Download or read book Deep ultraviolet Surface enhanced Raman Scattering and Fluorescence Using Aluminum Nanostructures written by Shankar Kumar Jha 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 Far and Deep Ultraviolet Spectroscopy written by Yukihiro Ozaki and published by Springer. This book was released on 2015-07-09 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the first comprehensive work to be published on far-ultraviolet (FUV) and deep-ultraviolet (DUV) spectroscopy, subjects of keen interest because new areas of spectroscopy have been born in the FUV and DUV regions. For example, FUV spectroscopy in condensed matter has become possible due to the development of attenuated total reflection/FUV spectroscopy. As other examples, DUV surface-enhanced Raman scattering and DUV tip-enhanced Raman scattering have received great attention. Imaging by DUV spectroscopy has also become an area of interest. More recently, FUV and DUV spectroscopy have shown potential for applications in several fields including industry. All these topics are described in this book. Doctoral students and researchers in universities and national research institutes as well as researchers in various industries will find this volume highly useful.

Download or read book Investigation of Nanostructured Aluminum Films for Surface enhanced Raman Scattering in the Ultraviolet written by Natascha Knowlton and published by . This book was released on 2014 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Far and Deep Ultraviolet Spectroscopy written by Yukihiro Ozaki and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the first comprehensive work to be published on far-ultraviolet (FUV) and deep-ultraviolet (DUV) spectroscopy, subjects of keen interest because new areas of spectroscopy have been born in the FUV and DUV regions. For example, FUV spectroscopy in condensed matter has become possible due to the development of attenuated total reflection/FUV spectroscopy. As other examples, DUV surface-enhanced Raman scattering and DUV tip-enhanced Raman scattering have received great attention. Imaging by DUV spectroscopy has also become an area of interest. More recently, FUV and DUV spectroscopy have shown potential for applications in several fields including industry. All these topics are described in this book. Doctoral students and researchers in universities and national research institutes as well as researchers in various industries will find this volume highly useful.

Download or read book Surface Enhanced Fluorescence and Raman Spectroscopy Using Noble Metal Nanostructures written by Tom Ritman-Meer and published by . This book was released on 2009 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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

Download or read book Surface Enhanced Raman and Fluorescence Spectroscopy Using AG and AU Nanostructures written by Signe Damm and published by . This book was released on 2015 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Epitaxial Aluminum Surface Enhanced Raman Spectroscopy Substrates for Large Scale 2D Material Characterization written by 索尼婭 and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Enhancing Raman and Fluorescence Spectroscopies with Nanosphere Lithography Platforms written by Shabila Fayyaz and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Localized surface plasmon resonance (LSPR) is of particular interest to enhance the limit of detection for spectroscopic techniques such as Raman and fluorescence via a surface enhancement from metallic nanostructures. In this study, using nanosphere lithography (NSL) technique, a series of gold nanostructures over glass surfaces are prepared. These nanostructures are used to record the surface enhanced Raman scattering (SERS) spectrum of benzenethiol and azobenzene thiol and the vibrational modes are compared to literature. Once protected with an ultrathin layer of SiO2, the gold nanostructures are investigated using scanning confocal fluorescence microscopy to detect the fluorescence from a dye solution. Herein, we show that the NSL-fabricated nanotriangle arrays made with particle sizes with dimensions closer to the excitation wavelength can be used to study the SERS spectrum of the molecule and, in the case of surface enhanced fluorescence (SEF), display the most intense hot-spots for each bow-tie assembly oriented along the polarization direction of the impinging light.

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:

Download or read book UV VIS and Photoluminescence Spectroscopy for Nanomaterials Characterization written by Challa S.S.R. Kumar and published by Springer Science & Business Media. This book was released on 2013-02-19 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt: Second 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 UV-visible and photoluminescence 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 in the related fields.

