Download or read book Surface enhanced Raman Scattering from Silver Ellipsoidal Particles written by David Lewis Bailey and published by . This book was released on 1988 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surface Enhanced Raman Scattering written by Richard Chang and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the course of the development of surface science, advances have been identified with the introduction of new diagnostic probes for analytical characterization of the adsorbates and microscopic structure of surfaces and interfaces. Among the most recently de veloped techniques, and one around which a storm of controversy has developed, is what has now been earmarked as surface enhanced Raman scattering (SERS). Within this phenomenon, molecules adsorbed onto metal surfaces under certain conditions exhibit an anomalously large interaction cross section for the Raman effect. This makes it possible to observe the detailed vibrational signature of the adsorbate in the ambient phase with an energy resolution much higher than that which is presently available in electron energy loss spectroscopy and when the surface is in contact with a much larger amount of material than that which can be tolerated in infrared absorption experiments. The ability to perform vibrational spectroscopy under these conditions would lead to a new understanding about the chemical identity, geome try, and bonding of adsorbed material at a level previously unacces sible. It is for these reasons that the last few years have brought an explosion of activity surrounding the exploitation of SERS. The search for the origines) of the anomalous enhancement has given rise to a research sub-activity of its own. Efforts to explain the en hancement have led to an increased understanding of the whole range of phenomena associated with the interaction of photons with adsor bates and metal surfaces.

Download or read book Frontiers of Surface Enhanced Raman Scattering written by Yukihiro Ozaki and published by John Wiley & Sons. This book was released on 2014-02-19 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive presentation of Surface-Enhanced Raman Scattering (SERS) theory, substrate fabrication, applications of SERS to biosystems, chemical analysis, sensing and fundamental innovation through experimentation. Written by internationally recognized editors and contributors. Relevant to all those within the scientific community dealing with Raman Spectroscopy, i.e. physicists, chemists, biologists, material scientists, physicians and biomedical scientists. SERS applications are widely expanding and the technology is now used in the field of nanotechnologies, applications to biosystems, nonosensors, nanoimaging and nanoscience.

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 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 Principles of Surface Enhanced Raman Spectroscopy written by Eric Le Ru and published by Elsevier. This book was released on 2008-11-17 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: SERS was discovered in the 1970s and has since grown enormously in breadth, depth, and understanding. One of the major characteristics of SERS is its interdisciplinary nature: it lies at the boundary between physics, chemistry, colloid science, plasmonics, nanotechnology, and biology. By their very nature, it is impossible to find a textbook that will summarize the principles needed for SERS of these rather dissimilar and disconnected topics. Although a basic understanding of these topics is necessary for research projects in SERS with all its many aspects and applications, they are seldom touched upon as a coherent unit during most undergraduate studies in physics or chemistry. This book intends to fill this existing gap in the literature. It provides an overview of the underlying principles of SERS, from the fundamental understanding of the effect to its potential applications. It is aimed primarily at newcomers to the field, graduate students, researchers or scientists, attracted by the many applications of SERS and plasmonics or its basic science. The emphasis is on concepts and background material for SERS, such as Raman spectroscopy, the physics of plasmons, or colloid science, all of them introduced within the context of SERS, and from where the more specialized literature can be followed. Represents one of very few books fully dedicated to the topic of surface-enhanced Raman spectroscopy (SERS) Gives a comprehensive summary of the underlying physical concepts around SERS Provides a detailed analysis of plasmons and plasmonics

Download or read book Optimisation of Surface Enhanced Raman Scattering from Gold and Silver Nanoparticle Solutions written by Johan Lundahl and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The efficiency of Surface enhanced resonance Raman spectroscopy (SERS or SERRS) as a technique is entirely dependent on controlling the parameters responsible for the enhancement effects. In this thesis, some of the critical parameters have been investigated. It is concluded that it is possible to predict and to some degree manipulate the maximum enhancement of the Raman scattering in an experimental setup. By applying the findings presented in this thesis it is possible to optimise an experimental setup according to a desired purpose where silver or gold nanoparticle solutions are used as the source of surface enhancement. Many of the findings herein are also expected to be applicable to other SER(R)S-systems, and also to be of interest in related techniques, such as metal enhanced fluorescence and surface plasmon resonance. Methods for the controlled synthesis of silver and gold nanoparticles, are presented and techniques for the characterisation of their physical properties are evaluated. Further, a technique enabling the separation of the relative contribution of absorption and scattering to the extinction profile is presented. Further, the effect of the nanoparticles physical properties on their suitability as SERS substrates is investigated. In particular, the effect of nanoparticle size and nanoparticle solution state of aggregation is investigated in order to optimise the SERS intensity at the detector. The results show that the SERS intensity is critically dependent on these properties, and that it is possible to predict the optimal combination of nanoparticle size, wavelength of the excitation source and aggregation state of the nanoparticle solution. Finally, the effect of a molecular resonance on the SERRS intensity is demonstrated and confirmed as a significant effect.

