Pub Date : 2022-11-08DOI: 10.1080/05704928.2022.2130351
E. Buchan, M. Hardy, Paulo de Carvalho Gomes, Liam Kelleher, H. Chu, P. Oppenheimer
{"title":"Emerging Raman spectroscopy and saliva-based diagnostics: from challenges to applications","authors":"E. Buchan, M. Hardy, Paulo de Carvalho Gomes, Liam Kelleher, H. Chu, P. Oppenheimer","doi":"10.1080/05704928.2022.2130351","DOIUrl":"https://doi.org/10.1080/05704928.2022.2130351","url":null,"abstract":"","PeriodicalId":8100,"journal":{"name":"Applied Spectroscopy Reviews","volume":"1 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2022-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89225236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-28DOI: 10.1080/05704928.2022.2138423
K. Kotaška, J. Werle, B. Hosnedlova, R. Kizek, R. Průša
Abstract Urolithiasis is one of the most frequently occurring diseases worldwide. Its management is related on investigation of concretion composition which helps to assess the current therapy. Fourier-transform infrared (FTIR) spectrometry gains significant importance because of its ability to determine concretion composition. Presented review shows the use of FTIR spectroscopy in detection of the very rare urinary stones including cyanoacrylate and pyrophosphate. Infrared spectroscopy made possible to identify the nature of the concretions and helped in management of urolithiasis.
{"title":"Use of Fourier transform infrared (FTIR) spectroscopy to detect rarely occurring cyanoacrylate and pyrophosphate urine stones","authors":"K. Kotaška, J. Werle, B. Hosnedlova, R. Kizek, R. Průša","doi":"10.1080/05704928.2022.2138423","DOIUrl":"https://doi.org/10.1080/05704928.2022.2138423","url":null,"abstract":"Abstract Urolithiasis is one of the most frequently occurring diseases worldwide. Its management is related on investigation of concretion composition which helps to assess the current therapy. Fourier-transform infrared (FTIR) spectrometry gains significant importance because of its ability to determine concretion composition. Presented review shows the use of FTIR spectroscopy in detection of the very rare urinary stones including cyanoacrylate and pyrophosphate. Infrared spectroscopy made possible to identify the nature of the concretions and helped in management of urolithiasis.","PeriodicalId":8100,"journal":{"name":"Applied Spectroscopy Reviews","volume":"20 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74760844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-21DOI: 10.1080/05704928.2022.2136192
O. A. Al-Najjar, Y. Wudil, U. F. Ahmad, Omar S. Baghabra Al-Amoudi, M. Al-Osta, M. A. Gondal
Abstract Laser-induced breakdown spectroscopy (LIBS) is a remarkable elemental detection and quantification technique used in various fields, including science, medicine, engineering, and industries. This review focuses on the recent progress and challenges in applying LIBS for geotechnical engineering applications. The paper also discusses the widely employed calibration-free LIBS methods such as chemometrics, artificial neural networks (ANN), and support vector machine (SVM) for quantifying constituent elements. The various applications of LIBS in geosciences, such as in mineralogy, soil studies, rocks investigations, and fluid analysis, have also been presented. Despite the robustness of LIBS in soil studies, it is hitherto challenging to investigate some soil physical parameters. In general, chemical applications such as contamination detection and nutrients are based on detecting certain elements or ions. On the other hand, physical and mechanical applications such as soil texture and soil humification degree may require the usage of a correlation between the chemical elements and the desired parameters. This work, therefore, summarizes how LIBS works with different materials and its current uses in determining the physical or mechanical properties of soils and presents the possibilities of this technology in the field of Geotechnical Engineering.
