Can I suggest an element, it is like BOMB but it only explodes when it receives a signal by WIFI. I would call it SBMB (Smart Bomb). With that I could suggest that BOMB be renamed DBMB (Dumb Bomb)
How about tractor beam (TRBM)? When sparked with NSCN, it could pull poweders, gasses and liduids towards it. When sparked with PSCN, it would push away the elements. If sparked with breakable metal or meatl, it would turn it off completley.
You could do something like that with White hole and black hole combined. Just put an air-but-no-particles wall in between the black hole and the particles you are targeting