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 29 for “"localized surface plasmon resonance (LSPR)"”.
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Studying DNA-Directed Nanoassembly, Hybridization and Mismatch-Discrimination via Plasmon Scattering of Gold Nanoparticles
This research study combined the exquisite plasmon scattering properties of spherical gold nanoparticles (nAu) and the specific recognition attributes of DNA to investigate the nAu-DNA assembly formation, and to apply the nanoassemblies for DNA detection. The nanoassembly structures, successfully …
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Design and characterization of plasmonic nanoprobes and interparticle interactions for surface enhanced raman scattering and biomolecular detection
… applications is the exploitation of the unique plasmonic properties of certain metal nanoparticles. A key challenge is the understanding of effective harnessing of the plasmonic coupling of the nanoparticles upon interacting with the targeted biomolecular species. This thesis work focuses on …
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Paper-Based Sensors for Contaminant Detection Using Surface Enhanced Raman Spectroscopy
Surface enhanced Raman spectroscopy (SERS) is highly promising analytical technique for trace detection of analytes. It is particularly well suited for environmental analyses due to its high sensitivity, specificity, ease of operation and rapidity. The detection and characterization of …
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Plasmonic Surface Modifications with Hard-Core/Soft-Shell Nanoparticles
… of this thesis is the creation of functional surfaces with hard-core/soft-shell plasmonic colloidal building blocks in respect of optical surface functionalization. With the focus on bottom up surface modification using self-assembly and template assisted self-assembly techniques. The optical …
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Infrared Energy Conversion in Plasmonic Fields at Two-Dimensional Semiconductors
<p>Conversion of infrared energy within plasmonic fields at two-dimensional, semiconductive transition metal dichalcogenides (TMD) through plasmonic hot electron transport and nonlinear frequency mixing has important implications in next-generation optoelectronics. Drude-Lorentz theory and …
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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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Engineering the Optical Properties of Gold Nanostructures for Biomedical Applications
… I have engineered these Au nanocages to have localized surface plasmon resonance: LSPR) peaks in the near-infrared region with strong absorption. These optical properties allow for the imaging of biological tissues at deeper penetration and the photoablation of cancer. By replacing …
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Ultrasensitive Biodetection based on Plasmonically-active Materials
… In the first part of the thesis, we harness the localized surface plasmon resonance (LSPR) of plas-monically active materials (e.g. “plasmonic patch”, “plasmonic fluor”), and show that plasmon-enhanced fluorescence can vastly improve the sensitivity of a broad variety of bioanalytical meth-ods, …
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Synthesis of Complex Plasmonic Nanostructures for Applications in Surface-Enhanced Raman Spectroscopy and Biomedicine
… noble-metal nanostructures for applications in surface-enhanced Raman spectroscopy: SERS) and biomedicine. Many of these potential applications are made possible by the strong localized surface plasmon resonance: LSPR) of noble-metal nanostructures, which is heavily influenced by the particle's …
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Study on the properties of gold nanoparticles as plasmonic sensing material for chlorothalonil detection
… and environment. An optical sensor implemented Localized Surface Plasmon Resonance (LSPR) phenomenon offers direct and simple detection method has been developed for chlorothalonil detection. In this study, a simple technique of seed-mediated growth method (SMGM) has been successfully performed …
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Plasmonic Au nanostructures for surface-enhanced raman spectroscopy
… applications owing to its low sensitivity. Surface-enhanced Raman spectroscopy (SERS) is capable of solving the issue of sensitivity by enormously amplifying the Raman signal through localized surface plasmon resonance (LSPR) that is induced by so-called plasmonic nanostructures. Since the …
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Implications of Shape Factors on Fate, Uptake, and Nanotoxicity of Gold Nanomaterials
… of the unique electro-optical properties (e.g., localized surface plasmon resonance [LSPR]) that originate from the collective behavior of their surface electrons. These nanoparticles are commonly developed and used for biomedical and industrial application. A recent report has predicted that the …
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Investigating the Electron Transport and Light Scattering Enhancement in Radial Core-Shell Metal-Metal Oxide Novel 3D Nanoarchitectures for Dye Sensitized Solar Cells
… light enabling a longer optical path-length, localized surface plasmon resonance (LSPR) or by near-field coupling between the surface plasmon polariton (SPP) and the dye excited state. Rapid, radial electron collection is of practical significance because it should allow alternate redox …
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Design and Synthesis of Metal Nanostructures for Plasmon-Enhanced Catalysis
… hinder wide adaptation of photocatalysis. Plasmonic metal nanoparticles have been recently proposed as a new type of catalysts with photoactivities. As already been widely used in thermocatalytic reactions, the strong light absorption capability from excitation of localized surface plasmon …
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Toward spatial control of gold nanorod surface functionalization
… applications. The resonant generation of a localized surface plasmon resonance (LSPR) at the GNR surface results in interesting optical properties and unique interactions with molecules. Combined with their biocompatibility, ease of synthesis and facile surface functionalization, these …
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Shape-Engineering Substrate-Based Plasmonic Nanomaterials
… protocols for the placement of nanomaterials on surfaces, a requisite for chip-based devices, are ill-developed. This dissertation serves to address this limitation by highlighting a series of syntheses related to the design of substrate-based nanoparticles whose size, shape and composition are …
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Sensing and Imaging Biomolecules with Plasmonic Nanoparticle Assemblies Coupled with Darkfield Microscopy
… electrons with light. This phenomenon is called localized surface plasmon resonance (LSPR). The LSPR frequency is extremely sensitive to the size, shape, refractive index at the metal-dielectric interface, and other nearby metal nanoparticles. In an assembly of proximal nanoparticles, the LSPR of …
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Creation of novel gold-nanorod-based localized surface plasmon resonance biosensors
Starting with a comprehensive review of both surface plasmon resonance (SPR) based and localized surface plasmon resonance (LSPR) based sensors, this thesis reports the studies on the development of a novel sensitive gold nanorod (GNR) based label-free LSPR optical fibre biosensor, and the …
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SYNTHESIS OF EFFICIENT PHOTOCATALYSTS IN EXTREME TEMPERATURE CONDITIONS FOR THE DEGRADATION OF AIR POLLUTANTS.
… of noble metal nanoparticles onto the STO surface, were also investigated. The localized surface plasmon resonance (LSPR) effect, along with the formation of the Schottky barrier between the metal and semiconductor, improves electron/hole pair separation, significantly benefiting the …
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Plasmonic Paper as a Novel Chem/Bio Detection Platform
… conduction electrons of metal nanoparticles. The resonance of such oscillation, termed localized surface plasmon resonance (LSPR), falls into the visible spectral region for noble metals such as gold, silver and copper. LSPR of metal nanostructures is sensitive to numerous factors such as …
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