Download or read book Detection of Volatile Organic Compounds Using Surface Enhanced Raman Scattering written by and published by . This book was released on 2012 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present the detection of volatile organic compounds directly in their vapor phase by surface-enhanced Raman scattering (SERS) substrates based on lithographically-defined two-dimensional rectangular array of nanopillars. The type of nanopillars is known as the tapered pillars. For the tapered pillars, SERS enhancement arises from the nanofocusing effect due to the sharp tip on top. SERS experiments were carried out on these substrates using various concentrations of toluene vapor. The results show that SERS signal from a toluene vapor concentration of ppm level can be achieved, and the toluene vapor can be detected within minutes of exposing the SERS substrate to the vapor. A simple adsorption model is developed which gives results matching the experimental data. The results also show promising potential for the use of these substrates in environmental monitoring of gases and vapors.
Download or read book Surface Enhanced Raman Scattering written by Zhong-Qun Tian and published by John Wiley & Sons Incorporated. This book was released on 2010-06-14 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface-Enhanced Raman Spectroscopy: Principles, Experiments, and Applications is a comprehensive, up to date, and balanced treatment of the theoretical and practical aspects of Surface-Enhanced Raman Scattering (SERS), a useful branch of spectroscopy for several areas of science. This book describes the basic principles of SERS, including SERS mechanisms, performing SERS measurements, and interpreting data. Also emphasized are applications in electrochemistry; catalysis; surface processing and corrosion; Self-Assemble-Layer and L-B Films; polymer science; biology; medicine and drug analysis; sensors; fuel cells; forensics; and archaeology. It is an essential guide for student and professional analytical chemists.
Download or read book Plant Volatile Analysis written by Hans F. Linskens and published by Springer Science & Business Media. This book was released on 1997-04-16 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book covers a vast array of methods for the analysis of volatile compounds exuded by plants. Some of these volatiles are of great commercial importance, including the aromas of wines and teas, and volatiles in fruits. Other volatiles such as essential oils can be useful for chemotaxonomic purposes, and a chapter on an emerging method, that of chemometric analysis of such data, is included. Isoprene and ammonia rarely find a place in analytical methods presented for plant materials, but methods for these volatiles are described in this book. The volatiles given off by flowers are also included, and in situ headspace analysis of these volatiles is described, a method of potential use for the study of insect-plant interactions.
Download or read book Surface Enhanced Raman Spectroscopy written by Sebastian Schlücker and published by John Wiley & Sons. This book was released on 2011-09-19 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering everything from the basic theoretical and practical knowledge to new exciting developments in the field with a focus on analytical and life science applications, this monograph shows how to apply surface-enhanced Raman scattering (SERS) for solving real world problems. From the contents: * Theory and practice of SERS * Analytical applications * SERS combined with other analytical techniques * Biophysical applications * Life science applications including various microscopies Aimed at analytical, surface and medicinal chemists, spectroscopists, biophysicists and materials scientists. Includes a Foreword by the renowned Raman spectroscopist Professor Wolfgang Kiefer, the former Editor-in-Chief of the Journal of Raman Spectroscopy.
Download or read book Development of Novel Analytical Methods with the Aim of Forensic Analyte Detection Using Ultra thin Layer Chromatography Surface Enhanced Raman Spectroscopy and Magneto elastic Wire Sensing written by Nichole Ann Crane and published by . This book was released on 2016 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this dissertation is to develop analytical methods that aid in the detection of forensic analytes. Forensic analytes require methods with increased sensitivity and low limit of detection capabilities. Improvements in separation techniques, surface enhanced Raman spectroscopic techniques, and wire-less gas sensing can each assist in the detection of trace evidence. When surface enhanced Raman is coupled with thin-layer chromatography a mixture of compounds can be separated and transferred to a metal substrate to be detected using Raman spectroscopy. Surface enhanced Raman scattering enhances the Raman signal intensity by placing a metal substrate in close proximity to an analyte. The new method gives a chemically specific intensified signal along with a chromatographic separation. A traditional separation is performed on a TLC plate, allowed to dry, wetted with a solvent, placed in contact with a metal substrate, and detected using Raman. More efficient chromatographic platforms can be implemented with this method. New efficient chromatographic platforms are also beneficial to the detection of forensic analytes. Recently, photolithographically nanofabricated open system pillar arrays have proved to be more efficient separation platforms when compared to traditional TLC. These platforms are a form of ultra-thin layer chromatography. This dissertation describes the effects of manipulation on the inter-pillar gap distances with respect to band dispersion. The studies herein manipulate the pillar arrays in order to optimize the separation platform. The third method developed involved gas sensing of volatile organic compounds. An amorphous ferromagnetic micro-wire was coated with a polymer, where the polymer swelled in response to the gas introduced. When the gas caused the polymer to swell a differential stress response was applied on the micro-wire. The fabricated sensor was tested on simple organic gases but has capabilities to detect low concentrations of low vapor pressure forensic analytes. All three projects were significant advancements in analytical method development. The analytes used were either fluorescent dyes or volatile organic compounds to test feasibility of each method. More efficient chromatographic platforms were fabricated, surface enhanced Raman was coupled to TLC, and a micro-wire gas sensor was calibrated for the studies performed in this dissertation.
