Yes, you're right, if we look only at the image that appears in the article posted by ped, because it is only part of the system.
You have to remember that so far is only prototype stage.
That is an image of the device outside the vacuum facility.
The work is performed for the moment in a...
For medical use (and maybe others possible areas also), well, more or less, I think what it can be, medical, is one area I know a little bit :D
This device uses a piezoelectric material, right? The piece you see in the center, on top.
I'd really like to think it's fake, but I can not say it for sure.
Supposedly happened in the city of Aleppo, in Syria, during a wedding, where it is traditional shooting in the air in this type of event.