{"title":"Applications of laser induced breakdown spectroscopy in geotechnical engineering: a critical review of recent developments, perspectives and challenges","authors":"O. A. Al-Najjar, Y. Wudil, U. F. Ahmad, Omar S. Baghabra Al-Amoudi, M. Al-Osta, M. A. Gondal","doi":"10.1080/05704928.2022.2136192","DOIUrl":"https://doi.org/10.1080/05704928.2022.2136192","url":null,"abstract":"Abstract Laser-induced breakdown spectroscopy (LIBS) is a remarkable elemental detection and quantification technique used in various fields, including science, medicine, engineering, and industries. This review focuses on the recent progress and challenges in applying LIBS for geotechnical engineering applications. The paper also discusses the widely employed calibration-free LIBS methods such as chemometrics, artificial neural networks (ANN), and support vector machine (SVM) for quantifying constituent elements. The various applications of LIBS in geosciences, such as in mineralogy, soil studies, rocks investigations, and fluid analysis, have also been presented. Despite the robustness of LIBS in soil studies, it is hitherto challenging to investigate some soil physical parameters. In general, chemical applications such as contamination detection and nutrients are based on detecting certain elements or ions. On the other hand, physical and mechanical applications such as soil texture and soil humification degree may require the usage of a correlation between the chemical elements and the desired parameters. This work, therefore, summarizes how LIBS works with different materials and its current uses in determining the physical or mechanical properties of soils and presents the possibilities of this technology in the field of Geotechnical Engineering.","PeriodicalId":8100,"journal":{"name":"Applied Spectroscopy Reviews","volume":"43 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2022-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78507792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-20DOI: 10.1080/05704928.2022.2085734
Mila Ródenas García, A. Spinazzè, P. Branco, F. Borghi, G. Villena, A. Cattaneo, A. Di Gilio, V. Mihucz, E. Gómez Álvarez, S. I. Lopes, B. Bergmans, C. Orłowski, K. Karatzas, Gonçalo Marques, J. Saffell, S. Sousa
Abstract Humans spend the majority of their time indoors, where they are potentially exposed to hazardous pollutants. Within this context, over the past few years, there has been an upsurge of low-cost sensors (LCS) for the measurement of indoor air pollutants, motivated both by recent technological advances and by increased awareness of indoor air quality (IAQ) and its potential negative health impacts. Although not meeting the performance requirements for reference regulatory-equivalent monitoring indoors, LCS can provide informative measurements, offering an opportunity for high-resolution monitoring, emission source identification, exposure mitigation and managing IAQ and energy efficiency, among others. This article discusses the strengths and limitations that LCS offer for applications in the field of IAQ monitoring; it provides an overview of existing sensor technologies and gives recommendations for different indoor applications, considering their performance in the complex indoor environment and discussing future trends.
{"title":"Review of low-cost sensors for indoor air quality: Features and applications","authors":"Mila Ródenas García, A. Spinazzè, P. Branco, F. Borghi, G. Villena, A. Cattaneo, A. Di Gilio, V. Mihucz, E. Gómez Álvarez, S. I. Lopes, B. Bergmans, C. Orłowski, K. Karatzas, Gonçalo Marques, J. Saffell, S. Sousa","doi":"10.1080/05704928.2022.2085734","DOIUrl":"https://doi.org/10.1080/05704928.2022.2085734","url":null,"abstract":"Abstract Humans spend the majority of their time indoors, where they are potentially exposed to hazardous pollutants. Within this context, over the past few years, there has been an upsurge of low-cost sensors (LCS) for the measurement of indoor air pollutants, motivated both by recent technological advances and by increased awareness of indoor air quality (IAQ) and its potential negative health impacts. Although not meeting the performance requirements for reference regulatory-equivalent monitoring indoors, LCS can provide informative measurements, offering an opportunity for high-resolution monitoring, emission source identification, exposure mitigation and managing IAQ and energy efficiency, among others. This article discusses the strengths and limitations that LCS offer for applications in the field of IAQ monitoring; it provides an overview of existing sensor technologies and gives recommendations for different indoor applications, considering their performance in the complex indoor environment and discussing future trends.","PeriodicalId":8100,"journal":{"name":"Applied Spectroscopy Reviews","volume":"1 1","pages":"747 - 779"},"PeriodicalIF":6.1,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89226868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-18DOI: 10.1080/05704928.2022.2134145
Xin Chen, Kelin Hu, Jinrong Zhou, Xin Yuan, Mei Zhang, Ke Huang, Yi Pan
{"title":"Critical evaluation of the application of filter-assisted separation in analytical atomic spectrometry","authors":"Xin Chen, Kelin Hu, Jinrong Zhou, Xin Yuan, Mei Zhang, Ke Huang, Yi Pan","doi":"10.1080/05704928.2022.2134145","DOIUrl":"https://doi.org/10.1080/05704928.2022.2134145","url":null,"abstract":"","PeriodicalId":8100,"journal":{"name":"Applied Spectroscopy Reviews","volume":"85 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2022-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80515870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-13DOI: 10.1080/05704928.2022.2130350
Yongsheng Zhang, Yaxiong He, W. Zhou, Guanqin Mo, Hui Chen, Tao Xu
Abstract Total reflection X-ray fluorescence (TXRF) has been widely considered as an effective analytical tool for the analysis of a great variety type of polymetallic deposits, because it has many advantages of extremely high sensitivity, high accuracy, minor sample preparation, and the ability of multielement simultaneous analysis. Sample preparation is quite important for TXRF quantitative analysis. Since pretreatment factors, such as sample amount, dispersant type, sample particle size and sample physicochemical properties, are seriously impact the accuracy of results. Based on this reason, investigating an appropriate sample pretreatment strategy is fundamental for accurate assessment of strategic metal elements in polymetallic deposits. This review presents a comprehensive overview of TXRF applications in the field of mineral analysis, including apatite, manganese ore, K-feldspars, granite, copper-nickel sulfide ore, etc. Moreover, the accurate evaluation of TXRF quantitative analysis is detailedly discussed, and the relevant sample preparation methods and preparation factors are also addressed.
{"title":"Review on the elemental analysis of polymetallic deposits by total-reflection X-ray fluorescence spectrometry","authors":"Yongsheng Zhang, Yaxiong He, W. Zhou, Guanqin Mo, Hui Chen, Tao Xu","doi":"10.1080/05704928.2022.2130350","DOIUrl":"https://doi.org/10.1080/05704928.2022.2130350","url":null,"abstract":"Abstract Total reflection X-ray fluorescence (TXRF) has been widely considered as an effective analytical tool for the analysis of a great variety type of polymetallic deposits, because it has many advantages of extremely high sensitivity, high accuracy, minor sample preparation, and the ability of multielement simultaneous analysis. Sample preparation is quite important for TXRF quantitative analysis. Since pretreatment factors, such as sample amount, dispersant type, sample particle size and sample physicochemical properties, are seriously impact the accuracy of results. Based on this reason, investigating an appropriate sample pretreatment strategy is fundamental for accurate assessment of strategic metal elements in polymetallic deposits. This review presents a comprehensive overview of TXRF applications in the field of mineral analysis, including apatite, manganese ore, K-feldspars, granite, copper-nickel sulfide ore, etc. Moreover, the accurate evaluation of TXRF quantitative analysis is detailedly discussed, and the relevant sample preparation methods and preparation factors are also addressed.","PeriodicalId":8100,"journal":{"name":"Applied Spectroscopy Reviews","volume":"100 1","pages":"428 - 441"},"PeriodicalIF":6.1,"publicationDate":"2022-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80306043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Corrosion inhibitors are widely employed to retard metal corrosion. Highly sensitive detection and adsorption mechanism analysis are the two important aspects for the systematic research of corrosion inhibitors. Surface-enhanced Raman scattering (SERS) spectroscopy has emerged as a promising tool for the high-resolution detection and inhibition mechanism analysis of corrosion inhibitors in recent decades, and is of considerable importance for their selection and optimization. This paper provides an overview of the SERS technique in the study of corrosion inhibitors adsorbed on noble metals (SERS active substrates) and transition metals (non-SERS active substrates). After surface roughening, the SERS enhancement of metal electrodes can be significantly improved, which intensifies the Raman signals of adsorbed inhibitors to provide sufficient information regarding the binding state and adsorption orientation. In addition to roughening the metal surface to obtain strong SERS signals, novel SERS sensors that can amplify the Raman signals of inhibitors regardless of the type or surface state of the metal substrates are introduced, which is conductive to facilitating the real-time detection of inhibitors. The challenges and future prospects of SERS technique in corrosion inhibitor research are discussed. In summary, SERS technique is expected to promote the research development and engineering applications of corrosion inhibitors.
