Introduction

Objective

Background

What you will need

Procedure

Questions to Answer

Sample Results

Entire lab in .pdf format

Index of other experiments



Questions to Answer

The following qestions should be answered in the form of a report.

Introduction
What methods can be used to observe dislocations?
How is the dislocation density increased in a crystal?
What do you expect to happen during annealing?
Why do we use single crystals?

Procedure
How did you cleave the samples?
How do you bend the samples?
How were they etched?
How were they annealed?
What type of microscopy did you use?

Results
Your results section should include images of the cleaved surface before etching, after etching, and the annealed surface after etching.
What are the most apparent features?
Along which crystallographic directions were the features observed?
[Remember that all images must have scale bars]

Discussion
How does each process affect the dislocation density?
What is the dominant slip system in NaCl?
What is dislocation density along the boundaries?
What is the misorientation across the boundaries?