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Weaire–Phelan building blocks

by mechadense

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A15 Cr3Si crystal structure foam honeycomb Nb3Sn space-fill spacefill space filler space filling structure unit cell Voroni WeairePhelan A15 Cr3Si crystal structure foam honeycomb Nb3Sn space-fill spacefill space filler space filling structure unit cell Voroni WeairePhelan A15 Cr3Si crystal structure foam honeycomb Nb3Sn space-fill spacefill space filler space filling structure unit cell Voroni WeairePhelan

It's the Weaire–Phelan structure.
(minimum surface foam / honeycomb)
See: https://en.wikipedia.org/wiki/Weaire%E2%80%93Phelan_structure

The Weaire–Phelan structure is based on the unit cell of the A15 structure.
See: https://en.wikipedia.org/wiki/A15_phases
A structure type: https://de.wikipedia.org/wiki/Strukturtyp
(prototypical componds of the A15 structure are: Cr3Si, Nb3Sn)

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Note:
When assembled correctly the pyritohedrons never touch each other.
In fact one can get away

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