你将学到什么
The structural difference between a glass and a crystal
How we describe the structure of amorphous materials
What is the structure of glasses and polymers
What all crystals have in common and how do we differentiate them
The principles of x-ray diffraction that allow us to probe the structure of crystals
课程概况
Structure – or the arrangement of materials’ internal components – determines virtually everything about a material: its properties, its potential applications, and its performance within those applications. This course is the first in a three-part series from MIT’s Department of Materials Science and Engineering that explores the structure of a wide variety of materials with current-day engineering applications. Taken together, these three courses provide similar content to MIT’s sophomore-level materials structure curriculum.
Part 1 begins with an introduction to amorphous materials. We explore glasses and polymers, learn about the factors that influence their structure, and learn how materials scientists measure and describe the structure of these materials. Then we begin a discussion of the crystalline state, exploring what it means for a material to be crystalline, how we describe periodic arrangement of atoms in a crystal, and how we can determine the structure of crystals through x-ray diffraction.
If you would like to explore the structure of materials further, we encourage you to enroll in Part 2 and Part 3 of the course.
Photo by User: Bill Burris on Flickr. (CC BY-SA) 2.0
课程大纲
Part 1: An Introduction to Materials Science
Structure of materials roadmap
States of matter and bonding
Part 2: Descriptors
Descriptors: concept and function
Free volume
Pair distribution function
Part 3: Glasses
Glass processing methods
Continuous network model
Network modifiers
Part 4: Polymers
Random walk model
Chain-to-chain end distance
Order and disorder in polymers
Part 5: An Introduction to the Crystalline State
Translational symmetry
The crystalline state in 2D
The crystalline state in 3D
Part 6: Real and Reciprocal Space
Miller indices
Real space
Reciprocal space
Part 7: X-Ray Diffraction
Bragg’s Law
Diffraction examples
预备知识
University-level intro to chemistry
Basic linear algebra