[viraptor]

I found the post-impact part of the video interesting. The article says "turn an armor-piercing bullet into dust on impact". But in the video, it looks like it turns it into a lot of metal particles / shrapnel. As a body armor it looks like it could be increase the danger to those around a person getting hit.

[fiatmoney]

In practice, you'd probably wrap the plate in fabric that would tend to catch the fragments, if nothing else because you need a plate carrier.

[jdfellow]

The effect is called "spalling" and current steel and ceramic armor plates are coated in a layer of rubber material to catch the fragments.

[PhasmaFelis]

It's hard to say for sure since there's only five frames of video post-impact, but it looks like those fragments are slowing down really fast. In the first couple of frames they're moving faster than the bullet was, but in the last couple they barely move at all. It seems possible that they're only dangerous within a foot or two of the impact point, which seems like a very acceptable trade-off for the benefits.

Even if I'm wrong, unless it catches somebody in the eye, I don't think those little fragments could do worse than a flesh wound.

[personjerry]

Yes, I understood that as "turns bullet into shrapnel" which sounds rather problematic.

[madeofpalk]

Sales opportunity.