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 22 for “"Nanodiamonds"”.
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Luminescent nanofluids based on perovskite materials and nanodiamonds
… perovskite (ABX3) quantum dots (QDs) and nanodiamonds stand out. However, the emission wavelength of perovskite QDs typically lies within the visible range, and the potential for using nitrogen-vacancy (NV-) and silicon-vacancy (SiV-) centres in nanodiamonds for temperature sensing remains …
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Effects of Carboxylated Nanodiamonds on Macrophages During and After Differentiation
<p>Nanodiamonds (ND) are a carbon-based nanomaterial that are increasingly being proposed for developing novel imaging techniques, as carriers of biomolecules and therapeutic drugs, as coatings for implants, and for other biomedical applications. The exceptional chemical, mechanical, and optical …
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Electrochemical modulation of fluorescence of nitrogen vacancy centers in nanodiamonds for voltage sensing applications
… fluorescence in high pressure high temperature nanodiamonds is demonstrated in an electrochemical cell. Following this, the mechanisms for NV response to externally applied electrical bias are investigated in other electrochemical cell morphologies, capacitors, and interdigitated electrode …
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Development of a platform for sensing cellular electrical activity using nitrogen vacancy centers in nanodiamonds
… the staining of neurons with hydrogen-terminated nanodiamonds (NDs) with NV centers is improved. Together, the improved staining of neurons with nanodiamonds along with using the electrophysiology setup to observe modulation forms a platform for future study of the NV center as a voltage sensor.
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Wide-field magnetic field imaging with nitrogen vacancy centers in nanodiamonds at high frame-rates
… to their small size, NV centers in nanocrystals (nanodiamonds) offer magnetic field imaging with high spatial resolution. Competitive magnetic field imaging methods such as magnetic force microscopy (MFM) or superconducting quantum interference devices (SQUID) either image serially, and are thus …
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Nanodiamonds for biological applications: Synthesis by laser ablation and sensing of local magnetic environment by optical spectroscopy of NV centers
Nanodiamonds (NDs) are the subject of intense investigation for their unique physical and chemical properties. Due to high hardness, optical transparency and biocompatibility, NDs find applications in tribology, catalysis and drug delivery. When enriched with nitrogen-vacancy (NV) centers, NDs can …
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Interfacing spin-based quantum sensors with complex systems
… chemically functionalised, diamond nanocrystals (nanodiamonds) offer sensing in systems inaccessible with bulk diamonds. Of particular interest is magnetometry and thermometry in biological systems. This thesis explores interfacing nanodiamonds host NV centres with complex systems for decoherence …
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Searching for M13 bacteriophage with high affinity for nanodiamond particles
Nanodiamonds have potential in biomedical uses, as they are non-toxic and exhibit non-blinking fluorescence behavior when they are enriched with nitrogen vacancy centers. In order for them to be useful in biomedical applications, they need to be functionalized. In this experiment, a pIII library of …
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Development of Nanodiamond and Raman Spectroscopy Sensing Methods towards the Measurement of Mitochondrial Membrane Potential in Single Cells
… instrument. An investigation of the impact of nanodiamonds as nanoparticles for biological sensing within live breast cancer cells, including surface modification by oxidation, was then conducted. By developing both techniques together, this project leverages the complementary advantages of …
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Chemistry of novel nanoscale carbon materials: Nanodiamond and carbon nano-onions
… for preparation of the series of functionalized nanodiamonds by subsequent reactions with alkyllithium reagents, diamines, and amino acids. The fluoro-nanodiamond and all derivatives were characterized by SEM, TEM, XRD, TG-MS, FTIR, XPS, and Raman measurements. In comparison with the pristine …
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Atomic structures of carbon nanomaterials studied by coherent electron diffraction
… areas by a small twist. The atomic structure of nanodiamonds synthesized by denotation method was studied by electron diffraction, imaging and spectroscopy. The results show that the detonation nanodiamonds have a majority of cubic diamond core smaller than the particle size. In addition, …
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Investigating approaches to enhance sensing capabilities of nitrogen-vacancy centres in nanodiamond
… centre. Furthermore, the graphite layer covering nanodiamonds can be removed by annealing. This does not have negative effects on the spin properties of the hosted NV centres but enables functionalisation of the surface and therefore advanced in-vivo measurements. Finally, the capabilities of the …
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Nanocarbons as charge carriers in organic solar cells
… Therefore, they show higher PCE. Functionalized nanodiamonds (ND) are also introduced to C60 to synthesize C60-ND-COOH composite by taking the advantage of their small size distribution (4-5 nm) and modest charge mobility. The NDs have shown the ability to enhance short circuit current density …
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Dynamics Of Biopolymers On Nanomaterials Studied By Quasielastic Neutron Scattering And Mdsimulations
… include a drug delivery system containing Nanodiamonds with nucleic acid (RNA), and two specific model proteins, β-Casein and Inorganic Pyrophosphatase (IPPase). </p> <p> RNA and nanodiamond (ND) both are suitable for drug-delivery applications in nano-biotechnology. The architecturally …
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Engineered Nanomaterials for Targeted Imaging and Therapy
… focuses on the development of radiation- damaged nanodiamonds (DNDs), a type of carbon-based nanoparticles, for the detection of solid tumors using a photoacoustic (PA) imaging technique. In chapter 2 of this dissertation, DNDs are proposed as ideal optical contrast agents for PA imaging in …
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Intracellular delivery and voltage sensitivity of nanomaterials for the optical imaging of neuronal activity
… semiconductor quantum dots (QDs) and fluorescent nanodiamonds (NDs), has shown higher sensitivity to electrical fields than that of any previously reported probes, which may address the persistent challenge of robust optical voltage imaging. The fundamental issue for implementing voltage-sensitive …
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