Using Correlated Super-resolution Optical and Structural Studies to Investigate Surface-enhanced Raman Scattering on Silver & Gold Nanoparticles

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ISBN 13 :
Total Pages : 528 pages
Book Rating : 4.:/5 (983 download)

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Book Synopsis Using Correlated Super-resolution Optical and Structural Studies to Investigate Surface-enhanced Raman Scattering on Silver & Gold Nanoparticles by : Maggie Leona Weber

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.

Frontiers of Surface-Enhanced Raman Scattering

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Publisher : John Wiley & Sons
ISBN 13 : 111870357X
Total Pages : 466 pages
Book Rating : 4.1/5 (187 download)

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Book Synopsis Frontiers of Surface-Enhanced Raman Scattering by : Yukihiro Ozaki

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.

Optical Properties of Nanoparticle Systems

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Publisher : John Wiley & Sons
ISBN 13 : 3527633154
Total Pages : 507 pages
Book Rating : 4.5/5 (276 download)

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Book Synopsis Optical Properties of Nanoparticle Systems by : Michael Quinten

Download or read book Optical Properties of Nanoparticle Systems written by Michael Quinten and published by John Wiley & Sons. This book was released on 2010-11-29 with total page 507 pages. Available in PDF, EPUB and Kindle. Book excerpt: Filling the gap for a description of the optical properties of small particles with sizes less than 1000 nm and to provide a comprehensive overview on the spectral behavior of nanoparticulate matter, this is the most up-to-date reference on the optical physics of nanoparticle systems. The author, an expert in the field with both academic and industrial experience, concentrates on the linear optical properties, elastic light scattering and absorption of single nanoparticles and on reflectance and transmittance of nanoparticle matter.

Surface Enhanced Raman Spectroscopy for Biophysical Applications

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Publisher : Springer
ISBN 13 : 3030035565
Total Pages : 167 pages
Book Rating : 4.0/5 (3 download)

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Book Synopsis Surface Enhanced Raman Spectroscopy for Biophysical Applications by : Claudia Fasolato

Download or read book Surface Enhanced Raman Spectroscopy for Biophysical Applications written by Claudia Fasolato and published by Springer. This book was released on 2018-12-05 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book explores the phenomenon of surface-enhanced Raman scattering (SERS), the huge amplification of Raman signal from molecules in the proximity of a metallic nanostructured surface, allowing readers to gain an in-depth understanding of the mechanisms affecting the spectroscopic response of SERS-active systems for effective applications. SERS spectroscopy is an ultrasensitive analytical technique with great potential for applications in the field of biophysics and nanomedicine. As examples, the author presents the design of nanocolloid-based SERS-active substrates for molecular sensing and of a folate-based SERS-active nanosensor capable of selectively interacting with cancer cells, enabling cancer diagnostics and therapy at the single-cell level. The author also suggests novel paths for the systematization of the SERS nanosystem design and experimental protocols to maximize sensitivity and reproducibility, which is essential when real-world biomedical applications are the goal of the study. With a combined approach, both fundamental and applied, and a detailed analysis of the state of the art, this book provides a valuable overview both for students new to SERS spectroscopy and for experts in the field.

Surface-Enhanced Raman Scattering

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Publisher : Springer Science & Business Media
ISBN 13 : 3540335676
Total Pages : 473 pages
Book Rating : 4.5/5 (43 download)

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Book Synopsis Surface-Enhanced Raman Scattering by : Katrin Kneipp

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.

Surface-Enhanced Vibrational Spectroscopy

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Publisher : John Wiley & Sons
ISBN 13 : 9780470035658
Total Pages : 260 pages
Book Rating : 4.0/5 (356 download)

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Book Synopsis Surface-Enhanced Vibrational Spectroscopy by : Ricardo Aroca

Download or read book Surface-Enhanced Vibrational Spectroscopy written by Ricardo Aroca and published by John Wiley & Sons. This book was released on 2006-05-01 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface Enhanced Vibrational Spectroscopy (SEVS) has reached maturity as an analytical technique, but until now there has been no single work that describes the theory and experiments of SEVS. This book combines the two important techniques of surface-enhanced Raman scattering (SERS) and surface-enhanced infrared (SEIR) into one text that serves as the definitive resource on SEVS. Discusses both the theory and the applications of SEVS and provides an up-to-date study of the state of the art Offers interpretations of SEVS spectra for practicing analysts Discusses interpretation of SEVS spectra, which can often be very different to the non-enhanced spectrum - aids the practicing analyst

Optimisation of Surface Enhanced Raman Scattering from Gold and Silver Nanoparticle Solutions

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (141 download)

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Book Synopsis Optimisation of Surface Enhanced Raman Scattering from Gold and Silver Nanoparticle Solutions by : Johan Lundahl

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.