{"title":"Surface-enhanced Raman scattering (SERS) spectroscopy of corrosion inhibitors: High-resolution detection, adsorption property, and inhibition mechanism","authors":"Jinke Wang, Lingwei Ma, Xiaolun Ding, Shan Wu, Xin Guo, Dawei Zhang","doi":"10.1080/05704928.2022.2129667","DOIUrl":"https://doi.org/10.1080/05704928.2022.2129667","url":null,"abstract":"Abstract Corrosion inhibitors are widely employed to retard metal corrosion. Highly sensitive detection and adsorption mechanism analysis are the two important aspects for the systematic research of corrosion inhibitors. Surface-enhanced Raman scattering (SERS) spectroscopy has emerged as a promising tool for the high-resolution detection and inhibition mechanism analysis of corrosion inhibitors in recent decades, and is of considerable importance for their selection and optimization. This paper provides an overview of the SERS technique in the study of corrosion inhibitors adsorbed on noble metals (SERS active substrates) and transition metals (non-SERS active substrates). After surface roughening, the SERS enhancement of metal electrodes can be significantly improved, which intensifies the Raman signals of adsorbed inhibitors to provide sufficient information regarding the binding state and adsorption orientation. In addition to roughening the metal surface to obtain strong SERS signals, novel SERS sensors that can amplify the Raman signals of inhibitors regardless of the type or surface state of the metal substrates are introduced, which is conductive to facilitating the real-time detection of inhibitors. The challenges and future prospects of SERS technique in corrosion inhibitor research are discussed. In summary, SERS technique is expected to promote the research development and engineering applications of corrosion inhibitors.","PeriodicalId":8100,"journal":{"name":"Applied Spectroscopy Reviews","volume":"18 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2022-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72811045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-03DOI: 10.1080/05704928.2022.2128365
M. Knadel, F. Castaldi, R. Barbetti, E. Ben-Dor, A. Gholizadeh, R. Lorenzetti
Abstract Visible–near-infrared–shortwave-infrared (VNIR–SWIR) spectroscopy is one of the most promising sensing techniques to meet ever-growing demands for soil information and data. To ensure the successful application of this technique in the field, efficient methods for tackling detrimental moisture effects on soil spectra are critical. In this paper, mathematical techniques for reducing or removing the effects of soil moisture content (SMC) from spectra are reviewed. The reviewed techniques encompass the most common spectral pre-processing and algorithms, as well as less frequently reported methods including approaches within the remote sensing domain. Examples of studies describing their effectiveness in the search for calibration model improvement are provided. Moreover, the advantages and disadvantages of the different techniques are summarized. Future research including further studies on a wider range of soil types, in-field conditions, and systematic experiments considering several SMC levels to enable the definition of threshold values for the effectiveness of the discussed methods is recommended.
{"title":"Mathematical techniques to remove moisture effects from visible–near-infrared–shortwave-infrared soil spectra—review ","authors":"M. Knadel, F. Castaldi, R. Barbetti, E. Ben-Dor, A. Gholizadeh, R. Lorenzetti","doi":"10.1080/05704928.2022.2128365","DOIUrl":"https://doi.org/10.1080/05704928.2022.2128365","url":null,"abstract":"Abstract Visible–near-infrared–shortwave-infrared (VNIR–SWIR) spectroscopy is one of the most promising sensing techniques to meet ever-growing demands for soil information and data. To ensure the successful application of this technique in the field, efficient methods for tackling detrimental moisture effects on soil spectra are critical. In this paper, mathematical techniques for reducing or removing the effects of soil moisture content (SMC) from spectra are reviewed. The reviewed techniques encompass the most common spectral pre-processing and algorithms, as well as less frequently reported methods including approaches within the remote sensing domain. Examples of studies describing their effectiveness in the search for calibration model improvement are provided. Moreover, the advantages and disadvantages of the different techniques are summarized. Future research including further studies on a wider range of soil types, in-field conditions, and systematic experiments considering several SMC levels to enable the definition of threshold values for the effectiveness of the discussed methods is recommended.","PeriodicalId":8100,"journal":{"name":"Applied Spectroscopy Reviews","volume":"59 1","pages":"629 - 662"},"PeriodicalIF":6.1,"publicationDate":"2022-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89351177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-08-24DOI: 10.1080/05704928.2022.2113537
Vanessa J. Ferreira, Fernanda B. S. Virgens, Laís N. Pires, F. Dias, V. Lemos, L. Teixeira
Abstract X-ray fluorescence spectrometry (XRF) has been widely used for multi-element determination in various samples. However, when trace level determination is required, separation and preconcentration procedures are often used as a step before detection to avoid or reduce interferences and to increase sensitivity. Liquid-phase extraction (LPE) is one of the most well-known and applied pretreatment techniques associated with atomic spectrometry due to its simplicity, speed, and ease of automation. A review of methods involving LPE combined with XRF is presented. Methods described in the literature are discussed, involving conventional LPE and the three main categories of liquid-phase microextraction (LPME): single-drop microextraction (SDME), dispersive liquid–liquid microextraction (DLLME), and hollow fiber liquid-phase microextraction (HF-LPME). Characteristics of the methods are presented, considering experimental aspects, analytical features, advantages, and disadvantages. In addition, trends in the association between LPME techniques and XRF are presented.
