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Download or read book Towards Near-field Single Molecule Surface Enhanced Raman Scattering Detection written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Author : Li-Lin Tay
Publisher : National Library of Canada = Bibliothèque nationale du Canada
ISBN 13 : 9780612536838
Total Pages : 109 pages
Book Rating : 4.5/5 (368 download)
Download or read book Towards Near-field Single Molecule Surface Enhanced Raman Scattering Detection [microform] written by Li-Lin Tay and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 2000 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Li-Lin Tay
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (133 download)
Download or read book Towards Near-field Single Molecule Surface Enhanced Raman Scattering Detection written by Li-Lin Tay and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The surface enhanced Raman scattering spectra of crystal violet and R6G and a number of colourless molecules adsorbed on silver colloid aggregates were studied as a function of power and position using a Raman microscope. The anti-Stokes signals of the dye molecules show line intensities much greater than the expected on the basis of the Boltzmann equilibrium population of the excited vibrational state. The large anti-Stokes intensities are attributed to the difference in Stokes and anti-Stokes Raman cross-sections resulting from pre-resonance or resonance Raman processes in the adsorbate-substrate complex rather than to optical pumping of molecular vibrational excited states as proposed by Kneipp and co-workers [Phys. Rev. Lett., 76, 2444, 1996]. Far-field imaging with a Raman microscope shows no significant inhomogeneity of the Raman enhancement in the images of the deposited self-affine silver colloid clusters down to spatial resolutions of I [mu]m2. A near-field scanning optical microscope (NSOM) operating with a shear-force feedback distance-control mechanism was employed to study the optical response of self-affine, deposited colloidal silver films. In the near-field region, NSOM is capable of an optical resolution down to 100 nm which is beyond the traditional diffraction limit of far field optics. Near-field Rayleigh microscopy with simultaneous topographic imaging indicates that the electromagnetic fields on the surface of the self-affine films are localized in regions smaller than the excitation wavelength. The pattern of high-field regions varies greatly with excitation wavelengths and does not correlate with topography. Local spectra of self-affine film showed distinct resonances arising with highly location-dependent frequencies. The most highly resolved of these resonances correspond to individual surface plasmon normal modes. Specific vibrational bands from the SERS spectra of plithalazine adsorbed on self-affine, silver colloid films were mapped over portions of the film surface in the near-field. The near-field Raman intensity maps display patterns of field localization in subwavelength regions. The pattern of field localization varies greatly with scattered wavelength. Observations in the near-field validate recent theories of the optical response of self-affine fractal objects [Phys. Report, 61, 272, 1996].
Author : Yukihiro Ozaki
Publisher : John Wiley & Sons
ISBN 13 : 111870357X
Total Pages : 466 pages
Book Rating : 4.1/5 (187 download)
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.
Author : Idrissa Sow
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (117 download)
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:
Author : Katrin Kneipp
Publisher : Springer Science & Business Media
ISBN 13 : 3540335676
Total Pages : 473 pages
Book Rating : 4.5/5 (43 download)
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.
