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Showing 1 to 20 of 62 for “"Grazing Incidence"”.
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Numerical study of Stokes' wave diffraction at grazing incidence
Thesis (Sc.D.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1980.
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Structural analysis of diblock copolymer nanotemplates using grazing incidence scattering
Die Aufgabenstellung dieser Arbeit ist zweigeteilt. Zum einen wurde eine lithographische Methode zur Herstellung von Nanotemplaten geordneter magnetischer Nanostrukturen auf großen Oberflächen (größer als 1x1 cm^2) untersucht. Zum anderen wurde eine strukturelle Analyse der erhaltenen Nanotemplate …
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Surface damage through grazing incidence ions investigated by scanning tunneling microscopy
Surface damage, caused by grazing incidence ions, is investigated with variable temperature scanning tunneling microscopy. The experiments are carried out on a Pt(111) crystal. The kinetic energy of noble gas ions is varied between 1-15 keV and the angle of incidence can be adjusted between 78.5° …
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Grazing Incidence X-ray Scattering from Magnetic Thin Films and Nanostructures
Grazing incidence scattering of synchrotron x-rays has been used to characterize the structure of magnetic thin films and periodic nanostructures. The combined metal and metal oxide films have been chosen to clarify the effects of growth processing techniques in technologically important magnetic …
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Determination of spectral sensitivity of a vacuum ultraviolet, grazing incidence spectrograph
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Physics, 1997, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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Optimizing The Performance Of As-manufactured Grazing Incidence X-ray Telescopes Using Mosaic Detector Arrays
… astronomy is only forty (43) years old, and grazing incidence X-ray telescopes have only been conceived and designed for a little over fifty (50) years. The Wolter Type I design is particularly well suited for stellar astronomical telescopes (very small field-of-view). The first orbiting …
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Reduction of Line Edge Roughness in Semiconductor Photoresist by Means of a Grazing Incidence Ion Beam
… such method employing the use of an ion beam at grazing incidence along the features. This method smooths relatively long spatial length LER, a potential advantage over other smoothing techniques that focus on just molecular scale LER. LER reduction numbers Variables include beam energy and …
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Pale black dot: a field trip to the multidimensional world of metal halide perovskites
… our structural characterisation capabilities at Grazing-Incidence Wide-Angle X-ray Scattering synchrotron facilities via a series of technical developments. We worked our way up from simple static measurements, to in situ lightsoaking and annealing studies, to finally achieve operando full device …
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Fusion-Product Transport in Axisymmetric Tokamaks: Losses and Thermalization
… a function of poloidal angle and local angle-of-incidence at the first wall. The flux is strongly peaked at near grazing incidence, suggesting that blistering-injected impurities can reduce reactor burn times by 50-70%. Non-prompt losses (during slowing down, without anomalous effects) are also …
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Self-assembly of silicon-containing triblock copolymer and terpolymers
… field theory (SCFT) modeling and in situ grazing-incidence small-angle X-ray scattering (GISAXS) measurement, the phase behavior of advanced polymer architectures can be revealed in details.
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Pattern formation and evolution on Pt(111) by grazing incident ion bombardment
… the amount of material which is removed during grazing incidence ion bombardment from a Pt(111) sample, it was possible to determine the different sputtering yields of ions impinging either on ascending step edges or hitting onto flat terraces. From the analysis of damage patterns of single ion …
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Soft x-ray near edge spectroscopy of cuprous oxide and silicon-germanium alloys
… the new extended range grasshopper (ERG) grazing incidence grating monochromator for use in the VUV and soft x-ray spectral ranges, are presented.
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Scattering from sub-critically insonified buried elastic shells
… shallow water environment a high frequency high grazing angle mine-hunting sonar approach is vastly limited by the coverage rate, making the detection and classification of buried objects using subcritical grazing incidence an attractive alternative. In mine countermeasurements (MCM) applications …
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Multiscale Modeling and Mechanistic Analysis of Crystallization and Particulate Processes
… of MOF thin films can be resolved with in situ grazing incidence wide-angle X-ray scattering (GIWAXS) coupled with mechanistic modeling; and that continuum-scale crystal size distribution and breakage behavior can be predicted using extent-based and analytical population balance formulations. …
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On Quantum Reflection and The Casimir Effect : Application to atom-surface scattering
… and from an atomically rough gold surface under grazing incidence. The data are interpreted in terms of the quantum reflection theory recently developed by Friedrich et al. The quantum reflection coefficient is measured at energies from microeV down to neV and increases by approximately 5 orders …
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Fabrication of extremely smooth blazed diffraction gratings
… order for x-rays to reflect effectively through grazing incidence reflection, the gratings will be coated with high atomic number materials, such as gold. Deposition of thin metal film often develops residual stress that adds out-of-plane distortion. In this thesis the out-of-plane distortions …
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Block copolymer self-assembly and templating strategies
… of self-assembly can be tracked in situ using Grazing Incidence Small Angle X-ray Scattering, and the annealed morphology can be revealed in 3D using TEM tomography. Moreover, non-bulk morphologies can be produced, the ordering of the microdomains can be improved and their locations directed …
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Auslegung und Charakterisierung eines Extrem-Ultraviolett-Transmissionsmikroskops
… a pulsed xenon gas discharge plasma source, a grazing incidence condenser, a Schwarzschild objective and a digital detector. The built up system allows exposure times from 100 ns up. With the EUV-microscope high-contrast and sharp images with lateral resolutions of about 600 nm were achieved, …
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Practical Pathways to Efficient MRAM: Spin-Orbit Torques, Low-Damping, and Anomalous Hall Conductivity in Polycrystalline Materials
… SOTs, instead finding direct evidence from grazing-incidence x-ray diffraction for a strain gradient. The next pathway investigated is an easy-to-grow, polycrystalline alternative to non-collinear antiferromagnets which require high temperature growth (>400°C). We find that sputter-grown …
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