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 120 for “"Photothermal"”.
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Photothermal energy conversion by plasmonic nanoparticles
Photothermal energy conversion is important when designing optically active devices based on plasmonic nanoparticles. Many early applications of these nanoparticles, like photothermal tumor ablation, drug delivery, and microfluidic devices, depend on the conversion of light to heat. In this …
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Photothermal properties and applications of gold nanorods
… 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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Electronic band structure variations in photothermal catalytic materials
Novel photothermal catalytic devices based on layered semiconductors have great promise as efficient overall water splitting devices for hydrogen production, which can help make H2 into an economically viable alternative to fossil fuels. The effectiveness of the proposed device is sensitively …
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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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Photothermal effects of pulsed laser irradiation of biological tissue
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
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Novel Photothermal Materials and Thermally Engineered Membranes for Solar Desalination
… not readily available. To address this problem, photothermal driven membrane distillation (PMD), where membrane distillation is integrated with photothermal materials that can effectively convert light to thermal energy, has been recognized as an attractive and sustainable technology for …
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Ultrasound and photoacoustic imaging to guide and monitor photothermal therapy
Photothermal cancer therapy is a potential alternative to surgery and involves selective tissue destruction using thermal energy. Targeted photoabsorbers, used in conjunction with matching a continuous wave laser, make photothermal therapy both noninvasive and tumor-specific. However, to become …
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Internal atomic-scale structure and photothermal dynamics of heterostructured nanomaterials
In this thesis we adopt a multimodal materials characterization approach to unravel the internal structure and the photoexcited electronic and geometric structural dynamics of Cd𝑥Zn1−𝑥Te/CdSe core/shell quantum dots (QDs). These QDs belong to a broader class of heterostructured II-VI semiconducting …
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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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Non-Thermal Contribution to Ruthenium Photothermal Catalyst in Carbon Dioxide Methanation
… and the release of CO2 into the atmosphere. Photothermal catalysis offers a promising strategy for sustainable chemical transformations by combining thermal and photonic energy to accelerate reactions under mild conditions to convert greenhouses into energy sources. However, quantifying …
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Quantitative and Qualitative Evaluation of Dental Structures using Multispectral Photothermal Diagnostic Techniques
Enhanced Truncated-Correlation Photothermal Coherence Tomography (eTC-PCT) is a dynamic frequency-domain imaging modality for non-invasive imaging of samples. The original embodiment of eTC-PCT uses an 808-nm diode laser to generate 3D photothermal images of samples. In order to obtain molecular …
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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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Polymer Dynamic Organic Theranostic Spheres for Photothermal Therapy and Fluorescent Imaging of Cancer
Nanoparticle mediated photothermal ablation of cancer is a promising technique that utilizes light energy to destroy cancer cells. Specifically, nanoparticles that absorb in the near infrared (NIR) region of light, 700 - 900 nm, are optimal because these wavelengths are an absorption minimum for …
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Induction of Immunogenic Cell Death via Nanoparticle-Mediated Dual Chemotherapy and Photothermal Therapy
… of nanoparticles (NPs) for combinatory chemo-photothermal therapy (PTT) to induce immunogenic cell death (ICD) and target the medication to the tumor site. ICD overall causes the activation of dendritic cells (DC) and T cells to initiate an antitumor immune response and is characterized by the …
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Harnessing the optical properties of gold nanorods: fluorescence enhancement, biosensing and photothermal therapy
… energy allows for the use of gold nanorods in photothermal heating applications. Optical applications such as these may be realized by carefully engineering the size, shape, surface chemistry of gold nanorods. The focus of this dissertation is in exploring how gold nanorod surface properties …
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Photothermal and Photoelectric Effects in Lithium-Ion Batteries: Mechanistic Insights and Performance Enhancement
… analogues (PBAs) were then selected for their photothermal heating efficiency and compatibility as cath- odes in photothermal-enhanced Li-ion batteries. Electrochemical testing under illuminated and dark conditions demonstrated that light-induced heating boosted battery performance, increasing …
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