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 13 of 13 for “"FIB-SEM"”.
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Multi-Microscopy Characterisation of III-Nitride Devices and Materials
… focussed ion beam/scanning electron microscope (FIB/SEM) in bridging the gap between these two types of techniques and providing a platform on which to perform correlative studies between the optical and structural properties of III-nitride materials. The heteroepitaxial growth of III-nitrides …
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Multiscale computational simulation of multidimensional chemically reacting flow over washcoated heterogeneous catalysts
… decrease in accuracy. Data collected from FIB-SEM imaging provided nanoscale phase information for actual, commercial washcoat structures. Algorithms were developed to process, filter, and discriminate phase information in the FIB-SEM images to facilitate 3D reconstruction. Reconstructed …
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Templated Multiferroic Nanocomposites by Ion-Lithography
… Second, ion-lithography enabled by the VELION FIB-SEM system is developed to template the perovskite—spinel system. Specifically, fin-shaped BFO—CFO nanocomposite is synthesized by pulsed laser deposition (PLD). Nucleation mechanism of CFO on patterned STO substrates together with atomic …
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Deposition and Characterization of Ceramic Thin Films and a New Experimental Approach to Evaluate the Mechanical Integrity of Film/Substrate Interfacial Layers
… instrumented nanoindentation, focus ion beam (FIB) scanning electron microscope (FIB SEM), and transmission electron microscope (TEM). The effective interfacial shear strength between TiN and CrN thin films and their substrates was evaluated through a substrate- tension method and a newly …
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A study into the properties and applications of bacterial microcompartments and polyphosphate metabolism
… the use of imaging instruments such as the FIB-SEM, and microcompartment extraction from cells. These technical developments enabled additional observations regarding the characteristics of microcompartments and provided novel information.
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Analyzing Ultrastructural characteristics of Post-synaptic targets of pre-identified Presynaptic Boutons in layer 3 and layer 4 of the Ferret Primary Visual cortex
… ion beam and scanning electron microscopy (FIB/SEM) to acquire and then analyze images of layer 3 and upper and lower layer 4 of the ferret primary visual cortex. In both layers there were more excitatory synapses on dendritic spines than on dendritic shafts. Presynaptic bouton volumes were …
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3D Nanoscale Architecture and Physiology of the Human Airway Epithelium
… Focused Ion Beam-Scanning Electron Microscopy (FIB-SEM), which reveals extensive remodelling of cellular topology, organelle distribution, cytoskeletal arrangement, and basal body maturation during multiciliogenesis. Furthermore, observations of organelle remodelling were accompanied by …
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Capturing irradiation-enhanced corrosion of zircaloy-4 with a charge-based diffusion/drift phase field model
… a focused ion beam/scanning electron microscope (FIB/SEM) to obtain oxide thickness measurements with greater temporal resolution than is widely provided by autoclave testing. Oxide thickness data was used to determine the thermal dependence of oxygen diffusivity in the oxide within HOGNOSE. …
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Grain-Boundary Parameters Controlled Allotriomorphic Phase Transformations in Beta-Processed Titanium Alloys
… a combination of dual beam focused ion beam (FIB), SEM and electron back-scattered diffraction (EBSD) methods. Both these approaches considerably simplify the problem because of a relatively easier experimental set-up and a versatile methodology. The crystallographic variant selection and …
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Tomographic reconstruction and sub-surface imaging of porous nitride semiconductors
… structural characterisation of porous nitride semiconductors and apply those methods to further our understanding of these materials. I investigated nanostructured nitrides through porous GaN distributed Bragg reflectors (DBRs), highly-reflective and wavelength-selective mirrors for …
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Investigating the cytoskeleton and microtubule-based transport with in situ cryo-electron tomography
… I next employed cryo-focused ion beam (cryo-FIB) milling to thick rodent hippocampal neurites. This was to 1) target cellular regions with more motor-driven transport and 2) to remove unnecessary cellular noise in attempt to improve tomogram SNR. I found that, even with sample optimisation, …
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Surface plasmons for enhanced metal-semiconductor-metal photodetectors
… traps it inside the subsurface region of semiconductor substrates. Among all photodetectors, the Metal-Semiconductor-Metal photodetector (MSM-PD) is the simplest structure. Moreover, due to the lateral geometry of the MSM-PDs, the capacitance of an MSM-PD is much lower than capacitances of …
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The effect of radiation damage by fission fragments on the structural stability and dissolution of the UO2 fuel matrix
… were studied using scanning electron microscopy (SEM), focused ion beam (FIB), atomic force microscopy (AFM), energy dispersive X-ray (EDX) spectroscopy, electron probe microanalysis (EPMA), X-ray diffraction (XRD), electron backscatter diffraction (EBSD), secondary ion mass spectrometry (SIMS) …