Surface Enhanced Raman Scattering: New Theoretical Approaches, Materials and Strategies

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Publisher : Frontiers Media SA
ISBN 13 : 2889635538
Total Pages : 175 pages
Book Rating : 4.8/5 (896 download)

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Book Synopsis Surface Enhanced Raman Scattering: New Theoretical Approaches, Materials and Strategies by : Ivano Alessandri

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:

Metal-Enhanced Fluorescence

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Publisher : John Wiley & Sons
ISBN 13 : 0470642785
Total Pages : 655 pages
Book Rating : 4.4/5 (76 download)

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Book Synopsis Metal-Enhanced Fluorescence by : Chris D. Geddes

Download or read book Metal-Enhanced Fluorescence written by Chris D. Geddes and published by John Wiley & Sons. This book was released on 2010-06-22 with total page 655 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discover how metal-enhanced fluorescence is changing traditional concepts of fluorescence This book collects and analyzes all the current trends, opinions, and emerging hot topics in the field of metal-enhanced fluorescence (MEF). Readers learn how this emerging technology enhances the utility of current fluorescence-based approaches. For example, MEF can be used to better detect and track specific molecules that may be present in very low quantities in either clinical samples or biological systems. Author Chris Geddes, a noted pioneer in the field, not only explains the fundamentals of metal-enhanced fluorescence, but also the significance of all the most recent findings and models in the field. Metal-enhanced fluorescence refers to the use of metal colloids and nanoscale metallic particles in fluorescence systems. It offers researchers the opportunity to modify the basic properties of fluorophores in both near- and far-field fluorescence formats. Benefits of metal-enhanced fluorescence compared to traditional fluorescence include: Increased efficiency of fluorescence emission Increased detection sensitivity Protect against fluorophore photobleaching Applicability to almost any molecule, including both intrinsic and extrinsic chromophores Following a discussion of the principles and fundamentals, the author examines the process and applications of metal-enhanced fluorescence. Throughout the book, references lead to the primary literature, facilitating in-depth investigations into particular topics. Guiding readers from the basics to state-of-the-technology applications, this book is recommended for all chemists, physicists, and biomedical engineers working in the field of fluorescence.

Surface Enhanced Raman Scattering Nanoparticles as Optical Labels for Imaging Cell Surface Proteins

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (133 download)

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Book Synopsis Surface Enhanced Raman Scattering Nanoparticles as Optical Labels for Imaging Cell Surface Proteins by : Christina MacLaughlin

Download or read book Surface Enhanced Raman Scattering Nanoparticles as Optical Labels for Imaging Cell Surface Proteins written by Christina MacLaughlin and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Assaying the expression of cell surface proteins has widespread application for characterizing cell type, developmental stage, and monitoring disease transformation. Immunophenotyping is conducted by treating cells with labelled targeting moieties that have high affinity for relevant surface protein(s). The sensitivity and specificity of immunophenotyping is defined by the choice of contrast agent and therefore, the number of resolvable signals that can be used to simultaneously label cells. Narrow band width surface-enhanced Raman scattering (SERS) nanoparticles are proposed as optical labels for multiplexed immunophenotying. Two types of surface coatings were investigated to passivate the gold nanoparticles, incorporate SERS functionality, and to facilitate attachment of targeting antibodies. Thiolated poly(ethylene glycol) forms dative bonds with the gold surface and is compatible with multiple physisorbed Raman-active reporter molecules. Ternary lipid bilayers are used to encapsulate the gold nanoparticles particles, and incorporate three different classes of Raman reporters. TEM, UV-Visible absorbance spectroscopy, DLS, and electrophoretic light scattering were used characterize the particle coating. Colourimetric protein assay, and secondary antibody labelling were used to quantify the antibody conjugation. Three different.

Raman Spectroscopy for Nanomaterials Characterization

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Publisher : Springer Science & Business Media
ISBN 13 : 3642206204
Total Pages : 659 pages
Book Rating : 4.6/5 (422 download)

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Book Synopsis Raman Spectroscopy for Nanomaterials Characterization by : Challa S.S.R. Kumar

Download or read book Raman Spectroscopy for Nanomaterials Characterization written by Challa S.S.R. Kumar and published by Springer Science & Business Media. This book was released on 2012-03-30 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: First volume of a 40-volume series on nanoscience and nanotechnology, edited by the renowned scientist Challa S.S.R. Kumar. This handbook gives a comprehensive overview about Raman spectroscopy for the characterization of nanomaterials. Modern applications and state-of-the-art techniques are covered and make this volume essential reading for research scientists in academia and industry.