{"title":"Liquid-phase extraction combined with X-ray fluorescence spectrometry for the elemental determination","authors":"Vanessa J. Ferreira, Fernanda B. S. Virgens, Laís N. Pires, F. Dias, V. Lemos, L. Teixeira","doi":"10.1080/05704928.2022.2113537","DOIUrl":"https://doi.org/10.1080/05704928.2022.2113537","url":null,"abstract":"Abstract X-ray fluorescence spectrometry (XRF) has been widely used for multi-element determination in various samples. However, when trace level determination is required, separation and preconcentration procedures are often used as a step before detection to avoid or reduce interferences and to increase sensitivity. Liquid-phase extraction (LPE) is one of the most well-known and applied pretreatment techniques associated with atomic spectrometry due to its simplicity, speed, and ease of automation. A review of methods involving LPE combined with XRF is presented. Methods described in the literature are discussed, involving conventional LPE and the three main categories of liquid-phase microextraction (LPME): single-drop microextraction (SDME), dispersive liquid–liquid microextraction (DLLME), and hollow fiber liquid-phase microextraction (HF-LPME). Characteristics of the methods are presented, considering experimental aspects, analytical features, advantages, and disadvantages. In addition, trends in the association between LPME techniques and XRF are presented.","PeriodicalId":8100,"journal":{"name":"Applied Spectroscopy Reviews","volume":"102 1","pages":"610 - 628"},"PeriodicalIF":6.1,"publicationDate":"2022-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90327546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-26DOI: 10.1080/05704928.2022.2104864
J. Ha
Abstract Localized surface plasmon resonance (LSPR) sensors using metallic nanoparticles are extensively used for refractive index (RI) measurements in chemical and biological studies, and their sensitivity is highly influenced by the material and structure of the nanoparticle. Despite the great advantages of LSPR sensors using frequency shifts, there are still major challenges in terms of detection sensitivity as well as the broadening and asymmetry of LSPR peaks. This article provides a general background of the fundamentals of LSPR and RI-based LSPR sensing. Thereafter, recent advances in the improvement of LSPR sensitivity are discussed in the viewpoints of two experimental and mathematical approaches. The experimental approaches, including the fabrication of plasmonic array nanostructures with high uniformity and site-selective immobilization, are briefly discussed. Later, we discuss recent studies using a simple mathematical approach with LSPR inflection point to improve the RI sensitivity in gold nanoparticles with different shapes, sizes, shells, etc.
{"title":"Strategies for sensitivity improvement of localized surface plasmon resonance sensors: experimental and mathematical approaches in plasmonic gold nanostructures","authors":"J. Ha","doi":"10.1080/05704928.2022.2104864","DOIUrl":"https://doi.org/10.1080/05704928.2022.2104864","url":null,"abstract":"Abstract Localized surface plasmon resonance (LSPR) sensors using metallic nanoparticles are extensively used for refractive index (RI) measurements in chemical and biological studies, and their sensitivity is highly influenced by the material and structure of the nanoparticle. Despite the great advantages of LSPR sensors using frequency shifts, there are still major challenges in terms of detection sensitivity as well as the broadening and asymmetry of LSPR peaks. This article provides a general background of the fundamentals of LSPR and RI-based LSPR sensing. Thereafter, recent advances in the improvement of LSPR sensitivity are discussed in the viewpoints of two experimental and mathematical approaches. The experimental approaches, including the fabrication of plasmonic array nanostructures with high uniformity and site-selective immobilization, are briefly discussed. Later, we discuss recent studies using a simple mathematical approach with LSPR inflection point to improve the RI sensitivity in gold nanoparticles with different shapes, sizes, shells, etc.","PeriodicalId":8100,"journal":{"name":"Applied Spectroscopy Reviews","volume":"47 4","pages":"346 - 365"},"PeriodicalIF":6.1,"publicationDate":"2022-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72584596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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