Author : Ricardo Aroca
Publisher : John Wiley & Sons
ISBN 13 : 9780470035658
Total Pages : 260 pages
Book Rating : 4.0/5 (356 download)
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
Author :
Publisher : Elsevier
ISBN 13 : 008046789X
Total Pages : 339 pages
Book Rating : 4.0/5 (84 download)
Download or read book Tip Enhancement written by and published by Elsevier. This book was released on 2011-09-22 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the recent advances in the area of near-field Raman scattering, mainly focusing on tip-enhanced and surface-enhanced Raman scattering. Some of the key features covered here are the optical structuring and manipulations, single molecule sensitivity, analysis of single-walled carbon nanotubes, and analytic applications in chemistry, biology and material sciences. This book also discusses the plasmonic materials for better enhancement, and optical antennas. Further, near-field microscopy based on second harmonic generation is also discussed. Chapters have been written by some of the leading scientists in this field, who present some of their recent work in this field. ·Near-field Raman scattering·Tip-enhanced Raman spectroscopy·Surface-enhanced Raman spectroscopy·Nano-photonics·Nanoanalysis of Physical, chemical and biological materials beyond the diffraction limits·Single molecule detection
Author : Marc Lamy de la Chapelle
Publisher : CRC Press
ISBN 13 : 9814613339
Total Pages : 531 pages
Book Rating : 4.8/5 (146 download)
Download or read book Handbook of Enhanced Spectroscopy written by Marc Lamy de la Chapelle and published by CRC Press. This book was released on 2015-10-16 with total page 531 pages. Available in PDF, EPUB and Kindle. Book excerpt: Techniques such as Raman, infrared, fluorescence, and even nonlinear spectroscopies have recently grown in resolution and possibilities thanks to the use of nanostructured surfaces. Excitation of localized surface plasmon (LSP) and/or the use of specific shapes of nanostructures have made it possible to gain an incredible sensitivity in these spect
Author : Eric Le Ru
Publisher : Elsevier
ISBN 13 : 0080931553
Total Pages : 688 pages
Book Rating : 4.0/5 (89 download)
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
Author : Sandip Dhara
Publisher : CRC Press
ISBN 13 : 100084577X
Total Pages : 281 pages
Book Rating : 4.0/5 (8 download)
Download or read book Nanoscopy and Nanospectroscopy written by Sandip Dhara and published by CRC Press. This book was released on 2023-03-31 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book builds a narrative on the near-field optical and spectroscopic studies with an emphasis on plasmonic- and photonic-assisted nano-optics as a tool for superlensing. Deliberations on near-field studies using confined light in various applications are included along with their commercial implications. Single-molecule detection utilizing efficient surface-enhanced Raman scattering phenomenon in the far-field and plasmonic tip-enhanced Raman scattering studies in the near-field measurements for fast analysis up to trace level is discussed. Features: Covers the broad area of nano-optical spectroscopy from the perspective of putting the concepts and innovations in the field to use Discusses entire spectra of near-field optics and spectroscopy using light Explores gas/chemical sensing using surface plasmon resonance (SPR) in the Kretschmann configuration Includes dielectric nano-photonics and optical confinement Studies phonon behaviour using confined light for the analysis of chemical, biological, and other materials This book is aimed at graduate students and researchers in material science, analytical chemistry, nanotechnology, and electrical engineering.
Author : Katrin Kneipp
Publisher : World Scientific
ISBN 13 : 1786344254
Total Pages : 513 pages
Book Rating : 4.7/5 (863 download)
Download or read book Recent Developments In Plasmon-supported Raman Spectroscopy: 45 Years Of Enhanced Raman Signals written by Katrin Kneipp and published by World Scientific. This book was released on 2017-12-12 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface enhanced Raman scattering (SERS) might be one of the most impressive effects to demonstrate the power of plasmonic approaches in spectroscopy and became one of the 'triggers' for the rapidly emerging field of plasmonics.This book provides a review of some recent developments in SERS, such as tip enhanced Raman scattering (TERS), reports new experimental observations, sophisticated new SERS-active structures and substrates, new theoretical insight to explain the effect as well as exciting applications in various fields such as analytical science, biomedicine and nanotechnology.Written for graduate students and established researchers looking for inspiration for future work, its interdisciplinary nature makes the book suitable for readers in the fields of chemistry, physics, biology, medicine, nanotechnology and materials science.
Author : Zhong-Qun Tian
Publisher : John Wiley & Sons Incorporated
ISBN 13 : 9780470068083
Total Pages : 400 pages
Book Rating : 4.0/5 (68 download)
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.
Author : Xiaobin Xu (Ph. D.)