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 Selected Papers on Surface enhanced Raman Scattering written by Milton Kerker and published by . This book was released on 1990 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Using Correlated Super resolution Optical and Structural Studies to Investigate Surface enhanced Raman Scattering on Silver Gold Nanoparticles written by Maggie Leona Weber and published by . This book was released on 2015 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface-enhanced Raman scattering (SERS) from organic molecules is used to study how geometry affects plasmonic enhancement in noble metal nanoparticles using super-resolution analysis techniques coupled with scanning electron microscope (SEM) imaging. We demonstrate that super-resolution analysis can track emission from Raman-active molecules on nanoaggregate surfaces with resolution typically better than 5 nm, a significant improvement over the diffraction limit. This optical analysis technique is used to identify active junction regions, known as hot spots, in correlated SEM structural images of aggregated particles based on shape, size, and angular position of SERS emission. This correlated analysis is further extended to study the mechanism of silver nanoparticle luminescence and its positional relationship to SERS emission. These studies support the hypothesis that silver luminescence is enhanced via a different mechanism than SERS. Discrete dipole approximation calculations agree with experimental results, indicating that SERS emission is a product of local plasmonic enhancement in specific junction regions between nanoparticles whereas silver luminescence is dependent upon nanoaggregate geometry and the collective plasmon modes within a structure. These theoretical calculations of luminescence centroid location can assist with SERS-active junction region assignment in higher order aggregates (e.g. trimers, tetramers, etc.) Finally, correlated optical and structural studies are used to develop understanding of site-specific electrochemical potentials on silver and gold nanoparticle aggregates using a redox active Raman reporter molecule. We demonstrate that there is a weak correlation between emission centroid location and bulk sample potential. Silver colloid studies demonstrate variability in modulation behavior and are highly unpredictable, whereas gold colloids with the redox molecule covalently tethered to their surface via a gold-thiol bond show more reproducible modulation. Furthermore, these tethered studies demonstrate geometrical agreement between site-specific emission at negative potentials and junction regions in nanoaggregate SEM images indicating that plasmonic enhancement may affect local nanoparticle surface potentials.

Download or read book Surface Enhanced Raman Scattering written by Idrissa Sow and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ultrahigh vacuum Studies of Surface Enhanced Raman Scattering from Absorbates on Modulated Silver Surfaces written by Pia Naoko Sanda and published by . This book was released on 1982 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surface Enhanced Raman Scattering and Surface Plasmon Resonance in Thin Silver gold Films written by Yafit Fleger and published by . This book was released on 2008* with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fabrication of Hexagonally Patterned Flower like Silver Particle Arrays as Surface enhanced Raman Scattering Substrates written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Solution based Characterization of Surface enhanced Raman Response of Single Scattering Centers written by and published by . This book was released on 2008 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: We demonstrate the rapid optical characterization of large numbers of individual metal nanoparticles freely diffusing in colloidal solution by confocal laser spectroscopy. We find that hollow gold nanospheres and solid silver nanoparticles linked with a bifunctional ligand, both designed nanostructures, exhibit significantly higher monodispersity in their Rayleigh and Raman scattering response than randomly aggregated gold and silver nanoparticles. We show that measurements of rotational diffusion timescales allow sizing of particles significantly more reliably than can be obtained using translational diffusion timescales.

Download or read book Surface Enhanced Raman Scattering and Surface Plasmon Resonance in Thin Silver gold Films written by Yafit Fleger and published by . This book was released on 2008* with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surface enhanced Raman Scattering of Nanostructured Assemblies written by Kyle W. Kimble and published by . This book was released on 2001 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: