Showing papers in "Applied Spectroscopy Reviews in 2021"
TL;DR: Due to the unique characteristics of terahertz (THz) waves, such as low-energy, penetrating, and broadband, THz imaging has been regarded as cutting-edge technology in many fields.
Abstract: Due to the unique characteristics of terahertz (THz) waves, such as low-energy, penetrating, and broadband, THz imaging has been regarded as cutting-edge technology in many fields. As the demand fo...
45 citations
TL;DR: In this article, photoacoustic spectroscopy (PAS) is used for gas sensing, which usually uses a capacitive microphone as a signal detector, but the electric nature of the microphone limits its performance.
Abstract: Photoacoustic spectroscopy (PAS) is an ultrasensitive method for gas sensing, which usually using a capacitive microphone as a signal detector. However, the electric nature of the microphone limits...
40 citations
TL;DR: This review article focuses on introducing data science subjects to non-specialist spectroscopists, or those unfamiliar with the subject, and explains concepts that are covered in machine learning, such as supervised learning, unsupervised learning, deep learning, and most importantly, the difference between machine learning and artificial intelligence.
Abstract: The way to analyze data in spectroscopy has changed substantially. At the same time, data science has evolved to the point where spectroscopy can find space to be housed, adapted and be functional....
38 citations
TL;DR: A database reporting molecular fingerprints identified from bio-fluids which will aid the scientific community in improving quantity and quality of researcher’s outcome is prepared.
Abstract: In recent years, there has been an increase in the use of spectroscopy as a diagnostic tool. This review aims to summarize the studies that have reported the use of ATR-FTIR spectroscopy for the ac...
38 citations
TL;DR: In this paper, a brief update on the advances available for laser-induced breakdown spectroscopy (LIBS) is provided, focusing broad experimental and instrumental possibiliti...
Abstract: The purpose of this tutorial article is to provide a brief update on the advances available for laser-induced breakdown spectroscopy (LIBS), focusing broad experimental and instrumental possibiliti...
36 citations
TL;DR: Graphene has a unique regular hexagonal honeycomb carbon structure, which results in excellent photoelectric and chemical properties as discussed by the authors, especially the plasmon coupling effect produced by the composit...
Abstract: Graphene has a unique regular hexagonal honeycomb carbon structure, which results in excellent photoelectric and chemical properties. Especially the plasmon coupling effect produced by the composit...
34 citations
University of Central Lancashire1, Imperial College London2, Monash University, Clayton campus3, University of Strathclyde4, University of Manchester5, Imperial College Healthcare6, Federal University of Rio Grande do Norte7, Lancashire Teaching Hospitals NHS Foundation Trust8, University of Ioannina9, Keele University10, University of Wisconsin–Eau Claire11
TL;DR: In this article, the authors highlight applications of IR and Raman spectroscopy, with a focus on cancer and infectious diseases since 2015, and highlight the diverse sample types that can be analyzed, such as biofluids, cells and tissues.
Abstract: Analytical technologies that can improve disease diagnosis are highly sought after. Current screening/diagnostic tests for several diseases are limited by their moderate diagnostic performance, invasiveness, costly and laborious methodologies or the need for multiple tests before a definitive diagnosis. Spectroscopic techniques, including infrared (IR) and Raman, have attracted great interest in the medical field, with applications expanding from early disease detection to monitoring and real-time diagnosis.
This review highlights applications of IR and Raman spectroscopy, with a focus on cancer and infectious diseases since 2015, and underscores the diverse sample types that can be analyzed, such as biofluids, cells and tissues. Studies involving more than 25 participants per group (disease and control group; if no control group >25 in disease group) were considered eligible, to retain the clinical focus of the paper. Following literature searches, we identified 94 spectroscopic studies on different cancers and 30 studies on infectious diseases. The review suggests that such technologies have the potential to develop into an objective, inexpensive, point-of-care test or facilitate disease diagnosis and monitoring. Up-to-date considerations for the implementation of spectroscopic techniques into a clinical setting, health economics and successful applications of vibrational spectroscopic tests in the clinical arena are also discussed.
30 citations
TL;DR: The accumulation of engineered nanomaterials (ENMs) will increase as more applications are discovered for their unique properties and characteristics as mentioned in this paper, which will increase the number of ENMs.
