What Is a Unit Cell? Crystallography From Scratch
A unit cell is the smallest repeating box that builds a whole crystal. How to count its atoms, work out its packing, and connect it to density you can measure.
Category: Fundamentals
BCC vs FCC vs HCP: Why Crystal Structure Decides Ductility
BCC steel has 48 slip systems and shatters in the cold. FCC copper has 12 and never does. Here is the packing-and-slip physics that decides which.