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 180 for “"Scanning electron microscope (SEM)"”.
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Pathological Changes and Immunity Associated With Experimental Eimeria Vermiformis Infections in the Mouse (Mus Musculus)
… Surface changes in ileum were studied with the scanning electron microscope (SEM). Immunity to E. vermiformis was determined 30 and 105 DAI. Cross-immunity to E. ferrisi was also studied. An additional meront generation, discovered during the study, was described.
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Transparent Platinum Counter Electrode for Building Integrated Dye-sensitized Solar Cells
… with indium tin oxide/glass substrate. Scanning electron microscope (SEM) and atomic force microscope (AFM) images showed a large surface area for the nanoporous Pt nanoclusters. DSSCs with Pt-NP counter electrode had 6.17% power conversion efficiency, comparable to the 6.46% efficiency …
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A prediction of polymer wear using polymer mechanical properties and surface characterization parameters
… of the wear process were made in the scanning electron microscope (SEM) both before, during, and after the wear experiment. It was observed that these polymers along with Nylon 6-6 tend to wear in discrete sites rather than continuous films. At these discrete sites the polymer shears …
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A study of chemical interactions between the Marcellus shale and attapulgite and bentonite clays
… from two wells in West Virginia were analyzed. A Scanning Electron Microscope (SEM) was used to observe the surface of each sample, and an INCA X-Ray Microanalysis System (EDX) provided a quantitative chemical composition analysis of the samples as well. There is large mineralogical variability …
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Fabrication and Magnetic Property Investigation of Metallic Nanowire Arrays
… deposition procedures were described in detail. Scanning electron microscope (SEM) performed all sample characterization. Vibrating sample magnetometer (VSM) and ferromagnetic resonance (FMR) were utilized to investigate the magnetic properties of single Ni nanowire arrays of different lengths …
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SECONDARY ELECTRON SPECTROSCOPY INSIDE THE SCANNING ELECTRON MICROSCOPE AND ITS MATERIAL SCIENCE APPLICATIONS
The scanning electron microscope (SEM) is a powerful high resolution imaging instrument used in multiple fields of study today. The low energy scattered electrons inside it, used mainly for topographic image of a sample’s surface, contain valuable information in the emitted energy spectrum. In this …
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The effects of freezing on the material properties and structure of bovine medial meniscus.
… and tissue permeability (λ) were calculated. A scanning electron microscope (SEM) was used to view the structure.
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Quantitative Fracture Strength of Lithiated Tin Oxide Nanowires by In-Situ SEM Tensile Experiments
… oxide (SnO2) nanowires was gathered from in situ scanning electron microscope (SEM) mechanical tests using a micro electromechanical system (MEMS) uniaxial tensile testing device. Stress values were calculated from load and displacement data from an inSEM nanoindenter tip while strain values were …
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Fabrication of hydroxyapatite-biodegradable polymer scaffolds by electrospinning for potential bone tissue application
… mats obtained follow characterization using scanning electron microscope (SEM) - Energy Dispersive X-ray Analysis (EDXA), Thermogravimetric Analysis (TGA), and X-ray Diffraction (XRD). In this study, hydroxyapatite (HA) particles were successfully incorporated into the three dimensional …
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Hydrogen storage in pt/carbon nanotube sheets
Three types of self-assembled carbon nanotube (CNT) sheets, for example, carboxylic functionalized multi-walled CNTs (MWNTs-COOH), pure multi-walled CNTs (MWNTs), and pure single-walled CNTs (SWNTs), were prepared as substrates by ambient environment vacuum filtration of suspensions of the …
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Polymerized ionic liquids by condensation polymerization: Stimuli responsive polyurethane gels and dispersions
… and are found to be porous when analyzed by scanning electron microscope (SEM). PIL based resins are also made in two steps, that show self-dispersion properties in water forming thermodynamically stable nano-scale particles. These materials can be transported as 100% solid resins, where they …
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Thermomechanical property evaluation of molybdenum alloys
… was polished suitable to examine them using Scanning Electron Microscope (SEM) and Energy Dispersive Spectroscopy (EDS) and the micro cracks were detected, which were developed due to the thermal stresses.
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Soy protein-poly (l-lactic acid) blend nanofibers for drug delivery of nardostachys jatamansi
… developed, were morphologically analyzed using Scanning Electron Microscope (SEM) and also for the presence of the drug co ntent with UV spectrometry. This research has opened a new avenue for the drug delivery of Nardostachys jatamansi using nanofibers. However, there are more opportunities to …
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Utilizing Nanoporous Alumina Membranes for Molecular Transport and Silica Nanotube Synthesis
… of the membrane were studied using a scanning electron microscope (SEM) and an atomic force microscope (AFM). Infrared spectroscopy was used to confirm the presence of silane coupling with the alumina membrane. Silanes with variable functional groups, either hydrophobic (isobutyl …
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Low ion dose imaging in the Helium Ion Microscope under Neyman Type A statistics
The Helium Ion Microscope (HIM) is a new tool capable of imaging at resolutions not possible in the ubiquitous Scanning Electron Microscope (SEM). However, along with this improvement in imaging, the helium ions used in HIM cause greater damage to samples. Reducing ion doses decreases the amount of …
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The Trapped Charge Interfacial Modulation of the Electron Beam Induced Current in Metal Oxide Semiconductor Capacitors
… silicon and were placed in the focal plane of a scanning electron microscope (SEM) to selectively populate and generate the oxide traps. As the electron beam scans from a region of the MOSC in the WRITE state to a region in the ERASE state, the electron beam induced current (EBIC) exhibits an …
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ADDITIVE MANUFACTURING OF SUPERHYDROPHOBIC STAINLESS STEEL COMPOSITES
… imaging of the powder and solid coupons in a scanning electron microscope (SEM), powder x-ray diffraction (XRD), and optical profilometry. Although the composites were successfully mixed and printed, it was found that the surfaces remained hydrophilic due to the macroscopic nature of the …
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Investigation into coatings produced from nanoparticle blended feedstock for rotating equipment repair applications
… of the workpieces are examined using the Scanning Electron Microscope (SEM), Optical Microscope, Energy Dispersive Spectroscopy (EDS), X-ray Diffraction (XRD). The indentation tests are carried out to assess the microhardness variation across the coatings. In the case of coatings produced …
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Effect of Amines as Corrosion Inhibitors for a Low Carbon Steel in Power Industry
… 12 hours. Morphology studies were carried using scanning electron microscope (SEM), phase analysis was done utilizing Fourier transform infrared spectroscopy (FTIR), and weight loss was performed to assess kinetics of oxidation. Control samples showed the highest metal dissolution rate. DBU …
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Understanding frequency response of a flexural complaint stage for use in oscillatory orthogonal cutting
… slices for subsequent imaging using a scanning electron microscope (SEM). Ultramicrotomes, devices that employ this process, have incorporated oscillations into this process to reduce the damage done on each slice. Extensive research has been made in trying to identify the appropriate …
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