Abstract: The accumulation of engineered nanomaterials (ENMs) will increase as more applications are discovered for their unique properties and characteristics. Additionally, the presence of nanomaterials in...
29 citations
TL;DR: Laser-induced breakdown spectroscopy (LIBS) as mentioned in this paper is a simple analytical method that provides qualitative and quantitative elemental information of samples without damaging them and does not damage them.
Abstract: Laser-induced breakdown spectroscopy (LIBS) is a rapid and simple analytical method that provides qualitative and quantitative elemental information of samples without damaging them and does not re
28 citations
TL;DR: In this article, the main strategies for geospatial luminescent sensors have been discussed, with the ability of providing a precisely quantitative and qualitative analysis of the luminescence data.
Abstract: Ratiometric luminescent sensors have been of considerable interest to the chemo/biosensor with the ability of providing a precisely quantitative and qualitative analysis. The main strategies for ge...
28 citations
TL;DR: The presence and mobility of heavy metals in ecosystems lead to the con... as discussed by the authors, which is a growing phenomenon mainly driven by anthropogenic activities, and the presence of heavy metal in ecosystems leads to the contamination of the environment by pollutants like heavy metals.
Abstract: Contamination of the environment by pollutants like heavy metals is a growing phenomenon mainly driven by anthropogenic activities. The presence and mobility of metals in ecosystems lead to the con...
TL;DR: Laser-induced breakdown spectroscopy (LIBS) is a promising element detection technique that has been rapidly developed for use in various applications, including the biomedical field as discussed by the authors.
Abstract: Laser-induced breakdown spectroscopy (LIBS) is a promising element detection technique that has been rapidly developed for use in various applications, including the biomedical field. The technique...
TL;DR: The applications of surfactants in various fields are gaining more attention, which makes full characterization of the surfactant characterization of growing interest as discussed by the authors, and it is fundamental to measure the critical micelle.
Abstract: The applications of surfactants in various fields are gaining more attention, which makes full characterization of surfactants of growing interest. It is fundamental to measure the critical micelle...
TL;DR: In this article, the use of Raman spectroscopy combined with saliva is presented as an exciting emerging spectroscopic-biofluid combination, and a review of current methods employed in such studies is presented.
Abstract: The use of Raman spectroscopy combined with saliva is an exciting emerging spectroscopy-biofluid combination. In this review, we summarize current methods employed in such studies, in particular th...
TL;DR: The analysis of VOCs can provide valuabl... as discussed by the authors, which contains small molecules and complex volatile organic compounds (VOCs) such as H2O, CO2, NO, NH3, ketones, aldehydes, alcohols, and hydrocarbons.
Abstract: Exhaled breath contains small molecules and complex volatile organic compounds (VOCs) such as H2O, CO2, NO, NH3, ketones, aldehydes, alcohols, and hydrocarbons. Analysis of VOCs can provide valuabl...
TL;DR: A brief review of photochemical vapor generation with 86 references is presented in this article, with special emphasis on the methods to improve vapor generation efficiency, then the efficiency of PVG.
Abstract: A brief review of photochemical vapor generation (PVG) with 86 references is first presented, with special emphasis on the methods to improve vapor generation efficiency, then the efficiency of PVG...
TL;DR: In this article, infrared spectroscopy has been used to characterize pharmaceutical products, even they are chemical substances or herbal, in order to monitor some modifications and to detect fraud, even if they are not chemical substances.
Abstract: Infrared spectroscopy has been used to more and more to characterize pharmaceutical products, even they are chemical substances or herbal, in order to monitor some modifications and to detect fraud...
TL;DR: In this article, a surface enhanced Raman spectroscopy (SERS) technique was developed to provide a high enhancement of Raman scattering from molecules adsorbed on nanostructured noble metal surfaces.
Abstract: Surface Enhanced Raman spectroscopy (SERS) technique was developed to provide a high enhancement of Raman scattering from molecules adsorbed on nanostructured noble metal surfaces. This technique h...
TL;DR: This review gathers and summarizes studies using FTIR in pre-clinical and clinical setting and aims to systematize information and propose some guidelines for FTIR spectroscopy studies of biological samples to help new users to prepare samples forFTIR analysis and understand the critical steps to correctly perform spectra pretreatment, preprocessing and statistical analysis.
