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Surface-enhanced Raman scattering (SERS) is a research technique that was discovered in the mid-1970s. SERS is a powerful and fast tool for analysis, which has a high detection sensitivity for a great number of chemical and biological molecules. However, it is in this last decade that a very significant explosion of the fabrication of highly sensitive SERS substrates has occurred using novel designs of plasmonic nanostructures and novel fabrication techniques of the latter, as well as new plasmonic materials and hybrid nanomaterials. Thus, this Special Issue is dedicated to reporting on the latest advances in novel plasmonic nanomaterials that are applied to the SERS domain. These developments are illustrated through several articles and reviews written by researchers in this field from around the world.

Research & information: general --- pulsed laser ablation --- acetonitrile (CH3CN) --- Cu/gCN hybrids --- localized surface plasmon resonance (LSPR) --- surface enhanced Raman scattering (SERS) --- surface enhanced resonance Raman scattering (SERRS) --- silver aggregates --- laser-induced synthesis --- surface-enhanced Raman scattering --- hot spots --- SERS --- sensors --- plasmonics --- gold --- silicon --- surface-enhanced Raman scattering (SERS) --- surface plasmon polariton (SPP) --- surface plasmon resonance (SPR) --- nanograting --- nanofabrication --- electron beam lithography --- zinc oxide --- metal oxides --- self-assembly --- bimetallic nanoparticles --- localized surface plasmon --- surface enhanced Raman scattering --- grating effect --- gold nanodisks --- Rayleigh anomaly --- pulsed laser ablation --- acetonitrile (CH3CN) --- Cu/gCN hybrids --- localized surface plasmon resonance (LSPR) --- surface enhanced Raman scattering (SERS) --- surface enhanced resonance Raman scattering (SERRS) --- silver aggregates --- laser-induced synthesis --- surface-enhanced Raman scattering --- hot spots --- SERS --- sensors --- plasmonics --- gold --- silicon --- surface-enhanced Raman scattering (SERS) --- surface plasmon polariton (SPP) --- surface plasmon resonance (SPR) --- nanograting --- nanofabrication --- electron beam lithography --- zinc oxide --- metal oxides --- self-assembly --- bimetallic nanoparticles --- localized surface plasmon --- surface enhanced Raman scattering --- grating effect --- gold nanodisks --- Rayleigh anomaly

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Fostered by the remarkable progress in the fabrication of nanoparticles and nanostructures, in the last years Surface-Enhanced Raman scattering (SERS) has reached an impressive diffusion in many fields of chemistry and analytical sciences. Several exciting results have been recently reported in SERS-based ultrasensitive detection and molecular imaging. However, more than forty years after its discovery, conventional SERS is still struggling to make its way as a reliable analytical method. The remarkable enhancement of the local electromagnetic field achieved by plasmonic nanostructures is indeed a double-edged sword, as in pushing the sensitivity to the ultimate level, it strongly limits accuracy and reproducibility of the Raman data. In this context, non-plasmonic or hybrid plasmon/dielectric systems are emerging as a promising alternative/complement to conventional SERS. Core/shell systems like T-rex or SHiNERS are only a few examples of these novel SERS-active platforms. In parallel, new theoretical models, based on quantum optomechanical approaches have been recently proposed and developed for describing and predicting plasmonic, non-plasmonic and hybrid (e.g. photo-induced enhanced Raman scattering, PIERS) SERS, also including opto-thermal effects. Moreover, the next-generation of SERS-active materials is facing new challenges in terms of detection strategies, integration with complementary methods and stimuli responsiveness. This Research Topic collects the most recent advances in SERS and related effects, from the viewpoint of theory/models, materials and detection strategies, providing an up-to-date forum for setting the basis for future research in this vibrant field.

Science: general issues --- SERS (surface enhanced Raman scattering) --- Raman sensing --- SERS theory --- non-plasmonic SERS forensics --- food analysis --- biodiagnostics --- cultural heritage --- SERS (surface enhanced Raman scattering) --- Raman sensing --- SERS theory --- non-plasmonic SERS forensics --- food analysis --- biodiagnostics --- cultural heritage

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This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact

topological constraint theory (TCT) --- topological phases --- fragility index --- modulated-DSC --- molecular dynamics --- Raman scattering --- chalcogenides --- statistical mechanics

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Stimulated Raman Scattering Microscopy: Techniques and Applications describes innovations in instrumentation, data science, chemical probe development, and various applications enabled by a state-of-the-art stimulated Raman scattering (SRS) microscope. Beginning by introducing the history of SRS, this book is composed of seven parts in depth including instrumentation strategies that have pushed the physical limits of SRS microscopy, vibrational probes (which increased the SRS imaging functionality), data science methods, and recent efforts in miniaturization. This rapidly growing field needs a comprehensive resource that brings together the current knowledge on the topic, and this book does just that. Researchers who need to know the requirements for all aspects of the instrumentation as well as the requirements of different imaging applications (such as different types of biological tissue) will benefit enormously from the examples of successful demonstrations of SRS imaging in the book.

Raman effect. --- Combination scattering spectra --- Hyper Raman effect --- Raman scattering --- Raman spectra --- Light --- Scattering --- Raman spectroscopy. --- Spectrum Analysis, Raman --- methods --- instrumentation

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Fostered by the remarkable progress in the fabrication of nanoparticles and nanostructures, in the last years Surface-Enhanced Raman scattering (SERS) has reached an impressive diffusion in many fields of chemistry and analytical sciences. Several exciting results have been recently reported in SERS-based ultrasensitive detection and molecular imaging. However, more than forty years after its discovery, conventional SERS is still struggling to make its way as a reliable analytical method. The remarkable enhancement of the local electromagnetic field achieved by plasmonic nanostructures is indeed a double-edged sword, as in pushing the sensitivity to the ultimate level, it strongly limits accuracy and reproducibility of the Raman data. In this context, non-plasmonic or hybrid plasmon/dielectric systems are emerging as a promising alternative/complement to conventional SERS. Core/shell systems like T-rex or SHiNERS are only a few examples of these novel SERS-active platforms. In parallel, new theoretical models, based on quantum optomechanical approaches have been recently proposed and developed for describing and predicting plasmonic, non-plasmonic and hybrid (e.g. photo-induced enhanced Raman scattering, PIERS) SERS, also including opto-thermal effects. Moreover, the next-generation of SERS-active materials is facing new challenges in terms of detection strategies, integration with complementary methods and stimuli responsiveness. This Research Topic collects the most recent advances in SERS and related effects, from the viewpoint of theory/models, materials and detection strategies, providing an up-to-date forum for setting the basis for future research in this vibrant field.

Science: general issues --- SERS (surface enhanced Raman scattering) --- Raman sensing --- SERS theory --- non-plasmonic SERS forensics --- food analysis --- biodiagnostics --- cultural heritage