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 3330 for “"Diffraction"”.
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Structure Solution Using Precession Electron Diffraction and Diffraction Tomography
This thesis concerns the application of electron diffraction to the problem of structure solution. The technique of precession electron diffraction, in particular, is discussed as a method to improve the applicability of methods borrowed from X-ray crystallography to intensities measured from …
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Conical Diffraction Photonics
Recent interest in conical diffraction (CD) has led to a large increase in experimental and theoretical investigations over the last two decades, a marked change from the previous 160 quiet years in the field. Once dismissed as an optical curiosity, the phenomenon has emerged as a fascinating area …
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Diffraction Between the Spots: Scanning Electron Diffraction of Beam-sensitive Disordered Materials
… distributions. Much of this can be gleaned from diffraction spots, but even more of the information lies in-between the spots in a diffraction pattern. The diffracted intensity outside of the diffracted spots contains the necessary information to not only obtain structural information, but to …
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Diffraction spectroscopy of metalloproteins
… atomic form factors are carried over to the diffraction intensities. The atomic form factors are sensitive not only to the the energy of the X-ray but also the diffraction criteria; providing individual local physical data at different ratios in various diffractions. This process is referred …
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Coherent X -Ray Diffraction
… from the kinematical formulation for x-ray diffraction and from the temporal and spatial coherence of radiation. The antiphase domain structure of Cu 3Au is described, along with the associated reciprocal-space structure which is measured by CXD. CXD measurements place relatively stringent …
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Coherent x-ray diffraction
Submitted by Meng Tao (mengtao2@illinois.edu) on 2012-10-26T22:51:05Z No. of bitstreams: 1 pitney_John.pdf: 12626202 bytes, checksum: 0a4edb5141b145027d659f789e1e8679 (MD5)
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Grazing angle neutron diffraction
… implementation of grazing-angle neutron diffraction as a new method of non-destructive surface and interface analysis. Diffraction in the grazing-angle geometry with x rays and neutrons possesses two unique advantages over specifically surface-sensitive methods for structure …
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A neutron diffraction spectrometer
… in this thesis. A relation between angle of diffraction and neutron energy is obtained from the known lattice spacing of the copper crystal. A measure of the total cross section of cadmium from 0.01 to 1.0 ev has been obtained from transmission data for a thin cadmium sheet. The position of …
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Evaluation of the uniform theory of diffraction for edge diffraction at low frequency
This thesis examines the UTD diffraction coefficient's limitations in accuracy for a half plane and a wedge at low frequency. The UTD solutions are developed for scattering by a strip and a square cylinder with diffraction considered as a local phenomenon. Single and multiple diffractions are …
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Voltage programmable diffraction grating device
… of oil. This wrinkle is used as a variable diffraction grating that changes the wrinkle amplitude in proportion to the applied voltage squared. The device consists of a thin layer (between 8 μm and 50 μm) of 1-Decanol oil which coats a 0.5 μm thick layer of dielectric (SU8 photoresist) that …
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Three-dimensional acousto-optic diffraction
Not Available
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Strain measurement using neutron diffraction
… of strain measurement technique using neutron diffraction. A dedicated neutron strain scanner - ENGIN, funded by Ee. has been developed at ISIS. It has two radial collimators, allowing for the first time, measurements taken simultaneously at two orthogonal directions; uses Pawley refinement …
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Diffraction in electron-proton collisions
Subject of this thesis is diffractive collisions of electrons and protons, i.e. collisions wher~ the proton remains intact or is slightly excited, and loses only a small fraction of its initial energy. Such processes can be described by the exchange of a pomeron, which is well-known from the …
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X -Ray Diffraction Rotational Microrheology
… single particle tracking. The technique of X-ray diffraction rotational tracking has the ability to track the rotational motion of single crystals to a resolution of 80murad with a time resolution of 0.02 seconds. Rotational microrheology studies of single crystal Alumina tracer particles …
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Chip-scale diffraction phase microscopy
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-05-01
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Extremal effects in rotationally inelastic diffraction
… rotational inelastic processes which accompany diffraction of RD. Singularities in the scattering amplitude for the rotationally inelastic events have been found to significantly effect the scattered distributions. This effect, extremal scattering, has been explained in terms of a simple …
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Particle displacement measurement using optical diffraction
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002.
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