Abstract: Fourier Transform Infrared (FTIR) Spectroscopy, in particular ATR-FTIR, is a widely used technique that allows, in a very short time, to screen biological samples and to identify its specific spect...
TL;DR: Bacterial biofilms play a role in a majority of chronic infections such infections are the result of bacterial colonization and matrix construction, which yield protective structures that are much more robust.
Abstract: Bacterial biofilms play a role in a majority of chronic infections Such infections are the result of bacterial colonization and matrix construction, which yield protective structures that are much
TL;DR: In this article, the content of inorganic mercury (Hg2+) and organic mercury (OrgHg) in the organisms or environment was analyzed using a speciation analysis.
Abstract: To gain deep insight into the content of inorganic mercury (Hg2+) and organic mercury (OrgHg) in the organisms or environment, speciation analysis was urgently required. The traditional methods for...
TL;DR: In this article, the principles, methods, and applications of electronic circular dichroism (ECD) and Raman optical activity (ROA) in practical cases are described. But they do not cover the application of ECD in the Internet.
Abstract: This review briefly describes the principles, methods, and applications of electronic circular dichroism (ECD) and Raman optical activity (ROA) in practical cases. Researchers have always been inte...
TL;DR: All skin cancer studies which have been conducted using FTIR spectroscopy and depict different methodologies that have been used to analyze FT IR spectroscopic data of skin cancers are identified.
Abstract: Skin cancers are one of the most frequently occurring diseases in humans that pose severe health issues. Fourier Transform Infrared (FTIR) spectroscopy in cancer research has gained considerable at...
TL;DR: In this article, Fourier transform infrared (FTIR) spectroscopy is used for material characterization, but due to the diffraction limit, conventional IR spectrograms cannot be applied to nanostructured materials.
Abstract: Fourier transform infrared (FTIR) spectroscopy is an important tool for material characterization. However, due to the diffraction limit, conventional infrared spectroscopy cannot be applied to nan...
TL;DR: In the past decades, tree diseases endanger forestry and fruit tree plantations seriously worldwide in the past few decades, leading to significant economic losses for the agricultural production sector as discussed by the authors, leading to the need for rapid and accurate diagnosis.
Abstract: Tree diseases endanger forestry and fruit tree plantations seriously worldwide in the past decades, leading to significant economic losses for the agricultural production sector. Rapid and accurate...
TL;DR: In this article, heavy metal pollution has become a severe problem in many parts of the world as their concentrations are increasing at an alarming rate due to increasing unplanned industrial activities, such as coal mining and nuclear power plants.
Abstract: Over the past few decades, heavy metal pollution has become a severe problem in many parts of the world as their concentrations are increasing at an alarming rate due to increasing unplanned indust...
TL;DR: In this paper, the authors used hyperspectral image (HSI) for resource exploration, ecological environment monitoring, land cover classification and target target selection, which contains rich spatial and spectral information.
Abstract: Hyperspectral image (HSI) contains rich spatial and spectral information, which has been widely used in resource exploration, ecological environment monitoring, land cover classification and target...
TL;DR: A key role in global ecosystem conservation and environmental maintenance, including plant active components, germplasm resources and vegetation dynamics, has been played by forests in the past few decades.
Abstract: Forests play a key role in global ecosystem conservation and environmental maintenance. Forestry, which includes plant active components, germplasm resources and vegetation dynamics, has received s...
TL;DR: In this paper, the microalgae cell concentration is one of the most commonly used and important parameter in microalgale culture and ecological monitoring. But the traditional detection process is cumbersome, laborious, and a...
Abstract: Microalgae cell concentration is one of the most commonly used and important parameter in microalgae culture and ecological monitoring. The traditional detection process is cumbersome, laborious, a...
TL;DR: In this paper, the authors describe the challenges of dealing with hazardous and recalcitrant pollutants such as heavy metals (HMs) in the Pacific islands of the world, such as Papua New Guinea and Tonga.
Abstract: Effectively dealing with hazardous and recalcitrant pollutants such as heavy metals (HMs) has become a global challenge with limited options available for reprieve. This is true for Pacific Island ...