1. Anandh Subramaniam & Kantesh Balani
MATERIALS SCIENCE
&
ENGINEERING
Anandh Subramaniam & Kantesh Balani
Materials Science and Engineering (MSE)
Indian Institute of Technology, Kanpur
URL: home.iitk.ac.in/~anandh
AN INTRODUCTORY E-BOOK
Part of
A Learner’s Guide

2. A note on kind of models used for representation of Crystal Structures
Wire Frame model
Ball & Stick Model
Atoms are reduced to points and the focus is on the cell edges
Both atoms & cell edges are in view (but atoms do not touch each other)
Cubic void
Void Models
Space Filling Model
Where the void (actually the polyhedron formed by the vertices of the void) is in full view and everything else is hidden away
Atoms touch each other. Unit cell edges may not be visible
Note: though these are called space filling models in reality they do not fill space [as obvious from the space between the atoms (-the voids)]
Video: models for crystal structures