Long before mankind began to create structures, buildings and machines, the sandwich concept and the honeycomb structure was developed by nature.
Many other examples can be found in the skeleton of organisms, in leafs of plants as well as in the wings of birds.
Section of an iris leaf
Section of a bird wing
Section of a human skull
The honeybee comb is an optimal material efficient construction because it is build via two physical minimisation phenomenas:
1. hexagonal closest packed cylinders and
2. minimal surface energy.
The hexagonal comb of the honeybee has been admired and wondered about from ancient times on.