Publisher :
ISBN 13 :
Total Pages : 230 pages
Book Rating : 4.:/5 (982 download)
Download or read book Ultrasensitive Surface Enhanced Raman Scattering Nanomotors written by Xiaobin Xu (Ph. D.) and published by . This book was released on 2014 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Localized surface plasmon resonance resulting from the concerted oscillations of conduction-band electrons in noble-metal (Au, Ag) nanostructures greatly induces enhanced electric ([italic E]) fields in confined nanoscale locations, such as on the tips of nanorods or in the junctions of nanodimers. These [italic E]-field enhanced locations are called hot spots. In the vicinity of hot spots, Raman scattering spectra of biochemicals can be substantially amplified with an [italic E]4 dependence due to the [italic E]-field enhancement of both the incident light and Raman spectra. This is called surface enhanced Raman scattering (SERS). SERS is known for its high sensitivity in providing fingerprint vibrational information of molecules. It has triggered intense interest because of its potential applications for label-free and multiplex biochemical detection relevant to medical, environmental and defense purposes. However, the tremendous potential of SERS for ultrasensitive detection has still not materialized because of four major obstacles: (1) it is extremely difficult to obtain a large number of hotspots for sensitive and reproducible detection due to the stringent requirement of hot spots of only a few nanometers; (2) it is arduous to achieve ultrasensitivity for the detection of a single/few molecules; (3) it is challenging to assemble the hot-spots at designated positions for location predicable sensing; and (4) it is even more difficult to change the state-of-the-art static/passive sensing schemes into dynamic/robotized schemes and also to incorporate multi-functionality into a single SERS nanostructure. In this research, we addressed the aforementioned problems by rational design, fabrication and robotization of ultrasensitive SERS nanomotor sensors. A nanomotor sensor consists of a tri-layer structure with a three-segment Ag/Ni/Ag nanorod as the core, a thin layer of silica in the center, and uniformly distributed Ag nanoparticles as the outer layer. The inner metallic nanorod core is the key structure in realizing the concept of the robotization of nanosensors, which can be electrically polarized and thus efficiently manipulated by electric tweezers. The presence of the Ni segment in the metallic nanowire core also allows manipulation and assembling by magnetic interactions. The central silica layer provides a supporting substrate for the synthesis of the Ag nanoparticles and separates the Ag nanoparticles from the metallic nanorod core to eliminate the effect of plasmonic quenching. Finally, the outermost layer made of Ag nanoparticles with optimized sizes and junctions provides a large number of hot spots (~1200/ [mu] m2) for ultrasensitive SERS detection with single molecule sensitivity and an enhancement factor (EF) of 1.1×1010. Moreover, two additional SERS enhancement mechanisms were investigated, i.e., the optical management with nanophotonic devices and the near field effect, which can readily increase the EF by 10 and 2 times, respectively, to at least 1011. Finally, three applications of the SERS nanomotor sensors have been demonstrated: (1) the ultrasensitive SERS nanomotors were transported and assembled into a 3×3 array for location predicable sensing of multiplex molecules; (2) ultrasensitive SERS nanomotors were transported to individual living cells amidst many cells for single-cell bioanalysis; and (3) the SERS nanomotor sensors can be controlled to rotate by the electric tweezers for tunable biochemical release and detection. This research, exploring robotized nanosensors by integrating SERS and NEMS, is innovative in both material design and device concept, which could inspire a new device scheme for various bio-relevant applications.
