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Electron Diffraction and Imaging

Electron Diffraction and Imaging. Instructor: Prof. Sundararaman M, Department of Metallurgical and Materials Engineering, IIT Madras. This course discusses topics in electron diffraction and imaging: Crystal structure, Symmetry, Reciprocal space, Different type of projections (polar and stereographic), Electron microscope (Properties of waves, Wave nature of electron, de Broglie equation, electron optics, lens and lens defects, Components-source to detector), Fundamentals of diffraction, Computation of intensity of diffraction patterns, Different types of diffraction (Selected area, Kikuchi, Convergent Beam and nano-diffraction), Contrast theory (Kinematical and dynamical theory), Imaging of different types of defects (zero, one, two and three dimensional defects), Phase contrast microscopy, Basics of electron crystallography (combining diffraction and High resolution transmission electron microscopy), Brief Introduction to recent techniques in electron microscopy (Holography, Scanning TEM, Z- contrast microscopy, Orientation Microscopy, etc). (from nptel.ac.in)

Lecture 02 - Stereographic Projection


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Lecture 01 - 1D, 2D, 3D Lattice
Lecture 02 - Stereographic Projection
Lecture 03 - Stereographic Projection (cont.)
Lecture 04 - Symmetry in 1D Crystals
Lecture 05 - Symmetry in 2D Crystals
Lecture 06 - Symmetry in 3D Crystals
Lecture 07 - Understanding IUCr Tables
Lecture 08 - Symmetry in 3D Crystals
Lecture 09 - Reciprocal Lattice
Tutorial 01 - Directions Planes and Zone Axes
Tutorial 02 - Interplanar Distances and Angles
Lecture 10 - Diffraction
Lecture 11 - Diffraction (cont.)
Lecture 12 - Diffraction: Structure and Shape Factor
Tutorial 03 - Transformation of Indices
Lecture 13 - Microscope
Lecture 14 - Microscope (cont.)
Lecture 15 - Kikuchi Diffraction
Lecture 16 - Double Diffraction and CBED (Convergent-Beam Electron Diffraction)
Lecture 17 - CBED and Precession Electron Diffraction
Lecture 18 - Indexing Diffraction Pattern
Tutorial 04 - Correlation of Diffraction Spots to Microstructure
Tutorial 05 - 3-Index to 4-Index System
Lecture 19 - Kinematical and Dynamical Theory of Diffraction and Imaging
Lecture 20 - Contrast from Planar Defects
Lecture 21 - Contrast from Strain Fields
Lecture 22 - Atomic Scattering Factor
Lecture 23 - Coherence
Lecture 24 - Lens Aberrations
Lecture 25 - Phase Contrast Microscopy
Lecture 26 - Phase Contrast Microscopy (cont.)
Lecture 27 - Phase Contrast Microscopy (cont.)
Lecture 28 - STEM (Scanning Transmission Electron Microscope)
Lecture 29 - Electron Energy Loss Spectroscopy and Energy-Dispersive Spectroscopy
Lecture 30 - Electron Tomography, Lorentz Microscopy, Off-axis Electron Holography
Lecture 31 - Energy-Dispersive Spectroscopy
Lecture 32 - Revision
Lecture 33 - Revision (cont.)
Lecture 34 - Revision of Recent Trends in Microscopy
Lecture 35 - Crystallography Revision