Download or read book Surface Enhanced Raman Scattering written by Katrin Kneipp and published by Springer Science & Business Media. This book was released on 2006-06-21 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: Almost 30 years after the first reports on surface-enhanced Raman signals, the phenomenon of surface-enhanced Raman scattering (SERS) is now well established. SERS gained particular interest after single-molecule Raman spectroscopy had been demonstrated. This book summarizes and discusses present theoretical approaches that explain the phenomenon of SERS and reports on new and exciting experiments and applications of the fascinating spectroscopic effect.
Download or read book Advanced Nanostructures for Environmental Health written by Lucian Baia and published by Elsevier. This book was released on 2019-11-20 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Nanostructures for Environmental Health shows how advanced nanostructures are used to meet the most important challenges of our age. The book presents examples of how advanced nanostructures can detect and remove pollutants and other contaminant harmful to people’s health and provides examples of diagnosis tools based on advanced nanostructures. Treatment possibilities with the use of nanostructures, such as phototherapeutic applications, radiation based treatment methods, and drug delivery systems are also explored. Takes an interdisciplinary approach to the use of advanced nanostructures for applications, including both environmental science and biomedical perspectives Includes a range of case studies to show how nanomaterials are being used to solve real-life challenges Covered applications include the detection of pharmaceuticals, pesticides, (heavy) metals and metalloids, gas molecules, bacteria, viruses, and for water and air decontamination by advanced oxidation processes
Download or read book Principles and Clinical Diagnostic Applications of Surface Enhanced Raman Spectroscopy written by Yuling Wang and published by Elsevier. This book was released on 2021-09-17 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: Principles and Clinical Diagnostic Applications of Surface-Enhanced Raman Spectroscopy summarizes the principles of surface-enhanced Raman scattering/spectroscopy (SERS) and plasmonic nanomaterials for SERS, with a focus on SERS applications in clinical diagnostics. This book covers the key concepts from the fundamentals, materials, experimental aspects, and applications of SERS in clinical diagnostics with discussions on label-free/direct SERS assay, design and synthesis of SERS nanotags, SERS nanotags for point-of-care diagnostics, microfluidic SERS assay, and in vitro and in vivo sensing and imaging. Written by experts from around the world, this comprehensive volume showcases the recent progress of SERS applications in clinical diagnostics and helps readers understand when and how to use SERS in a clinical setting. Introduces the basics of SERS and suitable nanomaterials for SERS application Gives an overview of the cutting-edge research on SERS applications for clinical diagnosis, including the latest advances in our understanding of underlying principles to enable material design and clinical applications Gradually builds from the fundamental concepts to the applications of SERS for clinical diagnostics
Download or read book Surface Enhanced Raman Scattering New Theoretical Approaches Materials and Strategies written by Ivano Alessandri and published by Frontiers Media SA. This book was released on 2020-03-25 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Issues in Applied Analytical and Imaging Sciences Research 2011 Edition written by and published by ScholarlyEditions. This book was released on 2012-01-09 with total page 1751 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in Applied, Analytical, and Imaging Sciences Research: 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Applied, Analytical, and Imaging Sciences Research. The editors have built Issues in Applied, Analytical, and Imaging Sciences Research: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Applied, Analytical, and Imaging Sciences Research in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Applied, Analytical, and Imaging Sciences Research: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Download or read book Handbook of Spectroscopy written by G¿nter Gauglitz and published by John Wiley & Sons. This book was released on 2014-05-05 with total page 2011 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second, thoroughly revised, updated and enlarged edition provides a straightforward introduction to spectroscopy, showing what it can do and how it does it, together with a clear, integrated and objective account of the wealth of information that may be derived from spectra. It also features new chapters on spectroscopy in nano-dimensions, nano-optics, and polymer analysis. Clearly structured into sixteen sections, it covers everything from spectroscopy in nanodimensions to medicinal applications, spanning a wide range of the electromagnetic spectrum and the physical processes involved, from nuclear phenomena to molecular rotation processes. In addition, data tables provide a comparison of different methods in a standardized form, allowing readers to save valuable time in the decision process by avoiding wrong turns, and also help in selecting the instrumentation and performing the experiments. These four volumes are a must-have companion for daily use in every lab.