Author : Alexander Fast
Publisher :
ISBN 13 : 9780355413823
Total Pages : 160 pages
Book Rating : 4.4/5 (138 download)
Download or read book Nanophotonics with Surface Enhanced Coherent Raman Microscopy written by Alexander Fast and published by . This book was released on 2017 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nonlinear nanophotonics is a rapidly developing field of research that aims at detecting and disentangling weak congested optical signatures on the nanoscale. Sub-wavelength field confinement of the local electromagnetic fields and the resulting field enhancement is achieved by utilizing plasmonic near-field antennas. This allows for probing nanoscopic volumes, a property unattainable by conventional far-field microscopy techniques. Combination of plasmonics and nonlinear optical microscopy provides a path to visualizing a small chemical and spatial subset of target molecules within an ensemble. This is achieved while maintaining rapid signal acquisition, which is necessary for capturing biological processes in living systems.Herein, a novel technique, wide-field surface enhanced coherent anti-Stokes Raman scattering (wfSE-CARS) is presented. This technique allows for isolating weak vibrational signals in nanoscopic proximity to the surface by using chemical sensitivity of coherent Raman microspectroscopy (CRM) and field confinement from surface plasmons supported on a thin gold film. Uniform field enhancement over a large field of view, achieved with surface plasmon polaritons (SPP) in wfSE-CARSS, allows for biomolecular imaging demonstrated on extended structures like phospholipid droplets and live cells. Surface selectivity and chemical contrast are achieved at ~ 70 fJ/mum2 incident energy densities, which is over five orders of magnitude lower than used in conventional point scanning CRM.Next, a novel surface sensing imaging technique, local field induced metal emission (LFIME), is introduced. Presence of a sample material at the surface influences the local fields of a thin flat gold film, such that nonlinear fluorescence signal of the metal can be detected in the far-field. Nanoscale nonmetallic, nonfluorescent objects can be imaged with high signal-to-background ratio and diffraction limited lateral resolution using LFIME. Additionally, structure of the extended samples' surfaces can be visualized with a nanoscale axial resolution providing topographic information.Finally, a platform for coherently interrogating single molecules is presented. Single-molecule limit SE-CARS on non-resonant molecules is achieved by means of 3D local field confinement in the nanojunctions between two spherical gold nanoparticles. Localized plasmon resonance of the dimer nanostructure confines the probe volume down to 1 nm3 and provides the local field enhancement necessary to reach single-molecule detection limit. Nonlinear excitation of Raman vibrations in SE-CARS microspectroscopy allows for higher image acquisition rates than in conventionally used single-molecule surface enhanced Raman spectroscopy (SERS). Therefore, data throughput is significantly improved while preserving spectral information despite the presence of the metal. Data simultaneously acquired from hundreds of nanoantennas allows to establish the peak enhancement factor from the observed count rates and define the maximum allowed local-field that preserves the integrity of the antenna. These results are paramount for the future design of time resolved single-molecule studies with multiple pulsed laser excitations, required for single-molecule coherence manipulation and quantum computing.
Author : Raquel Seruca
Publisher : CRC Press
ISBN 13 : 1351647334
Total Pages : 274 pages
Book Rating : 4.3/5 (516 download)
Download or read book Fluorescence Imaging and Biological Quantification written by Raquel Seruca and published by CRC Press. This book was released on 2017-09-06 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive reference work details the latest developments in fluorescence imaging and related biological quantification. It explores the most recent techniques in this imaging technology through the utilization and incorporation of quantification analysis which makes this book unique. It also covers super resolution microscopy with the introduction of 3D imaging and high resolution fluorescence. Many of the chapter authors are world class experts in this medical imaging technology.
Author : Ji-Xin Cheng
Publisher : Elsevier
ISBN 13 : 0323903371
Total Pages : 612 pages
Book Rating : 4.3/5 (239 download)
Download or read book Stimulated Raman Scattering Microscopy written by Ji-Xin Cheng and published by Elsevier. This book was released on 2021-12-04 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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. Led by Editor-in-Chief Ji-Xin Cheng, a pioneer in coherent Raman scattering microscopy, the editorial team has brought together various experts on each aspect of SRS imaging from around the world to provide an authoritative guide to this increasingly important imaging technique. This book is a comprehensive reference for researchers, faculty, postdoctoral researchers, and engineers. Includes every aspect from theoretic reviews of SRS spectroscopy to innovations in instrumentation and current applications of SRS microscopy Provides copious visual elements that illustrate key information, such as SRS images of various biological samples and instrument diagrams and schematics Edited by leading experts of SRS microscopy, with each chapter written by experts in their given topics
