects for practical applications.","PeriodicalId":13547,"journal":{"name":"Instrumentation Science & Technology","volume":"50 1","pages":"530 - 542"},"PeriodicalIF":1.6,"publicationDate":"2022-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41398734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-02-24DOI: 10.1080/10739149.2022.2043357
Hassen Khazri, G. Boczkaj, I. Ghorbel-Abid, M. Trabelsi-ayadi
Abstract The paper presents a novel pine bark based biosorbent for solid-phase extraction (SPE). The morphology and composition of the pine bark were characterized using Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The biosorbent was used for the preparation of wastewater for the determination of phenylbutazone, sulfamethazine, carbendazim, and linuron by high performance liquid chromatography with ultraviolet detection (HPLC-UV). The SPE conditions were optimized with respect to elution solvent, sample volume, and extraction pH. The results showed that developed sorbent provides good repeatability. The relative standard deviation (n = 3), was between 0.3 and 2.2%. The limits of detection (LOD) were between 0.11 and 0.4 µg.L−1. The developed method was used for determination of the analytes in effluent from a wastewater treatment plant.
{"title":"Determination of phenylbutazone, sulfamethazine, carbendazim and linuron using a novel pine bark biosorbent for solid-phase extraction (SPE) with high-performance liquid chromatography (HPLC)","authors":"Hassen Khazri, G. Boczkaj, I. Ghorbel-Abid, M. Trabelsi-ayadi","doi":"10.1080/10739149.2022.2043357","DOIUrl":"https://doi.org/10.1080/10739149.2022.2043357","url":null,"abstract":"Abstract The paper presents a novel pine bark based biosorbent for solid-phase extraction (SPE). The morphology and composition of the pine bark were characterized using Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The biosorbent was used for the preparation of wastewater for the determination of phenylbutazone, sulfamethazine, carbendazim, and linuron by high performance liquid chromatography with ultraviolet detection (HPLC-UV). The SPE conditions were optimized with respect to elution solvent, sample volume, and extraction pH. The results showed that developed sorbent provides good repeatability. The relative standard deviation (n = 3), was between 0.3 and 2.2%. The limits of detection (LOD) were between 0.11 and 0.4 µg.L−1. The developed method was used for determination of the analytes in effluent from a wastewater treatment plant.","PeriodicalId":13547,"journal":{"name":"Instrumentation Science & Technology","volume":"50 1","pages":"507 - 519"},"PeriodicalIF":1.6,"publicationDate":"2022-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42515556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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