Lecture 18: Laue, Bragg, Ewald (Hammond Ch 8)
Students should be able to:
1. Understand that Laues construction is the condition for
constructive interference in 1, 2, or 3 dimensions
2. Draw Braggs l
Lecture 13: Crystal planes (Hammond Ch 5)
Students should be able to:
1. Determine directions in crystals
2. Determine planes in crystals
3. Understand that any set of planes permeates a crystal
4. Ca
Lecture 10: Symmetry in 2 dimensions
Students should be able to:
1. Followup: Use VESTA to visualize structures
2. Identify lattices, point groups, and plane groups
3. Identify symmetry elements: Appl
Lecture 12: Space groups (Hammond Ch 4)
Review informal early feedback
Students should be able to:
1. Perform the Voronoi construction
2. Understand 3D symmetry elements that lead to space groups
3. U
Lecture 9: Intro to crystal structures
Students should be able to:
1. Use VESTA to visualize structures and plot in informative ways
2. Explore bonding and coordination
3. Find crystal structures usin
Lecture 11: Symmetry in 3 dimensions
Students should be able to:
1. Identify 3D Bravais lattices and crystal systems
2. Recognize that a lattice can often be described by many unit cells
3. Perform th
Lecture 14: Reciprocal Space (Hammond Ch 6)
Students should be able to:
1. Find plane spacings in orthogonal axes
2. Understand the origins 1-D and 2-D reciprocal lattices
3. Understand that non-P lat
MSE 405: Microstructure Characterization
Midterm Exam, Spring 2014
Closed book. 63 points maximum
Name:
1. [15 points] Recall that peaks in scattered intensity are observed when waves
interfere constr
MSE 405: Microstructure Characterization
Name:
Midterm Exam, Spring 2015
Closed book. No graphing calculator. 4 page/5 question exam
1. [20 points] Cu crystallizes in the FCC structure and is used as
,
Geometric Optics
I[
LOOKING
AHEAD
Geometric optics ignores diffraction effects and
concentrates on the paths of light rays through
sys tems that contain plane or curved mirrors, lenses.
or other opt
Geometrical
Optics
5.1
INTRODUCTORY REMARKS
The surface of an object that is either self-luminous or exter
nally illuminated behaves as if it consisted of a very large
number of radiating point sour
Lecture 4: Optics Objectives
1. Understand generation of laser and X-ray light
2. Conceptually and quantitatively draw the diffraction patterns from
1. Many narrow slits
2. One wide aperture
3. Mixtur
Lecture 5: Optical Resolution Objectives
1. Make analogies between diffraction gratings & materials
2. Understand how to determine optical resolution with the Rayleigh
criterion
3. Find diffraction pa
MSE 405 Daily Problem Spring 2016
Monday, March 28
Reading: Hammond 8.1-8.4
Important concepts:
Condition for diffraction by Laue's Method
Condition for diffraction by Bragg's Method
Meaning of the Ew
Lecture 7: Bright- and Dark-field
Imaging
Imaging using a beam
and a detector
detector
Bright-field
transmitted
Scanning
beam using
coils or
deflectors
Annular dark field (ADF)
Techniques:
scanning op
Please sit by lab group (with partners!)
Fri
Thurs
Tues
Mon
Front of room
Door
Wed
(Posted on Compass)
The first X-ray diffraction of martian soil
Feldspar
Pyroxenes
Olivine
NASA/JPL-Caltech/Ames http
Lecture 6: Diffraction Imaging Objectives
1. Review scattering from narrow slits and apertures
2. Understand the formation of simple 2-D diffraction patterns
3. Understand the consequences of placing
MSE 405: Microstructure Characterization
Spring 2016, Daniel Shoemaker
Daily Problem
Via clicker: Monday, February 22
Read: Hammond, 2.1-2.5
We have established that materials form periodic arrangemen
MSE 405: Microstructure Characterization
Spring 2016, Daniel Shoemaker
Daily Problem
Via clickers: Wednesday, February 24
Read: Hammond, 3.1-3.4
There are many ways to choose unit cells for a given la
MSE 405 Daily Problem
Monday, Feb 29
Reading: Hammond 3.1-3.5 (from last class), Hammond 4.1-4.7
Important concepts:
Voronoi Polyhedra
Inversion Centers
Glide planes
Screw Axes
Space groups
Herman-Mau
MSE 405: Microstructure Characterization
Spring 2016, Daniel Shoemaker
SOLUTION
Homework 2 [40 points]
To be turned in at the start of lecture: Wednesday, February 24
Reading: Hammond Chapter 7, Chapt
MSE 405: Microstructure Characterization
Spring 2016, Daniel Shoemaker
Homework 2 [20 points]
To be turned in at the start of lecture: Wednesday, March 9
Reading: Hammond Chapter 2-5, Compass resource
Lecture 8: Simple crystals (Hammond Ch1)
Students should be able to:
1. Identify and draw simple structures: FCC, BCC, HCP
2. Quickly give coordinates for these structures
3. Calculate hard-sphere int
MSE 405: Microstructure Characterization
Spring 2016, Daniel Shoemaker
Homework 2 [20 points]
To be turned in at the start of lecture: Wednesday, March 9
Reading: Hammond Chapter 2-5, Compass resource