Download or read book Plasmonic Sensors and their Applications written by Adil Denizli and published by John Wiley & Sons. This book was released on 2021-11-22 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plasmonic Sensors and their Applications A practically-focused reference and guide on the use of plasmonic sensing as a faster and cheaper alternative to conventional sensing platforms Plasmons, the collective oscillations of electrons occurring at the interface between any two materials, are sensitive to changes in dielectric properties near metal surfaces. Plasmonic sensors enable the real-time study of unique surface properties by monitoring the effect of the material interaction at the sensor surface. Plasmonic sensing techniques offer fast, label-free analysis, and hold advantages over labelling techniques such as ELISA (enzyme-linked immunosorbent assay). Plasmonic Sensors and their Applications examines the development and use of highly sensitive and selective plasmonic sensing platforms in chemistry, biotechnology, and medicine. Contributions by an international panel of experts provide timely and in-depth coverage of both real-world applications and academic research in the dynamic field. The authors describe advances in nanotechnology, polymer chemistry, and biomedicine, explore new and emerging applications of plasmonic sensing, discuss future trends and potential research directions, and more. This authoritative volume: Demonstrates why plasmonic sensing is a profitable method for easy and label-free analysis in real-time Covers a variety of applications of plasmonic sensors, such as disease diagnostics, vitamin detection, and detection of chemical and biological warfare agents Includes a brief introduction to the history and development of plasmonic sensors Provides concise theory and background for every application covered in the text Plasmonic Sensors and their Applications is an invaluable resource for analytical chemists, biochemists, biotechnologists, protein and surface chemists, and advanced students of biotechnology.
Download or read book Raman Spectroscopy written by Dheeraj Kumar Singh and published by Springer Nature. This book was released on with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Surface Enhanced Raman Spectroscopy with High Spatial Resolution written by T. R. Huser and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The identification of individual molecules and the determination of how these interact with their local environment are critical steps toward a better understanding of complex organic systems. Optical detection techniques have always played a key role in the nondestructive and noninvasive analysis of complex materials. Until recently, however, optical microscopy has lacked the sensitivity to study processes on the molecular scale. This has changed with the recent development of new schemes that limit the optical detection volume, and the advent of new, highly quantum-efficient photon detectors. These inventions have enabled researchers to optically probe biomolecular processes at the single molecule level by observing the fluorescence of specific marker molecules. The requirement to specifically label biomolecules and the fact, that fluorescence emission is prone to photodecomposition of the marker molecules, however, have limited this approach to a few, well-characterized case studies. Raman scattering, is one of few optical techniques that can identify atomic species and in addition determine their chemical bonds by observing their distinct vibrational fingerprints; but it is orders of magnitude weaker than fluorescence. In this project, we have developed new optical probes that allow for the non-destructive characterization and identification of organic and inorganic matter at the single molecule level by surface-enhanced Raman spectroscopy. Our approach combines confocal Raman microscopy with surface-enhanced Raman spectroscopy (SERS) generated by coating scanning probe microscope (SPM) tips with thin (30-40 nm) gold and silver films. The scanning SERS probe generates an image of the physical structure of a sample together with detailed chemical information about its composition. In a complementary approach, we have also used gold or silver nanoparticles to generate SER spectra from single molecules adsorbed to these particles. This project has led to the development of a new capability at LLNL, i.e. the field of optical single molecule detection.
Download or read book Raman Spectroscopy and Applications written by Khan Maaz and published by BoD – Books on Demand. This book was released on 2017-02-15 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: Raman spectroscopy has a number of applications in various fields including material science, physics, chemistry, biology, geology, and medicine. This book illustrates necessary insight and guidance in the field of Raman spectroscopy with detailed figures and explanations. This presents deep understanding of new techniques from basic introduction to the advance level for scientists and engineers. The chapters cover all major aspects of Raman spectroscopy and its application in material characterization with special emphasis on both the theoretical and experimental aspects. This book is aimed to provide solid foundation of Raman spectroscopy to the students, scientists, and engineers working in various fields as mentioned above.
Download or read book Near Field Optics and Surface Plasmon Polaritons written by Satoshi Kawata and published by Springer Science & Business Media. This book was released on 2001-06-20 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: This up-to-date overview describes in detail the physics of localized surface plasmon polaritons excited near fine metallic structures and the principles of near-field optics and microscopy related to this localized field. It also covers wider fields, from local spectroscopy to atom manipulation.
Download or read book Frontiers in Optics and Photonics written by Federico Capasso and published by Walter de Gruyter GmbH & Co KG. This book was released on 2021-06-08 with total page 1866 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a cutting-edge research overview on the latest developments in the field of Optics and Photonics. All chapters are authored by the pioneers in their field and will cover the developments in Quantum Photonics, Optical properties of 2D Materials, Optical Sensors, Organic Opto-electronics, Nanophotonics, Metamaterials, Plasmonics, Quantum Cascade lasers, LEDs, Biophotonics and biomedical photonics and spectroscopy.