Gold and Silver Nanoparticles

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Publisher : Elsevier
ISBN 13 : 0323994555
Total Pages : 454 pages
Book Rating : 4.3/5 (239 download)

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Book Synopsis Gold and Silver Nanoparticles by : Suban K. Sahoo

Download or read book Gold and Silver Nanoparticles written by Suban K. Sahoo and published by Elsevier. This book was released on 2023-01-20 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gold and Silver Nanoparticles: Synthesis and Applications provides detailed information on the preparation and utilization of Au- and Ag-based nanoparticles in a range of novel areas. Gold and silver nanoparticles offer a range of interesting properties, including unique size-dependent optoelectronic properties, chemical stability and biocompatibility, ease of synthesis and surface modification, excellent resistance to corrosion, and catalytic properties, hence paving the way to a wide range of cutting-edge applications with continual advances and innovations. Sections introduce gold and silver nanoparticles, fundamental theory, synthesis, and characterization techniques before focusing on requirements and preparation methods. Specific applications areas, such as surface-enhanced Raman spectroscopy (SERS), sensing and biosensing, imaging, drug and gene delivery, disease diagnosis, catalysis, and optoelectronic device fabrication are covered. Finally, synthesis and applications of platinum- and palladium-based nanoparticles are discussed. This is a valuable resource for researchers and advanced students across nanoscience and nanotechnology, chemistry, and materials science, as well as scientists, engineers, and R&D professionals with an interest in noble metal nanomaterials for a range of industrial applications. - Explains theory, synthesis, characterization, and properties of Au- and Ag- based nanoparticles - Explores a range of novel applications across biomedicine, optoelectronics, and other areas - Analyzes the latest developments in the field and considers noble metal nanoparticles beyond gold and silver

Surface Enhanced Raman Scattering

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (117 download)

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Book Synopsis Surface Enhanced Raman Scattering by : Idrissa Sow

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:

Chemical Resonance Effects in Surface-enhanced Raman Scattering of Nucleic Acid-Silver Composites

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ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.:/5 (951 download)

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Book Synopsis Chemical Resonance Effects in Surface-enhanced Raman Scattering of Nucleic Acid-Silver Composites by : Lindsay Michelle Freeman

Download or read book Chemical Resonance Effects in Surface-enhanced Raman Scattering of Nucleic Acid-Silver Composites written by Lindsay Michelle Freeman and published by . This book was released on 2016 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although surface-enhanced Raman spectroscopy (SERS) has been a valuable tool for chemical detection, the understanding of the contributions of the chemical enhancement effect in nucleic acid-silver composites remains limited. Nucleic acid-silver composites have unique optical properties such as fluorescence and enhanced Raman generation, and thus need to be further analyzed and characterized. In this dissertation, the static polarizability chemical effect is used to determine the preferential binding sites of nucleic acids to silver nanoparticles. The binding configuration dictates the optical properties, so it is imperative to determine which atoms are binding to the silver structures. Time-dependent density functional theory simulations are used to calculate the Raman frequencies of several systems and are then quantitatively compared to experimental measurements. The approximate composition of the binding sites for each nucleic acid to silver films is determined using the simulated Raman correlation spectroscopy process. In the second part of the dissertation, the charge-transfer effect in nucleic acid-silver composites is harnessed in order to selectively enhance or reduce the SERS signals via wavelength selection. Depending on the molecular properties of the nucleic acids, the optimal excitation wavelength shifts from visible to near-infrared. The properties can be taken advantage of to better control the systems under study. The charge-transfer effect is further understood by utilizing a thin film of aluminum oxide to prevent electron transfer from occurring, and thus enabling the calculation of the order of magnitude of the charge-transfer effect. The characterization of nucleic acid-silver composites is imperative to fully understanding the unique and exciting properties that these systems provide. While SERS has been limited in terms of DNA detection or sequencing, the restrictions have been caused by insufficient information. This dissertation offers additional information on the systems and explains the discrepancies seen in previous measurements of nucleic acid-silver composites.

Principles of Surface-Enhanced Raman Spectroscopy

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Publisher : Elsevier
ISBN 13 : 0080931553
Total Pages : 688 pages
Book Rating : 4.0/5 (89 download)

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Book Synopsis Principles of Surface-Enhanced Raman Spectroscopy by : Eric Le Ru

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

Raman Spectroscopy for Nanomaterials Characterization

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Publisher : Springer Science & Business Media
ISBN 13 : 3642206190
Total Pages : 659 pages
Book Rating : 4.6/5 (422 download)

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Book Synopsis Raman Spectroscopy for Nanomaterials Characterization by : Challa S. S. R. Kumar

Download or read book Raman Spectroscopy for Nanomaterials Characterization written by Challa S. S. R. Kumar and published by Springer Science & Business Media. This book was released on 2012-03-02 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook gives a comprehensive overview about Raman spectroscopy for the characterization of nanomaterials. It is the first volume of a 40-volume series on nanoscience and nanotechnology, edited by the renowned scientist Challa S.S.R. Kumar.

Synthesis, Optical Properties, and Sensing with Gold Nanoparticles, Aggregates, and Hollow Gold Nanospheres

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Publisher :
ISBN 13 :
Total Pages : 330 pages
Book Rating : 4.:/5 (73 download)

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Book Synopsis Synthesis, Optical Properties, and Sensing with Gold Nanoparticles, Aggregates, and Hollow Gold Nanospheres by : Adam M. Schwartzberg

Download or read book Synthesis, Optical Properties, and Sensing with Gold Nanoparticles, Aggregates, and Hollow Gold Nanospheres written by Adam M. Schwartzberg and published by . This book was released on 2006 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: