Materials Science and Engineering : Crystallography

Name: Materials Science and Engineering : Crystallography
Rating: 4.4 (62 reviews)

An Introduction to Materials Science .. Discussing Crystal structure ,2D&3D Lattices and Unit cells ,Symmetry in 2D&3D

Created byMohamed Fathi

Last updated 10/2019

English

English [Auto],

What you'll learn

Crystallography Basics for Chemistry and Engineering studies
Basics of Atomic structure of crystalline solids
Crystal systems and Lattices in Detail 2D & 3D
Symmetry in 2d & 3D

Course content

2 sections • 31 lectures • 4h 47m total length

1-Intro I9:36
Introduction to the course ,
Please have a look at the Resources before purchasing the course . It is an open source course by prof. Rajesh Prasad .
You might find what you were looking for in them and not have to buy the course .
But of course the style of teaching is completely different in this course , in addition to using new tools of illustration here , Like AUTOCAD .
I hope you will find what you hoped for in this course .

**NOTE :
You might need to speed up the videos a little bit ,as I am talking somewhat slowly .

Best wishes and Happy Learning ! .
2-Intro II12:56
Explore the microscopic crystal structure, distinguishing crystalline and amorphous solids, with domains and grains that govern optical and mechanical properties, and introduce x-ray diffraction as a tool.
3-Lattice I12:48
Explore how identical spheres can fill space with translational symmetry, defining a lattice and distinguishing true lattices from non-lattice arrangements through the concept of identical environments.
4-Lattice II18:52
Explore lattices and lattice points, define translation vectors and translational symmetry, and distinguish crystals from lattices across 1d, 2d, and 3d.
5-1-Crystal VS Lattice13:18
Distinguish crystals from lattices by framing crystals as a lattice with a basis or motive, where the lattice provides repeating positions and the basis defines the atoms.
5-2-Crystal VS Lattice II11:04
Explain crystal and lattice with the same fcc lattice but different motives, using gold and diamond as examples, then define unit cell and motive for repeating structures.
6-1-Unit Cell I - Intro15:27
Understand how translation symmetry builds a lattice from a unit cell, using basis vectors a and b and the angle alpha to generate the whole lattice.
6-2-Unit Cell II - Uniqueness9:42
Uncover how a unit cell generates a lattice by translations with no overlap, allowing various shapes, with the convention that 2d units are parallelograms and 3d units are parallelepipeds.
6-3-Unit Cell III - choice criteria9:39
Identify and compare primitive and non-primitive unit cells, prioritizing symmetry as the primary criterion, then consider size and convention to classify lattices and define lattice parameters.
6-4-Unit Cell III -3D5:43
Explore 3D lattice concepts, translational symmetry, and unit cells, including seven lattice parameters and the angles between axes, and understand why physicists choose specific cubic cells.
7-1-Lattices Classification I13:17
Explore how lattices are classified by basic shapes and additive centers, from 2D five lattice types to 3D fourteen lattices, using primitive, body-centered, face-centered, and base-centered arrangements.
7-2-Lattices Classification II -example13:13
Explore crystal systems and the classification of lattices, detailing primitive, body-centered, face-centered, and end-centered lattices among the 14 lattice types, and how to identify units to generate a full crystal.
7-3-Quiz-Edge-Centred4:20
Explore three-dimensional crystal lattices, including body-centered, face-centered, and base-centered unit cells, and examine why edge-centered arrangements cannot form valid lattices under lattice conditions.
8-1-Messing Lattices5:36
Explore the 14 crystal lattices in crystallography by examining primitive, body-centered, face-centered, and base-centered options within seven crystal systems, and why some lattices do not exist despite a 7-by-4 count.
8-2-UC-choice-example14:23
Examine how unit cells define crystal geometry, comparing cubic and primitive forms, calculating volumes, and introducing lattice symmetry as the criterion for selecting a representative cell.

