Principles Of Surface Enhanced Raman Spectroscopy And Related Plasmonic Effects Pdf
File Name: principles of surface enhanced raman spectroscopy and related plasmonic effects .zip
Plasmonic nanostructures are widely utilized in surface-enhanced Raman spectroscopy SERS from ultraviolet to near-infrared applications. Periodic nanoplasmonic systems such as plasmonic gratings are of great interest as SERS-active substrates due to their strong polarization dependence and ease of fabrication. In this work, we modelled a silver grating that manifests a subradiant plasmonic resonance as a dip in its reflectivity with significant near-field enhancement only for transverse-magnetic TM polarization of light.
- Tip enhanced Raman scattering: plasmonic enhancements for nanoscale chemical analysis
- Surface-Enhanced Raman Scattering: Introduction and Applications
- Principles of Surface-Enhanced Raman Spectroscopy
Scattering of light by molecules can be elastic, Rayleigh scattering, or inelastic, Raman scattering. Hence, Rayleigh scattered light does not contain much information on the structure of molecular states.
Tip enhanced Raman scattering TERS is an emerging technique that uses a metalized scanning probe microscope tip to spatially localize electric fields that enhances Raman scattering enabling chemical imaging on nanometer dimensions. Arising from the same principles as surface enhanced Raman scattering SERS , TERS offers unique advantages associated with controling the size, shape, and location of the enhancing nanostructure. The relationship between plasmon resonances and Raman enhancements is emphasized as the key to obtaining optimal TERS results.
Tip enhanced Raman scattering: plasmonic enhancements for nanoscale chemical analysis
Molecular detection techniques are conventionally based on optical, electrochemical, electronic, or gravimetric methodologies. Unfortunately, the applicability of SERS is rather limited, which is mainly due to the lack of highly sensitive SERS platforms with good stability and reproducibility. In line with this, metal nanoparticles e. Although the utilization of metallic nanoparticles in SERS is simple and cost-effective, the poor controllability of the structures and limited formation of hot spots in the detection zone leads to discrepancy in the resulting SERS signals. For these reasons, in the past few years, researchers have focused on fabricating 3-dimensional 3D SERS platforms, which increase the adsorption of analyte molecules and facilitate hot spot formation in all three dimensions. Therefore, the discovery of non-metal alternative approaches is of great interest not only to widen SERS applications but to further elucidate fundamental questions.
These metrics are regularly updated to reflect usage leading up to the last few days. Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts. The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric. Find more information on the Altmetric Attention Score and how the score is calculated. The discovery of the enhancement of Raman scattering by molecules adsorbed on nanostructured metal surfaces is a landmark in the history of spectroscopic and analytical techniques.
Surface-Enhanced Raman Scattering: Introduction and Applications
Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. Ru and P. Etchegoin Published Materials Science. Surface-Enhanced Raman Scattering SERS was discovered in the s 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.
Principles of Surface-Enhanced Raman Spectroscopy
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SERS was discovered in the s 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.
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