Time crystals and nuclear analogues?

[Jess Tauber]

I remember reading briefly about so-called 'time crystals', which have a periodic arrangement in FOUR dimensions. In nuclear physics there are mostly ultra-stable nuclei which are spherical (all three dimensional extents equal), deformed nuclei can be ellipsoidal (where two spatial dimensions are the same (either prolate (the majority) or oblate (the minority, for some reason). But there are also nuclei where none of the spatial dimensions of the matter wave are the same.

I'm wondering if there are any nuclei that take TIME as a fourth 'dimensional' variable into account, such that regularities here might find some utility in future technology.  Any thoughts, folks? Thanks.

Jess