MS2041_01 Introduction to crystal structures and diffraction theory 結晶繞射概論 MSE, National Tsing Hua University Fall semester 9/2015-1/2016 Instructor: Prof. Cho-Jen Tsai Office hours: By appointment (TEL: or Time: W3W4F3F4 Classroom: 台達 B105

Teaching Assistants: 黃心楷黃心楷、陳凱婷陳凱婷 李廷勳李廷勳、黃鈺家黃鈺家 Grading: problem sets (25%) two midterms (25% per each) one final (25%) take attendance (5 times for 5 extra points*) *: will be effective only when your grade is below 60 points The newest PPT files for lectures as well as the homework will be sent to your before the class! You can also download the old file from

Main References: Lecture notes of Prof. Huang Powerpoint: B.D. Cullity, “Elements of X-ray Diffraction”, Prentice Hall Other References: C. Hammond, “The Basics of Crystallography and Diffraction”, Oxford, Eugene Hecht “Optics”(Chapter 10) John M. Cowley, “Diffraction Physics” (Chapter 2) Ronald N. Bracewell, “The Fourier Transform and Its Applications”. (Chapter 2) MIT open course 3.60 (First quarter)MIT open course 3.60 (First quarter) (Graduate level)

Outline 1. Brief introduction 2. Crystal structure (1D, 2D, 3D) 3. Crystal symmetry (point group, space group) 4. Fraunhofer diffraction from slits 5. Fourier transform 6. Reciprocal lattice 7. Bragg’s law 8. Kinematic theory of diffraction 9. X-ray diffraction 10. Low energy electron diffraction (LEED) 11. Reflection high energy electron diffraction (RHEED) 12. Electron diffraction in TEM

Weeks #DateLectures Problem sets 1 09/16 Brief introduction + Crystal structure 09/18Crystal structure 2 09/23 Crystal structure: stereographic projection 09/25 Crystal symmetry: symmetry element #1 3 09/30Crystal symmetry: Bravais lattice 10/02Crystal symmetry: point group 4 10/07point group#2 10/09 國慶日補假 5 10/14point group + space group 10/16Crystal symmetry: space group #3 6 10/21Crystal symmetry: space group 10/23Crystal symmetry: space group

Weeks #DateLectures Problem sets 7 10/28Slit 10/30Midterm #1 8 11/4Slit+solution to Midterm#1 #4 11/6Fourier transform 9 11/11 Fourier transform + Reciprocal lattice #5 11/13 Reciprocal lattice + Bragg’s diffraction 10 11/18 全校運動大會停課 11/20Kinematic theory# /25Kinematic theory 11/27Midterm # /2 Kinematic theory+ solution to Midterm#2 12/4Shape effect#7

Weeks #DateLectures Problem sets 13 12/9Laue pattern 12/11Diffractometer 14 12/16Powder method#8 12/18LEED 15 12/23LEED 12/25RHEED#9 ? 16 12/30TEM 1/1 開國紀念日 17 1/6Final remark 1/8Final Exam