What is a unit cell? And what are cell parameters or Miller indices? In this video, we make sense of the confusing jumble of information about unit cells and learn why they’re so useful for understanding crystals and surfaces.

Chapters:
0:00 Introduction
01:12 Unit Tiles for 2D Patterns
04:31 Unit Cells for 3D Patterns
10:30 Interpenetrating Unit Cells
11:53 Bravais Lattices
15:02 Planes and Miller Indices
21:24 Crystal Surfaces
23:44 Macroscale Crystals
25:42 Further reading/watching

Frank Hoffman’s lecture series on unit cells:    • Unit 1.1 - Crystal and Structures - P...  

Wilson Bentley’s snowflake photographs courtesy of the Natural History Museum, London: https://tinyurl.com/yxkeabwb

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Three Twentysix Project Leader: Dr Andrew Robertson
Assistant Editor: Purple Saptari
3D Animations: Es Hiranpakorn
Graphic Design contributor: Maria Sucianto

This video was produced at Kyushu University and supported by JSPS KAKENHI Grant Number JP21K02904. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author and do not necessarily reflect the views of Kyushu University, JSPS or MEXT.