Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 88 for “"surface enhanced Raman scattering"”.
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High pressure surface enhanced Raman scattering spectroscopy
Surface-enhanced Raman scattering spectroscopy (SERS) was combined with the diamond anvil cell technique to study molecular monolayers and single molecules under high pressure. Vibrational spectra up to 8 GPa were obtained for self-assembled monolayers (SAMs) of the energetic material simulant …
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Surface Enhanced Raman Scattering Studies in Ultrahigh Vacuum
We have observed Raman scattering signals from carbon monoxide adsorbed on silver films deposited on a 120 K substrate that are approximately 5 orders of magnitude stronger that would be expected from the known cross section. These studies were performed in an ultrahigh vacuum chamber. This …
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DNA diagnostic assays using Surface Enhanced Raman Scattering (SERS)
… oligonucleotides and silver nanoparticle surfaces, which generate strong surface enhanced Raman scattering (SERS) responses through specific hybridisation events which correlate to the presence of targeted sequences. During this study, the attraction of oligonucleotides onto metal …
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Development of a Platform for Surface Enhanced Raman Scattering Endoscopy
… open approaches. Molecular imaging using surface enhanced Raman scattering (SERS) nanoparticles represents a platform which is well-suited for cancer detection in-vivo. It has already been established that SERS offers the ability to carry out multiplex assays far in excess of what is …
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Surface enhanced Raman scattering based assays for DNA detection by
Surface enhanced Raman scattering (SERS) based molecular diagnostic assays for the detection of specific DNA sequences have been developed in recent years to compete with the more common fluorescence based approaches. Current SERS assays require either time consuming separation steps that increase …
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Engineering Noble-Metal Nanoparticles for Sensing and Imaging with Surface-Enhanced Raman Scattering
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 …
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DNA origami substrates as a versatile tool for surface-enhanced Raman scattering (SERS)
Surface-enhanced Raman scattering (SERS) is a promising tool to obtain rich chemical information about analytes at trace levels. However, in order to perform selective experiments on individual molecules, two fundamental requirements have to be fulfilled. On the one hand, areas with high local …
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Surface-enhanced Raman scattering and electron spectroscopic studies of copper and silver surfaces.
… the enhancement mechanisms associated with the surface enhanced Raman scattering (SERS) phenomenon. The approach taken in these investigations is to directly compare the SERS abilities of Cu and Ag surfaces using both SERS and electron spectroscopy. One set of experiments has been directed …
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Soft lithography - materials and applications to plasmonic sensing and surface-enhanced raman scattering
Made available in DSpace on 2010-05-14T20:49:43Z (GMT). No. of bitstreams: 2 Truong_Tu.pdf: 43938504 bytes, checksum: a79f2e17b49e8749b1272d63565e91fa (MD5) license.txt: 4059 bytes, checksum: 907fd9f6c2816e57946815d7d73b2f8e (MD5)
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Next-generation surface-enhanced Raman scattering (SERS) nanoparticles for biodiagnostics and intraoperative imaging
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-08-01
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Methods for the Detection of Biological Analytes on Dendritic Surface-Enhanced Raman Scattering (SERS) Substrates
… must be portable, affordable, and easy to use. Surface-enhanced Raman scattering (SERS) is a promising method for detecting chemical compounds in various media. However, traditional SERS struggles with direct detection due to weak signals and inconsistent results, stemming from low analyte …
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Design and Synthesis of Nanomaterials for Surface-Enhanced Raman Scattering, Fuel Cell Technology, and Photonics
In the first part of my dissertation, I developed two approaches for selectively probing the SERS activities of individual hot spots, i.e., experimentally detect the SERS signals only for the molecules that are trapped within the hot-spot region in individual Ag nanoparticle dimers. Then, I …
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The synthesis of stable nanotags for the detection of biomolecules using surface enhanced Raman scattering
… (UV-vis) spectroscopy, Resonance Raman scattering (RRS) and surface enhanced resonance Raman scattering (SERRS). Nanozymes have been applied to various different applications, some of which are explored in this thesis. The overall aim of this research was to investigate the …
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Design and characterization of surface-enhanced Raman scattering nanoparticles as spectroscopic probes for biological imaging
… has only been marginally realized to date. Surface-enhanced Raman spectroscopy (SERS) is an emerging technique that offers both chemical sensitivity and specificity. This dissertation examines the rational design, synthesis, characterization, and application of SERS-based optical probes …
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Surface-enhanced Raman scattering of metal nanoparticle assembly in agarose and highly ordered metal nanorod arrays
… during oblique angle deposition (OAD), as surface-enhanced Raman scattering (SERS) substrates. The effectiveness of MNPA has been effectively demonstrated previously using silver nanoparticles (AgNPs), but it is poorly understood how different NP growth conditions affect the SERS response. …
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Combining Thin Film Silver Nanoparticles and Microfluidics to Create Reusable and Versatile Surface-Enhanced Raman Scattering Devices
Surface enhanced Raman Scattering (SERS) spectroscopy is a powerful analytical tool that can be used for detecting a wide range of analytes at extremely low concentrations. Despite its utility, SERS is plagued by reusability and reproducibility issues that limit its user base and prevalence in the …
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Design and characterization of plasmonic nanoprobes and interparticle interactions for surface enhanced raman scattering and biomolecular detection
… of the nanoparticles responsible for the surface enhanced Raman scattering (SERS) and the localized surface plasmon resonance (LSPR). The interparticle plasmonic coupling induced SERS and LSPR characteristics are probed by experimental measurements and theoretical simulations for …
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Nano Cost Nano Patterned Template for Surface Enhanced Raman Scattering (SERS) for IN-VITRO and IN-VIVO Applications
Raman scattering is a well-known technique for detecting and identifying complex molecular level samples. The weak Raman signals are enormously enhanced in the presence of a nano-patterned metallic surface next to the specimens. This dissertation describes a technique to fabricate a novel, low …
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Development of novel series and parallel sensing system based on nanostructured surface enhanced Raman scattering substrate for biomedical application
… dielectric material caused by propagating surface plasmon resonance (SPR) or localized surface plasmon resonance (LSPR) enables a variety of new applications in different areas, especially biological sensing techniques. One of the promising biological sensing applications by surface …
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Development of carbon nanotube membranes for wastewater treatment and surface enhanced Raman scattering study of the membrane efficiency and eventual contamination caused
… of functional low fouling membranes showing enhanced properties such as high water flux and high rejection of organic matter with low molecular weight, by the subsequent inclusion of carbon nanotubes (CNTs) into porous polymeric membranes. The hollow CNT structure provides frictionless …
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