PPT-Electron Diffraction experiment

WaveParticle Duality Up until now when you have met waves and particles you will have treated them as separate entities However you will soon find that particles exhibit wave like behaviour and vice versa This experiment will illustrate this . Giovanni Luca Cascarano. CNR- Istituto di Cristallografia – Bari - Italy. To solve a crystal structure, i.e. to obtain the atomic coordinates, different methods are available. . We’ll focus our attention on Direct Methods, very popular and effective, able to give in a short time and in automatic way the solution to our problem: to compute the phases lost during the diffraction experiment (the so called . “The most incomprehensible thing about the world is that it is comprehensible.”. – . Albert Einstein. Day. 18, 3/31:. . Questions? . Electron Diffraction. Wave packets and uncertainty. Next Week:. Physics 2415 Lecture 38. Michael Fowler, . UVa. Today’s Topics. Multi-slit interference. The diffraction grating: spectra. Waves and particles, more diffraction. Radio . astronomy. Light Intensity Pattern from Two Slits. g Basic Crystallography g Why Use Diffraction in the TEM? g Bragg’s Law g Selected Area Electron Diffraction 1 2 Crystal Structure  A crystal structure is defined as a regular arrang August. . 18. th. , . 201. 5. Carnegie Mellon University, Pittsburgh. MURI Meeting, 2015. Saransh Singh. Marc . De Graef. 2. Outline. Introduction to . Forward Models in Electron . Scattering. Electron . By Cade Grigsby. 1. What can X-ray diffraction tell us?. Structure. Bonds. Length. Type. Arrangement. Geometry of crystal. Picture. Electron density map. Diffraction. Angle. Intensity. 2. From X-Rays to Structure. Martin Centurion. Department of Physics and Astronomy. University of Nebraska – Lincoln. 1. Outline. 2. Diffraction from aligned molecules:. 3D molecular images with sub-Angstrom resolution. Imaging of transient structures: Molecules in intense laser fields.. Derek A. Wann. University of Edinburgh. Workshop on Ultrafast Electron Sources. UCLA. 14. th. December . 2012. . Acknowledgements. Funding:. Stuart . Young. Matthew. Robinson. Paul. Lane. Overview. Rozario. , Rob . Shalloo. , John Wood. ATF User Meeting. 14-. 1. 1-. 201. 8. 1. Z. Najmudin. Scientific Case. 2. Cole, J. M. et al. Proc. Natl. Acad. Sci.. , . 2018/06/04/1802314115. Kneip. , S. . et al.. Introduction to transmission electron microscopy. Tutor: Peter Harris. The aims of this course are:. ● . to . describe the components of the transmission electron microscope (TEM). ● . to explain the origin of contrast in TEM images. Resolution of SEMTransmissionelectronmicroscopy(TEM)isamicroscopytechniquewherebyabeamofelectronsistransmittedthroughanultrathinspecimen,interactingwiththespecimenasitpassesthrough.Animageisformedfrom Part I:. The microscope. Sample preparation. Imaging/Contrast. Part II:. Diffraction. Defects. Part III. Spectroscopy. . MENA 3100: . TEM. Electron . gun. Condenser. . aperture. Sample holder. Objective. Michael Fowler, . UVa. Today’s Topics. Multi-slit interference. The diffraction grating: spectra. Waves and particles, more diffraction. Radio astronomy. Light Intensity Pattern from Two Slits. We have two equal-strength rays, phase shifted by. Philospher’s. Stone of Electron Crystallography?. Focus. Many methods exist for obtaining diffraction information. Selected Area. Nanodiffraction. and variants. CBED. All are complicated to interpret.