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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 153 for “"FIB"”.
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Quantitative Messung von Dotiergebieten in FIB-präparierten Silizium-Halbleiterbauelementen mittels Elektronenholographie
… mit dem fokussierten Ionenstrahl („FIB“), da keine andere Methode vergleichbar effizient arbeitet. Leider wird bei dieser Art von Präparation die Probe von der Oberfläche bis in eine gewisse Tiefe sowohl strukturell als auch elektrisch verändert. Diese Artefakte beeinflussen das …
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The use of ionic liquid ion sources (ILIS) in FIB applications
… as preliminary results of their performance in a FIB column.
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Mechanisms of focused ion beam (FIB) material removal and rearrangement at high beam flux
Focused ion beam (FIB) is widely used as a material removal tool for applications ranging from electron microscope sample preparation to nanopore processing for DNA sequencing. Despite the wide spread use of FIB, the basic material removal mechanisms are not well understood and may depend upon FIB …
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A Nano-Scale Chemical and Structural Characterization of Chinook Salmon (Oncorhynchus tshawytscha) Otoliths Using a FIB and HRTEM
We used a focused ion beam (FIB) to create thin sections from the post-hatch and core regions of Chinook salmon (Oncorhynchus tshawytscha) otoliths. The nano-scale chemistry and structure of these regions was characterized in thin section using scanning electron microscopy (SEM) in conjunction with …
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Characterization of ionic liquid ion sources for focused ion beam applications
In the Focused Ion Beam (FIB) technique, a beam of ions is reduced to nanometer dimensions using dedicated optics and directed to a substrate for patterning. This technique is widely used in micro- and nanofabrication for etching, material deposition, microscopy, and chemical surface analysis. …
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Biofilms as sources of fecal bacteria contamination in the stormwater drainage system in Singapore
… as reservoirs for fecal indicator bacteria (FIB), FIB concentrations were measured over time within biofilms and stormwater, and relationships between FIB in biofilms and FIB in stormwater were examined. The concentrations of three bacterial groups (total coliform, Escherichia coli, and …
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Nanofabrication using focused ion beam
Focused ion beam (FIB) technique uses a focused beam of ions to scan the surface of a specimen, analogous to the way scanning electron microscope (SEM) utilizes electrons. Recent developments in the FIB technology have led to beam spot size below 10 nm, which makes FIB suitable for nanofabrication. …
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Three Quaternary Catchments in Vhembe District Municipality: A GIS Approach
… and distribution of faecal indicator bacteria (FIB) in surface and groundwater sources across wet and dry seasons and to examine the impact of land use on FIB levels. Using GIS, we analyzed FIB concentrations in rivers and boreholes. The study found higher FIB levels during the wet season due to …
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Focused Ion Beam Created Refractive and Diffractive Lens Techniques for the Improvement of Optical Imaging through Silicon
… (Si) mit einer fokussierten Ionenstrahlanlage (FIB). SILs werden zur optischen Auflösungsoptimierung benötigt, wenn aktive Gebiete nur durch die Rückseite des Chips untersucht werden können. Kommerzielle SIL-Objektive lassen sich, z.B. bei engen Gehäuseöffnungen, nur eingeschränkt nutzen. …
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Improving microbial fate and transport modeling to support TMDL development in an urban watershed
… by elevated levels of fecal indicator bacteria (FIB), remains the leading cause of surface water-quality impairments in the United States. Continuous watershed-scale models are typically employed to facilitate Total Maximum Daily Load (TMDL) restoration efforts. Due to limited understanding of …
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A Comparative Microbial Composition Assessment of Stormwater, Urban Runoff and Wastewater
… for assessment of fecal indicator bacteria (FIB) in urban runoff (n = 96), stormwater (n = 8), and wastewater (n = 16). We quantified the densities and reductions of E. coli and Enterococcus, in raw stormwater, treated urban off from the Santa Monica Urban Runoff Recycling Facility (SMURRF) …
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Role of simple biomarkers in predicting fibrosis progression in HCV infection
Hepatic fibrosis biomarkers have been found to be variably accurate in the estimation of fibrosis in chronic Hepatitis C hepatitis (HCV). There is little information whether they are useful longitudinal predictors of changes of fibrosis stage; i.e., progression of fibrosis to cirrhosis. The aim of …
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Numerical Modelling of Steel Fibre Reinforced Concrete Subjected to Fatigue Loading
… of cracks when under tensile stresses. Steel Fibre Reinforced Concrete (SFRC) improves post-cracking behaviour through enhanced tensile strength, toughness, and crack control, offering increased resistance to fatigue damage. Despite extensive experimental research on SFRC, the fatigue …
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Growth of anodic alumina nanopores and titania nanotubes and their applications
… In this dissertation, focused ion beam (FIB) is used to create pre-patterned concaves to guide the anodization. Due to the advantage of FIB lithography, highly ordered AAO arrays with different arrangements, alternating diameters, and periodic pore densities are successfully achieved. …
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Detecção de vírus entéricos de transmissão hídrica e alimentar em ambientes costeiros recreacionais e de cultivo de moluscos bivalves de Niterói, Rio de Janeiro
… quantificação de bactérias indicadoras fecais (FIB). No entanto, estudos demonstram ausência de correlação entre FIB e risco de transmissão de patógenos virais, a não especificidade de hospedeiro das FIB e a consequente necessidade de utilização de indicadores espécie-específicos, como os …
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Bacterial and Sediment Transport in an Artificial Sand Bed Stream During Unsteady Flow
… increase in the fecal indicator bacteria (FIB) concentrations in stream water. Causes for this concentration increase include FIB-laden stormwater runoff and the release of bacteria from stream-bottom sediments. Studies were carried out to quantify this second cause of water quality …
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A risk analysis methodology for micro/nano manufacturing
… is applied to two applications: (1) the FIB sputtering process control, and (2) a flip chip design. Three different FIB processes using different ion sources were investigated in order to evaluate their process performance with respects to different process parameter uncertainties. A …
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Individual Carbon Nanotube Probes And Field Emitters Fabrication And T
… easier said than done. In our laboratory, carbon fibers with nanotube cores have been synthesized with conventional chemical vapor deposition (CVD) method. The single multiwall carbon nanotube (MWNT) sticks out as a tip of the carbon fiber. In order to pick up the individual CNT tips, focused ion …
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