You can manipulate individual atoms with lasers, and 'cool' them down to nearly absolute zero. So I wonder how far we are from being able to grow a single crystal part via laser sintering?
A very very long time. Laser sintering does not typically work on the per-atom level (those are called laser tweezers iirc), it works on relatively bulky material (powder or grains).
The result is definitely not crystalline, in fact it is better compared with regular sintered materials.
The result is definitely not crystalline, in fact it is better compared with regular sintered materials.