9-1-Symmetry-Intro8:25
Explore the concept of symmetry, including mirror and rotation, and learn how symmetry operations define lattice classification in crystallography.
9-3-Point-Symmetry-overview7:26
Explore point symmetry through reflection across a 2d mirror line and a 3d plane, where fixed points stay put, and rotation about an axis for square and cube shapes.
10-Reflection3:38
Learn the mathematical method of reflection across a plane, using distance vectors, inverting position vectors, and applying it to 3d planes and line mirrors.
11-1-Rotation I11:10
Define n-fold rotation as coinciding with itself after 360 divided by n degrees, illustrated with square fourfold and triangle threefold symmetry, and explore axis-based rotations on lattices.
11-2-Rotation II6:42
Apply 360/n to identify twofold, threefold, fourfold, and sixfold axes in lattices, visualize rotation symbols, and note that fivefold and higher than sixfold symmetries are not permitted.
12-Notes-On-Symmetry7:59
Check translation symmetry to confirm a lattice, then use the translational and point groups within the space group to identify lattice type, square or rectangle, by mirrors and rotations.
13-1-Square-Lattice-In-Detail11:46
Explore the square lattice, its translation group formed by all translation vectors. Identify its point group through six mirrors, a fourfold rotation axis, and multiple twofold axes.
13-2-Quiz0:33
Classify the given lattice and determine its suitable unit cell by examining lattice symmetries and symbols, with optional internet-guided references.
14-1-Symmetry-approach-to-3D-Lattices13:43
Define a lattice as a point set with translation space group and symmetry operations; relate crystal systems to seven point groups and fourteen space groups, distinguishing primitive and body-centered lattices.
14-2-Defining-Symmetries-Of-Lattices2:37
Identify lattice symmetries and crystal systems by analyzing point groups and translation variations, with a focus on the cubic system defined by threefold and fourfold axes and x-ray diffraction verification.
15-Cubic-Lattice-Symmetries8:18
Explore the cubic system's symmetry by detailing fourfold axes with 90-degree rotations, threefold axes along cube diagonals, six twofold axes, and the nine mirror planes.
16-1-Messing-Lattices-Solved8:11
Apply symmetry to show cubic c cannot exist in the cubic crystal system, as a 120-degree rotation about four threefold axes misaligns atoms. Identify a primitive lattice with fourfold axis.
9-2-Lattice-Defining-Symmetry8:26
Learn how translation symmetry defines lattice type, distinguishing square and rectangular arrangements, and ensure every lattice point maps to another under translation.
16-2-Existance-Of-Cubic F3:53
Understand why the face-centered cubic lattice exists within the cubic crystal system, has threefold axes, and is one of the 14 Bravais lattices.
16-3-Tetragonal C6:20
This lecture contrasts cubic and tetragonal lattices, noting cubic edges and faces are equivalent while tetragonal bases are square with third axis, identifies fourfold axis, primitive tetragonal p unit cell.
16-4-Tetragonal A8:33
Analyze crystal symmetries, noting three two-fold axes and a=b≠c with 90-degree angles, distinguishing monoclinic, rhombohedral, and cubic cases, and conclude the structure belongs to the orthorhombic crystal system.

Requirements

Basic Geometry of Simple Shapes , ex: square, parallelogram, cube, parallelepiped.
Basics of Vectors (Not crucial)

Description

Materials Science and Engineering ,

An important field of science that has always had a strong effect on the evolution of civilizations and how advanced they were .

Being a measure of humanity's capability, knowledge of materials was used to mark ages , we say "stone age"... . As time passes, our knowledge became more comprehensive and accurate about the different types of materials and their properties ,

So advanced that we can now produce new materials, which is what we call materials engineering. And That's why I present this course to you .

One of the fields that I study passionately is materials science, because it is a crucial prerequisite for designing any structure or machine . This course "Crystallography" is an introductory course for materials science, starting from the very basics ,designed for high school students or college students in early years , who are interested to know how do solid materials look like at the deepest levels of the atomic scale . how are atoms oriented together, and how could we describe this orientation.

In this course we'll not follow the traditional way of teaching . It is meant to be a comprehensive course covering a large group of topics regarding crystalline solids , especially steels ceramics and polymers . As they are the most commonly used materials in manufacturing. We will study these topics in full detail ,and move slowly but surely towards building a strong foundation for future studies in engineering fields .

This is the first batch of the course covering the following topics :

- Crystal structure and its different levels

- 2d & 3d Lattices -unit cells - symmetry in 2d &3d ,

- Square lattice as an example of 2d lattices

- Cubic lattice as an example of 3d lattices .

Special illustration methods are used to make sure the information is properly delivered .

This course consists of : 4:47 hours , 31 videos, average 8.7 minutes per video .

And remember that you have a 30 day money back guarantee, if you are not totally satisfied with the course. Looking forward to your suggestions and Support and,

See you in the course.

Who this course is for:

High School Students .
College Students in their early years.
Interested people about understanding Materials.

Materials Science and Engineering : Crystallography

What you'll learn

Explore related topics

Course content

Crystal and Lattices15 lectures • 2hr 50min

Symmetry16 lectures • 1hr 58min

Requirements

Description

Who this course is for: