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 12 of 12 for “"photothermal effect"”.
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Multifunctional CuS Nanoparticles for Imaging Guided Photothermal Ablation Therapy
… radiotracer for PET imaging, and can be used for photothermal ablation therapy using near-infrared laser irradiation (Zhou, Zhang et al. 2010). Based on these novel [64Cu]CuS NPs, we have designed and investigated two different types of NPs for targeting delivery and dual imaging agents. Methods: …
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Label-free Photothermal Quantitative Phase Imaging with Spectral Modulation Interferometry
The photothermal effect is a way in which chemical contrast can be measured as an optical pathlength or phase change. When a chemical species in a sample absorbs optical energy at a particular wavelength, this absorption raises the temperature at these points in the sample via the photothermal …
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Gold nanorod based nanoprobes for biomedical applications
… gold nanorods (LGNRs), making the SGNRs good photothermal agents. Moreover, the SGNRs have ease of subcellular accessibility, high internalization rate and large surface area to volume ratio for binding of analytes. These attributes make the SGNRs good candidates in various biomedical …
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Investigation and Characterization of Composite Silica Aerogel Nanostructures Obtained Via Magnetron Sputtering
… Cu thickness. Infrared imaging showed a photothermal effect. The temperatures of samples comprising 100 nm of Cu sputtered onto Silica aerogels reached 94.8°C under solar-simulated irradiation at an intensity of 100 mW/cm^2. These findings provide fundamental context to an under explored …
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Engineering the Optical Properties of Gold Nanostructures for Biomedical Applications
… 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 nanocubes and AuCl<sub>4</sub>-. I have engineered these Au …
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Engineering Noble-Metal Nanoparticles for Sensing and Imaging with Surface-Enhanced Raman Scattering
… 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 …
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Self-assembly of inorganic nanoparticle amphiphiles for biomedical applications
… to specific location can be used to enhance the photothermal effect of the vesicles in cancer imaging and therapy. Finally, we reported that the use of a microfluidic flow-focusing device for the self-assembly of JVs that can act as vesicular motors. The vesicles can be used to encapsulate active …
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Ultrafast and Nonlinear Spectroscopy of Colloidal Nanomaterials
… visible and near-infrared regions and enhanced photothermal effect. Transient absorption measurements determine that the phonon-phonon scattering lifetime is considerably faster in the core-shell-shell nanoparticles than in the gold nanospheres and gold nanorods, which contributes to the higher …
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Non-metallic nanostructures for light-driven chemistry and catalysis
… plasmon resonance (LSPR) oscillations. This effect has been harnessed both for harvesting visible light and for catalyzing thermodynamically uphill reactions. However, the scarcity and high cost of coinage metals limit their widespread application as plasmonic catalysts. To address this …
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Photothermal and Photochemical Tumor Response to Carbon Nanotube Mediated Laser Cancer Therapy
The objective of this study was to determine the photothermal and photochemical tissue response to carbon nanotube inclusion in laser therapy using experimental and computational methods. In this study, we specifically considered varying types and concentrations (0.01-1 mg/ml) of carbon nanotubes …
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Optimizing Adsorption Energies of Reaction Products and Intermediates on Metal/Metal Oxide Catalysts to Achieve High Activity and Tunable Selectivity in Solid-Gas Phase Reactions
… designed a two-temperature process to use a photothermal effect to desorb methanol by quickly flipping the reaction temperature to a higher set temperature. In Chapter 3, the key to achieving high CO selectivity in CO2 hydrogenation reaction is to control the binding strength of reaction …
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Non-traditional catalysis by plasmonic nanostructures
… however, this photoenhancement was due to the photothermal effect. Atmospheric conditions dictated the pathway of the reaction. Under ambient conditions, the reaction favored a polymerization reaction, whereas a CO2-saturated atmosphere enabled carboxylation. Without the presence of CO2 …