Hexagonal close packing is one of two crystal structures that derive from stacking close-packed-planes of hard sphere atoms. In the HCP structure only two stacking ...

Through high pressure processing techniques performed in a symmetric diamond anvil cell, a group of researchers from the Department of Geological Sciences at Stanford University have successfully ...

The hexagonal close-packing arrangement yields an average density of π/(3√2) ≈ 74 percent. Efficient packing is the name of the game. This problem attracted the attention of mathematical ...