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 24 for “"Gold Nanostructures"”.
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Surface Modification and Self-Assembly of Gold Nanostructures
… self-assembly and surface modification of gold nanoparticles and nanorods. It begins with an efficient surface functionalization of gold nanoparticles with a liquid crystalline ligand that structurally resembles liquid crystal 5CB. Functionalized gold nanoparticles show increased solubility …
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Engineering the Optical Properties of Gold Nanostructures for Biomedical Applications
… the synthesis and optical properties of Au nanostructures with an aim to use them as imaging agents and photothermal transducers for the diagnosis and treatment of cancer. I have produced Au nanocages with hollow interiors and porous walls using the galvanic replacement reaction between Ag …
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π-π conjugated compounds and gold nanostructures for sensor design /
… the application of π-π conjugated compounds and gold nanostructures for electrochemical and optical sensor design is presented. π-π conjugated compounds and gold nanostructures are materials which enhances sensors sensitivity towards analyte, e.g. in Raman spectroscopy they can enhance Raman …
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Plasmonic gold nanostructures: optical properties and application in mercury detection
… thesis investigates the application of plasmonic gold nanostructures for mercury detection. Various gold and silver single nanostructures and gold nanostructure assemblies were characterised in detail by correlated single nanostructure spectroscopy and electron microscopy. Several routes for …
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Systematic Study of Parameters Affecting Unconventional Magnetism in Gold Nanostructures
… and interpretations of the novel magnetism of gold, by isolating two variables for testing. They are molecular dipole moment of the thiol that forms a self-assembled monolayer (SAM) on gold nanoparticles and thin-films, and roughness of gold thin-films. The first variable is chosen because the …
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Mapping plasmon excitations in gold nanostructures using electron energy loss spectroscopy
… properties of simulated and fabricated Au nanostructures using an electron beam as a source of excitation. The motivation for the this work comes from the applications of these nanostructures and the need to understand the physics behind them. We introduce the concept of plasmonics in …
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“Green” synthetic methodologies for the fabrication of gold nanostructures with photothermal properties for multi-responsive therapies [Metodologie sintetiche “ Verdi” per la fabbricazione di nanostrutture d'oro con proprietà fototermiche per terapie multi-reattive]
Il basso tasso di ricambio dei nuovi farmaci, unito alla resistenza multipla dei farmaci da parte delle cellule tumorali e dei batteri, rende necessaria la ricerca di nuovi approcci terapeutici. Le terapie fototermiche (PTT) e fotodinamiche (PDT), basate sul rilascio foto-controllato di calore e …
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Study of Plasmonic Properties of the Gold Nanorods in the Visible to Near Infrared Light Regime
<p>Nanostructures of noble metals show unique plasmonic behavior in the visible to near-infrared light range. Gold nanostructures exhibit a particularly strong plasmonic response for these wavelengths of light. In this study we have investigated optical enhancement and absorption of gold nanorods …
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Development of optical field emitter arrays
… array structures, including vertically-standing gold nanopillars and silicon tips, in-plane gold nanostructures, and metallic line gratings, were performed via theoretical analysis and numerical simulations. Enhancement of the optical nearfield and power absorption was achieved by geometrical and …
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Molekulių įspaudų technologijos taikymas melamino jutikliuose /
… the effect of the various ways to introduce the gold nanostructures into the system. It has been experimentally confirmed that the best synthesis and analysis medium for melamine detection in the present system is acidic, in BRB at pH 3. The data show that reducing the polymer layer positively …
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Bioinspired fabrication and assembly of hybrid materials for sensing and biomedical applications
… direct the morphology evolution of hierarchical gold nanostructures is demonstrated. These hybrid materials possess attractive properties for applications in sensing, biomedicine, catalysis and electronics.
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Rational Design and Advanced Fabrication of Metallic Nanostructures for Surface-Enhanced Raman Spectroscopy
… between an optical field and metallic nanostructures to magnify the electromagnetic field in the vicinity of the nanostructure, resulting in an amplified signal of the vibrational fingerprints of the adsorbed molecules onto the metallic surface. In this Thesis, the rational design and …
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Fabrication of Organized Anisotropic Materials via Evaporative Self-Assembly
… of the characteristics and applications of solid gold nanostructures followed by a discussion of several important aspects of nanofabrication and a discussion of self-assembly in the context of extracellular matrix and cell culture. Chapter 2 describes the crystallization of gold nanotriangles …
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Design and characterization of surface-enhanced Raman scattering nanoparticles as spectroscopic probes for biological imaging
… the optical properties of the probe. Metallic nanostructures consisting of noble metals such as gold and silver were investigated as probes because they provide intense surface-enhancement effects and the ability to tune their optical properties as desired. In particular, gold nanostructures …
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Effects of Geometry on Plasmonic Properties of Nanostructures
… the measurement of self-assembled, twisted gold nanorod dimers. The same method is used to characterize racemically assembled dimers of gold dumbbell shaped particles where individual dimers were shown to have chiral responses, despite no ensemble chiral response. Triangular bifrustrum …
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Surface-Enhanced Vibrational Spectroscopies using Electrodeposited Anisotropic Gold Nanoparticles
Electrodeposited anisotropic gold nanostructures with the morphology of daggers are produced from a plating solution of gold (III) salt and 4-methoxypyridine (MOP) on a thin film indium tin oxide (ITO) working electrode. The gold nano-daggers (AuND) were demonstrated to be suitable for …
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Tunable Linear and Nonlinear Metasurfaces Based on Hybrid Gold-Graphene Plasmons
… I present work utilizing graphene with patterned gold nanostructures that form a coupled plasmonic system, and which can tune the transmitted light with a modulation of up to 17% at 11.5 m, a region which lies within an atmospheric window. In addition, this system is shown to enable a nonlinear …
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Electrochemical fabrication of AuCo nanostructures
… Co is etched from CoAu nanowires, rough, porous gold nanostructures will be left behind, which could be used as novel catalysts. In this study, the electrodeposition of Au/CoAu multilayered nanowires and nanotubes in nanoporous templates was explored from a non-cyanide electrolyte. The …
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Tin Sensitization For Electroless Plating
… lab has successfully fabricated ordered array of gold nanostructures, for example Dr. Blake fabricated gold nano rings by top-down electron-beam lithography, and Dr. Ahn fabricated hexagonal gold nano particles by bottom-up silica sphere self-assembly. Dr. Jang studied the silver catalytic …
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The Development of Novel Electrochemical Sensors Based on Innovative Materials
… sensing is achieved through the integration of gold nanostructures onto mesoporous LIG. This section also investigates the transferability of LIG-based materials toward practical applications, including the use of fused filament fabrication to stamp conductive LIG patterns onto 3D-printed …
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