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Showing 1 to 20 of 62 for “"Gold nanorods"”.
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Surface engineering of gold nanorods
Made available in DSpace on 2018-09-04T20:27:09Z (GMT). No. of bitstreams: 3 HINMAN-DISSERTATION-2018.pdf: 15683760 bytes, checksum: 41f793012c94d243a8b79b87660cede3 (MD5) LICENSE.txt: 4210 bytes, checksum: fa2d52858281080aa182894713d8a447 (MD5) PROQUEST_LICENSE.txt: 4556 bytes, checksum: …
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Photothermal properties and applications of gold nanorods
Gold nanorods (GNRs) with their special optical and photothermal properties have attracted attention recently for their potential applications in fields such as photothermal therapy, drug delivery, biomedical imaging and chemical sensing. These anisotropic gold nanocrystals have tunable surface …
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Synthetic routes to silica-coated gold nanorods
The surface functionalization of gold nanorods has numerous applications for medical therapeutics, sensing, and other optoelectronic enhancement related phenomena. Surface chemistry of these particles can be altered by tuning the charge, chemical groups, and reactivity at the surface. Specifically, …
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Control of blood clotting using gold nanorods
… to externally control blood clotting using gold nanoparticles. Gold nanorods (NRs) have unique size and shape-dependent optical properties that can be used for externally controlled release of biomolecules by laser excitation. Femtosecond pulsed laser irradiation at the NR longitudinal …
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Synthesis and alignment of gold nanorods for optical applications
Gold nanorods are of great interest in many areas of science and technology due to their versatility and electro-optical properties. There are simple synthesis methods that allow for shape control and the ability to change the chemistry on the surface of the gold nanorods. One of the interesting …
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Plasmonic Enhancement of Nonlinear Optical Responses by Gold Nanorods
… films via localized surface plasmon resonance of gold nanorods. By matching the plasmon resonance of the gold nanorods to the wavelength of the fundamental light, it is possible to greatly enhance the SHG efficiency. To demonstrate this, the surface of the gold nanorods was functionalized with a …
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Untangling energy dependent radiation damping and chemical interface damping in gold nanorods
… to systematically study the plasmon linewidth of gold nanorods. By coating gold nanorods with an insulating material, we can isolate radiation damping contributions and fully account for energy-dependent radiation damping with a simple analytical model. We apply this analysis to …
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NANOCOMPOSITES CONTAINING GOLD NANORODS FOR TWO-PHOTON IMAGING, PHOTODYNAMIC THERAPY AND DRUG DELIVERY
… nanocomposites containing mesoporous silica and gold nanorod are considered as the most highly researched field owing to their novel properties of single-component structures. Gold nanorod is well-known for its large two-photon action cross section (10E4 GM), high two-photon luminescence, …
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Harnessing the optical properties of gold nanorods: fluorescence enhancement, biosensing and photothermal therapy
… synthesis, characterization, and application of gold nanomaterials, especially gold nanorods. Due to their small size, ease of functionalization, and uniquely tunable optical properties, gold nanorods have potential application in solar cells, sensing, bioimaging, drug delivery, and cancer …
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Investigation of gold nanorods as a sensing material in plasmonic sensor for triclopyr butotyl detection
Gold nanorods (GNRs) have a unique optical property of metal nanoparticles (MNPs) due to the localised surface plasmon resonance (LSPR) effect, which depends on the size, shape and dielectric property of the surrounding medium. LSPR, or commonly known as the plasmonic effect, refers to the optical …
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Gold nanorods: Applications in chemical sensing, biological imaging and effects on 3-dimensional tissue culture
Gold nanoparticles have attracted great interest in the last decade for applications in biochemical detection, imaging, and therapeutics, due to their useful optoelectronic properties. Interest in this area has recently focused on engineering the surface of the nanoparticles, because of the ease in …
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Study of Plasmonic Properties of the Gold Nanorods in the Visible to Near Infrared Light Regime
… 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 with different thickness using finite element method …
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Electric Field Manipulation of Gold Nanorods: Characterization of Far-Field Alignment and Spatial Positioning Through Optical Response Imaging Techniques
… fields to align and transport micron length gold nanowires by using darkfield optical microscopy to track position. Other studies have characterized the alignment of nanometer length gold nanorods by observing changes in the absorbance spectrum. A remaining challenge is to develop methods to …
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Expanding the potential of gold nanorods: From size dependence and intrinsic anisotropy to formulating a new class of surface coatings
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-05-01
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Molecular engineering of gold nanorod surfaces: towards improved physical properties and understanding nanoparticle-cell interactions
"Gold nanorods have unique optical properties and various promising applications. Wet chemical synthesis of gold nanorods requires the use of cetyl trimethylammonium bromide (CTAB) as shape-directing surfactant, which form a bilayer on the surfaces of gold nanorods. CTAB bilayer stabilizes the …
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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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Synthesis and characterization of metallic nanoparticles with photoactivated surface chemistries
… of nanoparticles. We focused on elongated shaped gold nanorod due to its unique surface plasmon resonance and probable biomedical applications. In this research we formed a dumbbell shape assembly of nanoparticles in suspension. A probable application for these assemblies can be in vivo imaging. …
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Measuring Nonlinear Properties of Graphene Thin Films Using Z-Scan Technique
… graphene thin films without and with gold nanorods (NFG, AuNFG, FG, and AuFG) on glass substrates as well as gold nanorods (AuNRs) in deionized water through using the built Z-scan system. Then finally, the effects of gold nanorods on enhancing the thermal nonlinearity of graphene were …
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Hard and soft coatings on gold nanoparticles at the nano-bio interface
This dissertation explores surface chemistry of gold nanoparticles, with a special focus in developing analytical methods to decipher the environment of small molecule ligands and biomolecule coronas at the molecular level. Chapter 1 introduces the physical and chemical properties of gold …
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Investigating the impact of gold nanoparticles on pulmonary cells: From 2D to 3D culture systems
… properties on the nanoscale. Interest in using gold nanoparticles in biological applications is growing ranging from sensing to cancer therapy due to their tunable sizes and shapes, unique optoelectronic properties, and straightforward surface modification. The advancement of fine-tuning of gold …
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