Download or read book One dimensional Plasmonic Nanostructures Prepared by Template Synthetic Method for Surface enhanced Raman Spectroscopy SERS written by Yong-Tae Kim and published by . This book was released on 2018* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanostructures; Anodized aluminum oxide; Electrochemical deposition; Plasmonics; Surface-enhanced Raman spectroscopy

Download or read book Metallic Nanostructures for Surface Enhanced Raman Scattering Detection written by Chao Qiu and published by . This book was released on 2011 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Metal Nanostructures for Enhanced Optical Functionalities written by Min Qiao 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 Degradation Resistant Surface Enhanced Raman Spectroscopy Substrates written by Ryan Dale Scherzer and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Raman spectroscopy is employed by NASA, and many others, to detect trace amounts of substances. Unfortunately, the Raman signal is generally too weak to detect when very small, but non-trivial, amounts of molecules are present. One way around this weak signal is to use surface enhanced Raman spectroscopy (SERS). When used as substrates for SERS, metallic nanorods grown using physical vapor deposition (PVD) provide a large enhancement factor to the Raman signal, as much as 1012. However, Silver (Ag) nanorods that give high enhancement suffer from rapid degradation as a function of time and exposure to harsh environment. Exposure to harsh environments is an enormous issue for NASA; considering all environments experienced during space missions will be drastically different from Earth regarding atmosphere pressure, atmosphere composition, and environmental temperature. Au and Ag nanorods suffer from a thermochemical kinetic phenomenon where the surface atoms diffuse and cause the nanostructures to coalesce towards bulk structure. When in bulk, SERS enhancement is lost and the substrate becomes useless. A stable structure for SERS detection is designed through engineering the barriers to surface diffusion. Aluminum (Al) nanorods are forced to undergo surface diffusion through thermal annealing and form rough mounds with a stable terminating oxide layer. When Ag is deposited on top of this Al structure, it becomes kinetically bound and changes to physical structure become impeded. Using this paradigm, samples are grown with varied lengths of Ag and are then characterized using scanning electron microscopy (SEM) and Ultraviolet-Visible spectroscopy. The performance of the samples are then tested using SERS experiments for the detection of trace amounts of rhodamine 6G, a 'gold standard' analyte. Characterization shows the effectiveness of the Raman substrates remains stable up to 500°C. Transitioning to basic scientific investigation, next is to strive to isolate the individual impacts of chemical and physical changes to the Ag nanostructure and how they affect the Raman signal. Substrates are compared over the course of a month long experiment to determine the effects of vacuum storage and addressing the effects of chemical adsorbance. Additionally, this was attempted by comparing the signal degradation of Ag nanorods to that of Au, which is known to be chemically inert, allowing for the separation of chemical and physical effects. Although Ag and Au have similar melting points, Ag physically coarsened significantly more. FTIR also showed significant chemical contamination of the Ag, but not Au. A hypothesis is proposed for future investigations into the chemical changes and how they are coupled with and promote the physical changes in nanostructures. Overall, the novel SERS substrate engineered here may enable the detection of trace amounts of molecules in harsh environments and over long timescales. Conditions such as those found on space missions, where substrates will experience months or years of travel, high vacuum environments, and environments of extreme temperatures.

Download or read book Nanosphere Lithography Fabricated Nanostructures for Use in Surface enhanced Raman Scattering Biosensing Applications written by Kirsty Gibson and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Engineering Noble metal Nanoparticles for Sensing and Imaging with Surface enhanced Raman Scattering written by Matthew Rycenga and published by . This book was released on 2011 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research investigated the surface-enhanced Raman scattering (SERS) from Ag and Au nanoparticles with an aim to better understand the SERS mechanism and to implement this technique for single-molecule detection and imaging. In addition, SERS was used as a sensitive probe to study molecules confined to a nanoparticle's surface. The first part of this work focused on measuring the SERS from different Ag and Au nanoparticles and determining how their structural and physical properties affect SERS. The effects of shape, size, and Au-Ag composition on SERS are determined using Ag nanocubes, Ag nanospheres, and Au-based nanocages. I also demonstrate several techniques used to study the SERS of single nanoparticles, one at a time, which has provided significant insight into the SERS effect. I then discuss the development of a new and simple way to create large SERS enhancements by taking advantage of the supporting substrate of a nanoparticle. In this technique, simply depositing a single Ag nanocube on a metal substrate can increase its SERS enhancements to levels capable of single-molecule detection. In the second part of this work I used SERS as a molecular probe to understand how glucose molecules interact at a nanocube's surface, and as an optical thermometer to quantify the temperature change at the surface of a Au-based nanocage during the photothermal effect. The nanoparticles were coated with highly ordered self-assembled monolayers (SAMs), and then SERS was used to determine the structural and conformational changes in the SAMs as a result of perturbations from the environment. This allowed me to use SERS to directly probe the molecules on the nanoparticle's surface. In the final part of this work, I used nanocubes and nanospheres in SERS imaging. The resolution, sensitivity, and penetration depth are determined for our Raman microprobe system. In addition, phantoms are used to generate SERS images of three-dimensional microstructures.