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Interaction between electrons and crystal, wavefunction calculation - multislice procedure and Blochwave, theory of imaging in electron microscope, contrast transfer function, image simulation and interpretation of images with atom resolution - software EMS, experimental conditions of image acquiring with atom resolution.
Last update: T_KFK (17.04.2002)
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Úspěšné složení ústní zkoušky. Last update: Cieslar Miroslav, doc. RNDr., CSc. (14.05.2019)
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1. KARLÍK, M. (2001) Lattice imaging in transmission electron microscopy, Materials Structure, 8, 2001, 3-15. 2. WILLIAMS D.B., CARTER C.B. Transmission Electron Microscopy, Plenum Press, New York, 1996. 3. REIMER, L., Transmission Electron Microscopy, Springer-Verlag, 1989. 4. STADELMANN, P. A., EMS - A software package for electron diffraction analysis and HREM image simulation in materials science, Ultramicroscopy 21, 1987, 131-146. Last update: T_KFK (17.03.2004)
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Otázky ke zkoušce se shodují se zněním sylabu. Last update: Cieslar Miroslav, doc. RNDr., CSc. (14.05.2019)
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1) Electron-crystal interactions Schrödinger equation and crystal potential, low angle scattering approximation, projected potential approximation, wavefunction calculation 2) Contrast transfer Impulse response and transfer function, scalar theory of diffraction - Fresnel and Fraunhofer approximation, real electron lenses and their aberrations, partial coherency of the electron beam 3) Interpretation of micrographs - simulations Software EMS : construction of a crystal model, phase object function, Fresnel propagator, image and contrast transfer, PostScript output 4) Practical conditions of HREM Crystal orientation and thickness, astigmatism and coma-free correction, size of the objective aperture 5) Sample preparation Electrolytical polishing, ion polishing, cleavage, electrochemical deposition, sputtering, evaporation,
Literature : KARLÍK, M. (2001) Lattice imaging in transmission electron microscopy, Materials Structure, 8, 2001, 3-15. WILLIAMS D.B., CARTER C.B. Transmission Electron Microscopy, Plenum Press, New York, 1996. REIMER, L., Transmission Electron Microscopy, Springer-Verlag, 1989. STADELMANN, P. A., EMS - A software package for electron diffraction analysis and HREM image simulation in materials science, Ultramicroscopy 21, 1987, 131-146. Last update: T_KFK (17.04.2002)
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